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汽油缸内直喷已成为新一代汽油机提高经济性、降低排放的重要手段 .在这种新型燃烧方式中 ,喷雾过程是重要的影响因素 .文中以一台家用轿车三缸发动机为对象 ,进行缸内过程的三维模拟计算 .就喷油参数对汽油缸内直喷的影响进行了分析 ,研究了喷油定时与喷油角度的作用 .结果表明 ,选择适当的喷雾参数对缸内混合气的形成、燃烧的组织等具有重要意义
In-cylinder direct injection has become a new generation of gasoline engines to improve economy and reduce emissions an important means.In this new combustion mode, the spray process is an important factor.In this paper, a domestic car three-cylinder engine as the object, the cylinder The three-dimensional simulation of internal process was carried out.The effect of injection parameters on direct injection in gasoline cylinder was analyzed and the effect of injection timing and injection angle was studied.The results showed that the choice of proper spray parameters for the formation of in-cylinder mixture , Burning organizations, etc. is of great significance