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Journal articles on the topic 'Diesel parameters'
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1
Kovač Kralj, Anita, and Davorin Kralj. "Parameters Influences during Biodiesel Production." Applied Mechanics and Materials 44-47 (December 2010): 4167–75. http://dx.doi.org/10.4028/www.scientific.net/amm.44-47.4167.
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Bio-diesel is a clean burning alternative fuel, produced from domestic, renewable resources. Bio-diesel can be blended at any level with petroleum diesel to create a bio-diesel blend. It can be used in compression-ignition (diesel) engines with little or no modification. Bio-diesel is simple to use, biodegradable, non-toxic, and essentially free of sulphur and aromatics. This paper presents the two following identifiable topic areas as key themes: 1. preparation of an aqueous solution of sodium hydroxide – as a catalyst, which can be activated by the most MeO- active groups, and can therefore be converted to methyl esters (biodiesel) from triglyceride. Methoxide (MeO-) was produced from sodium hydroxide (NaOH) and methanol (MeOH) in a batch reactor: NaOH + MeOH = H2O + Na+ + MeO-. During bio-diesel production, methoxide is incorrectly referred to as the product of mixing methanol and sodium hydroxide. An aqueous solution of sodium hydroxide – was prepared as a catalyst, by using different amounts of water at the same temperature. The reaction with lower water took place at the highest and quickest degrees of NaOH conversion and thus more MeO- active groups. The water was effective as an inhibitor.
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Marchenko, A. P., I. V. Parsadanov, and A. V. Savchenko. "DETERMINATION OF COMPLEX FUEL-ECOLOGICAL CRITERION FOR DIESEL WORKING ON WATER-FUEL EMULSION." Internal Combustion Engines, no. 2 (July 26, 2021): 31–37. http://dx.doi.org/10.20998/0419-8719.2021.2.04.
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Today, internal combustion engines are very common as energy sources in many countries around the world. This makes the tasks related to improving the environmental performance of internal combustion engines relevant. The introduction of alternative fuels in internal combustion engines is an effective way to reduce their negative impact on the environment. One of the most available and widespread alternative fuels for diesels is a water-fuel emulsion. The use of water-fuel emulsion makes it possible to reduce the specific fuel consumption of petroleum origin, as well as to achieve a significant reduction in emissions of harmful substances from diesel exhaust. However, due to differences in the physical properties of traditional diesel fuel and water-fuel emulsion, the course of the processes of mixture formation and combustion in the diesel cylinder changes significantly. This may be due to the emergence of a reserve for further improvement of the diesel engine by selecting the parameters of the diesel engine running on water-fuel emulsion. The study selected the following parameters for variation: compression ratio, boost pressure, duration of the injection process, injection timing. The article considers the influence of these parameters on the Brake-specific fuel consumption of diesel, the specific emission of particulate matter and nitrogen oxides, the maximum pressure in the cylinder. The nature and degree of influence of changes in the parameters of the diesel engine on its performance was determined using mathematical modeling. It should be noted that the influence of each of the parameters selected for variation is quite complex and often ambiguous. That is, when some indicators improve, others may deteriorate somewhat. Therefore, in order to select the most rational parameters of a diesel engine running on a water-fuel emulsion, it is necessary to simultaneously assess the economic and environmental performance of the diesel engine. For this assessment, a method was used to determine a comprehensive fuel and environmental criterion for a diesel engine running on a water-fuel emulsion. Thus, the article shows the potential for comprehensive improvement of environmental and economic performance of the diesel engine by choosing rational parameters.
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Konyukov, Vyacheslav Leontievich. "Comparative analysis of marine diesel engines by ultimate efficiency increase under direct air flow control." Vestnik of Astrakhan State Technical University. Series: Marine engineering and technologies 2021, no. 2 (2021): 43–54. http://dx.doi.org/10.24143/2073-1574-2021-2-43-54.
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The paper presents a comparative analysis of the operational parameters and parameters of marine diesel engines obtained as a result of computational and theoretical studies with direct control of air flow using an adjustable turbocharger nozzle to ensure the maximum allowable efficiency of diesel engines. The objects under study are: two-stroke marine diesel engine, operating on the screw characteristics; marine four-stroke diesel working on the screw characteristics; marine four-stroke diesel working on the load characteristics. As a result of the rotation of the blades of the adjustable nozzle in the direction of reducing the angle of their installation the diesel engine efficiency increases. However, the maximum pressure of the cycle also increases, the pressure drop decreases during purging the cylinders, the effective angle of gas exit from the turbine nozzle decreases, and the compressor's surge stability margin changes. There has been studied the design potential of diesel engines for the maximum increase in their efficiency, which made it possible to accept the stable operation of the compressor in all the studied modes. In the course of the research, boundary values were found for the maximum pressure of the diesel cycle, the pressure drop for purging the cylinders and the effective angle of flow exit from the nozzle apparatus, beyond which the specified parameters did not go beyond all the studied modes of operation of diesels. Taking into account the limitations of the greatest potential for improving efficiency in the equity modes of loads has a four-stroke diesel engine, operating on the screw characteristics, the smallest capacity is the same petrol, but working on the load characteristics.
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Mamilla, Venkata Ramesh, S. Bhagavan Sreedhar, and Padilam Rama Krishna. "An Artificial Intelligent Prediction Model For Evaluating The Engine Performance And Emission Characteristics Using Waste Cooking Oil Biodiesel Blends." Journal of Mines, Metals and Fuels 70, no. 3A (2022): 21. http://dx.doi.org/10.18311/jmmf/2022/30663.
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<p>Bio-fuels or bio-diesels are biodegradable fuels and are not toxic in nature. In this study, bio-fuels are produced by transesterification process from waste oils of cooking, animal fat and vegetable oils. During the process, these oils are reacted with an alcohol generally ethanol or methanol in the presence of sodium hydroxide as catalyst resulting in ester called as bio-diesel with a byproduct of glycerin. The manufactured pure bio-diesel is generally less flammable when compared to diesel and having burning point of 50 degrees celsius. Bio-diesel blends are formed by combination of bio-diesel and petroleum diesel in different proportions and the flash and gel points lie between those of pure fuels depending on the mixture. Artificial neural networks (ANNs) are soft computational models that mimic the behaviour of human neurons. ANNs are formed by the interconnections between the building blocks called neurons which are simple processing units that process the data and the performance of network depends on parameters involved and the architecture used. These are used for obtaining the correlation between the dependent and independent process parameters that are nonlinear in nature. ANNs find application in classification and prediction problems, provides results that are fast and are very close approximation to actual output. This study indicates bio-diesel is produced from waste cooking oil methyl ester and various blends are made with different proportions of bio-diesel and petroleum diesel. The experiments are conducted on diesel engine with bio-diesel blends and the performance parameters are brake power (BP), specific fuel consumption (SFC), brake thermal efficiency and the engine exhaust emissions. The ANNs are trained with the partial blend data used for experimentation as input to the model and the performance parameters as output using different activation functions. The model is tested with the remaining data to assess the percentage error between the actual and predicted values. The results reveal that blends of bio-diesel provide good performance and emission characteristics. It is concluded from the study that the ANN model can predict the exhaust emissions and engine performance well.</p>
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Ramlan, Nur Atiqah, Mohd Herzwan Hamzah, Nur Fauziah Jaharudin, Abdul Adam Abdullah, and Rizalman Mamat. "Analysis of Diesel Engine Performance Fueled with Waste Cooking Oil." Applied Mechanics and Materials 465-466 (December 2013): 418–22. http://dx.doi.org/10.4028/www.scientific.net/amm.465-466.418.
