Effects of diesel pre-injection on the combustion and emission characteristics of a common-rail diesel engine fueled with diesel-methanol dual-fuel

Li, Yangyang; Chen, Huan; Zhang, Chunhua; Chen, Hao

doi:10.1016/j.fuel.2020.119824

Cited by 32 publications

(3 citation statements)

References 34 publications

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“…They have a close relationship that is called trade-off [27]. Simultaneous reduction of smoke and NOx is very difficult due to inhomogeneous of fuel-air mixture and temperature in the combustion chamber [28]. Smoke is usually a result of incomplete combustion [25].…”

Section: Nox and Smoke Emissionsmentioning

confidence: 99%

Investigation of the Performance and Emissions of an Engine Operated with CEO2 Nano Additive Doped Biodiesel

Çelik

Bayındırlı

İLHAK

2022

International Journal of Automotive Science and Technology

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The production of greenhouse gases such as carbon dioxide causes global warming and many other environmental problems. Diesel engines are widely used due to their higher output torque value, better thermal efficiency and durability compared to gaso-line engines. Because of rapid consumption and mitigation of diesel as a fossil fuel, bio-diesel has recently received significant attention as a renewable energy source. There are several sources in order to produce biodiesel. Animal fats, inedible vegetable oils, waste oils and other low-value bioenergy raw materials are suitable sources for biodiesel pro-duction as they are renewable and have no impact on food safety. In this study, CeO2 nano additives at concentrations of 50 ppm and 75 ppm were added to cottonseed based biodiesel. The experiments were conducted at 4 different load conditions on a 3-cylinder water-cooled diesel engine. According to the test results, it was observed that with increasing nano additive concentration, thermal efficiency was increased and spe-cific fuel consumption was reduced. As well as, the results indicated that CO and soot emissions were reduced, while NOx emissions were increased due to the improvement of the combustion performance caused by CeO2 nanoparticles.

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Section: Nox and Smoke Emissionsmentioning

confidence: 99%

Investigation of the Performance and Emissions of an Engine Operated with CEO2 Nano Additive Doped Biodiesel

Çelik

Bayındırlı

İLHAK

2022

International Journal of Automotive Science and Technology

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“…Methanol fuel is currently one of the most potent alternative fuels for internal combustion engines. It has a better performance in the field of marine power plants considering the comprehensive consideration of its emission, the wide range of fuel sources, the cost of the whole machine modification, and the operating economy application prospects [2][3][4][5][6] .…”

Section: Introductionmentioning

confidence: 99%

Combustion Characteristics of Diesel Methanol Blended Fuel Ship Engines

et al. 2023

J. Phys.: Conf. Ser.

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With increasingly stringent fuel emission control in some river traffic control zones and inland waters, this paper addresses the problem of substandard diesel fuel emissions, relying on the theoretical basis of numerical simulation of diesel engine in-cylinder combustion. The combustion and emission characteristics of diesel-water-mixed methanol blended fuel are simulated and analyzed based on the AVL FIRE software. The combustion model of the diesel engine was established, and the changes of in-cylinder pressure, temperature, heat release rate, and emission concentration were investigated for D85W10, D85W15, and D85W20 blends respectively, which were compared with diesel. The results show that as the proportion of water in the fuel mixture increases, the in-cylinder temperature gradually increases, the in-cylinder pressure slightly decreases, the heat release rate does not change much, and the NO and Soot emissions decrease.

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“…1 Conventional CI engines operating on diesel fuel have high thermal efficiency, but they suffer from high soot emissions and NOx due to heterogeneous fuel air mixtures and high combustion temperatures. 2 In order to achieve the best of both combustion modes, several advanced concepts like homogeneous charge compression ignition (HCCI) 3,4 reactivity controlled compression ignition (RCCI) [5][6][7] ,gasoline compression ignition (GCI), 8,9 partially premixed combustion (PPC), 10,11 etc. have been proposed in the literature.…”

Section: Introductionmentioning

confidence: 99%

Modeling the impact of the fuel injection strategy on the combustion and performance characteristics of a heavy-duty GCI engine

Addepalli,

Pamminger,

Scarcelli

et al. 2023

International Journal of Engine Research

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Gasoline compression ignition (GCI) is a promising strategy to achieve high thermal efficiency and low emissions with limited modifications to the conventional diesel engine hardware. It is a partially premixed concept, which derives its superiority from higher volatility and longer ignition delay of gasoline-like fuels combined with higher compression ratio typical of diesel engines. The present study investigates the combustion process in a GCI engine operating with different injection strategies using computational fluid dynamics (CFD). Simulations are carried out on a single cylinder of a multi cylinder heavy-duty compression ignition engine, which operates at a compression ratio of 17:1 and an engine speed of 1038 rev/min. Two different injection strategies viz., late injection (LI), and early pilot injection (EP) are investigated to understand their impact on combustion and performance of the engine. Renormalized group (RNG) k-ε model is used to describe in-cylinder turbulence and KH RT model is used to simulate the fuel spray breakup. The developed CFD methodology is validated against relevant experimental data under a wide range of operating conditions for each injection strategy. The developed CFD methodology was found to capture the engine combustion behavior quite well. Based on the validated CFD model, the differences in the progress of combustion event for the two injection strategies is highlighted. It was found that a larger pilot fuel mass fraction results in a steeper rise in the initial heat release rate which in turn influences the transition to mixing controlled combustion. In line with the experimental data, the study showed that the late pilot injection strategy with three injection pulses, results in higher performance compared to the other conditions.

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Effects of diesel pre-injection on the combustion and emission characteristics of a common-rail diesel engine fueled with diesel-methanol dual-fuel

Cited by 32 publications

References 34 publications

Investigation of the Performance and Emissions of an Engine Operated with CEO2 Nano Additive Doped Biodiesel

Investigation of the Performance and Emissions of an Engine Operated with CEO2 Nano Additive Doped Biodiesel

Combustion Characteristics of Diesel Methanol Blended Fuel Ship Engines

Modeling the impact of the fuel injection strategy on the combustion and performance characteristics of a heavy-duty GCI engine

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