The cylinder peak pressure of the 40LFPO10DMC + IJP is found to be the highest in this study and 3.7% higher than that of diesel fuel, and 7.73% higher than that of the 40LFPO blend at full load. The reason may be that 40LFPO10DMC + IJP has a higher heat release rate by homogenous air fuel mixture and better fuel atomization by turbulence air motion of internal jets.