崔明辉

(东平县公路局，山东 东平 271500)

　　摘要：本文围绕发动机可变配气相位技术展开，依据GT-Power软件对汽油机进行建模。在模型中通过对配气相位角度进行组合，在不同工况下输出不同角度下的汽油机的功率、扭矩、油耗、充量系数参数，进行比较，选择出不同工况下的最优配气相位。

　　关键词：汽油机；配气相位；优化设计；GT-Power

　　Abstract：This paper discussed the engine variable valve timing technology and built the gasoline engine modeling  basing on GT-Power software. Considering  the timing phase angles, we compared the power, torque, fuel consumption and charging coefficient that the engine produced  under different conditions  and selected the optimal timing phase.

　　Keywords：Gasoline Engine；Timing Phase；Optimal Design；GT-Power