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Waste cooking oil (WCO) is one of the economical and easiest sources for biodiesel production. The use of WCO in diesel engine is sustainable if they can perform similarly to diesel fuel. Therefore, this paper presents the performance and combustion characteristics of a single cylinder diesel engine fueled with biodiesel from WCO and compared with diesel fuel. In this study, the WCO was blended with diesel fuel at 5% and 10% blending ratio and named as B5 and B10 respectively. The experiment has been conducted at variable engine speed, constant load and at compression ratios of 17.7. The performance parameters that have been analyzed in this experiment were engine power, torque and in-cylinder pressure. In the end, results show that the engine performance of B5 and B10 was slightly similar to diesel fuel and can be used as a diesels substitute.
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M., I. KAPITSA, I. MARTYSHEVSKYI M., N. KYSLYI D., and I. PALII I. "TECHNICAL AND ENERGY PARAMETERS IMPROVEMENT OF DIESEL LOCOMOTIVES THROUGH THE INTRODUCTION OF AUTOMATED CONTROL SYSTEMS OF A DIESEL." Science and Transport Progress, no. 3(57) (June 15, 2015): 176–85. https://doi.org/10.15802/stp2015/46077.
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<strong>Purpose</strong>. Today the issue, connected with diesel traction remains relevant for the majority of industrial enterprises and Ukrainian railways and diesel engine continues to be the subject of extensive research and improvements. Despite the intensive process of electrification, which accompanies Railway Transport of Ukraine the last few years, diesel traction continues to play an important role both in the main and in the industrial railway traction rolling stock. Anyway, all kinds of maneuvering and chores are for locomotives, they are improved and upgraded relentlessly and hourly. This paper is focused on finding the opportunities to improve technical and energy parameters of diesels due to the development of modern control method of the fuel equipment in the diesel engine. <strong>Methodology.</strong> The proposed method increases the power of locomotives diesel engines in the range of crankshaft rotation (from idle running to maximum one). It was based on approach of mixture ignition timing up to the top «dead» center of piston position. <strong>Findings.</strong> The paper provides a brief historical background of research in the area of operating cycle in the internal combustion engine (ICE). The factors affecting the process of mixing and its quality were analyzed. The requirements for fuel feed system in to the cylinder and the «weak points» of the process were presented. A variant of the modification the fuel pump drive, which allows approaching to the regulation of fuel feed system from the other hand and to improve it was proposed. Represents a variant of embodiment of the complex system with specification of mechanical features and control circuits. The algorithm of the system operation was presented and its impact on the performance of diesel was made. <strong>Originality. </strong>The angle regulating system of fuel supply allows automating the process of fuel injection advance angle into the cylinder. <strong>Practical value.</strong> At implementation the angle regulating system of fuel supply components of the diesel engine remain unchanged It allows installing the system on diesel engines of the existing fleet of locomotives and railroad industries. The system, considered in the modeling process, has demonstrated its desirability and feasibility of practical application for diesel engines.
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Xu, Yin Sheng, Hua Zhu, and Ke Jiu Lu. "Research on Parameters Optimization of Biodiesel Engine Combustion System." Applied Mechanics and Materials 385-386 (August 2013): 77–80. http://dx.doi.org/10.4028/www.scientific.net/amm.385-386.77.
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This paper researches on the optimization of the effective thermal efficiency of diesel engines for the target optimization on the test bench to investigate the economical efficiency impact of combustion system parameters of diesel engine fueled with biodiesel to determine the optimum value of these parameters in order to improve the burning biodiesel combustion efficiency of the diesel engine. Results show that the system parameters through the optimization of combustion can meet the standard of the diesel calibration power levels up to the original machine, combustion efficiency can be achieved for more than 32%.
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Rahul, Kumar Singh, and Kumar Soni Dinesh. "Emission Characteristics of Single Cylinder CI Engine for Varying Nozzle Depth at Different Spray Angles." International Journal of Engineering and Advanced Technology (IJEAT) 9, no. 3 (2020): 126–33. https://doi.org/10.35940/ijeat.C4841.029320.
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The present research is about the reduction of harmful gases from the exhaust of a diesel fuel operated diesel engine. A kirloskar single cylinder diesel engine (model –TV-1) is selected for the numerical simulation using commercially available software AVL FIRE. The operating and boundary condition of single cylinder diesel engine is referenced in the published articles. The hemispherical bowl piston geometry is generated and meshed in the software the research is further processed with the selection of three different spray angles like 120o , 140o , and 160o . Whereas 120 spray angle is the standard spray angle. Additionally to analyzed the effect of nozzle depth on the emission, combustion and performance parameters four nozzle depth values are also included in the research. The four nozzle depths are 0.5mm, 1mm, 1.5mm and 2mm. whereas 1mm nozzle depth is standard nozzle depth. All four nozzle depths are examined under 120o , 140o , and 160o spray angle. The need of petroleum fuels is increasing everyday despite of their speculation regarding the depletion of petroleum fuels. The petroleum fuels are categorized as suspicious element for human being due to its well known major harmful effects on the environment. The concern is that the need of petroleum fuel is increasing simultaneously with its price in the market. The researchers around the world are focusing either on the reduction of harmful effects which produced from the petroleum fuel or finding another a batter substitute of the petroleum fuel.
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Lebedevas, Sergejus, Andrius Vaicekauskas, Galina Lebedeva, Prutenis Janulis, and Violeta Makarevičienė. "RESEARCH INTO OPERATIONAL PARAMETERS OF DIESEL ENGINES RUNNING ON RME BIODIESEL." TRANSPORT 21, no. 4 (2006): 260–68. http://dx.doi.org/10.3846/16484142.2006.9638076.
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The results of motor experimental researches on operational parameters of diesel engines F2L511 and A41 are presented in the publication. Change of harmful emission of exhaust gases was determined and evaluated, fuel economy and thrust characteristics of diesel engines running on RME biodiesel compared to diesel fuel. The influence of technical condition of fuel injection aggregates was evaluated for parameters of harmful emission of diesel engines running on biodiesel by simulation of setback of fuel injection in alowable range of technical conditions ‐ the coking of nozzles of fuel injector. The complex improvement of all ecological parameters was evaluated by optimisation of fuel injection phase of diesel engines running on RME biodiesel. Objectives and aspects of further researches on indicator process of diesel engines were determined.
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Rozhdestvensky, Yu, K. Gavrilov, and A. Doikin. "Forced Diesel Piston Tribological Parameters Improvement." Procedia Engineering 206 (2017): 647–50. http://dx.doi.org/10.1016/j.proeng.2017.10.531.
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Savelyev, G. S., and D. V. Degtyarеv. "Comparative technical and economical parameters of gas diesel and gas-spark-ignited converted diesels to run on CNG." Traktory i sel hozmashiny 79, no. 4 (2012): 27–28. http://dx.doi.org/10.17816/0321-4443-69370.
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On the basis of experimental input data the commercial efficiency of conversion of automotive diesels in gas-diesel and gas-spark-ignition engines is calculated. Analysis of both options' performance is given, taking into account the load factor of engine.
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Berestovoi, Ivan, and Galina Berestovaya. "Evaluation of economic and technical efficiency of diesel engines operation on the basis of volume combustion rate." Reporter of the Priazovskyi State Technical University 32 (December 7, 2016): 86–91. https://doi.org/10.5281/zenodo.14619692.
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The article deals with a new approach to evaluation of complex efficiency of diesel engines. Traditionally, cylinder’s capacity, rotation frequency, average efficient pressure inside cylinder, piston’s stroke, average piston’s velocity, fuel specific consumption and other indices are used as generalizing criteria, characterizing diesel engine’s efficiency, but they do not reflect interrelation between engine’s complex efficiency and a set of economic, mass-dimensional, operational and ecological efficiency. The approach applied in the article makes it possible to reveal the existing and modify the existing methods of solving the problem of improving diesel engine’s efficiency with due regard to interrelation of the parameters, characterizing efficiency of their operation. Statistic analyses were carried out, on the basis of which an assumption regarding the existence of interrelation between specific fuel consumption and the analyzed engine’s parameters was made. Processing of statistical data for various analyzed functions of diesel engines helped offer a function, illustrating the link between volume combustion rate, piston’s area and nominal theoretical specific fuel consumption. Interrelation between volume combustion rate, nominal parameters of diesel operation and efficiency indices, obtained by processing statistical data of more than 500 models of diesels of different series was evaluated, the main feature of it being a mathematical trend. The analysis of the obtained function makes it possible to establish an interrelation between economic efficiency of a diesel, its main index being specific fuel consumption and volume combustion rate and design peculiarities
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Luo, Zi Lai, Han Bao Chang, and Li Min Shao. "Research on Effect of Nozzle Structure Parameters on Performance of Common Rail Diesel Engine." Advanced Materials Research 354-355 (October 2011): 522–26. http://dx.doi.org/10.4028/www.scientific.net/amr.354-355.522.
