环境温度对重型柴油车整车排放影响研究  

Research on the Influence of Ambient Temperature on Heavy Duty Diesel Vehicles Emission

作　　者：郭勇[1,2] 李博[2] 颜燕[2] 高忠明[2] Guo Yong;Li Bo;Yan Yan;Gao Zhongming(Tianjin Univeristy (Tianjin, 300072, China);China Automotive Technology Research Center Co., Ltd.)

机构地区：[1]天津大学,天津300072 [2]中国汽车技术研究中心有限公司

出　　处：《小型内燃机与车辆技术》2019年第3期64-67,共4页Small Internal Combustion Engine and Vehicle Technique

摘　　要：分别做了2种类型重型柴油车的PEMS试验,对环境温度对车辆的实际道路NOx和PN排放进行了研究,发现低温环境对重型柴油车的整车NOx排放影响较大,相比于高温环境,低温条件下NOx总比排放最大增加82.6%,最小增加43.0%;而环境温度对整车PN总比排放的影响趋势无确定结论,主要与整车后处理技术路线和排放标定策略相关性较大。PEMS tests of two types of heavy duty diesel vehicles are performed. The influence of environmental temperature on the vehicle's actual road NOx emissions and PN are studied, and it's found that low temperature had a greater influence on the NOx emission of heavy duty diesel vehicles. Compared with the high temperature environment, the total NOx specific emissions increase by 82.6% at most and the minimum increase is 43.0%, on the condition of low temperature. However, there is no definite conclusion on the influence trend of the environmental temperature on PN specific emission of the vehicle, which is mainly related to the afertreatment technical route and the emission calibration strategy of the vehicle.

关 键 词：环境温度 重型柴油车 PEMS NOx PN 比排放 

分 类 号：U467.19[机械工程—车辆工程]