Journal articles: 'Engine system'

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Pourdarbani, Razieh, and Ramin Aminfar. "Theoretical study to determine the proper injection system for upgrading fuel system of diesel engine om357 to common rail system." International Journal of Engineering & Technology 7, no. 4 (September 24, 2018): 2594. http://dx.doi.org/10.14419/ijet.v7i4.17364.

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In this research, we tried to investigate all the fuel injection systems of diesel engines in order to select the most suitable fuel injection system for the OM357 diesel engine to achieve the highest efficiency, maximize output torque and reduce emissions and even reduce fuel consumption. The prevailing strategy for this study was to investigate the effect of injection pressure changes, injection timing and multi-stage injection. By comparing the engines equipped with common rail injection system, the proposed injector for engine OM357 is solenoid, due to the cost of this type of injector, MAP and controller (ECU). It is clear that this will not be possible only with the optimization of the injection system, and so other systems that influence engine performance such as the engine's respiratory system and combustion chamber shape, etc. should also be optimized.

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GĘCA, Michał, Zbigniew CZYŻ, and Mariusz SUŁEK. "Diesel engine for aircraft propulsion system." Combustion Engines 169, no. 2 (May 1, 2017): 7–13. http://dx.doi.org/10.19206/ce-2017-202.

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Stricter requirements for power in engines and difficulties in fueling gasoline engines at the airport make aircraft engine manufac-turers design new engines capable of combusting fuel derived from JET-A1. New materials used in compression-ignition engines enable weight reduction, whereas the technologies of a Common Rail system, supercharging and 2-stroke working cycle enable us to increasethe power generated by an engine of a given displacement. The paper discusses the parameters of about 40 types of aircraft compression ignition engines. The parameters of these engines are compared to the spark-ignition Rotax 912 and the turboprop. The paper also shows trends in developing aircraft compression-ignition engines.

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Wierzbicki, Sławomir, Wojciech Kraskowski, and Bronisław Kolator. "Analysis of the Feasibility of Usage of Standalone Controllers for Control of Spark-Ignition Engines." Applied Mechanics and Materials 817 (January 2016): 245–52. http://dx.doi.org/10.4028/www.scientific.net/amm.817.245.

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Modern combustion engines have developed into technologically advanced units that are controlled by complex electronic systems. The controllers of these systems are equipped with built-in control algorithms which allow the engine to achieve optimum engine performance parameters, in compliance with the strict requirements of standards related to the release of toxic fumes to the atmosphere. Unfortunately, this type of engine control system very often makes it difficult to carry out research, or even prevents it, because the change of engine's regulatory parameters is not possible. Currently in most cases research carried out on this type of engine requires the construction of special controllers that allow the user to interfere with the performance of the control system. This article presents the results of tests carried out on an ignition-type engine controlled by a standalone engine.

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Zain, Shukri, and Shaari M. Fazri. "An Investigation of Supercharged Air Filter System on the Performance of a Spark Ignition Engine." Applied Mechanics and Materials 465-466 (December 2013): 443–47. http://dx.doi.org/10.4028/www.scientific.net/amm.465-466.443.

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Considering the enhancement device for air intake systems have been widely available in the market for automotive engines, in this paper, the effect of Supercharged Air Filter (SAF) system on a Spark Ignition (SI) engine were experimentally investigated. Three different types of air filter; standard, conical shape air filter and SAF were tested on a four-stroke single-cylinder engine. The engine was coupled to a 20kW generator dynamometer to measure engine performance parameters; engine torque, engine power (B.P), brake thermal efficiency (BTE), brake specific fuel consumption (BSFC) and brake mean effective pressure (BMEP) at various engine speeds with maximum engine load. The results show that the forced induction system can affect the engine performance but it will make the engines fuel consumption higher than standard system.

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SZRAMA, Sławomir. "F-16 turbofan engine monitoring system." Combustion Engines 177, no. 2 (May 1, 2019): 23–35. http://dx.doi.org/10.19206/ce-2019-205.

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The multirole F-16 is the most advanced aircraft in the Polish Air Forces. It has been equipped with the very modern, sophisticated and advanced turbofan engine F100-PW-229. Due to the fact, that there is only one engine, its reliability, durability, efficiency and performance are the crucial factors for the safety reasons. In the article author researched maintenance system of the F100 turbofan engines, to describe Engine Monitoring System features. Engine Monitoring System (EMS) is the key element in the engine prognostic and health monitoring. The EMS provides engine fault indicators to the pilots and technicians and with the engine performance trending affects the F-16 flight safety risk and enhanced engine maintenance management concept. The main goal of this article was to provide information on the F-16 Engine Monitoring System and its impact on the aircraft airworthiness and F-16 fleet readiness resulting from the engine reliability. It is also an introduction to the F-16 Engine Health Management concept.

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Sugiyama, N. "System Identification of Jet Engines." Journal of Engineering for Gas Turbines and Power 122, no. 1 (October 20, 1999): 19–26. http://dx.doi.org/10.1115/1.483172.

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System identification plays an important role in advanced control systems for jet engines, in which controls are performed adaptively using data from the actual engine and the identified engine. An identification technique for jet engine using the Constant Gain Extended Kalman Filter (CGEKF) is described. The filter is constructed for a two-spool turbofan engine. The CGEKF filter developed here can recognize parameter change in engine components and estimate unmeasurable variables over whole flight conditions. These capabilities are useful for an advanced Full Authority Digital Electric Control (FADEC). Effects of measurement noise and bias, effects of operating point and unpredicted performance change are discussed. Some experimental results using the actual engine are shown to evaluate the effectiveness of CGEKF filter. [S0742-4795(00)00401-4]

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Gettel, L. E., G. C. Perry, J. Boisvert, and P. J. O’Sullivan. "Dual Fuel Engine Control Systems for Transportation Applications." Journal of Engineering for Gas Turbines and Power 109, no. 4 (October 1, 1987): 435–38. http://dx.doi.org/10.1115/1.3240059.

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Microprocessor control systems have been developed for dual fuel diesel engines intended for transportation applications. Control system requirements for transportation engines are more demanding than for stationary engines, as the system must be able to cope with variable speed and load. Detailed fuel maps were determined for both normally aspirated and turbocharged diesel engines based on the criterion that the engine did not operate in the regimes where knock or incomplete combustion occurred. The control system was developed so that the engine would follow the detailed fuel map. The input variables to the control system are engine speed and load. Based on this, the system then controls the amount of natural gas and diesel fuel supplied to the engine. The performance of the system will be briefly summarized.

