Browse Publications Technical Papers 2023-01-1098

NVH Features and Corresponding Control Strategy for Differing Architecture Hybrid Vehicle Facing Specific Driving Scenarios 2023-01-1098

Hybrid vehicle, equipped power source not only gas engine but also motor, power electronics and differing types of transimission,manefests more complicated/specific/exceptional NVH behaviors than that of gas powered vehiclele,like parking engine on/off for charging,,EV mode traction/recuperation,mode switch,etc,on top of that,differing hybrid architecture exists,depending on number and location of motor,and type of transmission,hence,NVH features and related control strategies is highly likely to be different even under identical driving scenarios ,hence,the holistic and deep insight into the NVH features and related control strategies are very much meaningful for hybrid vehicle NVH performance, and that expedite the process of vehicle NVH development. Firstly in this paper,,the differing hybrid architecture,e.g single motor installed parallel hybrid and twin motor installed main stream hybrid ,is delineated as well as the general NVH pros/cons as per common driving scenarios.then,the specific driving scenarios assessing NVh performance differing to gas powered vehicle is described,in terms of concerned engine/motor/transmission/vehicle parameters Secondly, the NVH features for differing hybrid architecture under common driving scenarios is illustrate that distinguished NVH phenomenon existed even under common driving scenarios by differing hybrid architecture,as of different number/location of motor and of topology of transmission. Lastly,the NVH control strategies/measures for above-mentioned NVH features under common driving scenarios pervasively for all mentioned hybrid architecture is elaborated,in terms of specifically centering on calibration aspects,for all involved components/assemblies


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