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Investigation about The Influence of Variable Valve Timing on Performance of a 3-Cylinder Tgdi Engine Based on Dynamometer Test
| 题名： | Investigation about The Influence of Variable Valve Timing on Performance of a 3-Cylinder Tgdi Engine Based on Dynamometer Test |
| 正文语种： | 中文 |
| 作者： | Wu Tong Zheng Hailiang Wang Di Feng Pengpeng Cang Hecheng Yan Shuo Hao Wei |
| 作者单位： | FAW Group Corporation R&D Center |
| 关键词： | gasoline direct injection variable valve timing engine dynamometer test internal exhaust gas recirculation emission |
| 摘要： | In this work, we document the influence of variable valve timing on performance of a turbocharged gasoline direct injec- tion(TGDI)1. 0-liter 3-cylinder engine under conditions of different loads at different engine speeds. The result of the engine dyna- mometer test demonstrates that optimum variable intake and exhaust valve timings improve volumetric efficiency, internal exhaust gas re- circulation, brake specific fuel consumption(BSFC)and emission characteristics of the TGDI engine. NOX emissions are decreasing with the increasing internal EGR(exhaust gas recirculation)rate. But too high EGR rate causes combustion instability, relatively high- er coefficient of variation(CoV)of indicated mean effective pressure(IMEP), and high hydrocarbon(HC)emissions. |
| 会议日期： | 20171024 |
| 会议举办地点： | 上海 |
| 会议名称： | 第19届亚太汽车工程年会暨2017中国汽车工程学会年会 |
| 出版日期： | 1024-01-20 |
| 母体文献： | 第19届亚太汽车工程年会暨2017中国汽车工程学会年会论文集 |
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