To see the other types of publications on this topic, follow the link: Diesel-RK software.
Journal articles on the topic 'Diesel-RK software'
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the top 34 journal articles for your research on the topic 'Diesel-RK software.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.
1
Dr., Rajeesh S., Kumar Jawahar Hemanth, B. Madhusudhan, Kumar V. Nitish, and R. Sujitha. "Simulation ofthe Performance and Emission Analysis of Diesel BlendBiofuel Obtained From Cold Pressed Hemp Seed Oil with and withoutSuitable Nano Additives." International Journal of Research in Aeronautical and Mechanical Engineering 9, no. 11 (2021): 10–31. https://doi.org/10.5281/zenodo.5683310.
Full textAbstract:
According to the test on a typical modern Euro 6 diesel engine conducted by the International Council on Clean Transportation (ICCT), it was found that it emits 7 to 10 times more Nitrogen Dioxide than the achieved Euro 6 Test Limits (80mg/ km). In 2018, a total of 24% of global CO2 emissions from fuel combustion came from transportation. This truly calls for the need for a lesser polluting alternative fuel in the automotive industry. After being inspired by the work done by researchers all across the globe on biodiesel, we propose the idea of synthesizing biofuels from cold-pressed hemp methyl ester. First, we conducted alkaline transesterification to produce hemp methyl ester from the cold-pressed hemp seed oil. Based on the Gas Chromatography-Mass Spectrometry (GCMS) analysis report of the hemp methyl ester from the literature, we found out the physical and chemical properties of it using BioDiesel Analyzer software. We compared the physical and chemical properties of the hemp methyl ester with diesel as per the ASTM standard D975 for diesel. We conducted the Diesel RK simulation of the performance and emission parameters of a Compression Ignition(CI) Engine test rig using diesel, pure hemp methyl ester, and diesel blended with hemp methyl ester in the ratio 80:20 by volume(B20). The performance and emission parameters obtained from the Diesel RK software are compared with that of standard diesel emissions. If higher emissions of any of the greenhouse gases are reported from the Diesel RK simulation, a suitable nano additive is proposed after an extensive critical analysis.
2
MOHD NOOR, CHE WAN, and MOHD HAFIZUDDIN. "Analysing the Impact of Various Diesel Types on the Performance and Emissions of Marine Diesel Engines Using Diesel-RK Software." Universiti Malaysia Terengganu Journal of Undergraduate Research 7, no. 1 (2025): 16–26. https://doi.org/10.46754/umtjur.v7i1.425.
Full textAbstract:
Software applications to solve engineering problems and performance issues of marine diesel engines are becoming easier in current trends due to the rapid development of technology and computer science. However, the cost of software kits for users is very high and burdensome, especially for researchers in developing countries. Alternatively, Diesel-RK software is an open-source program created to help researchers in modelling and making predictions on the performance and exhaust emissions of a diesel engine. Therefore, this work presents the results of the Diesel-RK application for simulating performance, emissions, and the capability of use of another type of diesel by marine diesel engines of 4-cycle-inlined 6-cylinder, and suggests the best type of diesel fuel for testing on an actual marine engine. Different types of diesel fuel, such as Light Fuel Oil 1 (LFO-1), Diesel No. 2, EN590, and Heavy Fuel Oil, were tested in this simulation. The engine performance and emission parameters, such as brake power, torque, specific fuel consumption, thermal efficiency, Nitrogen Oxide (NOx) emissions, and Carbon Dioxide (CO2) emissions, were analysed. The research indicated that utilising EN590 fuel resulted in enhanced marine diesel engine performance, including improved brake power, torque, thermal efficiency, and fuel consumption. Moreover, EN590 fuel exhibited significantly reduced NOx and CO2 emissions compared to Diesel No.2, LFO-1, and Heavy Fuel, offering valuable guidance for both simulation and practical engine studies.
3
Romanov, A. V., and S. A. Skomorovsky. "Comparison of thermodynamic models of various levels of complexity for the calculation of a diesel engine operating on the Miller cycle." Transactions of the Krylov State Research Centre S-I, no. 1 (2021): 89–91. http://dx.doi.org/10.24937/2542-2324-2021-1-s-i-89-91.
Full textAbstract:
A comparison of the results of calculations performed by the Grinevetsky-Mazing method and in the Diesel-RK software package, the working cycle of a diesel engine operating according to the Miller method, is presented. At the same boost pressures, if the closing angles of the intake valve differ by 24° CAD, the compression start pressure and the calculation results and the P-CAD diagrams of the working cycle strokes become almost identical.
4
Lipskis, Imantas, Saugirdas Pukalskas, Paweł Droździel, Dalibor Barta, Vidas Žuraulis, and Robertas Pečeliūnas. "Modelling and Simulation of the Performance and Combustion Characteristics of a Locomotive Diesel Engine Operating on a Diesel–LNG Mixture." Energies 14, no. 17 (2021): 5318. http://dx.doi.org/10.3390/en14175318.
Full textAbstract:
The article describes a compression-ignition engine working with a dual-fuel system installed in diesel locomotive TEP70 BS. The model of the locomotive engine has been created applying AVL BOOST and Diesel RK software and engine performance simulations. Combustion characteristics have been identified employing the mixtures of different fuels. The paper compares ecological (CO2, NOx, PM) and energy (in-cylinder pressure, temperature and the rate of heat release (ROHR)) indicators of a diesel and fuel mixtures-driven locomotive. The performed simulation has shown that different fuel proportions increased methane content and decreased diesel content in the fuel mixture, as well as causing higher in-cylinder pressure and ROHR; however, in-cylinder temperature dropped. CO2, NOx and PM emissions decrease in all cases thus raising methane and reducing diesel content in the fuel mixture.
5
Kuleshov, A. S., V. A. Markov, V. V. Furman, and S. V. Plakhov. "Computational study of the diesel fuel ignition dose effecting the gas-diesel engine operation process." Proceedings of Higher Educational Institutions. Маchine Building, no. 12 (753) (December 2022): 87–106. http://dx.doi.org/10.18698/0536-1044-2022-12-87-106.
Full textAbstract:
Relevance of the article is determined by the need to replace petroleum diesel fuel with motor fuels obtained from the alternative raw materials. Natural gas is considered as the promising alternative fuel. Using the DIESEL-RK software package, computational studies were made of the diesel fuel ignition dose effect on the operation process of the 6 ChN 31.8/33 locomotive gas-diesel engine. The engine diesel and its gas-diesel cycles with the ignition dose of diesel fuel equal to 5, 10, 15 and 20% were determined. Differences in the efficiency values ??of the diesel engine under study with alteration in the diesel fuel ignition dose were not exceeding 2.7%. Diesel engine conversion to the gas-diesel cycle made it possible to significantly reduce the smoke from exhaust gases (to 90%), as well as the specific mass emissions with the exhaust gases of nitrogen oxides (to 18%) and carbon dioxide (to 23%). Expediency of changing the diesel fuel ignition dose of a gas-diesel engine with alteration in the speed and load modes of its operation was noted.
