【摘要】 对具有不同性能参数的进气道与柴油机性能指标间的关系进行了回归分析，研究表明：高速直喷式柴油机的性能指标与进气道的综合性能系数的关系最密切；在涡流比和流量系数两者中，前者与整机性能指标关系较密切；紊流型燃烧系统中国引发复杂素流场，气缸内空气动量耗散作用大，故需较大的进气涡流比。更多还原

【Abstract】 The authors have studied relationship between the inlet ports with different properties and the performances of a diesel engine by regression analysis. The results indicate that the relationship of the performances of high speed DI diesel engine with the synthetic performance coefficient of the inlet port is the closest, while the relationship of the engine performances with the swirl ratio is closer than that with the flow coefficient. The large inlet swirl ratio is needed by the turbulence-type combustion system because it can induce the complex turbulent flow field and increase the air momentum consumption,更多还原