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Daminov, O., O. Khushnaev, A. Yangibaev, and G. Kucharenok. "IMPROVING THE PERFORMANCE INDICATORS OF DIESEL ENGINES BY ENHANCING THE COOLING SYSTEM." Technical science and innovation 2020, no. 1 (March 31, 2020): 63–68. http://dx.doi.org/10.51346/tstu-01.20.1-77-0052.

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The article deals with the improvement of the performance of diesel engines by improving the cooling system. It is indicated that there is a number of problems that arise when converting an engine with spark ignition to natural gas. The increase of thermal stress of the engine is illustrated. As a result of researching of features of the parameters and characteristics of a gas-powered automobile engine and optimization of its temperature regime, a very actual scientific and practical task is determined. The engine with the spark ignition installed on the microbus working on the diesel and gas is presented. The results of the spark-ignition engine research on gaseous fuel are presented. The following recommendations are given: to analyze the design features of gas engines; analyze the principles of operation of modern engine cooling systems; to conduct a theoretical study of the engine cooling system of gas buses and minibuses, which would allow to identify the causes leading to an increase in the thermal stress of engine parts when converted to gas fuel, which consists in the specificity and features of the working process; suggest ways to improve the cooling system of gas engines; to develop and propose options for improving the cooling system of gas engines, which will reduce the cooling temperature from 120 to 90 °C.

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Min, Sun-Ki. "Study of Engine Oil Jet System Effect on Engine Friction." Journal of the Korea Academia-Industrial cooperation Society 17, no. 6 (June 30, 2016): 687–92. http://dx.doi.org/10.5762/kais.2016.17.6.687.

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Zhao, Jun, Tao Zhang, Jian Xin Su, and Guang Ming Luo. "The Improved Design of Engine Ignition System." Advanced Materials Research 605-607 (December 2012): 1952–58. http://dx.doi.org/10.4028/www.scientific.net/amr.605-607.1952.

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This paper introduces a technical improvement scheme for aviation engine ignition system, due to the reason that existing aircraft engine ignition system uses one machine type and each engine ignition system can not be interchangeable in present situation .It also presents a general ignition circuit structure and fast specialty setting method, both of which have been simulated by Multism software. And the results of simulation show that the airline engine general ignition system can meet the requirements of ignition technology parameters for all engines by setting quickly. The technology has significant influence in improving general use of airline engine spare parts, simplifying the engine maintenance system and increasing the warplanes attendance.

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Ye, Zheng Mao, and Habib Mohamadian. "Simple Engine Exhaust Temperature Modeling and System Identification Based on Markov Chain Monte Carlo." Applied Mechanics and Materials 598 (July 2014): 224–28. http://dx.doi.org/10.4028/www.scientific.net/amm.598.224.

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Even though actual composition of engine exhaust gases varies across diverse types of engines, such as gasoline, diesel, gas turbine and natural gas engines, engine exhaust temperature is always a major factor with strong impact on emission levels and catalytic converting efficiency. For spark ignition engines, exhaust temperature depends on various engine parameters, such as engine speed, engine load, A/F ratio, intake air temperature, coolant temperature and spark timing, etc. Due to complexity, it is impossible to share a unique analytical model of engine exhaust temperature. Instead, it is mostly modeled as a complicated nonlinear system. The model complexity increases significantly however accuracy cannot be guaranteed. On the other hand, a simple linear model with accurate system identification could serve as a versatile alternative to represent the engine exhaust temperature, while engine parameters are subject to model identification to be adaptable across different types of engines. Combination of linear functions in terms of dominant engine parameters of engine speed and engine load is used for exhaust temperature modeling. To identify optimal parameters, Markov Chain Monte Carlo (MCMC) is applied. The discrete-time Markov chain is introduced where the stationary probability replaces posterior density in Monte Carlo integration for numerical integration. Compared with the high order nonlinear approaches, low computation cost is involved in the simplified model. Good agreement between the model prediction data and testing results is observed. The approach could be easily extended to other types of engines.

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Czarnecki, Michal, John Olsen, and Ruixian Ma. "PZL-10 Turboshaft Engine–System Design Review." Journal of KONES 26, no. 1 (March 1, 2019): 23–29. http://dx.doi.org/10.2478/kones-2019-0003.

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Abstract The PZL – 10-turboshaft gas turbine engine is straight derivative of GTD-10 turboshaft design by OKMB (Omsk Engine Design Bureau). Prototype engine first run take place in 1968. Selected engine is interested platform to modify due gas generator layout 6A+R-2, which is modern. For example axial compressor design from successful Klimov designs TB2-117 (10A-2-2) or TB3-117 (12A-2-2) become obsolete in favour to TB7-117B (5A+R-2-2). In comparison to competitive engines: Klimov TB3-117 (1974 – Mi-14/17/24), General Electric T-700 (1970 – UH60/AH64), Turbomeca Makila (1976 – II225M) the PZL-10 engine design is limited by asymmetric power turbine design layout. This layout is common to early turboshaft design such as Soloview D-25V (Mil-6 power plant). Presented article review base engine configuration (6A+R+2+1). Proposed modifications are divided into different variants in terms of design complexity. Simplest variant is limited to increase turbine inlet temperature (TIT) by safe margin. Advanced configuration replace engine layout to 5A+R+2-2 and increase engine compressor pressure ratio to 9.4:1. Upgraded configuration after modification offers increase of generated power by 28% and SFC reduction by 9% – validated by gas turbine performance model. Design proposal corresponds to a major trend of increasing available power for helicopter engines – Mi-8T to Mi-8MT – 46%, H225M – Makila 1A to 1A2 — 9%), Makila 1A2 to Makila 2-25%.

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Popelka, Josef. "Design of System Hydrogen Engine Supercharging." Advanced Materials Research 1016 (August 2014): 607–11. http://dx.doi.org/10.4028/www.scientific.net/amr.1016.607.

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In this paper I am dealing with a general analysis of problems burning of lean hydrogen mixtures in combustion engines. During burning of very lean mixtures burning procedure is over lasted with characteristic features. They need to be removed or reduced. One of these features is low power of engines operating by lean mixtures, which can be partially removed with the help of supercharging such engines. In the second part of the paper I am dealing with a design of supercharging system for a three-cylinder engine with volume 1,2 dm3.

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STELMASIAK, Zdzisław. "Analysis of the influence of gas-air mixture property on the selected parameters dual fuel direct injection diesel engine." Combustion Engines 121, no. 2 (May 1, 2005): 30–45. http://dx.doi.org/10.19206/ce-117404.