6
Kuleshov, Andrey, Alexey Kuleshov, Vladimir Markov, Fedor Karpets, Venera Yumagulova, and Aidar Nurullin. "Study of the working process of a dual-fuel hydrogen engine." E3S Web of Conferences 390 (2023): 05020. http://dx.doi.org/10.1051/e3sconf/202339005020.
Full textAbstract:
The relevance of the article is due to the need to replace petroleum fuels with motor fuels obtained from alternative raw materials. Hydrogen is considered as a promising alternative fuel. The use of hydrogen as a motor fuel makes it possible to solve the problem of a cardinal reduction in carbon dioxide emissions into the atmosphere. Using the DIESEL-RK software package, computational studies of the effect of hydrogen supply on the working process of the gas-diesel engine D-245 were carried out. The diesel cycle of the engine and its gas-diesel cycle were calculated with hydrogen supplies equal to 5, 10, 20, 40, 60 and 80% (taking into account the difference in the heat of combustion of the studied fuels). The maximum effective efficiency of a diesel engine is achieved when 40% hydrogen is supplied to the combustion chamber. In this case, compared to operation only on petroleum diesel fuel, the effective efficiency of the diesel engine increased by 7%.
7
Kuleshov, A. S., M. V. Gordin, V. A. Markov, F. B. Barchenko, and F. S. Karpets. "Computational Study of the Working Process of a Dual-Fuel Hydrogen Engine." Engines Construction, no. 289 (September 2022): 70–96. http://dx.doi.org/10.18698/jec.2022.3.70-96.
Full textAbstract:
from alternative raw materials. Hydrogen is considered as a promising alternative fuel. Using the Diesel-RK software package, computational studies of the effect of hydrogen supply on the workflow of a D-245 gas-diesel engine were carried out. The diesel cycle of the engine and its gas-diesel cycle with hydrogen supplies equal to 5, 10, 20, 40, 60 and 80 % are calculated (taking into account the difference in the heat of combustion of diesel fuel and hydrogen). The maximum equivalent efficiency of the diesel engine is achieved when 40 % hydrogen is supplied to the combustion chamber. In this case, compared to working only on petroleum diesel fuel, the effective efficiency of diesel increased by 6.7 %. The transition of diesel engines from petroleum diesel fuel to work with the addition of hydrogen in an amount of 40 % is accompanied by a decrease in the specific emission of carbon dioxide by 44 %, the smokiness of exhaust gases by 53 %. However, an increase in the content of nitrogen oxides in exhaust gases by 27 % was noted.
8
Singh, Gurkamal Nain, Rabinder Singh Bharj, and Rajan Kumar. "Numerical Investigation on Performance and Emission Characteristics of a Diesel Engine Fired With Methanol Blended Diesel Fuel." Journal of Mechanical Engineering 16, no. 2 (2019): 41–52. http://dx.doi.org/10.24191/jmeche.v16i2.15325.
Full textAbstract:
The effects of methanol and oleic acid blended diesel fuel on the performance and emissions of the diesel engine are evaluated numerically by commercial software Diesel-RK to simulate a single cylinder, naturally aspirated, direct injection, four-stroke diesel engine. The present study also resolves the problem of the immiscibility of methanol in diesel fuel, as to avoid immiscible nature an optimum percentage of oleic acid and n-butanol is added to make blends stable. The methanol blended diesel fuels are 7%, 12%, and 17% methanol in volume basis (D85M7NB1O7, D75M12NB1O12, and D65M17NB1O17). A drastic reduction in NOx emission is observed due to low combustion temperature however the PM emissions increases which can be controlled by using exhaust after-treatment techniques. The results indicate that: the brake specific fuel consumption increases and brake thermal efficiency decreases with an increase of methanol, oleic acid and n-butanol contents in the blended fuel whereas maximum heat release rate increases and exhaust temperature decreases.
9
Al-obaidi, Wisam, and Wasim Jamshed. "A numerical study of the effects of various diesel fuel types on the performance of single-cylinder diesel engines." Al-Qadisiyah Journal for Engineering Sciences 17, no. 4 (2024): 436–44. https://doi.org/10.30772/qjes.2024.153932.1401.
Full textAbstract:
The present study examines numerically the combustion, performance, and emissions parameters of diesel engines powered by different grades of diesel. The Diesel-RK software version 4.3.0.189 is used to simulate the combustion process with a multi-zone model. The Iraqi diesel, EN 590, Heavy diesel, and light diesel are considered. Their energy content, sulfur, cetane number, and other additives are different, hence it's logical to observe different results. The condition of full load point is selected since the air-to-fuel ratio is minimum, hence a better comparison among the fuels is captured. The diesel EN 590 reported a lower ignition delay ( 9.1 deg.) due to the lower cetane number, while it is 10.8, deg. 17.4 deg., and 14.1 deg. for Iraqi diesel, heavy diesel, and light diesel respectively. Compared to other fuels considered the light diesel offered lower fuel consumption and higher thermal efficiency. The results showed less CO2 emissions in the case of light diesel (778.3 kg/kWh), compared to heavy diesel which had an obvious rise in CO2 emissions (817.08 kg/kWh). The difference in the density chemical structure, the results showed that Bosh smoke number (BSN) values of Iraqi, and EN 590 diesel were almost the same at 1.39, and 1.385 respectively, while the BSN of light diesel was slightly higher at 1.44 compared to 1.8 for heavy diesel. The higher NOx levels of about 2400 and 2225 ppm, respectively, were produced by Iraqi and EN 590 diesel. But out of all the fuels, heavy diesel had the lowest NOx rating, at 1000 ppm.The accuracy of the software used is validated with the results of other studies.
10
Kuznetsov, A. G., and S. V. Kharitonov. "Formation of Static Characteristics of a Diesel Engine." Proceedings of Higher Educational Institutions. Маchine Building, no. 01 (718) (January 2020): 43–50. http://dx.doi.org/10.18698/0536-1044-2020-1-43-50.
Full textAbstract:
The introduction of modern diesel fuel supply systems and the use of electronic components in control systems provide new possibilities for shaping engine characteristics targeted at specific energy consumers. Under these conditions, the type of engine characteristics is determined by the operation of the air supply system. This work examines the formation of static characteristics for a promising D500 diesel engine for train and ship power plants. Modeling of the diesel operation modes is carried out on computer models in the MATLAB/Simulink and Diesel-RK software packages. Variants of the full-load curves of the diesel engine are presented for different ways of turbocharger control: using a turbine of variable geometry and with sequential turbocharging. The fuel supply is limited according to the air-fuel ratio and the maximum pressure in the engine cylinders. For a variable geometry turbine, a matrix of the positions of the guide vane blades is obtained from the condition of optimizing diesel modes for fuel efficiency. Possibilities to obtain the efficiency characteristic that would provide the minimal fuel consumption for train and ship power plants are shown.
11
Nhad K. Frhan Al-Abboodi and Farah Abdulzahra Taher. "Numerical Investigation of Split Injection Strategies and Injector Nozzle Bore Influence on Combustion and Emissions." CFD Letters 15, no. 8 (2023): 50–72. http://dx.doi.org/10.37934/cfdl.15.8.5072.
