Effect ofHydrogen Use on Diesel Engine Performance

[摘要] Necessity of pollutant emissions decreasing, a great interest aspect discussed at 2015 Paris Climate Conference, highlights the necessity of alternative fuels use at diesel engines. Hydrogen is considered a future fuel for the automotive industry due to its properties which define it as the cleanest fuel and due to the production unlimited sources. The use of hydrogen as fuel for diesel engines has a higher degree of complexity because of some hydrogen particularities which lead to specific issues of the hydrogen use at diesel engine: tendency of uncontrolled ignition with inlet backfire, in-cylinder combustion with higher heat release rates and with high NOxlevel, storage difficulties. Because hydrogen storing on vehicle board implies important difficulties in terms of safety and automotive range, the partial substitution of diesel fuel by hydrogen injected into the inlet manifold represents the most efficient method. The paper presents the results of the experimental researches carried on a truck diesel engine fuelled with diesel fuel and hydrogen, in-cylinder phenomena's study showing the influence of some parameters on combustion, engine performance and pollutant emissions. The paper novelty is defined by the hydrogen fuelling method applied to diesel engine and the efficient control of the engine running.

[发布机构] Department of Thermotechnics, Engines, Thermical and Frigorific Equipment, University Politehnica of Bucharest, Blvd. Splaiul Independentei no. 313, Romania^1;Department of Automotive Engineering, University Politehnica of Bucharest, Blvd. Splaiul Independentei no. 313, Romania^2

[效力级别] 能源学

[关键词] Degree of complexity;Diesel engine performance;Engine performance;Experimental research;Heat Release Rate (HRR);In-cylinder combustion;Partial substitution;Pollutant emission