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Perspectives of usage natural gas in feeding systems of internal combustion engines and development of electronic control systems have resulted in survived interest in dual fuel system of engine feeding. Compression ignition, dual fuel engine enables to preserve majority of positive features of compression ignition engine and shows many advantageous features comparing with gaseous engine with spark ignition system. The paper shows an impact of gaseous mixture composition on operational parameters of the engine, with special consideration of combustion parameters and toxicity of exhaust gases. It has been confirmed that in range of gaseous mixture composition change in scope of λo = 1.4–6.0 worsening of combustion parameters is negligible and can be accepted for medium size traditional engines. Simultaneously, in spite of implementation of traditional injection system, leaning of the mixture up to λo < 6.0 enables significant change of engine load. Limitation of leaning of the mixture up to λo < 4.5, restricts harmful phenomena connected with combustion of lean gaseous mixtures. It requires, however, fuel injection electronic systems such as common rail. Results presented in the paper can be useful in adaptations of compression ignition engine to gaseous feeding and in stage of development of control systems to such engines.

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Sasayama, T., S. Suzuki, M. Amano, N. Kuribara, S. Sakamoto, and S. Suda. "An Advanced Engine Control System Using Combustion Pressure Sensors." Proceedings of the Institution of Mechanical Engineers, Part D: Transport Engineering 201, no. 1 (January 1987): 55–59. http://dx.doi.org/10.1243/pime_proc_1987_201_157_02.

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While investigating high-efficiency responsive driveability accompanied by low exhaust emissions, a new concept in engine control has been developed. The method is based on the direct monitoring and controlling of combustion conditions in engines, using a newly developed combustion pressure sensor. Fibre-optic technology is adapted to this sensor to produce a high noise immunity and a simple structure that facilitates applications in automotive engines. A sensing method to obtain information on engine output, knocking or detonation and the combustion temperature from the signal of the combustion pressure sensor has been proposed. A control system for the engine and powertrain control using this sensing method has been put forth to provide a remarkable improvement in engine and powertrain characteristics.

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G. Shatrov, Mikhail, Vladimir V. Sinyavski, Andrey Yu. Dunin, Ivan G. Shishlov, Andrey V. Vakulenko, and Andrey L. Yakovenko. "Using Simulation for Development of The Systems of Automobile Gas Diesel Engine and its Operation Control." International Journal of Engineering & Technology 7, no. 2.28 (May 16, 2018): 288. http://dx.doi.org/10.14419/ijet.v7i2.28.12947.

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The work was aimed at the development of gas supply, diesel fuel supply and electronic control systems for automobile gas diesel engines. Different ways of diesel engine conversion to operate on natural gas were analyzed. Gas diesel process with minimized ignition portion of diesel fuel injected by the CR system was selected. Electronic engine control and modular gas feed systems which can be used on high- and middle-speed gas diesel engines were developed. Diesel CR fuel supply system was developed in cooperation with the industrial partner. Simulation was used to obtain basic parameters and control methods of these systems. The base diesel engine was converted into gas diesel engine using the systems developed. Bench tests of the gas diesel engine demonstrated a high share of diesel fuel substitution with gas, high fuel efficiency and large decrease of NOх and СО2 emissions.

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Sun, Peiyan, Xiang Li, Changzhong Man, Yunbang Tang, and Yi Wan. "Series valve speed control system: A new type of spark ignition engine speed control system without throttle." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 233, no. 5 (March 27, 2018): 1345–51. http://dx.doi.org/10.1177/0954407018759410.

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Spark ignition engines perform with low power efficiency and low fuel economy for which the throttling loss is the main reason. This paper introduces a new kind of intake control system-series valve speed control system that consists of two intake valves connected in series. It is operated without throttle to reduce the engine intake loss and thereby improve fuel economy under medium- and low-load working conditions. Through experiments, we confirm that compared with the basal spark ignition engine, the spark ignition engine with series valve speed control system can reduce fuel consumption, and the maximum fuel consumption rate can be increased up to 12% at the engine speed of 3000 r/min.

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Autar, R. K. "An Automated Diagnostic Expert System for Diesel Engines." Journal of Engineering for Gas Turbines and Power 118, no. 3 (July 1, 1996): 673–79. http://dx.doi.org/10.1115/1.2816701.

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Fault diagnosis of diesel engines can be a tedious time-consuming process, resulting in extended downtime, thus reducing productivity and increasing operational cost. This problem can be accentuated when experienced expert maintenance personnel are in short supply and also when the rate of development of new-generation engines using leading edge technology does not permit maintenance personnel to keep up with this change. An automated diagnostic system based on artificial intelligence criteria using mechanical signature analyses (MSA) of signals acquired from engine mounted sensors can overcome this problem by providing expert and consistent diagnostic advice. This paper describes the development and implementation of an automated diagnostic expert system for diesel engines. The system uses vibration signals together with oil pressure and temperature, crankcase pressures, exhaust gas temperature and pressure, exhaust emissions, manifold noise levels, inlet manifold pressure, fuel delivery pressure, and instantaneous engine speed to monitor and diagnose engine faults. State-of-the-art techniques used for signal processing to generate data required for effective diagnosis from raw signals acquired form the engine mounted sensors are described. Complexities of signal processing for diesel engines are discussed and solutions of a practical nature suggested. Signal analysis techniques relating to fault condition evaluation are also described.

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Geok Pheng, Liaw, Rosnani Affandi, Mohd Ruddin Ab Ghani, Chin Kim Gan, and Jano Zanariah. "Stirling Engine Technology for Parabolic Dish-Stirling System Based on Concentrating Solar Power (CSP)." Applied Mechanics and Materials 785 (August 2015): 576–80. http://dx.doi.org/10.4028/www.scientific.net/amm.785.576.

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Solar energy is one of the more attractive renewable energy sources that can be used as an input energy source for heat engines. In fact, any heat energy sources can be used with the Stirling engine. Stirling engines are mechanical devices working theoretically on the Stirling cycle, or its modifications, in which compressible fluids, such as air, hydrogen, helium, nitrogen or even vapors, are used as working fluids. When comparing with the internal combustion engine, the Stirling engine offers possibility for having high efficiency engine with less exhaust emissions. However, this paper analyzes the basic background of Stirling engine and reviews its existing literature pertaining to dynamic model and control system for parabolic dish-stirling (PD) system.

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Noh, Kichol, and Changhee Lee. "Development of an Ignition System and Assessment of Engine Performance and Exhaust Characteristics of a Marine Gas Engine." Sustainability 13, no. 8 (April 7, 2021): 4097. http://dx.doi.org/10.3390/su13084097.