Full textAbstract:
The power generation mainly depends on fossil diesel fuel, the primary source of harmful emissions and global warming. Therefore, the researcher aims to explore alternative fuels that got greater attention in compression ignition engines. The commercial Diesel-RK software simulates the current numerical study of diesel engine direct injection with speed engine 1500 rpm, compression ratio 17.5, single cylinder, and naturally aspirated. In the basis of the parliamentary research, the literature did not investigate the influence of combustion and emission characteristics of compression ignition engines by using various double and trouble injection strategies along with different injector nozzle bore sizes. Also, the initiative was undertaken to study the effect of the different diesel-biodiesel blends ratio studied, SP20 (80% diesel+20% spirulina), Sp40(60% diesel+40% spirulina), and Sp100(0% diesel +100% spirulina) While the scope of the gap expanded to include a comparison of results with baseline diesel fuel. The results show that MPR increased by 4.2%, maximum gas temperature increased by 8.9%, ignition delay increased by 7.9%, maximum heat release rate decreased by 9.5%, NOx decreased by 7.8%, CO2 decreased by 3.9%, and particularly matter emissions decreased by 6.3% were compared to the double injection scheme , at 0.2 mm(INB)
12
Bhavesh Pathak and Nikul Patel. "Thermodynamic Performance of an Engine by Modifying Piston Bowl Geometries Fuelled by SME-100, LA-100, KB-100 Biodiesel Blends, and Diesel." Journal of Advanced Research in Fluid Mechanics and Thermal Sciences 102, no. 1 (2023): 1–13. http://dx.doi.org/10.37934/arfmts.102.1.113.
Full textAbstract:
Simulation of Direct injection (DI) compressed ignition (CI) engine working on diesel thermodynamic cycle on diesel-Rk software carried out for evaluating the effect on thermal performance. The analysis of an engine was worked out by applying different bowl geometrical shapes and by testing with different fuels. Further same compositions were tested on an experimental test rig having a set-up of (compressed ignition, single cylinder, four strokes, air-cooled, direct injection) diesel engine at constant crank speed. Hemispherical (HCC), Shallow depth (SCC), Re-entrant (RCC), Double wedge shallow, and Toroidal (TCC) piston geometries were created in solid-work and analyzed with B-100 blend of SME (Soybean Methyl Ester), KB (Karanja Biodiesel), LA (Roselle Biodiesel) and diesel further they were analyzed and their effects have investigated experimentally and numerically at fully loaded condition, with a constant crank speed of 1500 rpm and by setting constant compression ratio at 17.5. BSFCs were higher by 21.03%, 12.97%, and 12.96% for SME100, KB100, and LA100 with hemispherical, toroidal, and re-entrant type combustion chambers compared with the diesel fuel. Indicated thermal efficiencies and ignition delay periods were reported slightly lower for different blends and pure biodiesel than diesel at specific load conditions whereas combustion durations were reported higher compared to diesel.
13
Sinha, Indranil, Ambarish Datta, and Bijan Mandal. "Effect of different quaternary blends of diesel-ethanol-methanol-butanol on combustion and spray characteristics of diesel engine." Thermal Science, no. 00 (2024): 190. http://dx.doi.org/10.2298/tsci240212190s.
Full textAbstract:
The impact of different diesel-ethanol-methanol-butanol (DEMB) blends on the spray and combustion characteristics of a single-cylinder diesel engine has been investigated. For this study, commercially available software called Diesel-RK that can predict the spray and combustion parameters has been utilized. Some experiments have also been conducted using D100 (100% pure diesel by volume) fuel at a fixed speed of 1500 rpm at peak load while maintaining the same operating conditions as the simulation. The predicted results have been validated against the experimental results obtained with D100. The results of the simulation were found to be in reasonably good agreement with those of the experiment. The analysis of the simulated results shows that the heat release rate, ignition delay and peak cylinder pressure increase for all quaternary blends, whereas the peak combustion temperature decreases at low load and increases at higher load. In terms of spray characteristics, the investigations show that quaternary alcohol blends shorten spray tip penetration (STP) and increase spray cone angle (SCA). Furthermore, as the proportion of ethanol and methanol in the DEMB blends increases, the atomized fuel droplets become smaller in diameter and the sauter mean diameter (SMD) of the blends gradually drops. The authors also suggest that the quaternary blends of this present investigation have a higher potential to be used as a next-generation fuel in diesel engine.
14
Burlaka, Serhii, and Oleksii Tokarchuk. "REMOVAL OF TECHNICAL AND ECONOMIC INDICATORS OF THE D-240 ENGINE WHEN USING BIOFUELS BY APPLYING THE DIESEL-RK SOFTWARE COMPLEX." ENGINEERING, ENERGY, TRANSPORT AIC, no. 4(115) (December 24, 2021): 24–34. http://dx.doi.org/10.37128/2520-6168-2021-4-3.
Full textAbstract:
Ukraine is one of the energy-deficient countries because it covers its needs in fuel and energy resources from domestic reserves by only 53% (imports 75% of the required natural gas and 85% of crude oil and petroleum products). Dependence on oil imports is seen by most developed countries as a matter of national and energy security, and the use of petroleum products as energy sources poses a significant environmental risk. According to the analysis of the state of the world engine industry, the most effective measures to improve the design of the engine are: development and implementation of a new workflow with effective methods of mixing and combustion; development and creation of the design of the system of automatic regulation of diesel rotation. frequency to improve fuel economy And to reduce toxicity in partial load mode, some cylinders are switched off at idle. To strengthen the requirements for fuel consumption standards and the level of toxicity of exhaust gases, as well as to increase the reliability and efficiency of agricultural power engines, it is necessary to formulate measures to improve its design. The choice of a fuel should be determined by the optimal combination of environmental and economic performance of the engine. Prospects for the use of a particular fuel of plant origin are noted. If for fuels of petroleum origin the improvement of its properties is determined by special processing, then oils with the set characteristics can be received already in "field" by selection of the corresponding grades of plants, use of fertilizers, agronomic actions, etc. The problem of reducing the consumption of diesel fuel at idle and low load can be solved by excluding from its operation part of the cylinders (this method is widely used) and closing the cycle of one cylinder. A comparative analysis of the main technical and environmental performance of the D-240 diesel engine when working on traditional and alternative fuels using the computer program Diesel-RK.
15
Grachev, Vladimir, Mihail Fedotov, Aleksandr Grischenko, Fedor Bazilevskiy, and Aleksandr Sharapov. "Locomotive Diesel Gas-Air Tract Diagnostics with the Use of Intellectual Classifier." Bulletin of scientific research results, no. 2 (June 23, 2022): 124–40. http://dx.doi.org/10.20295/2223-9987-2022-2-124-140.
