The study of the biofuel-operated diesel engine with heating.

Abstract

To reduce the concentration of hydrocarbon compounds, carbon monoxide, and nitrogen oxides in exhaust gases and to increase the completeness of combustion when using biofuel, it is proposed to use heating of biofuel. On the basis of experimental studies, the optimal heating range of biofuel - from 115 to 120 °C. They are obtained the values of hourly and specific fuel consumption, carbon monoxide emissions, hydrocarbon compounds and nitrogen oxides depending on the engine load when working on diesel fuel of petroleum origin, biofuel without heating and with heating. It is established that when using biofuel without heating, depending on the engine load, the fuel consumption is in the range of 17.67 to 27.77% when compared to the performance of diesel fuel of petroleum origin. The use of biofuel with temperature 120 °C immediately before injection into the engine cylinders reduces the consumption of biofuel from 2.78 to 9.34% depending on the engine load. When using biofuel, emissions of hydrocarbons and oxides of nitrogen do not differ significantly from the emissions while engine operation with diesel fuel of petroleum origin, however, the emissions of carbon monoxide are reduced almost twice. The use of heating of biofuel immediately before injection into the engine cylinders is reduced fuel consumption that indicates a more complete combustion of high-molecular compounds of biofuel.