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Structure parameters of diesel engine spray system have decisive effects on its performance. The paper studies the effects of 8 sets of nozzles with different structure parameters on performance of diesel engine with the purpose to realize high-efficiency, low-emission and low-noise combustion process in diesel engine, based on requirements and characteristics of performance optimization of DI diesel engine, thus realizing optimum design of nozzle structure parameters for high pressure common rail diesel engine.
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Maslov, Igor. "Formation of a set of parameters for assessing the technical condition of autonomous power plants." Bulletin of Kharkov National Automobile and Highway University, no. 107 (December 26, 2024): 88. https://doi.org/10.30977/bul.2219-5548.2024.107.0.88.
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Abstract. Problem. The object of study is the problem of creating a relatively simple diagnostic model of a diesel engine for an autonomous power plant in terms of the number of required input parameters. Goal.The aim of the study is to develop a diesel engine diagnostic system for an autonomous power plant. Methodology. To achieve this goal, the following tasks were solved: - to develop a method for synthesising a diagnostic graph model of a diesel engine for an autonomous power plant; - to propose a method for selecting the initial parameters of the diagnostic graph model of a diesel engine.The subject of the study is the relationship between the selected set of input parameters of the diagnostic model of a diesel engine and the adequacy of the response of the resulting model to real emergency situations. Results. As a result of the study, a methodology for synthesising a diagnostic graph model of a diesel engine of an autonomous power plant has been developed. The resulting model allows monitoring the performance of a diesel engine and adjusting the relevant parameters to achieve the required operating state or localise an emergency. Originality. The proposed method of synthesis of a diagnostic graph model of a diesel engine of an autonomous power plant, based on the use of the graph theory method, allows obtaining results that correspond to the actual state of operation of a diesel engine of a power plant with relative simplicity of use. This is achieved by using specially selected groups of diesel power control parameters as diagnostic parameters of the graph model. These indicators are available for measurement without significant dismantling and installation work, the use of complex measuring instruments, but can be measured during routine maintenance and operation. A methodology for selecting the output parameters of a diagnostic graph model of a diesel engine is proposed, which includes the process of forming the minimum required sample of parameters of diesel engine operation. Practical value. The following parameters have been selected as parameters for assessing the technical condition of power plant diesel engines and functionally related systems and circuits: power plant capacity; diesel crankshaft rotation frequency; fuel consumption; and a group of thermal parameters. This minimum required set of system state parameters makes it possible to link the diagnostic scheme for the studied technical condition of power plant diesel engines with their operational performance
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S R, Rajkumar, Sujin M, Jeshvin G. Sekhar, Pearlson Prasanna Raja, and J. Shajan. "Performance and Emission Characteristics Study of Bio Diesel (Mahua Seed) – Diesel Blends in CI Engines." INTERANTIONAL JOURNAL OF SCIENTIFIC RESEARCH IN ENGINEERING AND MANAGEMENT 09, no. 01 (2025): 1–9. https://doi.org/10.55041/ijsrem40416.
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Nowadays, the interest of researchers from all over the world is growing largely in eco- new line friendly bio-fuel (bio-diesel), especially in the countries like India which are still in their new line development phase. Bio-diesel can be prepared from edible or non-edible vegetable oils by newline heir trans-esterification using low molecular alcohols. These bio-diesels can be blended with newline mineral diesel in different proportion to get an efficient bio-fuel blend. In the recent years, a newline significant amount of research has been done on the single bio-diesel and mineral diesel newline blend as a bio-fuel. On the other hand, a limited amount of work is reported in the field of newline bio-fuel prepared by mixing of two bio-diesels with mineral diesel. Therefore, there is good newline scope to further study and research in this area. This present research work was carried out in newlinetwo phases. In the first phase two suitable bio-diesels were selected after literature survey to newline prepare dual bio-fuel as an alternate fuel to conventional mineral diesel. Further, two step newline trans-esterification method was employed and reaction parameters were varied to produce newline improved quality dual bio-fuel sample blends. The physicochemical properties were analyzed newline for the various sample blends and the samples with better quality were recommended for newline testing on a varying compression ratio engine for combustion and emission characterization. Newline The second phase of research work included the performance of engine and emission newline characterization of the dual bio-fuel samples prepared. Mahua (Madhuca indica) newline seed oil has production capacity of approximately 60 MT in India, which has oil content near newline to 35-40% and heat content value almost near to that of conventional diesel. Keywords: Madhuca indica, Blended oil, Engine Performance
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Markov, Vladimir, Victor Furman, Sergey Plakhov, and Bowen Sa. "Optimization of parameters for diesel shaft speed control system." E3S Web of Conferences 140 (2019): 10003. http://dx.doi.org/10.1051/e3sconf/201914010003.
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This work presents a fuel supply electronic control system (model ESUVT.01) developed by Dizelavtomatika (Saratov) for the D50 (6 CHN 31.8/33) locomotive diesel engine manufactured by Penzadieselmash. In this system, the fuel supply process is controlled by a high-speed electro-hydraulic valve installed in the high-pressure line of the fuel system. A set of electrically controlled high pressure fuel pumps (mode 4ETN.03) with electro-hydraulic valves for the diesel was manufactured. This system can also control the engine speed. It was noted that the best quality indicators of the speed regulating process are provided by the PID control law. It was shown that for a diesel with high inertia, it is advisable to use the PI control law. Experimental studies were conducted to assess the influence of structure and parameters of this control system on the dynamic qualities of this diesel engine. The object of bench testing was a 1-PDG4D-type diesel-generator from the above-mentioned diesel engine and MPT-84/39 traction generator. The dependences of the duration of the transient process, the overspeed and the period of natural oscillations of the regulated parameter on the PI controller parameters were obtained. The necessity of optimizing the coefficients of proportional (P) and integral (I) components of the PI control law was confirmed. A method for optimizing the coefficients of proportional and integral components of the PI control law was proposed. The optimized coefficients for the transient acceleration process of the diesel engine according to the locomotive characteristic were obtained.
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Ganesan, S., S. Mahalingam, Krishna Eluri Vamsi, and A. Balaji. "Taguchi Based Optimization of Engine Parameters Using Nanocatalyst with Blends of Biodiesel." Applied Mechanics and Materials 766-767 (June 2015): 995–1000. http://dx.doi.org/10.4028/www.scientific.net/amm.766-767.995.
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Diesel is a primary source of fuel consumed around the globe. Diesel, being a fossil fuel is expected to get over by 2050. Diesel operated vehicles normally emits high level of poisonous gases like NOx, CO2, HC etc. During the various researches, it was being found that vegetable oils exhibit the properties closer to diesel. Few changes in the properties of vegetable oils have resulted in efficient results and allowed us to replace diesel. The present work investigates the emission of diesel engine at various parameters, when lemongrass oil is blended with diesel in various proportions at different levels of injection pressure. The diesel engine was tested on load condition of 25%, 50%, 75% and 100%. Whereas ,injection pressure is varied from 200 to 220 bar at an interval of 20 bar with 10BD, 20BD and 30BD blends of biodiesel. Very small amount of nanocatalytic substance (MgO) is being used i.e. 15ppm, 30ppm and 45ppm to enhance the combustion properties of bio-fuel. The results Shows reduction in NOX HC and CO without sacrificing fuel efficiency. These confirmation results proves that good agreement of predicted values.
