柴油引燃预混天然气准均质压燃着火过程的研究

Study on HCCI of Pre-Mixed Natural Gas Ignited by Pilot Diesel

利用高速摄像技术对柴油引燃预混天然气发动机的着火过程进行了研究,主要分析了混合气浓度、喷油提前角以及环境温度等参数对双燃料发动机着火滞燃期、着火点位置分布和着火点数量的影响,指出柴油引燃预混天然气双燃料发动机着火过程是一种准均质压燃着火过程。

The ignition processes of premixed natural gas charge ignited by pilot diesel were investigated on an optional engine by the technology of highspeed CCD. The delay of ignition, location and distribution of ignition occurrence and the number of ignition as well as the related factors were analyzed from the testing results of the dualfuel engine. The analysis results illustrated that the ignition and burning process of pre-mixed natural gas ignited by pilot diesel taking place in dual fuel engine was a process of homogenous charge compression ignition.