Development of High Efficiency Dog Clutch with One-Way Mechanism for Stepped Automatic Transmissions

Abstract

In order to reduce drag losses and a clutch actuator load, the new dog clutch system for stepped automatic transmission is developed. Transmitting torque is converted to the engaging force because rotating shaft and dog clutch are connected with the helix spline. The drag losses of this clutch are reduced by 50 to 60%, and the clutch actuator load is reduced by 50% compared to conventional multi-plate wet-type clutch.