Simulation of the drive train system of a four tilting wheels race vehicle

This work concerns the final design phase of a drive train system for an innovative four tilting wheels race vehicle, currently in development at the Motorcycle Dynamics Research Group of the University of Padua. The particular kinematic behavior of this prototype imposes some unusual restraints in the design of the system: in detail, the difference between frame and wheels roll angles leads to research a drive train configuration with high angles articulation capabilities. Moreover, some assembly design constraints have to be taken into account, too: the presence of other components and the small working space require a smart layout solution. The proposed system is composed by a belt or chain, which connects the prop shaft to a differential, and two final drive axles each one composed by two plunging joints and a telescopic interconnecting shaft. This solution has been implemented in a multibody assembly, which comprises an almost complete four tilting wheels vehicle, and studied with regards to its kinematic and dynamic behavior: as a result, it was possible to determine an acceptable solution with regards to geometrical aspects. Moreover, dynamic working conditions have been obtained by simulating some critical maneuvers: the corresponding data led to a correct structural dimensioning phase and drove the selection of compatible components