【摘要】 人们发现 ,一些满足排放法规的车用柴油机投入使用后 ,在寒冷地区起动困难 ,而且起动后排气管冒浓白烟 ,这不仅给用户带来不便 ,还污染环境 ,成为低排放车用柴油机需要解决的一个问题。本文介绍了解决这一问题所进行的试验研究工作。研究结果表明 ,过小的供油提前角是造成这个问题的主要因素 ,加大起动时的供油提前角是解决问题的关键更多还原

【Abstract】 In order to meet the emission regulations for vehicle diesel engines, sometimes it is difficult to start the engines in chilly area. Another problem is that the engines emit the white smoke which would pollute the environment. Therefore it is necessary to improve the cold start performance for vehicle diesel engines with low emission. This paper describes the experimental results on how to improve the engine cold start performance. The results show that it is because of the later injection timing, and advancing the injection timing can improve the cold start performance.更多还原