| A Hybrid Electric Vehicle (HEV) generally has two or more power sources, whichmakes it able to realize favorable properties of low fuel consumption and low emission byreasonable cooperation of the power sources. It is widely focused and has promising futurein practice. A planetary gear set has two degrees of freedom and is easy to decouple thetorque and speed of the various power sources. This makes it widely used as the powercoupling device for HEV. This paper researches into a hybrid power coupling device withtwo planetary gear sets based on a cooperated enterprise project conducted by JilinUniversity.In this paper, the basic configuration of the power system is firstly proposed. Then, thestructural parameters of each component are determined based on the boundary conditionsof the power source parameters obtained in the parameter matching of the system.Moreover, the transmission scheme is determined according to the transmissioncharacteristics and requirements. Subsequently, the three-dimensional entity models areestablished and assembled on the platform of CATIA V5adopting the parametric modelingmethod.To research into the static mechanical and vibration properties of the power couplingdevice, a finite element analysis including modal analysis and stress analysis, is conductedin Hypermesh. The modal analysis results can predict the vibration properties of themechanism and the stress analysis results can verify the intensity and dangerous operatingpoints of the mechanism. These results provide theory evidence to the production andoptimization of the mechanism in practice.Furthermore, a dynamic model is established in ADAMS to research into the dynamicproperties of the mechanism. The dynamic analysis results indicate that the velocityproperties are in accordance with the transmission requirements of the mechanism. Also,the engaging forces of the gears during the operation are analyzed. The engaging forcesimulation results provide evidence for further research on the mechanism. |
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