高原地区混合动力汽车污染物排放特性与燃油经济性  

Pollutant emission and fuel economy of hybrid electric vehicles in plateau regions

作　　者：姚杨雨 李加强[1,2] 赵龙庆 何超[1,2] Yao Yangyu;Li Jiaqiang;Zhao Longqing;He Chao(College of Mechanics and Transportation,Southwest Forestry University,Kunming 650224,China;Key Laboratory of Vehicle Environment Protection and Safety in Plateau Mountain Area of Yunnan Provincial Colleges,Kunming 650224,China)

机构地区：[1]西南林业大学机械与交通学院,昆明650224 [2]云南省高校高原山区机动车环保与安全重点实验室,昆明650224

出　　处：《内燃机学报》2025年第2期136-143,共8页Transactions of CSICE

基　　金：国家自然科学基金资助项目(51968065);云南省教育厅科学研究基金资助项目(2023Y0770).

摘　　要：为探究混合动力汽车在高原地区是否实现节能减排,在两个城市使用便携式车载排放测试系统对符合国Ⅵ标准的增程式混合动力汽车(E-REV)、插电式混合动力汽车(PHEV)和汽油车开展实际行驶排放(RDE)试验,分析混合动力汽车在高原地区的实际排放和燃油经济性.结果表明:冷却液温度越低、速度与加速度的乘积越大,CO、NO_(x)瞬时排放越大;剔除冷起动排放后,冷起动阶段的CO、NO_(x)排放降低比例大于CO_(2)排放,混合动力汽车的污染物排放受高原环境的影响较小;随着海拔升高,PHEV和汽油车的CO排放上升,而E-REV的CO排放下降,E-REV、PHEV和汽油车的CO_(2)排放增加,NO_(x)排放下降.与汽油车相比,E-REV和PHEV在高原地区的NO_(x)减排体现在市郊、高速工况.E-REV的燃油消耗量随着海拔升高而升高,相比E-REV,PHEV具有良好的燃油经济性.To investigate whether hybrid electric vehicles can achieve energy savings and emissions reduction in plateau regions,real driving emissions(RDE)tests were conducted using a portable onboard emissions measurement system in two cities on extended-range electric vehicles(E-REV),plug-in hybrid electric vehicles(PHEV),and gasoline vehicles compliant with ChinaⅥemission standards.The study analyzed the actual emission characteristics and fuel economy of hybrid electric vehicles in plateau regions.The results indicate that lower coolant temperatures and higher values of the product of speed and acceleration(v·a)result in higher instantaneous emissions of carbon monoxide(CO)and nitrogen oxides(NO_(x)).After excluding cold start emissions,the reduction proportions of CO and NO_(x) emissions during the cold start phase are greater than those of carbon dioxide(CO_(2))emissions.The pollutant emissions of hybrid electric vehicles are less affected by plateau environments.As the altitude increases,CO emissions rise for PHEVs and gasoline vehicles,while CO emissions decrease for E-REV.The CO_(2) emissions for E-REVs,PHEVs,and gasoline vehicles increase,and NO_(x) emissions decrease.Compared to gaso-line vehicles,the NO_(x) reduction of E-REV and PHEV in plateau regions is mainly observed in suburban and highway conditions.The fuel consumption(FC)of E-REV increases with altitude,and PHEVs demonstrate better fuel economy compared to E-REV.

关 键 词：混合动力汽车 实际行驶排放 燃油经济性 排放 

分 类 号：TK417[动力工程及工程热物理—动力机械及工程]