喷油过程参数对极端环境条件下柴油机性能影响的仿真分析

采用一维仿真分析软件GT—SUITE对一台直喷式柴油机进行了整机模拟计算，分析了在极端环境温度和极端环境压力条件下该柴油机的经济性、动力性和排放性能参数的变化情况。根据分析结果对柴油机在极端环境工况条件下运行时的喷油过程参数做优化调整。仿真结果表明，在极端高温条件下，通过调整喷油过程参数可使柴油机动力性、经济性能参数与...

Simulation Analysis of Injection Procedure Parameters on Diesel Engine Performances under Extreme Environment

One direct-injection diesel engine was simulated by one-dimensional software GT-SUITE. Its fuel economy, dynamic performance and emission parameters under extreme temperature or pressure environment were analyzed. According to the analysis results, the injection procedure parameters of diesel engine under extreme environment were optimized. Simulation results show that by adjusting injection parameters, the dynamical performance and fuel economy remains nearly the same under extreme high temperature condition as under common temperature environment, and emission parameters are improved to some degree. Under extreme low pressure condition, fuel economy and emission behavior of the diesel engine can be improved more or less by appropriately advancing injection angle and decreasing injection quantity.