山路行驶的柴油车污染物排放特性试验

doi:10.3969/j.issn.1674-8484.2021.01.010

汽车安全与节能学报 ›› 2021, Vol. 12 ›› Issue (1): 100-105.DOI: 10.3969/j.issn.1674-8484.2021.01.010

山路行驶的柴油车污染物排放特性试验

彭美春(), 廖清睿, 王海龙, 叶伟斌

广东工业大学机电工程学院,广州 510006,中国

收稿日期:2022-04-07 出版日期:2021-03-31 发布日期:2021-04-02
作者简介:彭美春（1963—),女（汉）,湖南,教授。E-mail: mcpeng@gdut.edu.cn。
基金资助:
广东省交通运输行业推广应用新能源汽车技术研究项目(GPCGD152171FG303F)

Tests of exhaust emission characteristics for diesel vehicles driving on the mountain road

PENG Meichun(), LIAO Qingrui, WANG Hailong, YE Weibin

School of Electromechanical Engineering, Guangdong University of Technology, Guangzhou 510006,China

Received:2022-04-07 Online:2021-03-31 Published:2021-04-02

摘要/Abstract

摘要：

在山路和平路上,进行了不同载荷下国V柴油车的实际道路行驶排放（RDE）试验。采集车速、海拔、氮氧化物(NO_x)和颗粒物数量(PN)排放浓度等数据,分析了道路坡度、车辆载荷与输出功率对排放的影响。研究发现：测试柴油车辆,在平均坡度约6%山路行驶时NO_x排放因子高于平路20%以上,PN低于平路20%以上。道路坡度自0增大到8%,NO_x排放浓度升高1倍以上,PN排放浓度升高20%~60%;坡度进一步增大,NO_x与PN 排放浓度上升变缓,继而下降。载荷增大,NO_x与PN排放浓度升高;NO_x、PN排放速率在10~40 kW功率区较大;NO_x与PN高排放速率区随载荷增大变宽。该成果可为RDE测试车辆运行条件的设置提供参考。

关键词: 柴油车, 山路行驶, 污染物排放, 氮氧化物(NO_x), 颗粒物数量(PN), 山路坡度, 载荷

Abstract:

Reality driving emission (RDE) tests were carried out on loads in mountains and plains for diesel vehicles of the CHINA Phase V. The data of speed, altitude, NO_x and PN emission concentration, etc. were collected to investigate the influence of the slope of mountain road, the vehicle mass loads and the output power on NO_x and PN emissions of diesel vehicles. The results show that NO_x emission factors on mountain road with an average slope of about 6% are 20% at least higher than that on flat road, and PN emission factors are 20% at least lower than that on flat road. With the increased of gradient from 0 to 8%, NO_x emission concentrations increased by more than 1 times, and PN emission concentrations increased by 20%-60%. As the gradient increases further, NO_x and PN emission concentration increases slowly and then decreases. When the load increased, NO_x and PN emission concentrations increase. The emission rates of NO_x and PN are high in 10-40 kW region, and the high emission regions of NO_x and PN become wider with increased of load. The results can provide a reference for the setting of vehicle operating conditions for RDE test.

Key words: diesel vehicles, driving on mountain road, exhaust emission, nitrogen oxides (NO_x), particle number (PN), slope of mountain road, vehicle load

中图分类号:

U467.11

彭美春, 廖清睿, 王海龙, 叶伟斌. 山路行驶的柴油车污染物排放特性试验[J]. 汽车安全与节能学报, 2021, 12(1): 100-105.

PENG Meichun, LIAO Qingrui, WANG Hailong, YE Weibin. Tests of exhaust emission characteristics for diesel vehicles driving on the mountain road[J]. Journal of Automotive Safety and Energy, 2021, 12(1): 100-105.

图/表 11

整备质量	2.350 t
最大允许载荷	1.450 t
发动机排量	2.5 L
发动机最大功率	100 kW
累计行驶里程	42 897 km

表1 测试车辆主要技术参数与信息

图1 试验设备的安装连接

图2 山路试验线路

图3 平路试验线路

图4 试验道路海拔、车速随时间变化

图5 山路试验车辆功率分布

图6 NOx与PN排放因子山路、平路对比

图7 时间占比沿坡度分布

图8 NOx、PN排放浓度沿坡度分布

图9 基于功率-坡度的NOx排放速率分布

图10 基于功率-坡度的PN排放速率分布

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山路行驶的柴油车污染物排放特性试验

Tests of exhaust emission characteristics for diesel vehicles driving on the mountain road

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