摘要
在发动机排放试验台上,对一台天然气发动机按照国六排放标准和国五排放标准分别进行了WHTC循环试验和ETC循环试验,进行了气体污染物排放的比较研究。结果表明,WHTC循环条件下,冷启动试验的CH_4和NO_x排放高于热启动试验,NH_3排放低于热启动试验。冷启动试验的CH_4、NO_x排放量占冷+热加权试验结果的比重分别为47.10%和48.92%,与WHTC循环冷启动+热启动试验加权结果相比,ETC循环试验的CH_4和NO_x排放有显著的下降,NH_3排放有一定的增加。
On the engine emission test bench,a natural gas engine was subjected to the WHTC cycle test and the ETC cycle test according to the CHINA VI and CHINA V Emission Standards respectively,and the comparative study of gaseous pollutants emission was carried out. The results show that the CH4 and NOx emissions over the cold WHTC cycle are higher than those over the hot WHTC cycle;however,the cold start emission of NH3 is lower than the hot start. The CH4 and NOx emissions in the cold start test accounted for 47.10% and 48.92% of the cold and hot state weighted test results respectively. Compared with the weighted results of the WHTC cycle from cold and hot start test,for the ETC cycle test a significant decrease in the CH4 and NOx emissions occurs and there is a certain increase in NH3 emissions.
作者
袁卫波
陈本林
王舒
王国华
姚飏
葛晓成
YUAN Weibo;CHEN Benlin;WANG Shu;WANG Guohua;YAO Yang;GE Xiaocheng(Chongqing CAERI Power Technology Co.,Ltd,Chongqing 401122,China;The State Key Laboratory of Mechanical Transmission,Chongqing University,Chongqing 400044,China)
出处
《汽车工程学报》
2019年第3期193-200,共8页
Chinese Journal of Automotive Engineering
基金
重庆市科学技术委员会重点产业共性关键技术创新专项(cstc2017zdcy-zdyfX0097)
关键词
国六排放
天然气发动机
当量比燃烧
三元催化器
China Ⅵ emissions
natural gas engine
stoichiometric combustion
three way catalysts
