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重型商用车瞬态工况NO_(x)排放特征分析

Analysis of NO_(x) Emission Characteristics of Heavy-Duty Commercial Vehicles in Transient Conditions
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摘要 为分析瞬态工况对重型商用车NO_(x)排放的影响,通过对重型商用车瞬态运行工况进行分类,在冷车起步、行驶中停车起步、通过高速公路收费口、超越加速4个典型工况下针对NO_(x)排放特征开展试验研究,结果表明:瞬态工况会引起NO_(x)排放量升高,尿素溶液的消耗量相对于稳态工况增加了约0.86~4倍。 To analyze the influence of transient conditions on NO_(x) emission of heavy duty commercial vehicles,by classifying the transient operating conditions of heavy-duty commercial vehicles,the NO_(x) emission characteristics were tested under four typical operating conditions,including cold car start,stop and start while driving,driving through highway toll gates,and overtaking acceleration.The test results show that the transient condition will cause the NO_(x) emission to rise,and increase the consumption of urea solution,which is about 0.86~4 times of the steady condition.
作者 刘刚 李静静 王兴元 李建东 Liu Gang;Li Jingjing;Wang Xingyuan;Li Jiandong(State Key Laboratory of Engine Reliability,Weifang 261061;R&D Center,Weichai Power Co.,Ltd.,Weifang 261061)
出处 《汽车工程师》 2024年第6期42-48,共7页 Automotive Engineer
关键词 重型商用车 瞬态工况 NO_(x)排放 超越加速 Heavy-duty Commercial Vehicles Transient conditions NO_(x) emissions Overtaking acceleration
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