Full textAbstract:
Purpose: Efficiency increase of operational monitoring of technical state of gas-air tract (GAT) of a locomotive diesel, assessment of possibility of using locomotive regular measuring tools to monitor diesel GAT technical state; feasibility justification for expanding the list of GAT parameters that are monitored by locomotive board diagnostics. Methods: An intelligent classifier based on Support Vector Machine (SVM) algorithm is used to determine the current technical condition (TC) class of GAT. Training sample of 96 item volume for eight classes of GAT TC was formed using “Diesel-RK” software complex. Classifier structure three variants were studied, differing in the set of input parameter vector components: regular, with two inputs (pressure increase degree in a supercharger and exhaust gas temperature before a turbine), expanded, with additional control of turbocharger rotor rotation speed, and proposed, with control of air instantaneous consumption by a diesel instead. Model quality was assessed by cross-validation on five fragments and by classification results for test sample which wasn’t used while training. Results: Classification accuracy of testing sample by classifier with input parameter regular set doesn’t exceed 41%. The expansion of being controlled list of parameter on account of inclusion therein of turbocharger rotor rotation speed does not noticeably affect diagnostic system efficiency, increasing diagnostic accuracy only till 43%. At the same time, rotor rotation speed replacement with air instantaneous consumption rises testing sample classification accuracy till 91%. Practical significance: The effectiveness of the use of machine learning methods for operative monitoring of diesel GAT technical state at condition of optimization of the list of diesel parameters, controlled by locomotive board diagnostics tools, is confirmed. With the purpose to increase control efficiency it is recommended to include diesel instantaneous air consumption into the list with parallel exclusion from their of a turbocharger rotor rotation frequency.
16
Kinikar, Hemant A., A. B. Kanase Patil, S. S. Thipse, and Tushar A. Jadhav. "PCCI-DI Combustion Simulation for Significant Reduction of NOX and PM for GENSET Engine." International Journal of Membrane Science and Technology 10, no. 2 (2023): 306–16. http://dx.doi.org/10.15379/ijmst.v10i2.1200.
Full textAbstract:
Improvements in engine combustion are required due to the stringent pollution norms. This can be achieved either by making improvements in the combustion or by equipping after-treatment devices to control engine emission levels. PCCI is one of the popular techniques used to enhance the combustion. In this work, Diesel-RK software is used for the simulation. The main and pre-injection timings are altered to give the benefits in power and emissions. Based on a literature survey, the fourth and fifth modes are finalized for PCCI combustion simulation. The amount of total fuel injected was kept the same to compare the performances in DI and PCCI modes. The simulation results show the reduction in soot (PM) and NOx simultaneously with the help of PCCI concept at lower BMEP levels. The results show a decrease in PM by up to 26%, a reduction in NOx by up to 30% and an increase in power by 2%.
17
J., A. Larrea Ordoñez, C. Prince Avelino J., Díaz Gonzalez M., E. Ovando Chacón G., and Rodríguez León A. "Análisis y modelado de motores de combustión interna utilizando mezclas de combustibles fósiles con biocombustibles." Journal CIM Revista Digital 8, Num.1 (2020): 1253–60. https://doi.org/10.5281/zenodo.6527804.
Full textAbstract:
En este trabajo se estudia tres tipos de motores de combustión interna, SI (Spark Ignition), CI (Compression Ignition) y HCCI (Homogeneous Charge Compression Ignition): su rendimiento termodinámico asociado a una menor generación de contaminantes, así como su modelado y simulación con mezclas de combustibles fósiles (gasolina o diésel) con biocombustibles (metanol, etanol o dimetil éter). Uno de los objetivos de esta investigación radica en comparar el rendimiento y las emisiones contaminantes de cada motor usando su correspondiente combustible fósil con las mezclas anteriormente mencionadas, así como mostrar la aplicación del software Diesel-RK para simular motores de combustión interna. Los resultados de las simulaciones muestran que el uso de biocombustibles no afecta el rendimiento termodinámico, sin embargo, reduce las emisiones contaminantes en la mayoría de las simulaciones.
18
Nhad K. Frhan Al-Abboodi. "The Combined Effect of the Piston Bowl Geometry and Injection Fuel Pressure on the Compression Ignition Engine Characteristics." CFD Letters 14, no. 8 (2022): 43–62. http://dx.doi.org/10.37934/cfdl.14.8.4362.
Full textAbstract:
In this study, the combined effect of the piston bowl geometry and fuel injection pressures on combustion, performance and emission characteristics of compression ignition (CI) engine fueled with baseline Diesel (D100) and microalgae-biodiesel (MA100) was studied. In this paper, the comparison study for the two different piston bowl geometry, namely: hemispherical combustion chamber (HCC) and toroidal re-entrant combustion chamber (TRCC), was carried out with the various fuel injection pressures (200-240 bar) performed. A single-cylinder, direct injection, and four strokes were chosen to simulate the compression ignition (CI) engine by developing a zero-dimensional simulation model using Diesel-RK commercial software. The data was validated by comparing the results against experimental data, which showed that the results obtained from the numerical simulation were in good agreement with the experimental results. MPRR, EGT, HRR, BTE, and NOx exhibited an increase with increased fuel injection pressure, while an inverse trend was observed with ID, CO, and HC. When using MA100 biodiesel with HCC piston bowl geometry at fuel injection pressure (200 bar), the maximum predicted brake specific fuel consumption (BSFC) was 0.545 kg/kWh. A significant reduction of nitrogen (NOx) oxides emissions was also observed with low fuel injection pressures. In contrast, the emission characteristics such as hydrocarbons and CO were enhanced by increasing fuel injection pressure and modifying the piston bowl geometry.
19
MOHSEN, Maysaa J., and Mohamed F. AL-DAWODY. "EFFECT OF USING LPG OF DIESEL ENGINE: A REVIEW." Periódico Tchê Química 19, no. 41 (2022): 48–62. http://dx.doi.org/10.52571/ptq.v19.n41.2022.05_mohsen_pgs_48_62.pdf.
Full textAbstract:
Background: The depletion of petroleum resources and strict environmental concerns have sparked researchers to focus on searching for alternative energy sources for conventional petroleum fuels. These issues call for increasing awareness of effectively using the present reserves and turning to the use of alternative fuels. One of the solutions to achieving this is using gaseous fuels in addition to diesel fuel in diesel engines, such as hydrogen, liquefied petroleum gas (LPG), and natural gas. LPG dual-fuel engines are diesel engines modified to use LPG as the primary fuel and diesel as the secondary fuel. Aim: This study aimed to review the impact of inducting LPG through the intake manifold and directly into the combustion chamber on the combustion, performance, and emission parameters of diesel engines. Methods: This study presents a systematic review of the literature in which scientific articles were used as bibliographic sources. The selection of articles was carried out through a search in different databases. All articles found from the year 2001 to 2021 were initially selected. The following keywords were used diesel, liquefied petroleum gas, gas-powered diesel engines, and technologies. Terms were searched separately. The search strategy used to search the databases was based on the use of the following descriptors and keywords: (“diesel” AND “liquefied petroleum gas”) OR (“gas-powered diesel engines” AND “technologies”). As an exclusion criterion, all articles that did not approach LPG as the gaseous fuel in the dual-fuel engine were excluded from the work. After this survey, the total number of references used in this study was 66 articles. Results and Discussion: the results have shown that the qualities can be improved by using the techniques and concepts that have been developed. The engine and its component elements and the gas system were put through their paces in a laboratory setting. Other tests were conducted using theoretical analysis software like diesel RK. Combustion may occur either when the gas is introduced directly into the combustion chamber or when it is introduced indirectly via the air manifold and mixed with air. Conclusions: Using LPG in the CI engine improves mixing and combustion, lowers fuel consumption, and enhances emission characteristics while lowering costs. When LPG is put into an engine, the engine's performance dramatically improves. Gaseous LPG is injected into the combustion chamber to create a lean, uniform air-LPG mixture. Due to this consistent mixture, NOx emissions are drastically reduced. Increasing the temperature of the intake charge improves the thermal brake efficiency and reduces emissions of HC and CO.
