不同后处理装置对柴油车排放特性的影响——基于行驶里程的后处理装置对柴油公交车气态物排放特性的影响

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Abstract

In the long-term test, gaseous emission characteristics of 3diesel-buses equipped with DOC, CDPF and DOC+CDPF were periodically tested with PEMS to analyze the performance deterioration of different after-treatments while the driving distance increases. Results showed that the operating lifetime of DOC was around 80,000km. Its average reduction rates of CO, THC and NO_x were respectively 78%, 43% and 27% before performance deterioration. The operating lifetime of CDPF was comparatively short, so periodic maintenance with high temperature was necessary, and the maintenance period should be around 10,000km. Its average reduction rates of CO, THC and NO_x were respectively 74%, 16% and 15% before performance deterioration. The operating lifetime of DOC+CDPF was around 120000km. Its average reduction rates of CO, THC and NO_x were respectively 87%, 76% and 21% before performance deterioration. The lifetime of after-treatment can be extended effectively by the the continuous regeneration of DOC+CDPF.

Key words： diesel oxidation catalyst catalyzed diesel particulate filter diesel-bus driving-distance performance deterioration

Received: 11 January 2016

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	Articles by authors
	LOU Di-ming
	ZHAO Ke-xin
	TAN Pi-qiang
	HU Zhi-yuan

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LOU Di-ming,ZHAO Ke-xin,TAN Pi-qiang等. Gaseous emission characteristics of diesel bus equipped with different after-treatments based on driving distance[J]. CHINA ENVIRONMENTAL SCIENCECE, 2016, 36(8): 2282-2288.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2016/V36/I8/2282

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