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In recent years, marine engine manufacturers have become increasingly interested in gas engines as an alternative to diesel engines to address rising crude oil prices and environmental regulations. In this study, a 1.6 MW dedicated gas engine was developed based on a diesel engine with bore 220, stroke 300. The developed gas engine had a precombustion chamber and exhibited excellent performance; the brake mean effective pressure was 2.1 MPa at 1000 rpm and NOx emissions were 50 ppm under 15% O2. In particular, it demonstrated excellent fuel economy with a thermal efficiency of 45%, and its carbon dioxide emissions were ~75% of the conventional diesel engines, thus demonstrating greenhouse gas reduction. These results indicate that suitably developed gas engines can provide a low-cost and energy-efficient alternative to diesel engines.

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Graze, R. R. "Development and Test of a Fractional Sampling System for Diesel Engine Particulate Measurement." Journal of Engineering for Gas Turbines and Power 116, no. 4 (October 1, 1994): 765–73. http://dx.doi.org/10.1115/1.2906884.

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Diesel engine particulate certification, heretofore limited to on-highway truck engines, will be expanded in scope beginning in 1996. “Mini-dilution” tunnels have been the European and Japanese systems of choice for dilute particulate emissions certification for non-U.S. truck diesel engines. However, repeatability, steady-state test correlation versus full dilution systems, portability, sampling time, size, and system cost have precluded universal industry and regulatory acceptance of existing “mini-system” designs. To address corporate particulate measurement needs, the author developed a device known internally as the “Micro-Dilution Particulate Measurement System,” which meets the following objectives: (1) correlation with full dilution systems within ISO 8178 equivalency standards, (2) short sampling time, (3) reduced setup effort, and (4) excellent portability. Since the system is a true fractional sampler, it is insensitive to engine size, requiring only a simple stack probe change to provide accurate, representative steady-state diesel stack sampling on any size diesel engine.

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Reichert, Joachim, and Peter Schäfer. "Reduced friction in engine sealing system for truck engines." MTZ worldwide 71, no. 4 (April 2010): 30–35. http://dx.doi.org/10.1007/bf03227989.

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Toma, Marius, Cornelia Stan, and Iordan Fileru. "The restriction produced by the air filtration system versus the restriction produced by the air filter." MATEC Web of Conferences 178 (2018): 09002. http://dx.doi.org/10.1051/matecconf/201817809002.

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The air filtration system for an internal combustion engine comprises the air filter, the filter housing and the intake air duct which conducts the air flow from the vehicle grille to the filter housing. This generates gaso-dynamic resistances to the air intake into the engine. The air filter housing and the intake air duct are often mounted in the engine compartment mainly where it fits better and less according to the air flow and noise reduction criteria. The paper aims to show the contribution of the restriction produced by the filter housing and the intake air duct to the total restriction produced by the air filtration system. Several air filtration systems from vehicles fitted with both spark-ignition engines and diesel engines are tested. The results show that the restriction produced by the intake air duct system as well as the air filter housing have a significant contribution to the total restriction produced by the air filtration system of a vehicle engine.

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Pokusaev, Mikhail Nikolaevich, Alexei Viktorovich Trifonov, and Vasiliy Aleksandrovich Kostyrenko. "TESTING PLANT FOR ENGINE WITH ENERGY EFFICIENT COOLING SYSTEM." Vestnik of Astrakhan State Technical University 2021, no. 1 (May 31, 2021): 15–21. http://dx.doi.org/10.24143/1812-9498-2021-1-15-21.

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The article focuses on developing a new testing system for the Iveco 8041I06 55 R900 engine in the laboratory “Marine Diesels” under Astrakhan state technical university in the event of modernizing the test benches with ship engines. There has been considered creating an ex-perimental unit for conducting heat-balance tests of a marine engine using modern measurement and control tools. The unit consists of a converted engine powered by a generator. The engine will be tested according to the generator characteristic. There is given the data on the main technical parameters of the tested engine and on the potential configuration of the instrument base. As a load for the generator, it is planned to use a resistive load device. A fuel micro-meter will be used to measure the fuel consumption. Flow meters are selected for measuring the flow rates. Heat carriers and temperature sensors are selected for measuring temperature of the exhaust gases. The parameters of the engine under consideration are compared with the requirements of the Russian River Register for marine engines. The scope of work on converting an industrial engine into a marine engine in terms of the modernization of the cooling system has been described. The unit is designed to study the ship's cooling system operation, in which the control is carried out by changing the speed of the suspended pump depending on the temperature of the seawater. There was selected a pump and a device to regulating its rotating speed. The positive effect is achieved by reducing the power consumed by the pump. It saves the fuel and reduces the environmental damage due to the lower carbon dioxide emissions

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Mu¨ller, D., A. G. Sheard, S. Mozumdar, and E. Johann. "Capacitive Measurement of Compressor and Turbine Blade Tip to Casing Running Clearance." Journal of Engineering for Gas Turbines and Power 119, no. 4 (October 1, 1997): 877–84. http://dx.doi.org/10.1115/1.2817068.

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It is an established fact that the efficiency of a gas turbine engine has an inverse relationship with the clearance between the rotor blades and the casing (Tip Clearance, or TC). TC is an essential measurement during the testing of development engines. While commercial TC measurement systems are available, their applicability to an engine is dictated by engine size, geometry, physical accessibility, and temperature distribution around the measurement region. This paper describes the development of a TC measurement system, based on the capacitive measurement principle, which was undertaken to satisfy the application requirements of a specific class of gas turbine engines. The requirements included a relatively long and flexible cable to route the electrical signals out of the engine. The TC measurement system was successfully used during engine testing and valuable data were obtained.

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Brodov, Y. M., L. V. Plotnikov, and K. O. Desyatov. "Thermal and mechanical improvement of the air supply system of a turbocharged piston engine." Safety and Reliability of Power Industry 14, no. 2 (July 28, 2021): 108–14. http://dx.doi.org/10.24223/1999-5555-2021-14-2-108-114.

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A method of thermomechanical improvement of pulsating air flows in the intake system of a turbocharged piston engine is described. The main objective of this study is to develop a method for suppressing the rate of heat transfer to improve the reliability of a piston turbocharged engine. A brief review of the literature on improving the reliability of piston engines is given. Scientific and technical results were obtained on the basis of experimental studies on a full-scale model of a piston engine. The hot-wire anemometer method was used to obtain gas-dynamic and heatexchange characteristics of gas flows. Laboratory stands and instrumentation facilities are described in the article. The data on gas dynamics and heat exchange of stationary and pulsating air flows in gas-dynamic systems of various configurations as applied to the air supply system of a turbocharged piston engine are presented. A method of thermomechanical improvement of flows in the intake system of an engine based on a honeycomb is proposed in order to stabilize the pulsating flow and suppress the intensity of heat transfer. Data were obtained on the air flow rate and the local heat transfer coefficient both in the exhaust duct of the turbocharger compressor (i.e., without a piston engine) and in the intake system of a supercharged engine. A comparative analysis of the data has been carried out. It was found that the installation of a leveling grid in the exhaust channel of a turbocharger leads to an intensification of heat transfer by an average of 9%. It was found that the presence of a leveling grid in the intake system of a piston engine causes the suppression of heat transfer within 15% in comparison with the baseline values. It is shown that the use of a modernized intake system in a diesel engine increases its probability of failure-free operation by 0.8%. The data obtained can be extended to other types and designs of air supply systems for heat engines.