20
ИНШАКОВ, А. П., И. А. УСПЕНСКИЙ, С. В. ТИМОХИН, И. И. КУРБАКОВ, and М. С. КУРБАКОВА. "IMPROVEMENT OF METHODS AND MEANS OF TESTING AGRICULTURAL TRACTOR ENGINES." VESTNIK RIAZANSKOGO GOSUDARSTVENNOGO AGROTEHNOLOGICHESKOGO UNIVERSITETA IM P A KOSTYCHEVA, no. 4(48) (December 29, 2020): 98–107. http://dx.doi.org/10.36508/rsatu.2020.48.4.014.
Full textAbstract:
Проблема и цель. В настоящее время работы по разработке новых и модернизации выпускаемых дизелей не представляются возможными без проведения лабораторных испытаний, в ходе которых на стендах получают различные характеристики двигателей, проводят настройку и оптимизацию систем ДВС. В этой связи исследования, направленные на повышение эффективности испытания ДВС путем совершенствования методов и средств испытания, использования ПК и современных программных комплексов, являются несомненно актуальными. Таким образом, целью исследования является совершенствование методов и средств испытания тракторных двигателей. Задачами данного исследования является разработка эффективной методики и средств для испытания ДВС, моделирования его характеристик в программных комплексах и его апробация с представлением результатов экспериментальных исследований. Методология. Для выполнения задач исследования была проведена модернизация стенда КИ-5543 ГОСНИТИ, которая позволила расширить его функциональные возможности добавлением функции регистрации быстро протекающих процессов в ходе испытания как в режиме холостого хода, так и в режиме нагружения. Использование АЦП, программного комплекса Power Graph в составе стенда позволяет получать характеристики ДВС в зависимости от различных аргументов, в частности, от оборотов ДВС. Для целей моделирования была использована программа «ДИЗЕЛЬ-РК», предназначенная для расчета и оптимизации двухтактных и четырехтактных двигателей внутреннего сгорания. Результаты. С целью определения эффективности предложенных методов и средств, применимых для испытания двигателей внутреннего сгорания, в данном исследовании был проведен ряд опытов. В результате были получены характеристики переходных процессов ДВС, решены оптимизационные задачи и смоделированы характеристики ДВС в программе «ДИЗЕЛЬ РК». Заключение. Таким образом, в ходе выполнения исследований был представлен современный комплекс, позволяющий на высоком уровне проводить научные исследования и испытания автотракторных двигателей внутреннего сгорания Problem and purpose. Currently, work on the development of new and modernization of manufactured diesel engines is not possible without conducting laboratory tests, during which various engine characteristics are obtained on stands, and internal combustion engine systems are confgured and optimized. In this regard, research aimed at improving the efciency of internal combustion engine testing by improving testing methods and tools, using PCs and modern software systems, is undoubtedly relevant. Thus, the purpose of the study is to improve methods and means of testing tractor engines. The objectives of this study are to develop an efective methodology and tools for testing the internal combustion engine, modeling its characteristics in software systems, and testing it with the presentation of the results of experimental studies.Methodology. To perform the research tasks, GOSNITI Ki-5543 stand was upgraded, which allowed expanding its functionality by adding the function of registering fast-moving processes during the test both in idle mode and in loading mode. Using ADC and Power Graph software package as a part of the stand allows to get characteristics of the internal combustion engine depending on various arguments, in particular, on the engine speed. For modeling purposes, program "DIESEL-RK" was used, designed for calculating and optimizing twostroke and four-stroke internal combustion engines. Results. In order to determine the efciency of the proposed methods and tools used for testing internal combustion engines, a number of experiments were conducted in this study. In the result, the characteristics of the transients of the internal combustion engine solved the optimization problem and the simulated characteristics of the engine in DIESEL RK program. Conclusion. Thus, in the course of the research, a modern complex was presented allowing high-level research and testing of automotive internal combustion engines.
21
Ramuhaheli, Shumani, Vasudevarao Veeredhi, and Christopher Enweremadu. "The Performance and Emission Characteristics Assessment of Hybrid Biodiesel/Ethanol Blends in a Diesel Engine." Environmental and Climate Technologies 26, no. 1 (2022): 670–83. http://dx.doi.org/10.2478/rtuect-2022-0051.
Full textAbstract:
Abstract In this study, a biodiesel blend was developed from the waste cooking oil methyl ester (WCOME) and soya bean oil methyl ester (SBME), namely, the optimum blend of WCOME-SBME (BM100) biodiesel. This biodiesel-biodiesel mixture (hybrid biodiesel) was in turn blended with 15 % of ethanol to give a biodiesel mixture-ethanol blend (BME15). The biodiesel-biodiesel mixture has a better density than the individual biodiesels, SBME had lower viscosity compared to BM100 and WCOME. The presence of ethanol in the hybrid biodiesel blend reduced both kinematic viscosity and the high density of the blend. BM100 also exhibited a better heating value compared to the individual biodiesels. Engine performance and emissions were tested using diesel (D100), WCOME, SBME, BM100, and BME15, and experimental results obtained compared with predicted using Diesel-RK software. The results indicated that at the maximum speed of 2500 rpm, BM100 performed better in terms of brake power (BP), brake thermal efficiency (BTE), brake specific fuel consumption (BSFC), and brake mean effective pressure compared to the individual biodiesels (WCOME and SBME) but marginally poorer to D100. The BTE of BME15 is comparable to BM100. On the other hand, BME15 exhibited better emission characteristics having the lowest NO, particulate matter (PM), and hydrocarbon (HC) emissions compared to D100, WCOME, SBME, and BM100. Overall, when both engine performance and emission are considered BM100 increased engine performance compared to WCOME and SBME while BME15 is more effective in decreasing NO, PM, and HC emissions.
22
Al-Abboodi, Nhad K. Frhan, Amina Hmoud Alikhan, and Hadi O. Mery. "Numerical investigation of Fuel Fraction and Dwell Time in Compression Ignition Engines Using Diesel-Biodiesel Blends." Journal of Advanced Research in Numerical Heat Transfer 36, no. 1 (2025): 107–36. https://doi.org/10.37934/arnht.36.1.107136.
