中文摘要：

在均质充量压燃着火（HCCI）条件下，对构建的柴油替代燃料化学动力学模型，应用CHEMKIN软件闭式均相反应器模块研究了柴油替代燃料中甲苯的存在以及在不同初始温度下甲苯的含量对柴油替代燃料着火延迟时间的影响，结果表明：柴油替代燃料的着火特性主要由正庚烷来控制，而柴油替代燃料中甲苯缓慢的氧化对着火特性影响不大。在较低的初始温度下，甲苯的含量对着火时间的影响是明显的。随着甲苯含量的增加，更多的着火延迟过程会出现。

英文摘要：

The purpose of this paper is to identify the effects of toluene and the toluene content which is at different initial temperatures on the ignition delay time of diesel surrogate fuel under homogeneous charge compression ignition （HCCI） engine condition. The CHEMKIN4.1 module （closed homogeneous batch reactor） is used with the constructed diesel surrogate fuel chemical kinetics model to simulate the constant volume. The results show that the ignition property is mainly characterized by n-heptane. The presence of the slowly oxidizing toluene in the surrogate fuel does not affect the auto-ignition time considerably. In addition, the influence of toluene content on the ignition delay time is significant only at low initial temperature, More ignition delayed combustion processes have been found when toluene content is increasing.