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Andoga, Rudolf, Ladislav Főző, Jozef Judičák, Róbert Bréda, Stanislav Szabo, Róbert Rozenberg, and Milan Džunda. "Intelligent Situational Control of Small Turbojet Engines." International Journal of Aerospace Engineering 2018 (June 26, 2018): 1–16. http://dx.doi.org/10.1155/2018/8328792.

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Improvements in reliability, safety, and operational efficiency of aeroengines can be brought in a cost-effective way using advanced control concepts, thus requiring only software updates of their digital control systems. The article presents a comprehensive approach in modular control system design suitable for small gas turbine engines. The control system is based on the methodology of situational control; this means control of the engine under all operational situations including atypical ones, also integrating a diagnostic system, which is usually a separate module. The resulting concept has been evaluated in real-world laboratory conditions using a unique design of small turbojet engine iSTC-21v as well as a state-of-the-art small turbojet engine TJ-100. Our results show that such advanced control system can bring operational quality of an engine with old turbocompressor core iSTC-21v on par with state-of-the-art engines.

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MITIANIEC, Władysław, and Grzegorz BAC. "Camless hydraulic valve timing system in combustion engines." Combustion Engines 146, no. 3 (November 1, 2011): 28–37. http://dx.doi.org/10.19206/ce-117089.

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The paper discusses the control of the operation of combustion engines through a camless electro-hydraulic valve timing system aiming at a lower exhaust emission and increased overall efficiency. The paper presents an electro-hydraulic valve system and a mathematical model of the fluid flow. The model was simulated in Matlab–Simulink for different geometrical parameters of the hydraulic system and electric control parameters in order to obtain a required valve lift and timing in the Toyota Yaris gasoline 1.3 l engine. The paper presents the Simulink model and the results of calculation in Simulink. Additionally, a comparison of engine parameters with a standard cam valve system and those of the camless hydraulic valve timing system have been shown for different engine speeds obtained from the simulation in GT-Power software. The obtained results show a significant increase of the engine torque and efficiency at higher engine speeds for the considered camless system in the Toyota Yaris gasoline engine. The paper showsboth the advantages and disadvantages of the described valve system.

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Duan, Chen, Shui Ming Shu, Guo Zhong Ding, and Ji Wei Yan. "Preliminary Design and Adiabatic Analysis of a 3kW Free Piston Stirling Engine." Applied Mechanics and Materials 325-326 (June 2013): 277–82. http://dx.doi.org/10.4028/www.scientific.net/amm.325-326.277.

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In recent years, as one kind of Stirling engines, free piston Stirling engines are attracting world attention. Free piston Stirling engines could be applied to the solar dish system, micro-CHP system and so on. The development of a free piston Stirling engine is discussed in this paper. The ideal adiabatic model is used in the preliminary design of the free piston Stirling engine. The key parameters of the designed engine and the thermodynamic analysis are described in detail. Then the performance of the engine is obtained.

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30

Ambrozik, Andrzej, Tomasz Ambrozik, Dariusz Kurczyński, and Piotr Łagowski. "Comparative Assessment of CI Engine Response." Transport and Communications 2, no. 1 (2014): 1–4. http://dx.doi.org/10.26552/tac.c.2014.1.1.

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The response of the piston internal combustion engine provides an important indicator to assess the engine ability to adapt to constantly varying load conditions in its operation. It is the main criterion by which engines powering automotive vehicles are evaluated. It also affects road safety. The engine response depends on the profile of the curve that shows changes in the engine torque as a function of the crankshaft rotational speed. The paper presents a comparison of CI engines representing different generations with respect to constructional level. The engines that underwent comparison were equipped with the fuel system with a rotary injection pump and with Common Rail fuel system.

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DZIUBIŃSKI, Mieczysław, Artur DROZD, Paweł KORDOS, and Arkadiusz SYTA. "Diagnosing the automobile starting system." Combustion Engines 170, no. 3 (August 1, 2017): 19–23. http://dx.doi.org/10.19206/ce-2017-303.

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This article presents a new method for analysing the torque of an internal combustion engine using registered electromechanical runs and magnetic field distribution in a starter. The aim of the study was to develop a model of the starting current of an internal combustion engine and carry out verification tests on real objects. The developed model allows to simulate the shutdown of individual cylinders. Experimental research was conducted using the Bosch FSA 740 equipment for four internal combustion engines under variable operating conditions. During testing, the starting current and relative compression in cylinders were recorded. Simulating the variable load of the starter, the magnetic induction distribution of the magnetic induction was recorded in the feed slot. The research will be used to develop a method of diagnosing the starter and determining the torque of the internal combustion engine.

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32

Sapate, Kumar D., and A. N. Tikekar. "Mechanical Modifications to Convert Small Two Strokes Carbureted Engine to Electronic Fuel Injection System Engine to Reduce Emission and Fuel Consumption." Advanced Materials Research 768 (September 2013): 213–17. http://dx.doi.org/10.4028/www.scientific.net/amr.768.213.

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The evolution of four stroke engines and improved environmental pollution control norms has pushed the two-stroke engines towards obsolescence due to their inherent design problems. This has made the existing manufacturers & users of two-stroke engines a setback. In this paper attempt has been made to high light the performance parameters in respect of fuel efficiency and emission control. In this research work an effort is made to retrofit the commonly used two stroke engine for optimal performance by using EFI engine. It mainly includes injector locations with reference to spark plug which decides the combustion efficiency of engine. It also includes the location of different sensors and subsequent modification of silencer. As the automobile engine has to operate at higher speeds, proper and firm mounting of different electronic part is essential which affects the performance of engine. After mechanical modification of engine with EFI system it is tested by connecting it to dynamometer. The results are compared with that of carbureted engine.

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PUŠKÁR, Michal, Melichar KOPAS, Marieta ŠOLTÉSOVÁ, and Matúš LAVČÁK. "System for analysis and correction of motor management." Scientific Journal of Silesian University of Technology. Series Transport 111 (June 30, 2021): 129–36. http://dx.doi.org/10.20858/sjsutst.2021.111.11.

