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针对一种单电机重度混合动力驱动系统的动力耦合机构进行了结构设计,重点进行了单向离合器的选型和湿式多片离合器的设计。开展了动力耦合机构可靠性FMEA(Failure Mode and Effects Analysis)定性分析,提出了动力耦合机构可能的故障模式及其对子系统、零部件的可靠性影响。提出了动力耦合机构可靠性台架试验的方法,开展了ISG电机(Integrated Starter and Generator,即汽车起动发电一体机)原地启动发动机可靠性台架试验和行进间启动发动机可靠性台架试验,并对试验结果进行了分析,对动力耦合机构的设计及可靠性分析理论进行了验证。试验结果表明:所设计的动力耦合机构满足重度混合动力汽车的功能需求,为实现动力耦合机构装车运行奠定了基础。
Aiming at the dynamic coupling mechanism of a single hybrid motor drive system, the structure design was carried out. The selection of one-way clutch and the design of wet multi-plate clutch were emphasized. The qualitative analysis of FMEA (Failure Mode and Effects Analysis) of dynamic coupling mechanism was carried out. The possible failure modes of dynamic coupling mechanism and its influence on the reliability of subsystems and components were put forward. A method of reliability test of power coupling mechanism is put forward, and the reliability test of in-place engine start-up by ISG (Integrated Starter and Generator) and reliability test of engine start- The test results are analyzed and the theory of dynamic coupling mechanism design and reliability analysis is verified. The experimental results show that the designed dynamic coupling mechanism meets the functional requirements of heavy hybrid vehicles and lays the foundation for the realization of the power coupling mechanism loading and running.