本文着重分析对于直喷式柴油机,为确保喷入气缸中的燃油能在燃烧室中充分微粒化,并与空气充分混合、均匀分布在整个燃烧室中所必需的油束能量和空气涡流的能量,并论述不同混合气形成方法所必需的油束能量。在上述分析的基础上,提出简单可行的计算方法,以确定喷油系统,进气系统、燃烧室形状等有关参数。 This paper focuses on the analysis of direct injection diesel engine, in order to ensure that injected into the cylinder fuel can be fully micronized in the combustion chamber, and fully mixed with air, evenly distributed in the combustion chamber necessary for the energy of the fuel bundle and air vortex , And discusses the energy of the oil bundles necessary for the different mixture formation methods. On the basis of the above analysis, a simple and feasible calculation method is proposed to determine the relevant parameters such as fuel injection system, intake system and combustion chamber shape.