Full textAbstract:
Homogeneous charge compression ignition (HCCI) engines offer an advanced combustion strategy to enhance thermal efficiency and reduce emissions. However, challenges remain in achieving mixture homogeneity and controlling the combustion phase. A split injection strategy, utilizing reactive control compression techniques, enhances the combustion process in HCCI engines. This paper focused on investigation of two key parameters; (i) dwell timing and fuel fraction in the second injection pulse and (ii) their effects on combustion, performance, and emissions characteristics across various diesel-biodiesel blend proportions in a direct injection diesel engine (DIDE). The study employed the Diesel-RK software to simulate compression ignition engine performance, providing a reliable numerical model for evaluating fuel operation under different conditions. In the split injection strategy, the first pulse injection timing was fixed at 40° CA BTDC, while the dwell time between the first and second pulses varied at 5°, 10°, 15°, 20°, and 25° CA respectively. Additionally, the fuel fraction in the second pulse was adjusted to 90%, 80%, 70%, and 60%, with the remaining fuel injected during the first pulse. The investigation also considered the effects of four fuel compositions: B0, B20, B40, and B100. The results demonstrated that the proposed methodology significantly influences compression ignition engine characteristics. Increasing the dwell time to 25° CA resulted in reductions of 14.4% in ICP, 6.3% in ICT, 9.1% in HRR, 5.7% in SFC, 10.6% in NOx, and 9.4% in CO₂ compared to 5° CA. Furthermore, NOx emissions were minimized by increasing dwell times and reducing the fuel fraction in the second pulse. The study also found that increasing the fuel fraction in the second pulse slightly increased ICP, ICT, HRR, and NOx, while SFC, ID, and CO₂ decreased. The second injection pulse lacked sufficient time for proper mixing with the charged air, influencing combustion efficiency. This paper suggests optimizing dwell time and fuel fraction in split injection strategies to enhance combustion efficiency and emissions control in diesel-biodiesel blends. The dwell time and fuel fraction adjustments play a crucial role in improving the performance and sustainability of DIDE.
23
Gumus, Emrah, and Murat Otkur. "Design of an Optimum Compact EGR Cooler in a Heavy-Duty Diesel Engine towards Meeting Euro 7 Emission Regulations." Sustainability 15, no. 16 (2023): 12361. http://dx.doi.org/10.3390/su151612361.
Full textAbstract:
Exhaust gas recirculation (EGR) has been an efficient emission treatment strategy employed in internal combustion engines (ICEs) to cope with NOx emission limits since the introduction of Euro 4 regulations for heavy-duty commercial vehicles. A portion of the exhaust gas is fed back into the intake port, replacing O2 in the fresh air with inert CO2 from the exhaust gas, resulting in a reduction in the combustion temperature and, hence, a reduction in NOx emissions. Considering the high exhaust temperature, this process increases the charge mixture temperature and degrades the volumetric efficiency of the engine. EGR coolers have been introduced as vital parts of EGR exhaust treatment systems with the aim of reducing the intake port temperature to increase volumetric efficiency and further reduce combustion temperatures. EGR coolers are heat exchangers (HXs) that generally employ engine coolant to reduce the EGR temperature with effectiveness values around 0.7~0.85 and downgrade with engine usage owing to soot deposition. Increasing the effectiveness of the EGR cooler has a positive effect on engine volumetric efficiency and reduces NOx, particulate matter (PM), and fuel consumption. The current study involved the design of a microchannel HX for a 500 PS heavy-duty Euro 6 diesel engine EGR cooler. The mechanical and thermal-hydraulic design calculations of the proposed HX were performed using Mathematica software. The optimum HX dimensions for the required boundary conditions were determined, and the performance of the EGR cooler was analyzed for the current and proposed options. Furthermore, Diesel-RK software was used to model the engine performance with NOx, PM, CO2 emissions, and fuel consumption predictions. The results show that the newly proposed microchannel HX design improves NOx, PM, and specific fuel consumption by 6.75%, 11.30%, and 0.65%, respectively.
24
Philip, Adebayo, and Fasogbon Samson. "Numerical Analysis of Combustion and Performance Characteristics of a Compression Ignition Engine Fuelled with Orange Peel Oil Based Biodiesel and its Blends under Varying Compression Ratio." European Journal of Advances in Engineering and Technology 6, no. 3 (2019): 12–24. https://doi.org/10.5281/zenodo.10687322.
Full textAbstract:
<strong>ABSTRACT</strong> Fuel efficiency has been found to be affected by compression ratio in internal combustion engines. Information is however scanty on its effect on combustion and performance characteristics of Internal Combustion (IC) engines. This work therefore investigated combustion variables such as cylinder pressure, heat release fraction, ignition delay and heat transfer and performance characteristics such as brake power, volumetric efficiency and Brake Specific Fuel Consumption (BSFC) in compression ignition engine fuelled with orange peel oil based biodiesel and its blends under variable compression ratio. The research employed the use of Diesel-RK software in investigating the performance and combustion characteristics of a four stroke, single cylinder, water cooled, direct ignition, compression ignition engine fuelled with orange peel oil based biodiesel and its blends (B10, B20, B30, B40, B50, B60, B70, B80, B90) under varying compression ratios of 16, 17 and 18 at varying engine speed of 1500 rpm to 3500rpm. The result showed appreciable increase in cylinder pressure, heat release rate, brake power for orange peel oil based biodiesel and its blends at higher compression ratio and decrease in brake specific fuel consumption, ignition delay and volumetric efficiency. Consequently, it was concluded that orange peel oil based biodiesel and its blend could have better combustion and performance characteristics at higher compression ratio.
25
Meherzi, Radhouane, Chokri Boubahri, Darcy Odounga Lendoye, Amal Elleuch, and Jamel Bessrour. "Numerical simulation of the effect of adding oxygenated fuel (ethanol) to commercial gasoline on engine performance and NOx emissions." International Journal of Low-Carbon Technologies 20 (2025): 1001–11. https://doi.org/10.1093/ijlct/ctae065.
Full textAbstract:
Abstract Spark-ignition engines are still widely used in the transport sector. With the price of oil continuing to rise and fossil fuel reserves dwindling, the appeal of renewable alternative fuels is felt. It is therefore with a view to verifying the influence of the integration of different oxygenated fuels in petrol on engine performance and pollutant emissions that this experimental and numerical research was conducted. Ethanol, which is an oxygenated fuel, has been tested in blends with unleaded commercial gasoline at concentrations of 10%, 20%, 30% and 40% in a spark-ignition engine. Little variation was diagnosed in the stability of combustion. It was also observed that the addition of oxygenated fuels led to a significant decrease in NOx emissions of 7.5% for E10 (10% ethanol + 90% unleaded commercial gasoline) with the maintenance of engine performance (torque and power). This is probably due to a lower combustion temperature. A numerical study confirmed the experimental data for performance, torque and power. However, the multi-resource DIESEL RK software used for this study was developed to account for the effect of the chemical composition of a given fuel on its ability to form NOx emissions, particularly in the case of ethanol. To do this, the numerical study confirmed the experimental trends for E10, E20, E30 and E40 with a mean divergence value ranging from 0.48% to 5.07%.
