【摘要】 利用快速压缩机研究了混合气浓度和进气温度对异辛烷均质压燃燃烧特性的影响。试验表明:随着进气温度的升高,燃烧始点提前,燃烧持续期缩短,最高燃烧温度升高,最大燃烧放热率增加,最大压力升高率增大,最大压力升高率出现时刻提前;随着可燃混合气过量空气系数的增加,燃烧始点延迟,着火温度升高,燃料的最高燃烧温度降低,最大放热率降低,最大压力升高率降低,最大压力升高率出现时刻延迟,燃烧持续期增加。更多还原

【Abstract】 The effects of the fuel-air ratio of the combustible mixture and the intake temperature on the homogeneous charge compression ignition(HCCI) combustion behavior were studied on a rapid compression machine.The experiment results indicate that with the increase of the intake temperature,the ignition timing advances,the combustion duration decreases,the maximum combustion temperature rises,the maximum heat release rate increases,the maximum pressure rise rate becomes higher and its corresponding timing advances.With the increase of the excess air ratio of the combustible mixture,the start of combustion delays,the ignition temperature increases,the maximum combustion temperature decreases,the combustion duration increases,the maximum heat release rate decreases,the maximum pressure rise rate becomes lower and its corresponding timing delays.更多还原