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Dong, Aiqi, Lijuan Liu, Chunce Zhao, and Ying Guan. "Neural Network Prediction of Locomotive Engine Parameters Based on the Dung Beetle Optimization Algorithm and Multi-Objective Optimization of Engine Operating Parameters." Sensors 25, no. 3 (2025): 677. https://doi.org/10.3390/s25030677.
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Altitude has a significant impact on the power and emissions of diesel engines. This paper combines neural network prediction models with artificial intelligence-based multi-objective optimization algorithms to analyze the performance of internal combustion engines for plateau dual-source locomotives operating at different altitudes. The study focuses on the altitude range based on the Laji Line and selects decision variables and output objectives that significantly affect diesel engine performance for joint optimization. First, the diesel engine is simulated and modeled using GT-Power to generate the required dataset. Then, a random sampling method is applied to generate a dataset of 400 operating points from the simulation model. The experimental results show that the neural network prediction model optimized by the DBO algorithm achieves correlation coefficients above 95%. Finally, the NSGA-II algorithm is used for multi-objective optimization. The optimization results indicate that the proposed intelligent optimization method significantly improves the performance of the diesel engine under different altitude conditions, confirming the effectiveness and potential of artificial intelligence optimization algorithms in diesel engine optimization.
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Victorovych Sagin, Sergii, Oleksiy Andriiovych Kuropyatnyk, Yurii Victorovych Zablotskyi, and Oleksandr Victorovich Gaichenia. "Supplying of Marine Diesel Engine Ecological Parameters." Naše more 69, no. 1 (2022): 53–61. http://dx.doi.org/10.17818/nm/2022/1.7.
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The by-pass system of exhaust gas for the engine 6L20 Wartsila has been observed. The requirements of Annex VI MARPOL towards nitrogen oxide concentration in ship engine exhaust gases have been provided. The purpose of research was the determination of diesel 6L20 Wartsila by-pass exhaust gases optimum volume – at this the nitrogen oxide minimal concentration in exhaust gases is assured, the minimal increase (comparing with operation mode without by-pass) – specific effective fuel consumption, supporting of necessary thermal factor diapason of engine cylinders. The research was performed for the exhaust gas by-pass diapason 0…10 % with engine load diapason 0.55…0.85 % from nominal power. Upon experimental results it has been stated that the exhaust gas by-pass usage favors the ecological parameters of ships engine operation modes – by this at the range of exploitation load 0.55…0.85 % from nominal power the nitrogen oxide concentration in exhaust gas is decreased to 1.32….12.97 %. The exhaust gas by-pass impairs the combustion process and favors the increasing of specific effective fuel consumption and increasing the temperature of exhaust gases. The exhaust gas by-pass system effectiveness assessment should be performed by complex estimation of the following engine operation parameters: the nitrogen oxide concentration in exhaust gas, increasing of specific effective fuel consumption(SFOC), the exhaust gas temperature. As optimal degree of exhaust gas by-pass value when the maximum decrease of nitrogen oxide emission at minimal increase of fuel consumption and simultaneous engine thermal factor handling has to be considered.
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Jukl, Michal, Petr Dostál, and Jiří Čupera. "Analysis of Engine Parameters at Using Diesel-LPG and Diesel-CNG Mixture in Compression-ignition Engine." Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis 62, no. 1 (2014): 125–30. http://dx.doi.org/10.11118/actaun201462010125.
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This work is aimed on influence of diesel engine parameters that is used with mixture of gas and diesel fuel. The first part of the article describes diesel fuel systems where small part of diesel fuel is replaced by LPG or CNG fuel. These systems are often called as Diesel-Gas systems. Next part of the article focuses on tested car and measurement equipment. Measurement was performed by common-rail diesel engine in Fiat Doblň. Tests were carried out in laboratories of the Department of Engineering and Automobile Transport at the Mendel University in Brno. They were observed changes between emissions of used fuels – diesel without addition of gas, diesel + LPG and diesel + CNG mixture. It was found that that the addition of gas had positive effect on the performance parameters and emissions.
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Kryshtopa, Sviatoslav, Krzysztof Górski, Rafał Longwic, Ruslans Smigins, and Liudmyla Kryshtopa. "Increasing Parameters of Diesel Engines by Their Transformation for Methanol Conversion Products." Energies 14, no. 6 (2021): 1710. http://dx.doi.org/10.3390/en14061710.
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The work is aimed at solving the problem of converting existing diesel power drives to gas fuels, which are cheaper and more environmentally friendly alternatives to diesel fuel. Method of energy efficiency increasing of alternative fuels has been improved. Thermochemical essence of energy increasing of source fuel based on the provisions of thermodynamics is considered. Alternative methanol fuel has been chosen as initial product for conversion process and its cost, energy value, and temperature conditions have been taken into account. Calculations showed that the thermal effect from combustion of the converted mixture of CO and H2 exceeds the effect from combustion of the same amount of non-convertible methanol. Fuel energy and engine power were increased due to thermochemical regeneration of exhaust gas heat. An experimental setup was created to study the operation of a converted diesel engine on methanol conversion products. Experimental studies of power, economic, and environmental parameters of converted diesel engine for methanol conversion products were performed. Experimental studies have shown that conversion of diesel engines to work using methanol conversion products is technically reasonable. Fuel consumption reduction was accompanied by environmental performance improvement of the diesel engine working together with a thermochemical methanol conversion reactor. Formation of nitrogen oxides in the exhaust gases decreased in the range of 22–35%, and carbon monoxide occurred in the range of 0–24% according to the crankshaft speed and loading on the engine. Conversion of diesel engines for methanol conversion products is very profitable, because the price of methanol is, on average, 10–20% of the cost of diesel fuel.
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Duvuna, G. A., and A. A. Wara. "Determination of Operational Parameters of a Single Cylinder Two Stroke Engine Run on Jatropha Biodiesel." Advanced Materials Research 367 (October 2011): 525–36. http://dx.doi.org/10.4028/www.scientific.net/amr.367.525.
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The utilization of jatropha oil in a small capacity laboratory diesel engine was investigated. The Jatropha biodiesel was obtained from National Research Institute for Chemical Technology, Zaria - Nigeria. The biodiesel was within the EN, BIS and Brazil specification for biodiesel. The tested blends were 20/80%, 30/70%, 40/60% and 50/50%. Each blend was tested on a short term trial of one hour. 20/80% jatropha oil/diesel blend addition gave the maximum brake power and thermal efficiency. The exhaust gas temperatures of the jatropha oil/diesel blends were lower than that of diesel signifying lower heat loss. The percentage heat losses were lower when operated on higher jatropha oil/diesel blends. For economy of fuel, 20/80% gave specific fuel consumption values when compared to other jatropha oil/diesel blends at all engine speeds. Higher volumetric efficiencies were obtained for lower engine speeds of jatropha oil/diesel blends. Air/fuel ratio shows a decreasing trend with increase in jatropha oil content in jatropha oil/diesel blends. There was no reaction of the jatropha oil/diesel blends with engine parts as there was no engine starting problems, wear out of components or breakdown. No long term assessment, emission characteristics or endurance tests including breakdown of jatropha oil biodiesel were carried out. The research found that 20/80% blend of jatropha oil/diesel blend gave the best performance amongst all blends It is recommended that 20/80% jatropha oil/diesel blend should be used to supplement fossil fuel.
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Górska-Włodarczyk, Wioletta, and Zdzisław Bogdanowicz. "Effect of oxidized graphene addition on diesel fuel quality parameters." Journal of Civil Engineering and Transport 5, no. 3 (2023): 21–29. http://dx.doi.org/10.24136/tren.2023.010.