26
Elshenawy, Ahmed Abdelrazik, Sayed M. Abdel Razik, and M. S. Gad. "Modeling of combustion and emissions behavior on the effect of ethanol–gasoline blends in a four stroke SI engine." Advances in Mechanical Engineering 15, no. 3 (2023): 168781322311571. http://dx.doi.org/10.1177/16878132231157178.
Full textAbstract:
Researchers are increasingly coming up with creative solutions to reduce fuel consumption and harmful emissions due to the political unrest around crude oil and harsher environmental legislation around the globe. Using gasoline and ethanol blends as substitutes in SI engines is thought to be a promising approach. To lower the cost of experimental test, it is still necessary to provide a model to explore the emissions, performance and combustion of ethanol mixtures in petrol engine under various operating situations. A comprehensive quasi dimensional two zone model was used. This mathematical model could predict and analyze the engine combustion, emissions and performance parameters using MATLAB. The thermal efficiency was improved for E20 by 3%. Ethanol addition decreased SFC value by average 7.2% for E20 with respect to gasoline. In comparison to gasoline, the increases in output power were 1.1%, 3%, 4%, and 5.5% are obtained with E5, E10, E15, and E20. and 45% The highest increases in peak cylinder pressure and cylinder temperature for E20 about gasoline are 14 and 11%, respectively about gasoline. At 2500 rpm, the greatest percentage declines in NOx, CO, and HC emissions for E20 are 3.3, 23.5 and 45% about gasoline. The results of comparing the mathematical model’s validity to those acquired from experimental data and diesel RK software demonstrate that the MATLAB code is appropriate. The mathematical model proved that ethanol blending can be used up to 20% as alternative fuels to improve the gasoline engine performance, combustion and emissions.
27
POLAT, Fikret. "Investigation of the effect of compression ratio on the emission and performance characteristics of diesel engines with using Diesel RK software." Gümüşhane Üniversitesi Fen Bilimleri Enstitüsü Dergisi, May 23, 2022. http://dx.doi.org/10.17714/gumusfenbil.1008024.
Full textAbstract:
The main purpose of this study is to observe the effects of compression ratio (CR) on the performance and emission characteristics of a single-cylinder diesel engine operating with fuels obtained by adding methanol and Al2O3 nanoparticles to diesel fuel. For this purpose, Diesel RK software was used and a simulation model was created. The simulation model created was verified with the previous experimental study and a maximum error of 6.5% was obtained. After the model was validated, analyses were performed at different compression ratios as 16.5, 17.5 and 18.5. Analyses were carried out at 1500 rpm constant engine speed and full load. In the results, it was observed that the brake specific fuel consumption (BSFC) and NOx values increased as the compression ratio increased for all test fuels. The minimum BSFC value was obtained in diesel fuel as 219 g/kWh at a compression ratio of 16.5. The minimum NOx value was obtained in M15A100 (test fuel obtained by adding 100 ppm Aluminium oxide nanoparticles to the test fuel called M15, which consists of 15% methanol, 85% diesel fuel by volume) fuel as 651 ppm at a compression ratio of 16.5.
28
Ramuhaheli, Shumani, and Christopher Enweremadu. "Performance, combustion, and emission features of a diesel engine powered by biodiesel mixture and butanol blends." Journal of Renewable Energies 27, no. 1 (2024). http://dx.doi.org/10.54966/jreen.v27i1.1152.
Full textAbstract:
The search for permanent fossil fuel substitutes has become critical due to the declining supply of fossil fuels and the toxic pollution emitted by diesel engines. In this study, diesel engine characteristics have been investigated numerically and experimentally using diesel, biodiesel mixture from waste vegetable oil and soybean oil (BM100) and butanol blends (5%, 10%, and 15%). The experimental work was conducted on the single-cylinder diesel engine generator at different speeds (1000, 1500, 2000, and 2500 rpm) and full load conditions. A commercial Diesel-RK software was used to perform the numerical aspects of the diesel engine. The different percentages of butanol blends were added to biodiesel mixture to form biodiesel mixture-butanol blends. It was discovered that there was good agreement between the experimental and numerical results. The cylinder pressure, heat release rate, brake power, brake-specific fuel consumption, brake thermal efficiency, nitrogen oxide, carbon dioxide, and particulate matter (PM) emissions were all predicted using the numerical technique. Results showed a decrease in carbon dioxide, particulate matter, and brake power. When compared to regular diesel fuel, at maximum speed, there was a decrease in brake-specific fuel consumption and an increase in nitrogen oxide emissions.
29
Sinha, Indranil, Ambarish Datta, and Bijan Kumar Mandal. "Numerical Investigation on Energetic, Combustion and Emissions Parameters of a Diesel Engine Fueled with Diesel/Butanol and Diesel/Pentanol." Journal of Thermal Science and Engineering Applications, May 8, 2024, 1–40. http://dx.doi.org/10.1115/1.4065489.
Full textAbstract:
Abstract In this article, the effect of butanol/diesel and pentanol/diesel blended fuel with different proportions on the energetic, combustion, and emissions parameters of a diesel engine was studied. Firstly, an engine model was established using diesel-RK software. The modeled engine was a direct injection diesel engine having a fixed compression ratio, injection timing, and speed of 17.5:1, 23°bTDC, and 1500 rpm respectively. After that, a set of experiments was conducted using a 5% pentanol and 95% diesel by volume fuel blend maintaining the same operating conditions as the simulation, and the results of the experiment were compared with the numerical result using the same blend. The simulated results were found to be in respectable agreement with experimental findings. The analysis of the simulated results shows that at 100% load using 15% butanol and 85% diesel by volume and 15% pentanol and 85% diesel by volume brake thermal efficiency was increased by 0.96% and 0.8% respectively. The emission of NOx was reduced by 24.4% and 10.75% on average using butanol and pentanol blends respectively. The instantaneous heat release rate and ignition delay increase with the higher alcohol-diesel blends, whereas the peak pressure rise and combustion temperature decrease. Smoke emissions were reduced by 3.31-8.75% and specific particulate matter emissions decreased by 20.9 % and 15.07 % respectively on average with the addition of butanol/pentanol in neat diesel.
30
Verma, Tikendra Nath, Prem Kumar Chaurasiya, Upendra Rajak, Krishnakant Dhakar, and Leeladhar Nagdeve. "A Numerical Study on the Effect of Engine Characteristics by Using Ethanol-moringa-diesel Fuel." Journal of Engineering Research, August 20, 2021. http://dx.doi.org/10.36909/jer.emsme.13857.
