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| Experimental Study of Effect of Gasoline Surrogate Components on Performance of GDI and PFI Vehicles |
| DOI：10.13949/j.cnki.nrjgc.2019.01.009 |
| Key Words:gasoline composition emission chassis dynamometer vehicle performance |
| Author Name | Affiliation | | WANG Hu, ZHANG Diping, DONG Fang, YANG Yong, LIU Xinlu, LIU Haifeng | 1.State Key Laboratory of Engines, Tianjin University, Tianjin 300072, China
2.SINOPEC Sales Petroleum Products Technique Research Institute, Tianjin 300384, China |
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| 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. |
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