进气温度和道路工况对整车NOx排放的影响研究

打开文本图片集
【摘要】为有效控制整车NOx排放量,利用单因素变量法,从进气温度、道路工况角度对整车NOx排放量进行研究,从而得到不同因素对整车NOx排放量的影响规律,结果表明:进气温度每升高10 ℃,NOx原始排放浓度约增大5%,尾气排放浓度增大19%~44%;不同道路工况对NOx排放量的影响差异较大。
关键词:进气温度 道路工况 NOx排放
中图分类号:TK427 文献标志码:A DOI: 10.20104/j.cnki.1674-6546.20230064
Study on the Influence of Intake Temperature and Road Conditions
on Vehicle NOx Emission
Li Jiandong1,2, Shi Xiangdong1,2, Zhen Lei1,2, Liu Han1,2, Liu Zhiwen1,2
(1. State Key Laboratory of Engine Reliability, Weifang 261061; 2. Weichai Power Co., Ltd., Weifang 261061)
【Abstract】In order to effectively control vehicle NOx emission, this paper studied vehicle NOx emission from the perspective of intake temperature and road conditions with the single factor variable method and obtained the influence rule of different factors on vehicle NOx emission. The results show that with the intake temperature increasing by 10 ℃, the original NOx emission concentration increases by about 5% and the tail gas emission concentration increases by 19%~44%. The influence range of different road conditions on NOx emission shows great difference.
Key words: Intake temperature, Road condition, NOx emission
【引用格式】 李建东, 史祥东, 甄雷, 等. 进气温度和道路工况对整车NOx排放的影响研究[J]. 汽车工程师, 2023(9): 45-48.
LI J D, SHI X D, ZHEN L, et al. Study on the Influence of Intake Temperature and Road Conditions on Vehicle NOx Emission[J]. Automotive Engineer, 2023(9): 45-48.
1 前言
GB 17691—2018《重型柴油车污染物排放限值及测量方法(中国第六阶段)》[1]规定了整车车载尾气检测系统(Portable Emission Measurement System,PEMS)测试的载荷、环境温度、车速、海拔等影响因素。(剩余4053字)