摘要
The effect of different ambient temperatures and altitudes on the tailpipe emissions from the RDE test was measured on a China-6emission standard light-duty direct-injection gasoline vehicle. The results showed that the 30ºC ambient temperature increased the heat load on the after treatment devices compared to the 23ºC ambient temperature test, resulting in an increase in CO and PN emissions and a slight decrease in NOx emissions from the test vehicle. It is found that at 30ºC, the increase in test altitude reduced the vehicle's road resistance requirements, which in turn reduced the frequency of fuel enrichment, resulting in a trend of decreasing CO and PN with increasing altitude. The results also show a relatively high sensitivity of CO and PN emissions in the urban phase to changes in RDE test boundary conditions, indicating that further refinement of the vehicle's emissions calibration is still necessary.
投稿的翻译标题 | Emission characteristics of light duty vehicle in RDE tests under different environmental conditions |
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源语言 | 繁体中文 |
页(从-至) | 2561-2568 |
页数 | 8 |
期刊 | Zhongguo Huanjing Kexue/China Environmental Science |
卷 | 42 |
期 | 6 |
出版状态 | 已出版 - 20 6月 2022 |
关键词
- Altitude
- Ambient temperature
- Light-duty gasoline vehicles
- RDE