Patent ID: 6427547
Filing Date: 2002-08-06
Classification: B60K,B60W,B60Y,F16D,F16H,Y02T,Y10S,Y10T

Abstract:
A twin-clutch transmission comprising:an input shaft; an output shaft having first and second output gears fixed thereto; a first countershaft rotatably supporting a first speed gear meshed with one of said first and second output gears; a first master clutch for selectively establishing a releasable drive connection between said input shaft and said first countershaft; a first overrunning clutch operable in a locked mode for coupling said first speed gear to said first countershaft and in a released mode for releasing said first speed gear from engagement with said first countershaft; a first shift actuator for shifting said first overrunning clutch between its locked and released modes; a second countershaft rotatably supporting a second speed gear meshed with one of said first and second output gear; a second overrunning clutch operable in a locked mode for coupling said second speed gear to said second countershaft and in a released mode for releasing said second speed gear from engagement with said second countershaft; a second shift actuator for shifting said second overrunning clutch between its locked and released modes; and a control system for controlling actuation of said first and second actuators.