不同大气压力下掺烧10%体积含量生物柴油对共轨柴油机燃烧和排放的影响  

Effect of Biodiesel/Diesel Blend Fuel on Combustion and Emission Characteristics of Common Rail Diesel Engine under Different Atmospheric Pressures

作　　者：王博[1] 颜文胜[1] 申江卫[1] 陈泓[2] 吴哲[1] 叶明 

机构地区：[1]昆明理工大学交通工程学院,昆明650224 [2]同济大学汽车学院,上海201804 [3]昆明市科技局,昆明650500

出　　处：《内燃机工程》2013年第4期58-63,共6页Chinese Internal Combustion Engine Engineering

基　　金：国家自然科学基金资助项目(50866002)

摘　　要：对高压共轨柴油机在不同大气压力下掺烧10%体积含量生物柴油(B10)和石化柴油的燃烧和排放特性进行了试验研究。试验结果表明:外特性工况下,与原机相比,3 200r/min和1 200r/min时B10的最高燃烧压力、峰值压升率略低,峰值放热率略高;2 200r/min时B10的最高燃烧压力、峰值压升率和放热率均略高;HC和CO排放均降低;大气压力81kPa时B10的NOx排放降低1.2%～10.0%,碳烟减少4.8%～20.4%,大气压力100kPa时NOx排放增加1.0%～4.3%,碳烟减少6.2%～16.8%。等功率工况下,与原机相比,B10的最高燃烧压力、峰值压升率和放热率略高,碳烟和NOx排放有不同程度的降低。外特性工况下,与大气压力81kPa时相比,100kPa下原机和B10的最高燃烧压力、峰值压升率和放热率均略高;NOx排放增加12.0%～369.2%,碳烟减少23.2%～34.6%。等功率工况下,与大气压力81kPa时相比,100kPa下原机和B10的最高燃烧压力、峰值压升率和放热率均略高,NOx排放增加14.5%～330.7%,低转速的增加幅度较大,碳烟减少4.6%～74.4%,HC和CO排放均增加。关键词:内燃机;高压共轨柴油机;生物柴油;燃烧;不同大气压力;To examine changes in combustion and emission characteristics of high pressure common rail diesel engine fueled with B10（added 10% （in volume）biodiesel）compared to that when fueled with pure diesel （i. e. the original engine）in different atmospheric pressure, actual engine tests were conducted. It is concluded that on the full-load speed characteristics for B10, max. combustion pressure, peak pressure rise rate descend and peak heat release rate increases slightly at 3 200 r/min and 1 200 r/min;max, combustion pressure, peak pressure rise rate and heat release rate increase a bit and HC,CO emissions decrease at 2 200 r/rain;at 81 kPa, NOx emissions decrease 1.2%-10.0% ,smoke decreases 4.8%-20.4%; at 100 kPa,NO- emissions increase 1.0%-4.3% ,smoke decreases 6.2%-16.8%. In constant power condition,max, combustion pressure,peak pressure rise rate and heat release rate increases a little, smoke and NOx emissions decrease in different degrees for B10. On the full-load speed characteristics, compared to 81 kPa, max. combustion pressure, peak pressure rise rate and heat release rate of both increase slightly at 100 kPa,NO- emissions increase 12.0%- 369.2%, smoke decreases 23. 2% - 34. 6%. In constant power condition, compared with 81 kPa, max. combustion pressure,peak pressure rise rate and heat release rate of both increase slightly, NOx emissions increase 14.5%-330.7% ,the magnitude in low speed region is bigger,smoke decreases 4.6%-74.4%,HC and CO emissions increase at 100 kPa.

关 键 词：内燃机 高压共轨柴油机 生物柴油 燃烧 不同大气压力 排放 

分 类 号：TK402[动力工程及工程热物理—动力机械及工程]