基于工况变化的港作拖轮排放特性

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Abstract The Portable Emission Measurement System (PEMS) was used to conduct the emission test on a port tugboat under variable sailing operating conditions. Emission characteristics under different operating conditions were studied, including the transient characteristics of CO, THC and NO_x, distribution characteristics of particle size, and the emission factors of main engine. The results showed that the particle size of the tugboat main-engine presented a single-peak or double-peak distribution under daily sailing conditions and different engine loads. The first peak of particle size was between 30 and 40nm, while the second peak was 191.1nm. Based on fuel consumption, the emission factors of CO and THC were significantly higher under the entry-and-return condition than other operating conditions; the emission factors of NO_x, PM and PN were higher under departure-and-return condition than other operating conditions. Based on distance, the emission factors of pollutants under topping operation were higher than other operating conditions. Based on power, the emission factors of CO and THC were the highest under topping operation condition (4.10 and 1.20g/(kW·h) respectively); the emission factors of NO_x, PM, and PN were the highest under the reverse-towing operating condition, with 10.28g/(kW·h), 0.28g/(kW·h) and 13.97×10¹⁴ units/(kW·h) respectively.

Key words： ship diesel engine variable sailing operating conditions PEMS particle emission factor

Received: 16 September 2020

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	Articles by authors
	TANG Yuan-zhi
	LOU Di-ming
	ZHANG Yun-hua
	SUN Xian-chao
	TAN Pi-qiang
	HU Zhi-yuan

Cite this article:

TANG Yuan-zhi,LOU Di-ming,ZHANG Yun-hua等. Emission characteristics of port tugboat based on working conditions[J]. CHINA ENVIRONMENTAL SCIENCECE, 2021, 41(5): 1995-2003.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2021/V41/I5/1995

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