Abstract
The fuel evaporation in combustion chamber of diesel engine is decisive for the subsequent destruction of fuel molecules. The evaporation process in combustion chamber of diesel engine operating on alternative fuels is understudied. The paper is devoted to the theoretical study of evaporation process of ethanol and rape oil in combustion chamber of diesel engine. It is assumed that fuel spray consists of a great number of identical droplets. The diameter of these theoretical droplets is equal to the average volume diameter of real droplets. A mathematical model given in the paper takes into account the physical characteristics of fuel, design features of sprayer, temperature and pressure of gases in combustion chamber. The engine performance (temperature and gas pressure in combustion chamber) has been determined on a test bench in the Vyatka State Agricultural Academy. The engine worked on rape oil and ethanol with the use of binary system of fuel supply. The paper presents the results of theoretical calculations of evaporation of rape oil and ethanol in combustion chamber.
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