Abstract
The effects of each reaction stage (low-temperature reaction, high-temperature reaction and post-combustion) of a homogeneous mixture (propane/air) on the ignition and combustion of a diesel spray were investigated using a rapid compression machine (RCM). The concentrations of formaldehyde (HCHO) and hydrogen peroxide (H2O2) were calculated in the low-temperature reaction using CHEMKIN. The correlation between soot formation and fuel injection timing was investigated in each reaction stage of the homogeneous mixture. When diesel fuel was injected during the low-temperature reactions, soot formation was more restrained than at any other reaction stage of the homogeneous mixture.

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