燃烧室优化

Optimizing for piston combustion crown

提升现有发动机性能,对不同顶面形状的活塞燃烧室的进气及燃烧过程进行多维数值模拟分析。通过对缸内气体当量均匀性、湍动能场、气体平均速度、燃烧持续期等缸内燃烧特征参数的影响确定优化方案。其结果证明,合理改善燃烧室形状可以有效改善发动机燃烧性能。

To promote the engine performance, there was used numerical simulation to study the engine combustion with different piston combustion crown. The optimized design was confirmed by the combustion characteristic parameters such as Eq ratio uniformity,turbulence kinetic Energy,mean velocity,burn duration ratio. The result confirmed that reasonable improved the geometry of piston crown could promote the combustion performance.