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The effect of oxidized graphene on the quality parameters of diesel fuel for transport was examined in this study. The research covered base diesel fuel and diesel fuel containing an additive package. Both tested fuels contained no biocomponent. The method of preparing a stable mixture of graphene material in each tested diesel fuels was developed for research purposes. Then, for the fuel samples prepared in this way, tests of quality parameters specified in EN 590 [1] were performed, and the test results were related to the criteria indicated in the mentioned standard. For parameters where it was technically possible to perform the determination, the results showed the influence of the graphene material on the content of solid impurities, oxidative stability and lubricity. For fuel samples containing oxidized graphene, the stability of the mixture under storage conditions was also examined.
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Antonov, Anatolii, Taras Skorobagatko, Roman Yakovchuk, and Oleksandr Sviatkevych. "Interaction of Fire-Extinguishing Agents with Flame of Diesel Bio Fuel and Its Mixtures." Zeszyty Naukowe SGSP 73, no. 1 (2020): 7–24. http://dx.doi.org/10.5604/01.3001.0014.0763.
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Analytical and experimental data on fire hazard of diesel bio fuel, its mixtures with oilbased diesel fuel, and parameters of processes of their burning and interaction with fire- -extinguishing agents. Applicability of the types of fire-extinguishing agents having been used for putting-out of diesel bio fuel was revealed and a number of parameters to describe their efficiency when extinguishing diesel bio fuel were determined. It was revealed that in case of diesel bio fuel content in its mixtures with oil-based diesel fuel up to 30% fire-extinguishing efficiency of foam generated from foam solutions nearly does not differ from that when extinguishing diesel fuel containing no additives.
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Popuri, Ashok Kumar. "Design Parameters for Diesel Hydro Desulfurization (DHDS)." Research Journal of Pharmacy and Technology 13, no. 5 (2020): 2413. http://dx.doi.org/10.5958/0974-360x.2020.00433.3.
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Sarvi, A., and R. Zevenhoven. "Large-scale diesel engine emission control parameters☆." Energy 35, no. 2 (2010): 1139–45. http://dx.doi.org/10.1016/j.energy.2009.06.007.
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Cherepitsa, S. V., S. M. Bychkov, A. N. Kovalenko, et al. "Determination of Inspection Parameters of Diesel Fuels." Chemistry and Technology of Fuels and Oils 39, no. 6 (2003): 364–70. http://dx.doi.org/10.1023/b:cafo.0000011913.62536.d3.
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Irene Nindita Pradnya, Shendy Krisdayanti, and Nurul Komariyah. "THE INFLUENCE OF B-35 DIESEL FUEL TESTING PARAMETERS ON THE EFFICIENCY AND PERFORMANCE OF DIESEL ENGINES." CENDEKIA EKSAKTA 9, no. 2 (2024): 107–15. https://doi.org/10.31942/ce.v9i2.12366.
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The use of biodiesel as a mixture of diesel fuel has become one of the solutions to reduce dependence on fossil fuels and reduce greenhouse gas emissions. The B-35 diesel program, consisting of a mixture of 35% biodiesel with 65% diesel, is an initiative of the Indonesian government to realize more sustainable energy. This study aims to analyze various test parameters of B-35 diesel, including density (ASTM D 1298), viscosity (ASTM D 445), and residual carbon content (ASTM D 4350), and analyze their impact on diesel engine efficiency and performance. The test method is carried out by measuring density using a hydrometer, viscosity using a kinematic viscometer, and carbon residue by heating the sample at a temperature of 500°C. The results showed that the B-35 diesel mixture had a higher density (855,72 kg/m3) and viscosity (3,150 mm2/s) compared to pure diesel, which was 840 kg/m3 and 2,8 mm2/s, making the fuel injection process uniform. The residual carbon content of 0.14%, which is lower than pure diesel, which is 0.18%, helps reduce the potential for the formation of combustion residue buildup in the engine, thereby helping to maintain engine performance. Based on these results, the use of B-35 diesel can be a more environmentally friendly alternative and support the improvement of diesel engine performance. Keywords : biodiesel, diesel, efficiency, emissions, oil.
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Девянин, S. Devyanin, Марков, V. Markov, Неверова, and V. Neverova. "Toxicity Parameters of Exhaust Gases of Diesel Engine Running on Mixed Composition Biofuels." Safety in Technosphere 4, no. 5 (2015): 15–28. http://dx.doi.org/10.12737/16959.
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The article displays advantages of using multicomponent mixed biofuels for diesel engines, i.e. mixtures of oil diesel fuel
 and rapeseed oil, rapeseed oil methyl ester, gasoline. The results of experimental research on a D-245.12C type automotive
 diesel engine running on these fuels are presented. A method of determining the optimal composition of multicomponent
 biofuels is proposed. Using this method optimization calculations of the fuel compositions are made. It is demonstrated that
 among tested biofuels the mixture of 80% oil diesel fuel, 10% of rapeseed oil and 10% of gasoline possesses the superior
 ecological parameters.
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Vellaiyan, Suresh, and Koduvayur Amirthagadeswaran. "Multi-response optimization of diesel engine operating parameters running with water-in-diesel emulsion fuel." Thermal Science 21, no. 1 Part B (2017): 427–39. http://dx.doi.org/10.2298/tsci160404220v.
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Water-in-diesel emulsion fuel is a promising alternative diesel fuel, which has the potential to promote better performance and emission characteristics in an existing Diesel engine without engine modification and added cost. The key factor that has to be focused with the introduction of such fuel in existing Diesel engine is desired engine-operating conditions. The present study attempts to address the previous issue with two-phases of experiments. In the first phase, stable water-in-diesel emulsion fuels (5, 10, 15, and 20 water-in-diesel) are prepared and their stability period and physico-chemical properties are measured. In the second phase, experiments are conducted in a single cylinder, 4-stroke Diesel engine with pre-pared water-in-diesel emulsion fuel blends based on L16 orthogonal array suggested in Taguchi?s quality control concept to record the output responses (perormance and emission levels). Based on signal-to-noise ratio and grey relational analysis, optimal level of operating factors are determined to obtain better response and verified through confirmation experiments. A statistical analysis of variance is applied to measure the significance of individual operating parameters on overall engine performance. Results indicate that the emulsion fuel prepared by Sorbitan monolaurate surfactant at high stirrer speed endows with better emulsion stability and acceptable variation in physicochemical properties. Results of this study also reveal that the optimal parametric setting effectively improves the combustion, performance, and emission characteristics of Diesel engine.
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Lee, T., and R. D. Reitz. "Response Surface Method Optimization of a High-Speed Direct-Injection Diesel Engine Equipped With a Common Rail Injection System." Journal of Engineering for Gas Turbines and Power 125, no. 2 (2003): 541–46. http://dx.doi.org/10.1115/1.1559900.
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To overcome the tradeoff between NOx and particulate emissions for future diesel vehicles and engines it is necessary to seek methods to lower pollutant emissions. The desired simultaneous improvement in fuel efficiency for future DI diesels is also a difficult challenge due to the combustion modifications that will be required to meet the exhaust emission mandates. This study demonstrates the emission reduction capability of EGR and other parameters on a high-speed direct-injection (HSDI) diesel engine equipped with a common rail injection system using an RSM optimization method. Engine testing was done at 1757 rev/min, 45% load. The variables used in the optimization process included injection pressure, boost pressure, injection timing, and EGR rate. RSM optimization led engine operating parameters to reach a low-temperature and premixed combustion regime called the MK combustion region, and resulted in simultaneous reductions in NOx and particulate emissions without sacrificing fuel efficiency. It was shown that RSM optimization is an effective and powerful tool for realizing the full advantages of the combined effects of combustion control techniques by optimizing their parameters. It was also shown that through a close observation of optimization processes, a more thorough understanding of HSDI diesel combustion can be provided.
