VNT改善柴油机低速性能的试验研究  

Experimental Research on VNT Improving Diesel Engine Low-speed Performance

作　　者：王天灵[1] 郭鹏江[2] 吴君华[1] 李德刚[1] 

机构地区：[1]吉林大学汽车工程学院,吉林长春130025 [2]大连理工大学内燃机研究所,辽宁大连116023

出　　处：《车用发动机》2009年第4期76-79,共4页Vehicle Engine

摘　　要：在498柴油机上匹配了可变喷嘴涡轮增压器(VNT),研究其对直喷柴油机性能的影响。试验结果表明,VNT能增加低速扭矩,改善低速时的燃油经济性,降低柴油机低速的冒烟极限和烟度,改善柴油机低速时的加速特性。The variable nozzle turbocharger （VNT） was matched with 498 diesel engine and its influence on DI diesel engine performance was researched. The experimental results show that the VNT can increase the torque, improve the fuel economy, decrease the smoke limit and improve the acceleration performance at low speed.

关 键 词：可变喷嘴涡轮增压器 匹配 柴油机 低速性能 

分 类 号：TK421.5[动力工程及工程热物理—动力机械及工程]