Combustion characteristics and heat release analysis of a DI compression ignition engine fueled with diesel-dimethyl carbonate blends

Investigation on combustion characteristics and heat release analysis of a DI compression ignition engine fueled with diesel-dimethyl carbonate (DMC) blends were carried out on a compression ignition engine. The study shows that the premised combustion is prolonged and the duration of the diffusive combustion is shortened with the increase of DMC addition. For a specific brake mean effective pressure (BMEP), the maximum cylinder gas pressure, the maximum rate of pressure rise and the maximum rate of heat release increase with the increase of DMC addition at the middle and high loads while they remains less variation with DMC addition at the small load. The ignition delay increases while the rapid combustion duration and the total combustion duration show less variation with DMC addition. Brake specific fuel consumption (BSFC) increases while diesel equivalent BSFC decreases and thermal efficiency increase with the increase of DMC addition. CO and smoke decrease with increase of DMC addition, and N0_x. does not increase with the increase of DMC.