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汽车安全与节能学报 ›› 2023, Vol. 14 ›› Issue (3): 375-384.DOI: 10.3969/j.issn.1674-8484.2023.03.013

• 汽车节能与环保 • 上一篇    下一篇

基于远程监控三区移动平均窗口法的重型车排放特征

任烁今1(), 张超1, 李刚2,*(), 李腾腾1, 于全顺1, 关敏2, 吉喆2, 景晓军1   

  1. 1.中汽研汽车检验中心(天津)有限公司,天津300300,中国
    2.中国环境科学研究院 国家环境保护机动车污染控制与模拟重点实验室,北京100012,中国
  • 收稿日期:2022-12-13 修回日期:2023-02-12 出版日期:2023-06-30 发布日期:2023-06-30
  • 通讯作者: 李刚
  • 作者简介:*李刚,高级工程师。E-mail:ligang@vecc.org.cn
    任烁今(1990—),男(汉),河北,高级工程师。E-mail: renshuojin@163.com
  • 基金资助:
    中国环境科学研究院中央级公益性科研院所基本科研业务专项资助(2021-JY-23)

Heavy-duty vehicle emission characteristics based on the remote-monitoring three-bin moving-average window method

REN Shuojin1(), ZHANG Chao1, LI Gang2,*(), LI Tengteng1, Yu Quanshun1, GUAN Min2, JI Zhe2, JING Xiaojun1   

  1. 1. CATARC Automotive Test Center (Tianjin) Co., Ltd., Tianjin 300300, China
    2. State Environmental Protection Key Laboratory of Vehicle Emission Control and Simulation, Beijing 100012, China
  • Received:2022-12-13 Revised:2023-02-12 Online:2023-06-30 Published:2023-06-30
  • Contact: LI Gang

摘要:

为了研究实际道路上重型车的排放特征,提出了一种基于远程监控数据的三区移动平均窗口(3B-MAW)模型,并与功基窗口法分析结果进行了对比。模型中远程监控无效数据主要包含NOx传感器未正常传输的数据和发动机停机后仍然上传的数据。每个数据点有可能落在1种、2种或3种区内,三区划分的比例与车辆的实际行驶工况有关。为了同时兼顾排放结果计算的准确性和所需数据量不过大,最小窗口数、窗口宽度、第1划分线和第2划分线这4个模型主要参数应分别设置在2 400、300 s,6%和20%附近。由于不受窗口功率阈值限制,相对于功基窗口法,3B-MAW模型能够实现对低负荷排放更为有效的核查,适合对实际道路随机工况进行分析。

关键词: 重型车, 实际道路排放, 移动平均, 远程监控, 功基窗口法

Abstract:

A three-bin moving average window (3B-MAW) model was proposed and compared with the work-based window method (WB-WM) to investigate the on-road emission characteristics of heavy-duty vehicles. The invalid data of remote monitoring were mainly composed of the NOx sensor’s abnormal data and the uploaded data after the engine shutdown. In the 3B-MAW model, each data was attributed to one, two or three bins. The percentage of the three bins were linked to the vehicle’s real driving conditions. In order to gain the emission calculation accuracy and a smaller scale of required data, the value of the four main parameters, i.e., the minimum window number, the window width, the first cut-off and the second cut-off are set around 2 400 s, 300 s, 6% and 20%, respectively. Since the window power threshold is no longer required, the 3B-MAW method is able to capture the low load emission characteristics more effectively, compared to the WB-WM. Therefore, the 3B-MAW method is a more appreciate approach to analyse on-road random driving conditions.

Key words: heavy-duty vehicle, moving average, remote monitoring, work-based window method

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