摘要
对压缩点火均质混和气燃烧(CIHC燃烧)与内燃机的压缩比、转速、充气温度、混和气浓度、充量系数等运行参数之间的关系进行了系统的试验研究,指出如果运行参数选择合适,则压缩点火均质混和气燃烧在内燃机上可以实现,并给出理想的运行参数范围。利用化学动力学分析CIHC燃烧的机理,对其点火和放热过程进行描述和归纳,并介绍了一种计算CIHC燃烧平均放热速率的半经验公式。
A systemetic research was carried out to reveal the relationship between theCompression-Ignited Homogeneous Charge(CIHC) combustion and the operatinparameters such as compression ratio, engine speed, intake temperature, delivery ratioand equivalence ratio. It has deen indicated that throngh the proper use of ope-rating parameters the CIHC combustion can be established practically,and therange of satisfactorily operating parameters was provided. The ignition and heat release process of CIHC combustion have been explainedtheoriticaly in terms of known chemical kinetics and applied combustion,a semi-empirical heat release equation which can be adopted for CIHC combustion wasdeveloped.
关键词
CIHC燃烧
放热速率
化学动力学
compression--ignited homogeneous charge
heat release rate
chemical kinetics
