ISG型混合动力系统轴系动力学性能分析  

Study on dynamic performance shaft of the ISG hybrid power system

作　　者：周久焱[1] 孙逢春[1] 程夕明[1] 

机构地区：[1]北京理工大学电动汽车国家工程实验室,北京100081

出　　处：《哈尔滨工程大学学报》2012年第11期1417-1422,共6页Journal of Harbin Engineering University

摘　　要：为了探讨ISG型混合动力系统轴系的动力学性能,建立了包括机电耦合轴、滑动轴承和发动机缸体在内的混合动力系统轴系数学模型,依此模型对混合动力系统动力学性能进行分析,计算了机电耦合轴扭振频率和曲拐应力分布,同时计算了一个工作周期内不同混合动力工况下滑动轴承的偏心率和油膜压力.通过对计算结果的分析表明:机电耦合轴的混合动力改造不会在发动机工作转速内出现扭振共振;混合动力改造后的机电耦合轴强度不满足要求,需要优化设计和重新校核;混合动力工况不会明显影响混合动力系统轴承的偏心率和油膜压力;根据机电耦合轴电机端轴承的油膜压力和偏心率可以优化电机轴承以及电机的选型和设计.In order to explore the dynamic performance and generator, the mathematical model of ISG hybrid of the electro-mechanical shafting was established coupling shaft of Integrated starter which includes electro-mechanical coupling shaft, sliding bearing and an engine cylinder. It was used to analyze the dynamic performance of the hy- brid shafting. The torsional vibration frequency and crank throw stress distribution of the electro-mechanical cou- pling shaft were calculated, at the same time, the eccentricity and oil film pressure of the sliding bearing were cal- culated for different hybrid conditions in a working cycle. It was found the torsional vibration resonance of electro- mechanical coupling shaft will not happen in the working speed of engine, and the strength need to be redesigned for optimization and checked again after hybrid power reconstruction. The change of the hybrid condition will not distinctly affect the eccentricity and oil film pressure of the bearing of hybrid power system. The selection and de- sign of the motor bearings and motor have been optimized by the oil film pressure and eccentricities at the motor bearings of electro-mechanical coupling shaft.

关 键 词：ISG 混合动力 机电耦合轴 滑动轴承 液体动力润滑 

分 类 号：U469.7[机械工程—车辆工程]