供油提前角对柴油/乙醇发动机经济性和排放特性的影响  

The Influence of Fuel Supply Advance Angle on the Economy and Emission Characteristics of Diesel-Ethanol Engine

作　　者：肖阳[1] 徐斌[1] 吴健[1] 马志豪[1] 王站成[1] 鲍学锋[1] 潘永方[1] 王鑫[1] 

机构地区：[1]河南科技大学车辆与动力工程学院,河南洛阳471003

出　　处：《柴油机》2010年第1期31-35,共5页Diesel Engine

基　　金：河南省科技攻关计划项目(0524260048);洛阳市科技发展计划项目(0701026A)

摘　　要：在YTR3105试验机上,在最大扭矩转速1 500 r/min(扭矩192 N.m)和标定转速2 400 r/min(扭矩164N.m)两个工况下进行了不同供油提前角和不同配比柴油/乙醇混合燃料发动机的经济性与排放特性试验。结果表明:柴油/乙醇发动机的有效燃油消耗率较柴油机的有所升高,但能量消耗率有所下降;随着供油提前角增大,碳烟排放明显降低,但NOx排放明显升高,CO和THC排放均降低;随着乙醇含量的加大,在转速1 500 r/min时,CO排放增大,在转速2 400 r/min时,CO排放降低,而THC排放在两个工况下均有所增大。Experiments are carried out on YTR3105 test engine to study its economy and emission characteristics when choosing different fuel supply advance angles and different diesel-ethanol mixing ratios, and at engine speed of i 500 r/min （maximum torque 192 N-m） and 2 400 r/min （nominal speed, torque 164 N-m）. Experimental results show that diesel-ethanol engine features increased brake specific fuel consumption and decreased brake specific energy consumption. With the increasing of fuel supply advance angle, soot emission decreased but NOx emission increased obvisionly, both CO and THC emissions decreased. With the increase of ethanol ratio, CO emission increased at engine speed of 1 500 r/min, but decreased at engine speed of 2 400 r/min. THC emission increased under both conditions.

关 键 词：供油提前角 柴油/乙醇 经济性 排放特性 

分 类 号：TK46[动力工程及工程热物理—动力机械及工程]