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Markov, V. A., V. S. Akimov, V. A. Shumovskiy, and V. V. Markova. "Influence of mixed biofuel composition on the parameters of fuel injection process in diesel engine." Traktory i sel hozmashiny 81, no. 12 (2014): 3–9. http://dx.doi.org/10.17816/0321-4443-65465.
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Benefits of application of biofuels produced on the basis of plant oils in diesel engines are shown. Results of calculation research of fuel injection process in Д-245.12С diesel engine operating on diesel fuel and biofuels mixtures are given.
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Sivagamasundari, T., and N. Jayakumar. "Optimization of Diesel oil degrading Bacterial strains at various culture parameters." International Journal of Research and Development in Pharmacy and Life Sciences 6, no. 6 (2017): 2840–44. http://dx.doi.org/10.21276/ijrdpl.2278-0238.2017.6(6).2840-2844.
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Arokiasamy Remigious, Pradeep Kumar, Annamalai Kandasamy, and Premkartikkumar Selvi Rajaram. "An Experimental Investigation into Chosen Parameters of Diesel-Water Emulsion on Combustion Processes." Journal of Chemistry 2013 (2013): 1–6. http://dx.doi.org/10.1155/2013/764514.
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The purpose of this research is to investigate the effect of mixing water with diesel to make an emulsified fuel considering the needs for the vehicle performance and its cleanest possible operation. The test fuels chosen for the investigation are termed Emulsion 1 (EM1) and Emulsion 2 (EM2). EM1 is prepared in the ratio of 91/8/1 which represents 91% diesel, 8% water, 0.5% surfactant (Span 20), and 0.5% cosurfactant (Tween 20) with continuous stirring. EM2 has a composition of 94% diesel, 5% water, 0.5% Span 20, and 0.5% Tween 20. The stability of the emulsified fuel is checked for 8 hours. The performance and emission characteristics of EM1 and EM2 are compared with diesel fuel. The emission parameters such as hydrocarbon emission, carbon monoxide (CO) emission, smoke opacity, and oxides of nitrogen (NOx) emission have been measured. To compare the difference in performance characteristics between diesel fuel and emulsified fuel, brake thermal efficiency has been taken into account as a measure. Appreciable reductions of emission parameters have been obtained, and hence the investigation assures that this research could be further extended to biodiesel fuel as it produces more NOxthan diesel fuel.
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Čedík, Jakub, Martin Pexa, Michal Holúbek, Zdeněk Aleš, Radek Pražan, and Peter Kuchar. "Effect of Diesel Fuel-Coconut Oil-Butanol Blends on Operational Parameters of Diesel Engine." Energies 13, no. 15 (2020): 3796. http://dx.doi.org/10.3390/en13153796.
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The global concentration of greenhouse gasses in the atmosphere is increasing as well as the emissions of harmful pollutants. Utilization of liquid biofuels in combustion engines helps to reduce these negative effects. For diesel engines, the most common alternative fuels are based on vegetable oils. Blending neat vegetable oils with diesel and/or alcohol fuels is a simple way to make them suitable for diesel engines. In this study, coconut oil was used in ternary fuel blends with diesel and butanol. Coconut oil is a potentially usable source of renewable energy, especially in the Pacific, where it is a local product. Diesel fuel-coconut oil-butanol fuel blends were used in concentrations of 70%/20%/10% and 60%/20%/20%, and 100% diesel fuel was used as a reference. The effect of the fuel blends on the production of harmful emissions, engine smoke, performance parameters, fuel consumption and solid particles production was monitored during the measurement. The engine was kept at a constant speed during the measurement and the load was selected at 50%, 75% and 100%. From the results, it can be stated that in comparison with diesel fuel, specific fuel consumption increased with a positive effect on the reduction of engine smoke.
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Lievtierov, A. M., and A. M. Avramenko. "SELECTION OF GAS MIXER PARAMETERS FOR DIESEL CONVERSION GENERATOR MOTOR IN GAS DIESEL." Internal Combustion Engines, no. 2 (September 2, 2024): 12–18. http://dx.doi.org/10.20998/0419-8719.2024.2.02.
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According to literary sources, options for converting diesel engines into dual-fuel engines for operation on any fuel, in particular, natural gas (NG), were analyzed. The conversion method with external mixture formation and an ignition dose of liquid fuel involves the preparation of a gas-air mixture of the required composition in a special device. The methodology for choosing the design parameters of the gas mixer for the organization of the work process of a V-shaped diesel engine type 12Ch 15/17.5, converted into a gas diesel, which works as part of a motor-generator unit of backup power supply, is given. The basic design of the diesel motor-generator was analyzed. A comparative calculation of the working processes of diesel and gas-diesel variants of execution (with an ignition dose of diesel fuel of 10%) was carried out. The requirements for the design and location of the gas mixer have been formed. In the work, using 3D modeling technologies, the geometry of the gas mixer and its flow part were formed. Using the method of finite volumes, the calculation grid was synthesized and its adaptation near solid walls was carried out. Next, a series of numerical experiments was conducted in a three-dimensional setting to evaluate the throughput and quality of mixing network methane with air (when the robot is operating at typical operating modes). The distribution of flow velocities in the vertical and horizontal planes of the flow part of the gas mixer was evaluated, the change in pressure along the height of the gas mixer and the distribution of the mass fraction of methane in the flow part of the engine intake tract were analyzed, and scientific and practical recommendations were developed to ensure the efficient operation of gas diesel as part of a motor-generator installation. It is shown that the proposed design of the gas mixer allows effective mixing of methane with air when operating in the entire power range of the considered engine. The use of 3D modeling technologies, with the use of modern numerical methods, allows you to assess the operating conditions of the mixture by macro indicators and in local sub-regions, which allows, in the future, to develop recommendations for increasing the efficiency of the process of preparing the fuel-air mixture.
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Abu-Hamdeh, Nidal H., and Khaled A. Alnefaie. "Bio-Diesel from Almond Oil as an Alternative Fuel for Diesel Engines." Applied Mechanics and Materials 575 (June 2014): 624–27. http://dx.doi.org/10.4028/www.scientific.net/amm.575.624.
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Different fuel blends containing 10, 30 and 50% almond oil with diesel fuel were prepared and the influence of these blends on emissions and some performance parameters were inspected using a diesel engine. The blends and the diesel fuel were examined under various load conditions and the results showed that almond-blended fuels have slightly different properties than diesel fuel. Measured engine performance parameters have generally showed a slight increase in exhaust gas temperature and in brake specific fuel consumption, and a slight reduction in brake thermal efficiency. Blending of almond oil with diesel fuel reduced the engine CO and increased NOx percentages.
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Hu, Peng, Ping Sun, Hai Qiang Ning, and De Qing Mei. "Calculation and Analysis of the Thermophysical Parameters of Micro-Emulsified Ethanol-Diesel Blended Fuel." Applied Mechanics and Materials 271-272 (December 2012): 121–25. http://dx.doi.org/10.4028/www.scientific.net/amm.271-272.121.
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The micro-emulsified ethanol-diesel blended fuel is an ideal alternative oxygenous fuel for diesel engines due to its physical and chemical properties and excellent combustion characteristics. Fueled with this fuel, a diesel engine can give off remarkably lower harmful emissions,especially particulate. It is necessary to take into account instantaneous variations of the thermophysical parameters of blended fuels with temperature and pressure. For these reasons, this paper use the empirical formulas calculates the thermophysical parameters of this blended fuel，including the specific heat capacity, viscosity, thermal conductivity and diffusion coefficient. And the effects of the temperature, pressure and ethanol content on the initial blended fuel’s condition are investigated. The results show that the addition of some ethanol to the diesel oil can contribute to the evaporation of the micro-emulsified ethanol-diesel blended fuel, and these empirical formulas are able to be employed to calculate the thermophysical parameters of this blended fuel.
