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| Effect of cold and hot start and catalytic on fine particulate emissions |
| DOI：10.13949/j.cnki.nrjgc.XXXX.XX.001 |
| Key Words:fine particulate matter real drive emission cold start hot start gasoline particulate filter |
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| 摘要点击次数: 102 |
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| Abstract:Using real drive emission test, the fine particulate emissions of two China VI light-duty gasoline vehicles were investigated, focused on analyzing the effects of cold and hot start and GPF on fine particulate. The results showed that PN10nm is mainly generated in the cold start, and the emission peak is prone to occur in the rapid acceleration and deceleration conditions, with the highest emission peak of 8.10×1011 #/s.The distribution of the percentage of PN23nm and PN10nm in the speed bands of the vehicles with GPF is widely different, and the number of PN10nm in the total trip is increased by 30.9% compared with that of PN23nm, a growth rate about three times that of vehicles without GPF. Particulate matter emissions increase significantly at low temperatures, with vehicles equipped with GPF showing a notably higher growth rate. The study concludes that controlling particulate emissions during cold starts will be a key focus of future particulate matter regulations. |
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