混合动力汽车动力总成试验台设计与开发

Design and development of test bench for hybrid electric vehicle powertrain

为开发混合动力汽车能量管理策略,基于模块化思想,设计开发单轴并联式混合动力汽车动力总成试验台。通过整车工况分析,合理选取动力部件参数,完成试验台动力总成搭建;基于整车传动系统,分析不同工作模式下的能量流,结合车辆行驶阻力公式,建立阻力模拟模块;基于整车控制器和动力单元控制器构建控制网络,控制网络通过CAN总线与各部件进行通讯。试验结果表明,实际车速能够较好地跟随目标车速,数据采集频率和误差符合设计要求,试验台能够实现整车工况模拟与瞬时工况测量。

In order to develop hybrid energy management,a single-axis parallel hybrid powertrain test bench based on the idea of modularization was developed. According to the analysis of vehicle driving cycle,major power components were selected and their basic parameters were defined. The resistance simulation module was designed based on the vehicle resistance formula and analysis of transmission system. The control network,composed of vehicle control unit and power unit controllers,communicated with other parts through CAN bus. The results showed that the actual speed followed the target one well. Data acquisition frequency and error conformed to design requirements. The test bench could be used to realize the simulation vehicle driving cycle and test transient conditions.