Influence of crankshaft speed on biofuel combustion in a diesel engine

Abstract

Abstract At present, the use of renewable alternative fuels of non-petroleum origin has become a challenge. Primarily, this is due to the fact that oil resources are gradually being depleted, and their cost is growing proportionally every year. Switching to renewable fuels will reduce air pollution and ensure independence from crude oil. The article presented describes the results of bench tests of an air-cooled diesel engine 2F 10.5/12.0 running on methyl alcohol and methyl ether of rapeseed oil. Herewith, a dual fuel supply system was used. That allowed ensuring synchronous fuel feeding into the engine cylinder. The article also presents diagrams of indicator pressure, heat release and roughness of the combustion process of a diesel engine running on alternative fuels, depending on the change in the crankshaft speed. Along with this, positive environmental effects were also revealed in terms of the amount of toxic agents in the exhaust gases of a tractor diesel engine. Thus, there is a significant reduction in nitrogen oxides (by 47.4%) as compared to the diesel process, and the soot content in the exhaust gases has decreased by 10.42 times.