Optimal research on intake initial condition of high density-low temperature diesel combustion based on multiple index

This paper studies the influence of intake initial conditions on high density low temperature diesel performance with simulation analysis of software FIRE and orthogonal test method. We perform simulation on the 4100 diesel, and the result shows that, the most notable influence on the comprehensive performance of diesel is EGR, followed by the intake pressure, and the third is the intake temperature. High density low temperature combustion mode can reduce emission and improve thermal efficiency under the condition that EGR is 0.1, intake pressure is 2.9 bar, and intake temperature is 20°C.