醇类汽油混合燃料发动机排放性能试验研究

Experimental Research on Emissions Performance of Gasoline Engine Using Alcohol Fuel

不做任何改动或优化调整的情况下，在一台六缸汽油机上对不同比例的醇类汽油混合燃料和纯汽油的排放性能进行对比试验研究。研究结果表明，与纯汽油相比，怠速时，M25的HC排放平均增加50％．M10、E10的HC排放分别平均降低1％、55％；M10、M25、E10的CO排放分别平均降低60％、50％、66％；M10、M25、E10的NO，排放分别平均降低60％、80％、21％。1800r／min负荷特性下，M25、E10的HC排放分别平均增加81％、60％，M10的HC排放平均降低63％：M10、M25、E10的CO排放分别平均降低48％、29％、46％；M10、M25、E10的NOx排放分别平均降低4％、17％、3％。转速为1400。3000r／min的外特性下，M25、E10的HC排放分别平均增加65％、45％，M10的HC排放平均下降80％；M10、M25、E10的CO排放分别平均下降56％、80％、44％；M10、M25、E10的NO，排放分别平均增加1％、12％、9％。

With the premise of no any alteration or optimization adjustment on the engine, emission experiments of pure gasoline and mixture fuels with different volume ratio alcohol fuel and gasoline were done on a six-cylin- der gasoline engine. Results indicate that compared with pure gasoline, at idle operating modes HC emissions of M25 averagely increases 50%, HC emissions of M10 and El0 averagely decrease 1% and 55% respectively; CO emissions of M10, M25 and El0 averagely decrease 60%, 50% and 66% respectively; NOx emissions of M10, M25 and El0 averagely decrease 60%,80% and 21% respectively. At 1800 r/min HC emissions of M25 and El0 averagely increase 81% and 60% respectively, HC emissions of M10 averagely decreases 63%; CO emissions of M10,M25 and El0 averagely decrease 48%,29% and 46% respectively; NOx emissions of MIO, M25 and El0 averagely decrease 4% ,17% and 3% respectively. At 1400-3000 r/min of external characteristic HC emissions of M25 and EIO averagely increase 65% and 45% respectively, HC emissions of M10 averagely decreases 80%, CO emissions of M10, M25 and El0 averagely decrease 56%, 80% and 44% respectively ; NOx emissions of Ml0, M25 and EIO averagely increase 1%,12% and 9% respectively.