A New Rotating Wedge Clutch Actuation System

Paper #:
  • 2017-01-2441

Published:
  • 2017-10-08
Citation:
Ding, Z., Chen, L., Yin, C., Yao, J. et al., "A New Rotating Wedge Clutch Actuation System," SAE Technical Paper 2017-01-2441, 2017.
Pages:
6
Abstract:
Rotating clutches play an important role in automatic transmissions (AT), dual-clutch transmissions (DCT) and hybrid transmissions. It is very important to continually improve the transmission systems in the areas such as simplifying actuator designs, reducing cost and increasing controllability. A new concept of electrical motor driven actuation using a wedge mechanism, a wedge clutch, demonstrates potential benefits. This wedge clutch has the characteristics of good mechanical advantage, self-reinforcement, and faster and more precise controllability using electrical motor.In this paper, a new rotating wedge clutch is proposed. It presents a challenge since the motor actuator has to be stationary while the clutch piston is rotating. A new mechanism to connect the motor to the wedge piston, including dual-plane bearings and two mechanical ramp linkages, is studied. The design and verification of the physical structure of the actuator are discussed in detail in the paper.
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