摘要
在WP10柴油机上进行了基于原机动力性的柴油-天然气双燃料发动机万有特性标定试验,结果表明燃用双燃料可有效节省燃料费用。通过ESC试验验证了双燃料发动机的排放性能。由于采用预混稀燃技术,双燃料发动机的NOx排放与燃用柴油时相比有很大降低,而稀燃造成燃烧温度较低,加之壁面淬熄效应以及掺烧时燃烧室狭缝内的未燃天然气,使得THC与CO排放有明显增加,在发动机后加装氧化催化器(DOC)可以明显降低THC与CO的排放。
Based on the power performance of WP10 diesel engine, the universal performance calibration experiments of diesel/CNG dual fuel engine were conducted. The results showed that the dual fuel engine could save fuel effectively. The e mission performance of dual fuel engine was also verified by ESC test. The application of premixed lean-burn technology in dual fuel engine reduced NOx emission greatly. The low temperature caused by lean-burn combustion, wall quenching effect and un burned CNG in chamber gap resulted in significant increase of THC and CO emission, which could be improved greatly by mounting DOC.
出处
《车用发动机》
北大核心
2013年第6期57-61,共5页
Vehicle Engine
基金
国家"863"计划项目(2013AA065303)
关键词
柴油
天然气
混合燃料
经济性
排放
diesel
compressed natural gas（CNG）
blended fuel
fuel economy
emission
