【摘要】 介绍了快速混合燃烧过程采用较小柱塞直径、较大行程的НТД４０ 喷油泵，提高进气涡流转速和排气道流通系数，配合喷油提前角及进气压力参数的合理匹配，初步实现了高热效率、低爆压和低粗暴度的性能指标。通过 Ａ Ｖ Ｌ６５７ 数字采集分析系统的测量，分析了改进后的燃烧系统。喷油提前角和进气压力的合理匹配降低了爆压；较小柱塞喷油泵的采用，减小了速燃期的放热速度，从而获得较小的工作粗暴度；提高涡流转速保证了快速混合燃烧过程的实现，从而获得高的热效率。更多还原

【Abstract】 This paper introduced a fast mixing combustion (FMC) process characterized by the application of НТД 40 injection pump with smaller diameter and larger stroke plunger,increment of swirl revolution and discharge coefficient of exhaust port,and reasonable match of injection timing and inlet air parameters.The performance of high thermal efficiency,low maximum combustion pressure and low combustion roughness is obtained on the engine with FMC process.The preliminary analysis for improved combustion system have been made on the basis of the measurement of its parameters.Reasonable match of injection timing with inlet air pressure reduces maximum combustion pressure.An utilization of injection pump with small diameter plunger reduces heat release rate during the fast combustion period and obtains lower combustion roughness.An increment of swirl revolution ensures FMC process to occur and obtained high termal efficiency.更多还原