摘要
为提高大型电动客车能量经济性、减轻动力冲击,提出动力传动系统中采用手动离合器和3挡变速器。根据整车行驶工况和电机机械特性对变速系统进行匹配。基于客车的典型城市运行工况,把车辆行驶速度和驱动力分布换算为电机运行的转速和转矩,并映射到电机机械特性图上,使运行工况点在电机特性图上的分布更多处于高效率区,提高车辆在典型工况下的经济性。仿真和测试结果表明,所采用的动力传动系统在城市运行工况下,具有较高的动力性和经济性。
For improving the energy economy and mitigating the dynamic impact of electric buses,a scheme is proposed to use a manual clutch with a 3-gear transmission in powertrain system.According to the driving conditions of vehicle and the torque-speed characteristics of motor,the transmission system is matched.Based on the typical urban driving conditions,the vehicle speed and the distribution of driving force are converted to the speed and torque of motor and then mapped into the characteristics chart of motor to make most of the operating points fall into high efficiency region,and enhance the energy economy of vehicle in typical working conditions.The results of simulation and testing show that the powertrain system adopted has higher power performance and energy economy in urban driving condition.
出处
《汽车工程》
EI
CSCD
北大核心
2013年第8期683-686,705,共5页
Automotive Engineering
基金
国家高技术研究发展计划(863计划)项目(2008AA11A135)资助
关键词
电动车
动力传动系统
电机特性
行驶工况
electric vehicle
powertrain system
motor characteristics
driving conditions
