关键词: 动力机械工程, 甲醇, 均质充气压缩点燃, 燃烧特性, 进气温度, 快速压缩机

Abstract: With the emerging of the alternative fuel and the new combustion mode of the internal combustion engine, it is necessary to study its combustion mechanism and characteristics. The process of methanol homogeneous charge compression ignition(HCCI) combustion was simulated experimentally using a rapid compression machine(RCM). The influence of the intake charge temperature on methanol HCCI combustion characteristics was investigated by analyzing the histories of the incylinder pressure and the piston displacement in the RCM. The results show that with the increase of the charge temperature, the ignition of methanol occurs earlier and earlier, the pressure rise rate and the peak heat release rate increase, and the combustion duration decreases correspondingly.

Key words: power and machinery engineering, methanol, homogeneous charge compression ignition (HCCI), combustion characteristics, intake temperature, rapid compression machine(RCM)