拟闭式循环柴油机着火过程的研究

Investigations on Autoignition Process Under Closed-Cycle Diesel Engine Like Conditions

简要分析了以“人造大气”工作的闭式循环柴油机所需解决的技术问题和理论问题。针对发动机工作过程的特点，着重就工质成分对拟闭式循环柴油机自然着火过程的影响进行了实验和研究。结果表明，添加氩气有助于缩短冷焰和热焰诱导期，而工质中CO2浓度的增加则会延长冷、热熔诱导期；在着火滞燃期随工质成分而变化的趋势上，理论计算与实验测量基本相吻合。

This paper outlines several technological and theoretial problems on closed-cycle diesel engines. The effects of the composition and temperature of the working gas on the autoigniti on process have been investigated through the obselvations of the process of compression ignition and its simulating computation. It is concluded that the addition of argon makcs the ignition delay usually shorter, while the carbon dioxide dilution makes it longer due to the increase of mixture heat capacity. As far as the effects of the composition and temperature of tke working gas on the ignition delay,fairly good agreement between the calculated results and the experimental data is obtained.