Optimization of the combustion chamber geometry and injection parameters on a light-duty diesel engine for emission minimization using multi-objective genetic algorithm

Şener, Ramazan; Gül, M. Zafer

doi:10.1016/j.fuel.2021.121379

Cited by 32 publications

(10 citation statements)

References 31 publications

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“…Alternative fuel usage is one of the exhaust decreasing methods 21 and there are many alternative fuels are used to diminish exhaust emissions from diesel engines such as hydrogenated vegetable oil (HVO), 22 biodiesel, 23 biogas, 24 natural gas, 25 bioethanol 26 used in CI engines. Studies on the use of WTPO as an alternative fuel in CI engines are very limited.…”

Section: Introductionmentioning

confidence: 99%

Renewable energy resources: Combustion and environmental impact of diesel with pyrolytic and biodiesel blends

Sönmez

Okumuş

Safa

et al. 2022

Energy & Environment

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The worldwide increasing energy demand, interest in alternative energy production and limited resources have made it inevitable to turn to recovering wastes, such as waste tires. Waste tires with annual increase of 2%, corresponding to significant reserves all over the world, brings a serious environmental pollution. In this study, energy recovery was planned considering environmental pollution caused by waste tires and waste cooking oils, both. Accordingly, performance and emission analyzes were carried out using fuels formed by mixing pyrolytic oil obtained from waste tires (WTPO) and biodiesel obtained from waste cooking oil with diesel fuel in a single cylinder engine. The experiments are carried out at 2800 rpm and at full load condition. The findings of engine performance and exhaust emissions were evaluated. While the maximum brake specific fuel consumption (Bsfc) value was determined as 2100 g/kWh for blend fuel of 30% biodiesel and 10% WTPO in diesel fuel, the maximum brake thermal efficiency (Bte) value was determined as 33.541% for P30 fuel. The crank angles yielding maximum in-cylinder pressures approach to top dead center, with increasing biodiesel fraction while keeping WTPO fraction constant. While the increase in the amount of WTPO in the test fuels has an effect on the increase of CO emissions, and increasing biodiesel ratio has reduced the CO emissions. Also the use of biodiesel without WTPO increases NOx emissions slightly, while providing an effective reduction at high WTPO fractions. At low WTPO fractions, biodiesel has reduced HC emissions, while at high WTPO fractions has increased.

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Section: Introductionmentioning

confidence: 99%

Renewable energy resources: Combustion and environmental impact of diesel with pyrolytic and biodiesel blends

Sönmez

Okumuş

Safa

et al. 2022

Energy & Environment

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“…Khanjani et al used response surface methodology (RSM) to study the effects of different formulations of emulsified fuel on engine performance and emissions, and the results showed that emulsified fuel could reduce engine emissions [17]. Şener and Gul optimized piston geometry using CONVERGE and CAESES software combined with multiobjective genetic algorithm (MOGA), and the results showed that the optimized piston could reduce NOx and soot emissions [18]. Golzari et al studied the influence of water injection on the efficiency and emissions of a small single-cylinder gasoline direct injection engine, and the results showed that increasing water injection volume could improve the net efficiency of the engine while reducing emissions [19].…”

Section: Introductionmentioning

confidence: 99%

Multiobjective Optimization of the Performance and Emissions of a Large Low-Speed Dual-Fuel Marine Engine Based on MNLR-MOPSO

Cong

Gan

Wang

et al. 2021

JMSE

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With increasingly strict emission regulations and growing environmental concerns, it is urgent to improve engine performance and reduce emissions. In this paper, multivariate nonlinear regression (MNLR) combined with multiobjective particle swarm optimization (MOPSO) was implemented to optimize the performance and emissions of a large low-speed two-stroke dual-fuel marine engine. First, a simulation model of a dual-fuel engine was established using AVL-BOOST software. Next, a single-factor scanning value method was applied to control a range of variables, including intake pressure, intake temperature, and natural gas mass fraction. Then, a nonlinear regression model was established using the statistical multivariate nonlinear regression equation. Finally, the multiobjective optimization algorithm implementing MOPSO was used to solve the trade-off between performance and emissions. It was found that when the intake pressure was 3.607 bar, the intake temperature was 297.15 K and the natural gas mass fraction was 0.962. The engine power increased by 0.34%, the brake specific fuel consumption (BSFC) reduced by 0.21%, and the NOx emissions reduced by 39.56%. The results show that the combination of multiple nonlinear regression and intelligent optimization algorithm is an effective method to optimize engine parameter settings.

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“…The efficiency of vehicle engines depends on several factors, such as the geometry of the combustion chamber, as well as the reactions that take place there (lubricating oils, etc.). These parameters have been widely studied in recent decades [11][12][13][14][15][16][17][18][19][20][21][22]: production lines are now optimized and these engines are increasingly reliable. However, an important aspect of engine efficiency-combustion-is not yet optimized, since our engines emit unburned gases such as carbon monoxide (CO) and greenhouse gases such as carbon dioxide (CO2) [23][24][25].…”

Section: Introductionmentioning

confidence: 99%

Review on the Effect of the Phenomenon of Cavitation in Combustion Efficiency and the Role of Biofuels as a Solution against Cavitation

et al. 2021

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Concerning the problem of wanting the performance of heat engines used in the automotive, aeronautics, and aerospace industries, researchers and engineers are working on various possibilities for improving combustion efficiency, including the reduction of gases such as CO, NOx, and SOx. Such improvements would also help reduce greenhouse gases. For this, research and development has focused on one factor that has a significant impact on the performance of these engines: the phenomenon of cavitation. In fact, most high-performance heat engines are fitted with a high-speed fuel supply system. These high speeds lead to the formation of the phenomenon of cavitation generating instabilities in the flow and subsequently causing disturbances in the combustion process and in the efficiency of the engine. In this review article, it is a question of making a state-of-the-art review on the various studies which have dealt with the characterization of the phenomenon of cavitation and addressing the possible means that can be put in place to reduce its effects. The bibliographic study was carried out based on five editors who are very involved in this theme. From the census carried out, it has been shown that there are many works which deal with the means of optimization that must be implemented in order to fight against the phenomenon of cavitation. Among these solutions, there is the optimization of the geometry of the injector in which the fuel flows and there is the type of fuel used. Indeed, it is shown that the use of a biofuel, which, by its higher viscosity, decreases the effects of cavitation. Most of these jobs are performed under cold fluidic conditions; however, there is little or no work that directly addresses the effect of cavitation on the combustion process. Consequently, this review article highlights the importance of carrying out research work, with the objective of characterizing the effect of cavitation on the combustion process and the need to use a biofuel as an inhibitor solution on the cavitation phenomenon and as a means of energy transition.

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Optimization of the combustion chamber geometry and injection parameters on a light-duty diesel engine for emission minimization using multi-objective genetic algorithm

Cited by 32 publications

References 31 publications

Renewable energy resources: Combustion and environmental impact of diesel with pyrolytic and biodiesel blends

Renewable energy resources: Combustion and environmental impact of diesel with pyrolytic and biodiesel blends

Multiobjective Optimization of the Performance and Emissions of a Large Low-Speed Dual-Fuel Marine Engine Based on MNLR-MOPSO

Review on the Effect of the Phenomenon of Cavitation in Combustion Efficiency and the Role of Biofuels as a Solution against Cavitation

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