配气定时对柴油机性能影响的数值模拟分析

Numerical Simulation and Analysis of Influence of Valve Timing on Diesel Engine Performances

利用GT-POWER软件研究了进排气门正时对柴油机性能的影响。在柴油机高中低三种转速工况下,分别对进气门关闭角度、排气门开启角度以及气门重叠角进行了计算和分析,得到了不同工况下的最佳值。计算结果为柴油机的改进、优化提供了依据。

The effects of valve timing on diesel engine performance were investigated using GT-POWER code. At different operating conditions from high speed to low speed, the different timing of intake close and exhaust open, valve overlap were calculated and anyalyzed. At different engine speeds ,different optimum combinations exist. The calculation results can provide theoretic guidance for optimal designs of diesel engines.