一、前言小排量增压汽油机代表了省油发动机的发展方向。较小排量的增压发动机可代替具有类似功率特性曲线的较大排量发动机。这样代用能获得显著的节油效果,因为在相同功率情况下,较小排量的增压发动机平均有效压力比较高。因此,改善了发动机比油耗,尤其当它在部分载荷运行时更是如此。 First, the preface Small displacement supercharged gasoline engine represents the development direction of fuel-efficient engines. A smaller displacement supercharged engine can replace a larger displacement engine with a similar power profile. This alternative can achieve significant fuel economy, because the same power conditions, smaller displacement supercharged engine average effective pressure is relatively high. As a result, engine fuel economy is improved, especially when it is operating at part load.