喷油压力和提前角对柴油机排放影响的试验研究

李龙¹，庞振龙²，张宁¹，穆振仟²，孙镇¹

1.淄柴机器有限公司,山东 淄博  255000;2.淄柴动力有限公司,山东 淄博  255000

摘要：为降低船舶柴油机排放，以某船用四冲程中速柴油机为研究对象，通过改变发动机的喷油压力和供油提前角，进行多组对比试验，研究喷油压力和供油提前角对CO、NO_x和PM排放的影响。试验结果表明：随着喷油压力的增加，尾气中CO和PM的质量分数降低，NO_x的质量分数小幅增加；随着供油提前角的减小，尾气中NOx的质量分数显著降低，CO和PM的质量分数整体上升。

关键词：排放性能；喷油压力；供油提前角；排放物

Experimental study on effect of fuel injection pressure and advance angle on diesel engine emission

LI Long¹，PANG Zhenlong²，ZHANG Ning¹，MU Zhenqian²，SUN Zhen¹

1. Zichai Machines Co.，Ltd.，Zibo 255000，China；2. Zichai Power Co.，Ltd.，Zibo 255000，China

Abstract：In order to reduce the emission of marine diesel engine, a four stroke medium speed diesel engine is taken as the research object. By changing the fuel injection pressure and fuel injection advance angle of the engine, several groups of comparative tests are carried out to study the effects of fuel injection pressure and fuel injection advance angle on CO, NO_x and PM emissions. The results show that the mass fraction of CO and PM in exhaust gas decreases and the mass fraction of NO_x increases slightly with the increase of injection pressure. With the decrease of fuel supply advance angle, the mass fraction of NOx in exhaust gas decreases significantly, and the mass fraction of CO and PM increases.

Keywords:emission performance；fuel injection pressure；fuel supply angle；emissions