Dynamic Characterization and Modeling of Wet Clutch Actuator for High-Fidelity Propulsion System Simulations
Innovations in mobility are built upon a management of complex interactions between sub-systems and components. A need of CAE tools that are capable of system simulations is well recognized, as evidenced by a growing number of commercial packages. However impressive they are, the predictability of such simulations still rests on the representation of base components. Among them, a wet clutch actuator continues to play a critical role in next generation propulsion systems. It converts hydraulic pressure to mechanical force to control torque transmitted through a clutch pack. The actuator is typically modeled as a hydraulic piston opposed by a mechanical spring. Because the piston slides over a seal, some models have a framework to account for seal friction. However, there are few literatures to describe the effects of seals on clutch actuator dynamics.