掺氢高压共轨柴油机怠速性能试验研究

Experimental investigation on idling performance of hydrogen-doped high-pressure common-rail diesel engine

在发动机怠速条件下,研究了掺氢对高压共轨柴油机燃烧与排放特性的影响。试验结果表明,掺氢使得柴油机缸内平均峰值温度降低,而排气门开启时刻缸内温度升高,且HC、CO和NOx排放明显降低。同时,掺氢后柴油机颗粒物排放也得到明显改善。

The effect of hydrogen doping on combustion and emission characteristics of high-pressure common-rail diesel engine is investigated under the idling condition.The test results show that the average peak temperature in diesel engine cylinder decreases with the addition of hydrogen while the temperature in cylinder increasing at the opening time of exhaust valve and the emissions of HC,CO and NOx decreasing obviously.At the same time,the emission of particulate matter from diesel engine decreases obviously.