王浒，张弟平，董芳，杨勇，刘馨璐，刘海峰.汽油替代物组分对缸内直喷和进气道喷射汽车性能影响的试验研究[J].内燃机工程,2019,40(1):57-64.
汽油替代物组分对缸内直喷和进气道喷射汽车性能影响的试验研究
Experimental Study of Effect of Gasoline Surrogate Components on Performance of GDI and PFI Vehicles
DOI：10.13949/j.cnki.nrjgc.2019.01.009
关键词:汽油组分  排放  底盘测功机  汽车性能
Key Words:gasoline composition  emission  chassis dynamometer  vehicle performance
基金项目:国家自然科学基金项目（51506145，91541111）
作者单位
王浒，张弟平，董芳，杨勇，刘馨璐，刘海峰 1.天津大学 内燃机燃烧学国家重点实验室，天津 300072； 2.中国石化销售有限公司油品技术研究所，天津 300384 
摘要点击次数: 2872
全文下载次数: 1755
摘要:采用3种研究法辛烷值相同的汽油替代物在一辆缸内直喷（gasoline direction injection, GDI）和进气道喷射（port fuel injection, PFI）汽车上研究了不同汽油替代物组分对整车性能的影响。试验结果表明：相比异辛烷，添加甲苯会导致CO2排放升高，而添加二异丁烯会降低CO2排放，甲苯和二异丁烯均使体积油耗降低。添加二异丁烯和甲苯使GDI汽车的CO排放升高并使THC排放降低，使PFI汽车新欧洲驾驶循环（new European drive cycle, NEDC）前100 s的瞬态CO和THC排放升高。二异丁烯会使NOx排放降低而甲苯会导致NOx排放升高。在颗粒排放方面，添加甲苯使GDI汽车排放的颗粒物质量（particle mass, PM）和数量（particle number, PN）增加，添加二异丁烯会降低GDI汽车PM和PN排放；添加甲苯和二异丁烯会降低PFI汽车的PM排放，但会导致其PN增加。在加速性能方面，二异丁烯和甲苯的加入会缩短GDI汽车的加速时间，而甲苯会使PFI汽车的加速时间增加。
Abstract:The effect of different gasoline surrogate components on vehicle performance was investigated in an in-cylinder direct injection vehicle and a port injection vehicle respectively. Three gasoline surrogates with same octane number, including n-heptane/iso-octane, n-heptane/iso-octane/toluene and n-heptane/iso-octane/diisobutylene blends, were used during the test. Test results show that the addition of toluene leads to an increase in CO2 emissions, while the use of diisobutylene shows an opposite trend. However, both of them reduce fuel consumption. At the same time, the addition of either of them increases CO emissions from the in-cylinder direct injection vehicle coupled to the reduction of THC emissions, and it increases the transient CO and THC emissions from the port injection vehicle during the first 100 s of the New European Driving Cycle. In addition, the use of diisobutylene causes NOx emissions to decrease, while toluene increases NOx emissions. In terms of particulate matter emissions, the addition of toluene increases particulate mass and particle number emissions from the in-cylinder direct injection vehicle, and the use of diisobutylene produces exactly an opposite result. Although adding toluene or diisobutylene reduces particulate mass emissions from the port injection vehicle, it leads to an increase in particle number emissions. As for acceleration performance, adding toluene or diisobutylene shortens the acceleration time of the in-cylinder direct injection vehicle, but using toluene will increase the acceleration time of the port injection vehicle.
查看全文  HTML   查看/发表评论