Full textAbstract:
Environmental contamination has been increasing day by day due to increase in use of fossil fuel, therefore world is moving towards unconventional sources of energy generation. In this study, a diesel engine characteristic was analysed in a single cylinder, four strokes, water cooled, direction injection (DI) diesel engine by using two different fuel blends, one is non-edible oil (Moringa oleifera) and another one is alcohol (Ethanol) and operating at different engine load. Diesel engine characteristics were examined in terms of engine performance, emission and combustion characteristics by using Diesel-RK software and before that validate the numerical result with experimental result. The result shows that MB20 has reduction of 2.26%, 7.37%, 2.6%, 8.3% and 15.02% in BTE, EGT, Smoke emission, MRPR and NOX respectively and increases 8.9% and 12.34% in SFC and CO2 emission. The MBE20 has increased by 2.9% and 18.75% in SFC and CO2 emissions and decrease of 1.25%, 2.45, 5.44%, and 3.06% in BTE, EGT, MRPR and NOX respectively was found as compare to diesel fuel. In this paper, mixing various blends 20% of Moringa Oleifera biodiesel fuel with 20% of ethanol gives optimum blends ratio.
31
Puzdrowska, Patrycja. "Diagnosis of marine internal combustion engines by means of rapidly variable temperature and composition of exhaust gas as an alternative or support for currently used diagnostic methods." Combustion Engines, October 25, 2024. http://dx.doi.org/10.19206/ce-193951.
Full textAbstract:
The article points out relevance of parametric diagnostics of ship engines and analyzes the state of research in this field. A method is proposed for diagnosing engine systems on the basis of rapidly variable exhaust temperature while measuring its composition. A method for determining diagnoser tools from the signal within one engine cycle and mathematical and statistical treatment of test results is presented. The products of numerical moddeling in the Diesel-RK software and the products of laboratory research on a Farymann Diesel test engine were analyzed. Affect of the most popular defects on the analyzed parameters was defined. Criteria for matching a diagnoser tool in accordance with the type of damage in a ship engine was presented. A methodology was proposed for adapting the presented method to metering on a ship engine in operation.
32
Al-Dawody, Mohamed F., Khaled A. Al-Farhany, Naseer H. Hamza, and Dhafer A. Hamzah. "Numerical study for the spray characteristics of diesel engine powered by biodiesel fuels under different injection pressures." Journal of Engineering Research, September 23, 2021. http://dx.doi.org/10.36909/jer.9821.
Full textAbstract:
Great attention is directed towards the study of the spray phenomena theoretically and experimentally due to its dramatic effect on the combustion process that occurred in an internal combustion engine, in particular, the diesel engine. The spray macroscopic characteristic of diesel engines fueled with two different biodiesel fuels in addition to nominal diesel under various injection pressures has been investigated numerically in this work. The selected biofuels are Rapeseed methyl ester (RME), Waste cooking oil methyl ester (WCOME). The Russian simulation software Diesel-RK is used in this work. Four different injection pressures are used which are 200, 500, 800 and 1000 bar respectively. It is found that RME has higher spray penetration with a narrow spray angle due to high viscosity and large momentum compared to diesel fuel. The results reported that biodiesels have greater Sauter mean diameter (SMD) compared to pure diesel because of their higher viscosity and surface tension. Promising reduction in SMD comes with WCOME as the injection pressure increases. Cylinder pressure along with heat release is reduced in the case of biodiesel due to the reduction in heating values. The lowest ability to produce smoke is recorded for WCOME where 93% reduction is achieved followed by a 57% reduction for RME as compared to diesel. The obtained results are compared with the results of other researcher and the convergence between them is observed.
33
Polat, Fikret. "Performance and emission behaviors of a CI engine fueled by waste feedstocks at varying compression ratios." Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering, February 7, 2022, 095440892210748. http://dx.doi.org/10.1177/09544089221074845.
Full textAbstract:
The main objective of this study is to observe the effects of compression ratio (CR) variation on the engine performance and exhaust emission characteristics of a single-cylinder diesel engine fueled by waste fusel oil (F), waste cooking oil biodiesel (BD), and waste tire pyrolysis oil (P). For this purpose, Diesel RK software was used and the analyzes were performed at varying CRs of 18.3, 20.3, and 22.3. Analyzes were carried out at 2400 rpm constant engine speed, and varying engine loads (3, 6, 9, and 12 Nm). In the results, it is noticed that as the CR increased, BSFC (Brake Specific Fuel Consumption) value also increased for all test fuels. However, at low loads (3 and 6 Nm), the BSFC value decreased as the compression ratio increased after CR20.3. While the maximum BSFC value was obtained to be 560.55 g/kWh for P20 fuel at 3 Nm for CR20.3, the minimum one was achieved to be 46.76 g/kWh for neat diesel fuel at 12 Nm for 18.3. As the CR increased, the BTE (Brake thermal efficiency) value decreased for all test fuels at nearly all loads. However, at low loads (3 and 6 Nm), it is observed that the BTE improved as the CR increased after CR20.3. While maximum BTE was calculated to be 32.07% for P10F10 fuel at CR18.3 compression ratio at 12 Nm load, minimum one was achieved to be 15.36% for P20 at 3 Nm load for CR20.3. In addition, the NOx increased at all loads as CR increased for all test fuels. The maximum NOx value for P20 was recorded to be 1300 ppm at 12 Nm load and CR22.3. A minimum NOx was detected as 144. 56 ppm for P10F10 at 3 Nm, and CR18.3. In conclusion, the paper has proved that the experimental results are well-fitting with those of simulation software.
34
Elshenawy, Ahmed Abdelrazik, Sayed M. Abdel Razik, and MS Gad. "Numerical investigation of performance, combustion, and emission characteristics of spark-ignition engine fuelled with compressed natural gas and hydrogen." Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering, November 13, 2023. http://dx.doi.org/10.1177/09544089231208914.
Full textAbstract:
The combustion of gasoline engines running on blends of compressed natural gas and hydrogen fuels was investigated using the quasi-dimensional and two-zone model. This model could investigate and predict the combustion characteristics, emissions, and performance parameters of petrol engines using MATLAB software. The impact of hydrogen inclusion to compressed natural gas on the cylinder temperature, pressure, cumulative work done, and heat transfer related to compressed natural gas was investigated. The engine’s thermal efficiency and output power were increased while specific fuel consumption was decreased when hydrogen was blended up to 20%. The highest decline in specific fuel consumption of 20% hydrogen was 25.1% for compressed natural gas. The torque values are 4.25, 4.34, 4.42, 4.51, and 4.60 N·m for compressed natural gas, hydrogen with compressed natural gas HCNG 5%, HCNG 10%, HCNG 15%, and HCNG 20%, respectively, at rated speed of 2500 r/min. The peak decreases in peak cylinder temperature and pressure for HCNG 20% compared to compressed natural gas are 5.9% and 5.2%, respectively. For HCNG 20%, the greatest cylinder pressure, temperature, and cumulative work done were 7.9 MPa, 2309.97 K, and 190.88 J, respectively. NO x emissions were increased for hydrogen-compressed natural gas blends but hydrocarbon emissions were decreased. In comparison to compressed natural gas, the highest hydrocarbon emission reduction is up to 2.64% for HCNG 20%. The model's validity was examined in comparison to the findings from the literature and the Diesel RK program. The results show that the MATLAB code is appropriate. Several alternative fuels can be used using this mathematical model.