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The innovative system, which was developed for analysis and correction of motor management, is determined for the solution of practical problems concerning the operation of the piston combustion engines. Programming of the ignition curves and fuel maps without relevant feedback, namely, without information obtained from the engine operation, increases the risk of detonation combustion, which can destroy the combustion engine. However, the main application area of this system is the development of an algorithm, which is specified for control of the combustion process based on the HCCI technology (Homogenous Charge Compression Ignition). Nowadays, the functional principle of the HCCI engine is one of the most effective possibilities on how to reach higher operational efficiency of the gasoline engine, that is, closer to the efficiency level of the diesel driving units.

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Dong, Da Lu, Chang Pu Zhao, Xiao Zhan Li, Yun Yao Zhu, and Jun Zhang. "Simulation Study of the Impact of Two-Stage Turbocharged System on Diesel Engine." Applied Mechanics and Materials 170-173 (May 2012): 3555–59. http://dx.doi.org/10.4028/www.scientific.net/amm.170-173.3555.

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With the increasing strictness of emission regulations, development direction of future diesel engines is toward the high thermal efficiency and low emissions. Supercharging technology is an important means for improving output power of diesel engines. This paper deals with the study of the two-stage turbocharging system of the non-road diesel engine. Based on GT-Power software code, a digital model of 6112 diesel engine was established. The supercharged model was calibrated by using the original experimental data. Then, four types of digital models with different two-stage turbocharging systems were constructed. The best two-stage turbocharging system was determined through investigating the impacts of different options on the performance of diesel engines. It was indicated through the study that two-stage turbocharging system can substantially increase the air flowing into the cylinder which increases the potential of power density. At the same time HC and NOx emissions can reduce. Through this study, a theoretical basis and an important reference for adopting the two-stage turbocharging system of the 6112 diesel engine were provided.

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YAMASAKI, Yudai, Yukihiro NISHIZAWA, Yoshitaka SUZUKI, and Shigehiko KANEKO. "4A13 Development of fuel flexible engine control system." Proceedings of the Symposium on the Motion and Vibration Control 2010 (2010): _4A13–1_—_4A13–13_. http://dx.doi.org/10.1299/jsmemovic.2010._4a13-1_.

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Fukuda, Masafumi, Hiroshi Harada, Tadaharu Yokokawa, and Tomonori Kitashima. "Virtual Jet Engine System." Materials Science Forum 638-642 (January 2010): 2239–44. http://dx.doi.org/10.4028/www.scientific.net/msf.638-642.2239.

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In 1999, we proposed the concept of a virtual gas turbine system which is a combination of turbine design and material design programs. Using this system, it has become possible to design a gas turbine engine and a combined cycle automatically, by inputting some basic information such as power output, turbine inlet temperature and material specifications. The derived outputs are turbine gas path dimensions, gas and cooling air flow rates, thermal efficiency, CO2 emissions, etc. We use the system to evaluate the potential improvement if a newly developed material is to be used in building the engine. Based on the virtual gas turbine system we have begun developing the virtual jet engine system, which can simulate the operation of a jet engine or a gas turbine engine to predict the degradation of materials used in the high temperature parts of the engine. The system consists of a thermal and aerodynamic analysis of the engine, a thermal and stress analysis of hot parts, and a material degradation analysis. Actual engine dimensions, operation data and material specifications are used to perform the analyses. In this paper, we will show some of the results of the use of the virtual gas turbine system, and then describe the development plan and the preliminary output of the virtual jet engine system.

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37

Legros, André, and André Chalesle. "Engine vibration filtration system." Journal of the Acoustical Society of America 80, no. 5 (November 1986): 1563. http://dx.doi.org/10.1121/1.394339.

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38

Vozniak, Oleksandr, Andrii Shtuts, and Mykhailo Zamrii. "COLLECTOR ENGINE CONTROL SYSTEM." ENGINEERING, ENERGY, TRANSPORT AIC, no. 2(113) (June 29, 2021): 57–66. http://dx.doi.org/10.37128/2520-6168-2021-2-7.

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One of the main features of the current stage of scientific and technological progress is the wider use of microelectronics in various sectors of the economy, which is constantly growing. The role of microelectronics in the development of social production is determined by its almost unlimited possibilities in solving various problems in all sectors of the economy, its profound impact on the culture and life of modern man. Particular attention is now paid to the introduction of microprocessors that solve the problem of automation of control of mechanisms, devices and equipment. Adapting the microprocessor to the conditions of a particular task is mostly done by developing appropriate software, which is then stored in program memory. Hardware adaptation in most cases is performed by connecting the necessary integrated circuits and I / O that meet the problem to be solved. In the given work the microprocessor system of regulation of turns of the collector motor of a direct current is developed. The microprocessor system is developed on the basis of the KM1816 BE 51 microprocessor using a DAC. The microprocessor program changes the engine speed in the range from 1000 to 3000 rpm. In microprocessor technology there is an independent class of large integrated circuits (BIS) - single-chip microcomputers (OMEOM), which are designed to "intellectualize" devices for various purposes. The architecture of single-chip microcomputers is the result of the evolution of microprocessors and microprocessor systems, due to the desire to significantly reduce their hardware costs and cost. Typically, these goals are achieved both by increasing the integration of the BIS and by finding a compromise between cost, hardware costs and technical characteristics of the OMEOM. Development of control systems on single-chip microcomputers is one of the most promising areas in the field of process automation, control and management.

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39

Chen, G., P. L. Flynn, S. M. Gallagher, and E. R. Dillen. "Development of the Low-Emission GE-7FDL High-Power Medium-Speed Locomotive Diesel Engine." Journal of Engineering for Gas Turbines and Power 125, no. 2 (April 1, 2003): 505–12. http://dx.doi.org/10.1115/1.1563241.

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This paper summarizes the technical development of the low-emission GE-7FDL series locomotive diesel engine. The development focused on reducing the engine exhaust NOx emission significantly while reducing and curbing other visible and nonvisible emissions with minimal adverse impact on the engine fuel efficiency and minimal changes to the engine system and components. Concepts were analyzed, and were investigated using a single-cylinder 7FDL research engine. A low-emission 16-cylinder 7FDL engine and a GE locomotive prototype were built and tested for performance demonstration, function evaluation, and design optimization. The GE low-emission 7FDL engines and locomotives have been in production. The newly developed low-emission locomotive engine meets the EPA Tier-0 levels without fuel efficiency penalty. This was accomplished with minimal changes to the engine system and components. The desired engine reliability performance is retained. The engines are interchangeable with the preceding 7FDL baseline models, and the upgrade of the existing baseline engines to the low-emission version is facilitated.