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Bai, Yu Jie, Hong Xia Cai, and Tao Yu. "Parameters Optimization on Method of Improving Diesel Nozzles’ Flow Coefficient and Flow Uniformity." Applied Mechanics and Materials 620 (August 2014): 386–90. http://dx.doi.org/10.4028/www.scientific.net/amm.620.386.
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This paper investigates methods to improve the flow coefficient of diesel nozzles so that the combustion efficiency can be improved and the emissions from diesels can be reduced. And abrasive suspend flow was introduced as the last process step of improving the flow coefficient and controlling the flow at a small range. To find appropriate parameters to make the measured flow after processing as far as close to the set flow, an orthogonal experiment was designed and implemented. According the analysis to the orthogonal experimental result, several line charts about the fluctuation caused by parameter were shown and a group of appropriate parameters was determinate.
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Shatrov, Mikhail, Aleksej Khatchiyan, Vladimir Sinyavskiy, Ivan Shishlov, and Andrey Vakulenko. "ANALYSIS OF CALCULATED CYCLES PARAMETERS IN CASE OF NATURAL GAS SUPPLY AND DIESEL ENGINE." Agricultural Engineering 46, no. 1 (2014): 78–84. http://dx.doi.org/10.15544/ageng.2014.007.
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The paper is dedicated to comparative analysis of cycles of engines supplied with natural gas having diesel compression ratio and quality power control with the basic diesel engine cycle. Two types of gas engines were investigated: with internal mixture formation and glow plug air-gas mixture ignition; with external mixture formation and air-gas mixture ignition with the help of pilot diesel fuel injection. Calculation results by external speed characteristics demonstrated that the gas engines were at least as good as the base diesel engines as regards to power and fuel efficiency. At the same time they have lower mechanical and thermal loads and considerably lower СО2 emissions.
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Borisov, Sergey V., Aleksandr E. Lomovskikh, Oleg E. Prilepin, Timur R. Mamatkazin, and Anatoliy V. Dunayev. "STUDYING OF THE EFFECT OF WATER-FUEL MIXTURE ON OPERATIONAL PARAMETERS OF A DIESEL." Tekhnicheskiy servis mashin 2, no. 143 (2021): 54–61. http://dx.doi.org/10.22314/2618-8287-2021-59-2-54-61.
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Improving the parameters of diesel engines is an urgent task. Work has been carried out to significantly reduce the consumption of their fuel with the introduction of water dispersions into the fuel. Currently, water-fuel emulsions with exotic emulsifiers are mainly tested. (Research purpose) The research purpose is in creation of a water-fuel emulsion without an emulsifier with a simple installation and identifying the influence of the composition and quality of this WFE on the performance of the YaMZ-236 diesel engine. (Materials and methods) The article presents a plant for the preparation of a "rough" water- fuel mixture from diesel fuel according to GOST 32511-2013 and distilled water according to GOST 6709. Authors conducted standard bench tests at the KI-5540- GOSNITI stand with a YaMZ-236 diesel engine with an upgraded fuel system and performed the control of the smoke content of the exhaust gases with the gas analyzer "AUTOTEST". The dependence of diesel performance indicators on the composition and dispersion of water-fuel emulsions without an emulsifier was studied experimentally with a minimum number of tests, but with the maximum possible combination of the values of three variable factors. (Results and discussion) The influence of various water-fuel emulsions on the performance of the diesel engine was evaluated according to the plan of a full factor experiment, including 20 tests. The second-order regression equations were obtained by mathematical processing of the test results. The feasibility of using water-fuel emulsions for diesel engines was confirmed. By modeling a water-fuel mixture without emulsifiers, there was created an aqueous dispersion with drops up to two micrometers. In the load tests of the diesel engine with it, there was noticed an improvement in its performance. (Conclusions) The introduction of 17-20 percent water dispersion with drops of up to two micrometers into diesel fuel reduced the specific fuel consumption by 18 percent, the smokiness in the K indicator by 20- 22, and in the N indicator by 30-35 percent.
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Likhanov, V. A., A. V. Grebnev, M. L. Skryabin, and A. E. Toropov. "Speed characteristics of automobile diesel engine operating on natural gas." Izvestiya MGTU MAMI 11, no. 4 (2017): 39–45. http://dx.doi.org/10.17816/2074-0530-66847.
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The article presents the graphs of the D-245.7 diesel engine's high-speed characteristics during gas-diesel operation. One of the ways to improve the efficiency of road transport is now to convert vehicle engines into alternative, cheaper fuels. Among various alternative fuels, natural gas is very attractive. If the diesel engine is to be converted to natural gas, then the implementation of the gas-diesel process will be the best method of transfer. There is not enough information in the literature on this issue, so research on this topic is relevant. In the Vyatka State Agricultural Academy research was carried out on the transfer of diesel D-245.7 to the gas-diesel process, the parameters of the combustion process, heat release characteristics, and effective indicators were determined. Work on the gas-diesel process leads to increase in the values of the parameters of the combustion process and the characteristics of heat release in the cylinder of the diesel engine. At the same time, thermal and mechanical loads increase slightly. In the initial periods of combustion in the cylinder, the speed and the value of the active heat release increase. This change indicates that combustion takes place by a three-dimensional mechanism. On the gas-diesel process, as compared to the diesel process, the hourly air consumption decreases, the temperature of the exhaust gases decreases, the boost pressure decreases, the effective efficiency decreases slightly, but the power and torque do not decrease. On the basis of the research, the following conclusions are drawn: 1) during the transition to the gas-diesel process, the pressure, the temperature in the cylinder, the rate of pressure increase rises, but the maximum values of these parameters do not exceed the permissible limits of diesel engines; 2) in the gas-diesel process, combustion in the cylinder occurs by a volumetric mechanism, most of the fuel burns in the rapid combustion phase; 3) the engine power parameters at the gas-diesel process in the entire speed range fully correspond to the diesel process; 4) when the diesel engine operates on an external high-speed characteristic on a gas-diesel process compared to a diesel process, a reduction of diesel fuel consumption by at least 83 % is achieved by replacing it with natural gas.
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Xiao, Jian Kun, and Xian Lan Lu. "Research on Diesel Engine Rotate Speed Fluctuation Fuzzy Fault Diagnosis." Advanced Materials Research 988 (July 2014): 576–81. http://dx.doi.org/10.4028/www.scientific.net/amr.988.576.
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Making diesel engine fault diagnosis technology as the research object, we analyzed the signals mechanism of diesel engine rotating speed fluctuation, and picked up and processed it. In view of the fault mechanism, we selected the fault characteristic parameters. By simulating the diesel engine oil leak off fault, we extracted the relevant fault characteristic parameters. Fuzzy theory was applied to fault diagnosis of diesel engine, and test the effectiveness of the diagnostic method, it is concluded that the ideal diagnosis effect.
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Dong, Yi, Jianmin Liu, Yanbin Liu, et al. "A RBFNN & GACMOO-Based Working State Optimization Control Study on Heavy-Duty Diesel Engine Working in Plateau Environment." Energies 13, no. 1 (2020): 279. http://dx.doi.org/10.3390/en13010279.
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In order to solve issues concerning performance induction and in-cylinder heat accumulation of a certain heavy-duty diesel engine in a plateau environment, working state parameters and performance indexes of diesel engine are calculated and optimized using the method of artificial neural network and genetic algorithm cycle multi-objective optimization. First, with an established diesel engine simulation model and an orthogonal experimental method, the influence rule of five performance indexes affected by five working state parameters are calculated and analyzed. Results indicate the first four of five working state parameters have a more prominent influence on those five performance indexes. Subsequently, further calculation generates correspondences among four working state parameters and five performance indexes with the method of radial basis function neural network. The predicted value of the trained neural network matches well with the original one. The approach can fulfill serialization of discrete working state parameters and performance indexes to facilitate subsequent analysis and optimization. Next, we came up with a new algorithm named RBFNN & GACMOO, which can calculate the optimal working state parameters and the corresponding performance indexes of the diesel engine working at 3700 m altitude. At last, the bench test of the diesel engine in a plateau environment is employed to verify accuracy of the optimized results and the effectiveness of the algorithm. The research first combined the method of artificial neural network and genetic algorithm to specify the optimal working state parameters of the diesel engine at high altitudes by focusing on engine power, torque and heat dissipation, which is of great significance for improving both performance and working reliability of heavy-duty diesel engine working in plateau environment.
