Effect of driving cycles on energy efficiency of electric vehicles  

作　　者：JI FenZhu XU LiCong WU ZhiXin 

机构地区：[1]School of Transportation Science and Engineering,Beihang University,Beijing 100191,China [2]Tianjin Qingyuan Electric Vehicle Co.,Ltd,Tianjin 300162,China

出　　处：《Science China(Technological Sciences)》2009年第11期3168-3172,共5页中国科学（技术科学英文版）

基　　金：Supported by the National High Technology Research and Development Program of China ("863" Program) (Grant No. 2006AA11A112);the Leading Academic Discipline Project of Beijing Municipal Commission of Education

摘　　要：Based on several typical domestic and foreign driving cycles, the energy usage efficiency of the EVs-XL 2000 type electric vehicle (EV) is analyzed. The energy usage efficiency of EVs and the evaluation index of electromotor efficiency are studied. The concepts of "interval usage percentage of energy efficiency" and "exertion degree of energy efficiency" of electromotor are presented. The effects of driving cycles on the distribution of the running status of electromotor and the efficiency are investi-gated. The efficiency of electromotor and the trend of average driving force at different driving cycles are discussed. The exertion degree of energy efficiency and the total power train efficiency of the EVs-XL 2000 type electric vehicle at typical driving cycles are analyzed and calculated. The result indicates that the driving cycle engenders a big influence on the exertion degree of electromotor energy efficiency at different driving cycles. Dissimilar driving cycles result in different efficiency distributions of electromotor, the control system as well as the average driving force and driving range are variable.Based on several typical domestic and foreign driving cycles, the energy usage efficiency of the EVs-XL 2000 type electric vehicle (EV) is analyzed. The energy usage efficiency of EVs and the evaluation index of electromotor efficiency are studied. The concepts of “interval usage percentage of energy efficiency” and “exertion degree of energy efficiency” of electromotor are presented. The effects of driving cycles on the distribution of the running status of electromotor and the efficiency are investigated. The efficiency of electromotor and the trend of average driving force at different driving cycles are discussed. The exertion degree of energy efficiency and the total power train efficiency of the EVs-XL 2000 type electric vehicle at typical driving cycles are analyzed and calculated. The result indicates that the driving cycle engenders a big influence on the exertion degree of electromotor energy efficiency at different driving cycles. Dissimilar driving cycles result in different efficiency distributions of electromotor, the control system as well as the average driving force and driving range are variable.

关 键 词：ELECTRIC VEHICLES electromotor driving CYCLE ENERGY EFFICIENCY evaluation INDEX 

分 类 号：U469.72[机械工程—车辆工程]