电动补气策略对废气涡轮增压柴油机加速烟度影响的试验研究  

Effect of Electric-controlled Air Supplement Strategy on Smoke of Turbocharged Diesel Engine during Accelerating Process

作　　者：霍育强 周斌[1] 张钊[1,2] 杨洁[1] 李文秀[1] 曲磊[1] 邱伟[1] 

机构地区：[1]西南交通大学机械工程学院,四川成都610097 [2]四川托普信息技术职业学院,四川成都611743

出　　处：《车用发动机》2016年第4期33-37,共5页Vehicle Engine

基　　金：西南交通大学大学生科研训练计划国家创新训练项目(201510613033)

摘　　要：通过改变柴油机的加速时间及负荷进行试验,对比电动补气不同策略对加速烟度的影响。结果表明:由1 400r/min,50N·m加速加载到2 500r/min,100N·m,加速时间为12s,通过采用电动增压器并改变相关补气策略,使原机的最大峰值烟度由0.602m^(-1)降至0.420m^(-1),降幅30.2%;上述加速加载过程中,在无初始补气量的情况下,电动增压器的最终频率越高越好,且采用直线型响应曲线比采用S型响应曲线的烟度低;在有一定初始补气量的情况下,电动增压器理想补气方式为先缓后急。The effects of different electric-controlled air supplement strategies on smoke during acceleration were compared through the experiment by changing acceleration time and bearing load of diesel engine. The results show that it costs 12 s when the engine switches from the conditions of 1 400 r/min and 50 N · m to 2 500 r/min and 100 N ·m, and the peak smoke of original engine decreases to 0. 420 m^-1 from 0. 602 m^-1 （about 30. 2% decrease） by adjusting the related air supplement strategy with the electric supercharger. Under the condition of initial air non-supplement, the high final frequency of electric supercharger was helpful to reduce the soot and the linear type response curve was easier to lead to a low smoke than S-typed response curve. While under the condition of certain initial air supplement, the ideal air supplement strategy should be slow first and then fast.

关 键 词：电动增压器 涡轮增压器 柴油机 瞬态 烟度 

分 类 号：TK421.5[动力工程及工程热物理—动力机械及工程]