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Performance, emission and combustion characteristics of CI engine fuelled with diesel and hydrogen

Frontiers in Energy 2015年第4期9卷 486-494页

作者： R. Senthil KUMAR M. LOGANATHAN E. James GUNASEKARAN Department of Mechanical Engineering Annamalai University Chi- dambaram 608002 India

Hydrogen （H2） is being considered as a primary automotive fuel and as a replacement for conventional fuels. Some of the desirable properties, like high flame velocity, high calorific value motivate us to use hydrogen fuel as a dual fuel mode in diesel engine. In this experiment, hydrogen was inducted in the inlet manifold with intake air. The experiments were conducted on a four stroke, single cylinder, water cooled, direct injection （DI）, diesel engine at a speed of 1500r/min. Hydrogen was stored in a high pressure cylinder and supplied to the inlet manifold through a water-and-air-based flame arrestor. A pressure regulator was used to reduce the cylinder pressure from 140 bar to 2 bar. The hydrogen was inducted with a volume flow rate of 41 pm, 61 pm and 81 pm, respectively by a digital volume flow meter. The engine performance, emission and combustion parameters were analyzed at various flow rates of hydrogen and compared with diesel fuel operation. The brake thermal efficiency （BTE） was increased and brake specific fuel consumption （BSFC） decreased for the hydrogen flow rate of 81 pm as compared to the diesel and lower volume flow rates of hydrogen. The hydrocarbon （HC） and carbon monoxide （CO） were decreased and the oxides of nitrogen （NOx） increased for higher volume flow rates of hydrogen compared to diesel and lower volume flow rates of hydrogen. The heat release rate and cylinder pressure was increased for higher volume flow rates of hydrogen compared to diesel and lower volume flow rates of hydrogen.

关键词： hydrogen brake thermal efficiency crankangle compressed ignition (CI)

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Performance,combustion,and emission characteristics of on a diesel engine fuelled with hydrogen compressed natural gas and Kusum seed biodiesel

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Waste Disposal and Sustainable Energy 2023年第2期5卷 151-163页

作者： Krishna Bharathi Parimi Bhatti Sukhvinder Kaur Sathya Vara Prasad Lankapalli Jaikumar Sagari Department of Mechanical Engineering Andhra UniversityVisakhapatnamIndia Department of Mechanical Engineering GITAM Institute of TechnologyVisakhapatnamIndia

Renewable fuels have many advantages over fossil fuels because they are biodegradable and sustainable,and help mitigate social and environmental *** objective of the present study is to evaluate the performance,combustion,and emission characteristics of a compression–ignition engine using hydrogen compressed natural gas(HCNG)-enriched Kusum seed biodiesel blend(KSOBD20).The flow rate of HCNG was set at 5 L/min,10 L/min,and 15 L/min,and the injection pressure was varied in the range of 180 bar to 240 *** thermal efficiency(BTE)and brake-specific fuel consumption(BSFC)were improved when HCNG was added to the *** characteristics,namely,cylinder pressure(CP)and net heat release rate(NHRR),were also *** of carbon monoxide(CO),hydrocarbons(HC),and smoke were also reduced,with the exception of nitrogen oxides(NO_(x)).The higher injection pressure(240 bar)had a positive effect on the operating *** an injection pressure of 240 bar,for KSOB20+15 L/min HCNG,the highest BTE and the lowest BSFC were found to be 32.09%and 0.227 kg/kWh,***,the CP and NHRR were 69.34 bar and 66.04 J/°.CO,HC,and smoke levels were finally reduced to 0.013%,47×10^(-6)and 9%,respectively,with NO_(x)levels at 1623×10^(-6).For optimum results in terms of engine characteristics,the fuel combination KSOBD20+15 L/min HCNG at FIP 240 bar is recommended.

关键词： Biodiesel Compressed natural gas Injection pressure Emission Cylinder pressure brake thermal efficiency

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