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Apazhev, Aslan, Yury Shekikhachev, Vyacheslav Dzuganov, Vladimir Batirov, Anzor Bolotokov, and Hussein Gubzhokov. "Operational studies of the stability and uniformity of fuel supply parameters." АгроЭкоИнфо 5, no. 53 (2022): 4. http://dx.doi.org/10.51419/202125504.
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The article presents the results of operational studies of the stability and uniformity of the fuel supply parameters, using the diesel fuel equipment standardization system, measures are formulated to reduce the specific fuel consumption of engines entering operation after repair and maintenance. Keywords: DIESEL, FUEL, FUEL EQUIPMENT, CONSUMPTION, REPAIR, MAINTENANCE, STANDARDIZATION
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Chen, Guo Jin, Zhang Ming Peng, Jian Guo Yang, and Qiao Ying Huang. "Experimental Study on Wear Monitoring of Marine Diesel Engine’s Piston Ring by Magnetoresistive Sensor." Advanced Materials Research 424-425 (January 2012): 132–36. http://dx.doi.org/10.4028/www.scientific.net/amr.424-425.132.
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On the diesel engine’s test bed, this paper has studied the parameters regarding the diesel engine’s rotational speed, the piston ring’s width and wearing capacity and so on, and their relation with the output signal of the magnetoresistive sensor under the reverse drawing of the diesel engine. The research discovered that the piston ring’s wear and the magnetoresistive sensor’s output have the corresponding relationship. And on the oil tanker with the 6RTA52U diesel engine, the influence of the diesel engine’s operating parameters and the load situations to the magnetoresistive sensor’s output is surveyed under four kinds of different operating modes. The test result and the research conclusion provide the technical foundation for the online Wear monitoring of the large-scale marine diesel engine’s piston ring.
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Felayati, Frengki Mohamad, Dwisetiono, Hadi Prasutiyon, and Betty Ariani. "Study on Natural Gas/Diesel Dual-fuel Engine Energy Ratio: Effect of Natural Gas Injection Parameters." IOP Conference Series: Earth and Environmental Science 1081, no. 1 (2022): 012038. http://dx.doi.org/10.1088/1755-1315/1081/1/012038.
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Abstract Natural gas has been a promising demand for several years in Indonesia as a fuel for a diesel engine by converted into a natural gas/diesel dual-fuel engine. However, determining the energy ratio of the diesel and natural gas fuel is important due to the engine performance and emissions which affect the engine safety operation. This study presents the method to determine the natural gas and diesel fuel energy ratio on intake port natural gas injection mode through experiment. A direct injection diesel engine is converted to a natural gas/diesel dual-fuel engine by injecting natural gas into the intake port. The diesel injection parameters are unmodified for the experiment; besides the natural gas injection variations are studied to determine the energy ratio. Moreover, the engine is tested for low to high load conditions. However, natural gas injection duration, pressure, and injection timing variation affect the fuel energy ratio and indicated thermal efficiency (ITE). At low load, the optimum fuel energy ratio and ITE are achieved at a long injection duration (10 ms) and with advanced injection timing. Moreover, at high load, the optimum fuel energy ratio and ITE is achieved at high natural gas injection duration (12 ms), high injection pressure (3 bar), and advancing the injection timing.
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Mihailescu, Florentina Cristina, Marieta Balcan, Monica Elisabeta Maxim, and Dan Florin Anghel. "Combustible Microemulsions with Diesel and Diesel Admixed with Rapeseed Oil." Revista de Chimie 70, no. 9 (2019): 3163–66. http://dx.doi.org/10.37358/rc.19.9.7508.
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Novel results on combustible microemulsions prepared with diesel (D), blends of diesel and rapeseed oil (RSO), and mixtures of eco-friendly amphiphiles are presented. Water solubilization in oil/amphiphile systems was estimated by pseudo-ternary diagrams whereas the phase behavior by Winsor (W) diagrams. The extent of single-phase microemulsion (SPM) area depends on the amphiphile and oil phase composition. The presence of cosurfactant in the anionic-nonionic surfactant mixture increases very much the SPM area, but no effect is observed when half of D is replaced by RSO. In the pseudo-ternary phase diagram, the addition of organic electrolyte decreases the SPM areas. The microemulsions were characterized by the oil/water interfacial tension (gow), and the oil and water solubilization parameters (SPo) and (SPw). The results obtained reveal that the W III microemulsions have minimal goow values, whereas SPo and SPw are maximal. The work connects the phase behavior with the interfacial tension and the solubilization parameters of oil and water and is useful for obtaining and developing optimal microemulsions as alternative fuels.
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MUTLURI, Avinash, Radha Krishna GOPIDESI, and Srinivas Viswanath VALETI. "A Research on the Performance, Emission and Combustion Parameters of the Hydrogen and Biogas Dual Fuel Engine." INCAS BULLETIN 12, no. 3 (2020): 129–36. http://dx.doi.org/10.13111/2066-8201.2020.12.3.10.
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In the present research a diesel engine has been converted to dual fuel mode, injecting hydrogen and biogas as secondary fuel and the tests were conducted in dual fuel mode to evaluate the performance, emissions and combustion parameters of the engine. Diesel as a pilot fuel, hydrogen and biogas as a secondary fuel were injected from the inlet manifold. The hydrogen and the biogas which is a gaseous fuel were injected at 5 liters per minute (lpm) and the tests were conducted separately. From these tests, it was noted that there is an enhancement of 27.28% in brake thermal efficiency (BTE) and increment of 10.70% in NOX emissions for diesel with 5 lpm hydrogen compared with diesel fuel under single fuel mode. Also, it was noted that the reduction in BTE was around 36.50% and NOX emissions about 15.68 % for diesel with 5 lpm biogas when compared with diesel fuel under single fuel mode.
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Kumar, Prem, Mandeep Singh, and Sarbjot Singh Sandhu. "Wavelet analysis for cyclic combustion dynamics of a multi-cylinder CRDI diesel engine fuelled with a blending of argemone biodiesel–diesel oil." Chaos: An Interdisciplinary Journal of Nonlinear Science 32, no. 4 (2022): 043107. http://dx.doi.org/10.1063/5.0080910.
Full textAbstract:
Higher cyclic variability in combustion adversely influences emissions, efficiency, and driveability of internal combustion engines. In this paper, we used wavelet transform techniques to investigate the dynamical characteristics of a combustion process in numerous combustion parameters of a 4-cylinder turbocharged common rail direct injection (CRDI) diesel engine fuelled with Argemone mexicana biodiesel (AGB)/diesel blended fuel. In addition, statistical analysis is described to validate the results of the wavelet spectrum methods for cyclic variation in the diesel engine. The results show that the cyclic variations in IMEP and Pmax are sensitive to the engine load and fuel properties. The coefficient of variation of both combustion parameters decreases as engine load increases for all tested fuels. Moreover, adding Argemone mexicana biodiesel (AGB) into diesel fuel up to 20% (AB20) reduces cyclic variations in combustion parameters at all tested engine loads. Furthermore, the global wavelet spectrum and wavelet power spectrum are utilized to identify the dominant oscillatory combustion modes. The cycle-to-cycle fluctuations in combustion parameters (i.e., IMEP and Pmax) exhibit multi-scale dynamics for all experimental conditions. Compared to long and intermediate oscillations in diesel fuel, AB10 and AB20 fuel showed short and intermittent period fluctuations. The findings of this experimental work will be helpful to optimize engine control strategies for AGB/diesel blended fueled multi-cylinder CRDI diesel engines.