汽车工程 ›› 2024, Vol. 46 ›› Issue (1): 151-160.doi: 10.19562/j.chinasae.qcgc.2024.01.016

• 精选论文 • 上一篇    下一篇

重型柴油车实际道路NO x 排放分析方法研究

吕立群1,徐龙2,尹航3,杨杨2,葛蕴珊1()   

  1. 1.北京理工大学机械与车辆学院,北京 100081
    2.潍柴动力股份有限公司排放法规室,潍坊 261061
    3.中国环境科学研究院机动车排污监控中心,北京 100021
  • 收稿日期:2023-05-05 修回日期:2023-07-04 出版日期:2024-01-25 发布日期:2024-01-23
  • 通讯作者: 葛蕴珊 E-mail:geyunshan@bit.edu.cn
  • 基金资助:
    * 国家自然科学基金(52272342)和国家重点研发计划(2022YFC3701802)资助。

Research on Real-World NO x Emission Analysis Methods for Heavy-Duty Diesel Vehicles

Liqun Lyu1,Long Xu2,Hang Yin3,Yang Yang2,Yunshan Ge1()   

  1. 1.School of Mechanical Engineering,Beijing Institute of Technology,Beijing  100081
    2.Emission Regulation Office,Weichai Power Co. ,Ltd. ,Weifang  261061
    3.Vehicle Emission Control Center,Chinese Research Academy of Environmental Sciences,Beijing  100021
  • Received:2023-05-05 Revised:2023-07-04 Online:2024-01-25 Published:2024-01-23
  • Contact: Yunshan Ge E-mail:geyunshan@bit.edu.cn

摘要:

利用PEMS对6辆典型国六重型柴油车开展实际道路排放测试,基于功基窗口法(中国和欧盟)、NTE法(美国EPA)和3B-MAW法(美国CARB)研究了重型柴油车实际道路NO x 排放特性,探讨了不同分析方法的特点及适用性。结果表明:基于功基窗口法的NO x 排放结果符合中国和欧盟的监管要求,但基于NTE法和3B-MAW法的NO x 排放合规性具有不确定性。NO x 排放数据利用率低导致NTE法无法有效分析实际道路NO x 排放,3B-MAW法对NO x 排放分类管理值得借鉴。冷起动NO x 排放占PEMS试验的47.3%~80.7%,重型柴油车冷起动NO x 排放应被重视。然而目前中国、欧盟和美国的重型车实际道路NO x 排放分析方法均无法有效评估冷起动NO x 排放。因此,下阶段排放法规对冷起动NO x 排放的监管应当提出相应测试循环、分析方法和排放限值,切实降低重型柴油车NO x 实际排放。

关键词: 重型柴油车, 实际道路NO x 排放, NTE法, 功基窗口法, 3B-MAW法

Abstract:

PEMS is used to conduct the real-world emission tests on six typical China-VI diesel vehicles. Based on the work-based MAW (China and the EU), NTE method (U.S. EPA) and 3B-MAW method (U.S. CARB), the real-world NO x emission characteristics of heavy diesel vehicles are studied, and the characteristics and applicability of different analysis methods are discussed. The results show that the NO x emission results based on the work-based MAW method can meet the regulatory requirements of China and the EU, but the NO x emission compliance based on the NTE method and 3B-MAW method is uncertain. The low utilization of NO x emission data leads to the inability of NTE method to effectively analyze the real-world NO x emission characteristics. And the 3B-MAW method is worthy of reference for NO x emission classification management. Cold-start NO x emission accounts for 47.3%-80.7% of the PEMS test, and the cold-start NO x emission of heavy-duty diesel vehicles should be paid attention to. However, the current real-world NO x emission analysis methods for heavy-duty vehicles in China, the EU and U.S. are unable to effectively evaluate cold-start NO x emission. Therefore, the supervision of cold-start NO x emission in the next stage of emission regulations should put forward the specific test cycle, analysis methods and emission limit, to effectively reduce the actual NO x emission of heavy diesel vehicles.

Key words: heavy-duty diesel vehicles, real-world NO x emission, NTE method, work-based MAW method, 3B-MAW method