RESEARCH OF CHARACTERISTICS OF WORKING CYCLE OF HIGH-SPEED DIESEL ENGINE OPERATING ON BIOFUELS RME-E AND D-RME-E. PART 2. INDICATORS AND CHARACTERISTICS OF HEAT RELEASE IN DIESEL CYLINDER

This paper presents material about using two-component RME-E and three-component D-RME-E biodiesels in high-speed diesel engines. The results of the analysis of fuel injection parameters described in Part I of this scientific paper - Research of characteristics of working cycle of high-speed diesel engine operating on biofuels RME-E and D-RME-E. Part 1. Indicators of fuel injection system and indicative process - allow conducting a coherent research of heat release in the cylinder of diesel engines transferred from operation on mineral diesel D to mixed biodiesels containing E. Effects of increased ethanol E in the biodiesel of 1A41 diesel engine have been analysed in a wide range of loads, ranging from 0.25 to 1.0 P-enom. It was found that the result of the transfer from two-phase heat release to one-phase heat release is an increase in the fuel's economy of the engine for every 10% increase of E in the fuel (increase of indicative process efficiency makes up 0.4 divided by 0.5%). Dependency of heat release and nitrogen oxide emissions in the exhaust gases remains the same for mineral diesel, RME-E and D-RME-E. Indicators of cyclic stability of the diesel engine, operating on biodiesels containing E <= 30%, did not exceed those that are common for diesel engines operating on mineral diesel.