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Hansen, L. D., G. D. Kucera, J. S. Clemons, and J. Lee. "Aircraft Gas Turbine Engine Fuel Pumping Systems in the 21st Century." Journal of Engineering for Gas Turbines and Power 119, no. 3 (July 1, 1997): 591–97. http://dx.doi.org/10.1115/1.2817025.

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Since their introduction, main engine fuel pumping systems for aircraft gas turbine engines have remained relatively unchanged. The main engine fuel pump has been an engine accessory gearbox driven, positive displacement pump (except for the Concorde), until recently when centrifugal pumps were introduced on Pratt-Whitney and General Electric military engines. This paper describes some of the issues that must be addressed as pumping system technology moves into the 21st century and gives a description of two programs that address these issues.

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41

Qi, Bin, Xia Sun, Yu Rong Liu, Xiao Ming Sun, and Miao Wang. "Rapid Design System Based on Re-Development of Rhino." Applied Mechanics and Materials 121-126 (October 2011): 1053–57. http://dx.doi.org/10.4028/www.scientific.net/amm.121-126.1053.

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Fire engine design is based on the traditional method and product design cycle. In this way, it cost a lot of time. The article proposed a new fire engine design flow. Under the parameter restraint conceptual design method, Rapid Design System (QDS) constructed the database which has the parameter reference value non-parameter model. This article taken the fire engine as an example, and constructed the fire engine Rapid Design System using Script, Visual Basic 2008, and Access2007. The example confirmed this method to raise fire engine's design efficiency.

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Davies, W. J., R. A. Baumbick, and R. W. Vizzini. "Conceptual Design of an Optic-Based Engine Control System." Journal of Engineering for Gas Turbines and Power 110, no. 1 (January 1, 1988): 28–32. http://dx.doi.org/10.1115/1.3240082.

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Advanced integrated flight and propulsion control systems may require the use of optic technology to provide enhanced electromagnetic immunity and reduced weight. Immunity to electromagnetic interference and pulses is required for integrated systems where flight and propulsion control systems communicate with each other and diverse systems located throughout a composite aircraft. Weight reduction is crucial to the complex engine control systems required for advanced engines incorporating diagnostics, variable geometry and vectoring/reversing exhaust nozzles. A team of Pratt & Whitney, McDonnell Aircraft, Hamilton Standard, and United Technologies Research Center have developed the conceptual design of an optic engine control system, under a contract from NASA Lewis, entitled Fiber Optic Control System Integration (FOCSI). FOCSI is a triservice/NASA joint program designed to provide the optic technology requirements for advanced fighter/attack aircraft.

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43

Kochev, N. S., B. P. Zhilkin, and L. V. Plotnikov. "Improving the technical and environmental performance of piston engines by upgrading the fuel system." E3S Web of Conferences 124 (2019): 01014. http://dx.doi.org/10.1051/e3sconf/201912401014.

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The article presents the results of an experimental study of the dispersion of superheated water through cylindrical channels and nozzles of piston internal combustion engines under different initial conditions. The advantages and disadvantages of modern diesel engine fuel systems are discussed in the article. The process of explosive boiling in relation to the fuel system of a piston engine is formulated and briefly described. A description of the laboratory setup and methods of conducting experiments is given in the article. The results of the visualization of sprayed superheated water through a cylindrical channel and through a diesel engine nozzle of 21/21 dimension are presented. The original scheme of the fuel system for a diesel engine using the effect of explosive boiling is proposed. Preliminary estimates have shown that the use of such a fuel system will increase the reliability of the combustion chamber elements of a piston engine, reduce specific fuel consumption (up to 2%) and reduce the amount of harmful substances in exhaust gases (an average of 12% compared with traditional fuel systems).

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Ali, Rashid, Anjali Saxena, Richa Gupta, and M. M. Sufyan Beg. "Myriad- a Novel User Feedback Based Metasearch Engine." Advanced Materials Research 433-440 (January 2012): 7554–62. http://dx.doi.org/10.4028/www.scientific.net/amr.433-440.7554.

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Metasearch engine is a system that provides unified access to multiple existing search engines. After the results returned from all used component search engines are collected, the metasearch system merges the results into a single ranked list which is expected to be better than the results of the best of the participating search systems. The success of a metasearch engine depends mainly on their rank aggregation method. The system is a better one, if the aggregated list of results displayed before the user satisfies the user with his information need. In this paper, we discuss the development of a metasearch engine that performs user feedback based metasearching using modified rough set based aggregation. Metasearching using the modified rough set based aggregation is performed in two phases namely the ranking rule learning phase and the rank aggregation phase. For each query in the training set, we mine the ranking rules and select the best rules-set by performing cross-validation test. Once the system is trained, we use the best rule set to get the overall ranking for the results returned from different search systems in response to other queries. We also present few snapshots of our system.

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Pszczółkowski, Józef. "Mechanical features of the combustion engine electric starting system." AUTOBUSY – Technika, Eksploatacja, Systemy Transportowe 19, no. 6 (June 30, 2018): 661–68. http://dx.doi.org/10.24136/atest.2018.152.

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Engine crankshaft driving by the starter is characterised as a diagnostic process. The article discusses the working conditions of the electric starter when driving the engine crankshaft in terms of the equilibrium of the engine resistance torque and the moment of force generated by starting system. The resistance sources in the internal combustion engine were characterized and factors influencing them were discussed, its components and dependencies allowing for their determination were indicated. The variability of the engine resistance torque in the cycle of its operation as well as the variability of the torque and rotational speed of the crankshaft in the process of propelling the shaft are indicated. The stand and the methodology for testing the engine's internal combustion engine and the influence of the temperature and power of the starting system on registered start signals are presented. The cause and effect relationships of the engine resistance torque and the features – parameters of the starting system operation were indicated. It was shown that the values of signals recorded during the crankshaft driving have the features of engine diagnostic parameters in the aspect of the combustion chamber tightness and the total resistance of the internal combustion engine.

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46

MITIANIEC, Władyslaw, and Konrad BUCZEK. "Modification of four-stroke engine for operation in two-stroke cycle for automotive application." Combustion Engines 162, no. 3 (August 1, 2015): 3–12. http://dx.doi.org/10.19206/ce-116860.

