欧Ⅳ轿车柴油机关键参数优化与匹配试验研究  

Experimental Study on Optimizing and Matching of Key Parameters of Euro Ⅳ Diesel Engine for Passenger Car

作　　者：周岳康[1,2] 韩文艳[1,3] 董尧清[1] 李伟军[2] 

机构地区：[1]同济大学,上海201804 [2]上海汽车技术中心,上海201804 [3]中北大学,太原030051

出　　处：《内燃机工程》2009年第6期61-66,共6页Chinese Internal Combustion Engine Engineering

摘　　要：在一款标定功率74 kW、配置电控分配泵的欧Ⅲ柴油机基础上,通过采用第二代高压共轨(160 MPa)燃油喷射装置、可变喷嘴截面涡轮增压器(VNT)等技术,并对关键零部件的局部结构设计予以优化改进。对喷油嘴伸出量(NTP)、喷油嘴流量、涡流比和涡轮增压器进行了综合性能匹配试验。结果表明,改进后的柴油机标定功率提升至98.2 kW,排放满足欧Ⅳ法规,并且加装颗粒捕集器(DPF)后,具备从欧Ⅳ进一步升级至欧Ⅴ的潜能。For a rated power 74kW, Euro Ⅲ prototype diesel engine equipped with electric distribution pump, the design of local structure for key parts was optimized and improved by using the second generation high-pressure （160 MPa） common rail fuel injection device, variable nozzle geometry turbocharger （VNT） and other technology. The integrated performance matching experiment for nozzle tip protrusion（NTP）, nozzle flow rate, swirl ratio and turbocharger was performed. The results show that the rated power of improved diesel engine can promote to 98.2 kW, emission level can meet Euro Ⅳ emission standard, and it has a potential for further upgrade to Euro Ⅴ when the diesel particle filter （DPF） is used.

关 键 词：内燃机 轿车柴油机 性能试验 欧Ⅳ 欧Ⅴ 排放 

分 类 号：TK427[动力工程及工程热物理—动力机械及工程]