A wedge clutch with a wedge ramp transfers the tangential force to an axial force. It has unique features of self-reinforcement and small actuation force, and can be packaged into tight spaces. This wedge clutch can be developed to apply to an automatic transmission (AT) or a hybrid transmission.This paper focuses on the simulation of one wedge clutch in AT during shifting. A mathematical formula is given to describe the self-reinforcement principle of the wedge. The dynamic model of a motor actuated wedge clutch during shifting is built to simulate and develop the control algorithm. The model is implemented in Matlab/Simulink, which includes a DC motor model, a dynamic model of the wedge mechanism and clutch pack, and a driveline model of AT which can simulate a gear shift process.The key characteristics such as variation of normal pressure, response time and energy consumption are evaluated, and the results show a favorable comparison with the traditional hydraulic clutch.
Modeling of a Wedge Clutch in an Automatic Transmission
Sae Technical Papers
SAE 2010 World Congress & Exhibition ; 2010
12.04.2010
Aufsatz (Konferenz)
Englisch
Modeling of a wedge clutch on an automatic transmission
Kraftfahrwesen | 2010
|2010-01-0186 Modeling of a Wedge Clutch in an Automatic Transmission
British Library Conference Proceedings | 2010
|