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The main disadvantages of two-stroke engines such a big fuel consumption and big emission of hydrocarbons or carbon monoxide can be reduced by new proposal of design of two stroke engine based on four stroke engines. The paper describes the operation of high supercharged spark ignition overhead poppet valve two-stroke engine, which enables to achieve higher total efficiency and exhaust gas emission comparable to four-stroke engines. The work of such engines is possible by proper choice of valve timings, geometrical parameters of inlet and outlet ducts and charge pressure. The engine has to be equipped with direct fuel injection system enabling lower emission of pollutants. The work is based on theoretical considerations and engine parameters are determined on the simulation process by use GT-Power program and CFD program for different engine configurations. The initial results included in the paper show influence of valve timing on engine work parameters and predicted exhaust gas emission. The simulation results show that the nitrogen oxides are considerably reduced in comparison to four-stroke engines because of higher internal exhaust gas recirculation. The innovation of this proposal is applying of variable valve timing with turbocharging system in the two-stroke engine and obtaining a significant downsizing effect. The conclusions shows the possibilities of applying two-stroke poppet valve engine as a power unit for transportation means with higher total efficiency than traditional engines with possible change of engine operation in two modes: two- and four stroke cycles. The main disadvantages of two-stroke engines such a big fuel consumption and big emission of hydrocarbons or carbon monoxide can be reduced by new proposal of design of two stroke engine based on four stroke engines. The paper describes the operation of high supercharged spark ignition overhead poppet valve two-stroke engine, which enables to achieve higher total efficiency and exhaust gas emission comparable to four-stroke engines. The work of such engines is possible by proper choice of valve timings, geometrical parameters of inlet and outlet ducts and charge pressure. The engine has to be equipped with direct fuel injection system enabling lower emission of pollutants. The work is based on theoretical considerations and engine parameters are determined on the simulation process by use GT-Power program and CFD program for different engine configurations. The initial results included in the paper show influence of valve timing on engine work parameters and predicted exhaust gas emission. The simulation results show that the nitrogen oxides are considerably reduced in comparison to four-stroke engines because of higher internal exhaust gas recirculation. The innovation of this proposal is applying of variable valve timing with turbocharging system in the two-stroke engine and obtaining a significant downsizing effect. The conclusions shows the possibilities of applying two-stroke poppet valve engine as a power unit for transportation means with higher total efficiency than traditional engines with possible change of engine operation in two modes: two- and four stroke cycles.

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STELMASIAK, Zdzisław, Jerzy LARISCH, and Dariusz PIETRAS. "Issues related to naturally aspirated and supercharged CI engines fueled with diesel oil and CNG gas." Combustion Engines 169, no. 2 (May 1, 2017): 24–31. http://dx.doi.org/10.19206/ce-2017-205.

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The study presents results of a research work on two various Diesel engines adapted for dual fuel feeding with CNG gas and diesel oil. The first engine is naturally aspirated, medium-sized engine, corresponding to engines mounted as power units in trucks and buses. Natural gas was used as the main fuel to this engine, and amount of diesel oil was reduced to minimum according to criterion of correct operation of injection system and reliable ignition of gaseous mixture. The second engine was a high-speed, supercharged engine of Fiat 1.3 MJT type, destined to powering of passenger cars. This engine is equipped with modern engine technologies, high-pressure injection system of Common Rail type with division of fuel dose and recirculation of exhaust gases, with catalytic converter and DPF filter. To fueling of this engine was used small additive of gas, aimed at reduction of smokiness of exhaust gases. Performed research has shown beneficial effect of gas on engine efficiency, reduction of concentration of nitrogen oxides, smokiness of exhaust gases and emission of particulate matter. Simultaneously, however, emissions of carbon monoxide and hydrocarbons had increased, especially in area of partial engine loads. Results of the study are pointing at possibility of installation of dual fuel system in traction engines with different size.

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Cui, Yi, Hongzhong Gu, Kangyao Deng, and Shiyou Yang. "Study on Mixed Pulse Converter (MIXPC) Turbocharging System and Its Application in Marine Diesel Engines." Journal of Ship Research 54, no. 01 (March 1, 2010): 68–77. http://dx.doi.org/10.5957/jsr.2010.54.1.68.

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In order to improve fuel efficiency and power density, the boost pressure of diesel engine is increasing continuously. The increase in boost level leads to some problems, such as lack of air under part load operating conditions, response delay during transient processes, and high mechanical and thermal load. In order to meet the high boost level demand, a new type of turbocharging system—mixed pulse converter (MIXPC) turbo-charging system for multicylinder diesel engines (from 4 to 20 cylinders) has been invented. A turbocharged diesel engine simulation model, based on one-dimensional finite volume method (FVM) and total variation diminishing (TVD) scheme, has been developed and used to design and analyze the MIXPC turbocharging system. The applications of MIXPC system in in-line 8- and 4-cylinder and V-type 16-cylinder medium-speed marine diesel engines have been studied by calculation and experiments. The results show that the invented MIXPC system has superior engine fuel efficiency and thermal load compared with original turbocharging systems.

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Shatrov, Mikhail G., Vladimir V. Sinyavski, Andrey Yu Dunin, Ivan G. Shishlov, and Andrey V. Vakulenko. "METHOD OF CONVERSION OF HIGH- AND MIDDLE-SPEED DIESEL ENGINES INTO GAS DIESEL ENGINES." Facta Universitatis, Series: Mechanical Engineering 15, no. 3 (December 9, 2017): 383. http://dx.doi.org/10.22190/fume171004023s.

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The paper aims at the development of fuel supply and electronic control systems for boosted high- and middle-speed transport engines. A detailed analysis of different ways of converting diesel engine to operate on natural gas was carried out. The gas diesel process with minimized ignition portion of diesel fuel injected by the Common Rail (CR) system was selected. Electronic engine control and modular gas feed systems which can be used both on high- and middle-speed gas diesel engines were developed. Also diesel CR fuel supply systems were developed in cooperation with the industrial partner, namely, those that can be mounted on middle-speed diesel and gas diesel engines. Electronic control and gas feed systems were perfected using modeling and engine tests. The high-speed diesel engine was converted into a gas diesel one. After perfection of the gas feed and electronic control systems, bench tests of the high-speed gas diesel engine were carried out showing a high share of diesel fuel substitution with gas, high fuel efficiency and significant decrease of NOх and СО2 emissions.

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PIASECZNY, Leszek, and Mirosław WALKOWSKI. "Simulation studies of selected characteristics of the injection system the common rail medium-speed research engine." Combustion Engines 151, no. 4 (November 1, 2012): 72–76. http://dx.doi.org/10.19206/ce-117023.

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Injection Systems of Common Rail type are becoming widely used in marine engines. The aim of the research and development of these systems is to optimize the multi-injection process. The authors of the paper present the results of research on the fuel supply system of research common-rail marine medium-speed engine. The study was conducted for the nominal circulation engine speed. For the analysis were established three variants of fuel supply – a single dose, two-piece and three-piece The interdependence of measured injection parameters and their effect on engine operation have been presented in graphical form.

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Journal articles on the topic 'Engine system'

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