海拨高度对柴油机起动污染物排放的影响

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摘要以某大功率低压缩比柴油机为研究对象，进行了0，1000，2000，3000，3750，4500m 6个海拨高度的起动排放试验，研究了该柴油机不同海拨高度下起动过程中的HC，CO，NO_x和颗粒物排放特性.结果表明：海拨升高，柴油机起动过程的HC，CO和颗粒物排放增加，NO_x排放降低；与平原（0m海拨）比较，该柴油机高原（4500m海拨）冷起动排放的HC，CO和颗粒物分别增加7.1，2.6和2.1倍，NO_x降低53.8%；0~4500m海拨，该柴油机起动过程排放的颗粒物中聚集态颗粒物质量占94%~99%，颗粒物数量呈单峰对数分布，峰值粒径随着海拨的升高向大粒径方向移动，几何平均粒径增大.

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	胡志远
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关键词 ：污染物排放, 海拨, 起动, 柴油机

Abstract：A number of starting pollutant emission tests of a high-power, low compression ratio diesel engine at 0, 1000, 2000, 3000, 3750 and 4500m altitude have been carried out respectively. The aim was to research emission characteristics of HC, CO, NO_x and particulate matter from start process of low compress ratio diesel engine at different altitudes. The test results shown that the HC, CO and particulate matter emissions of the tested diesel engine increases with the sea level rise, whereas NO_x emissions decreased. The HC, CO, particulate matter emissions at 4500m were increased by 7.1. 2.6, and 2.1times compared that at 0m, but NO_x decreased by 53.8%. The mass fraction of aggregated particles accounted for 94%~99% of the total particulate matter mass emission during the process of starting the diesel engine under 0~4500m altitude, and the quantity of particulates showed single peak value logarithmic distribution, the peak particle size, as well as the geometric mean particle diameter increases with the rising of altitude.

Key words： pollutant emission altitude start diesel engine

收稿日期: 2017-06-06

PACS:

X502

通讯作者: 胡志远,副教授,huzhiyuan@tongji.edu.cn E-mail: huzhiyuan@tongji.edu.cn

作者简介: 胡志远(1970-),男,河北安国人,副教授,博士,主要研究方向为汽车能源技术及汽车低排放设计技术.发表论文100余篇.

引用本文:

胡志远, 于书祥, 阚泽超, 曹志义, 楼狄明. 海拨高度对柴油机起动污染物排放的影响[J]. 中国环境科学, 2018, 38(1): 91-96. HU Zhi-yuan, YU Shu-xiang, KAN Ze-chao, CAO Zhi-yi, LOU Di-ming. Pollutant emission characteristics during start process under different altitude of diesel engine. CHINA ENVIRONMENTAL SCIENCECE, 2018, 38(1): 91-96.

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http://manu36.magtech.com.cn/Jweb_zghjkx/CN/ 或 http://manu36.magtech.com.cn/Jweb_zghjkx/CN/Y2018/V38/I1/91

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