Patent ID: 6397994
Filing Date: 2002-06-04
Classification: F16D,F16H

Abstract:
A powershift transmission for use in a motor vehicle having an engine and a driveline, comprising:an output shaft adapted for connection to the driveline; a first input shaft; a second input shaft; a geartrain which can be selectively engaged for establishing a first drive connection between said first input shaft and said output shaft and a second drive connection between said second input shaft and said output shaft; an engine clutch assembly having a housing adapted to be driven by the engine, a first clutch plate fixed to said first input shaft, a second clutch plate fixed to said second input shaft, and a piston disposed between said first and second clutch plates, said piston is operable in a first position to exert a clutch engagement force on said first clutch plate for establishing a drive connection between said housing and said first input shaft, and said piston is operable in a second position to exert a clutch engagement force on said second clutch plate for establishing a drive connection between said housing and said second input shaft, and a spring assembly for biasing said piston to its first position; and a power-operated actuator for moving said piston from its first position to its second position in opposition to the biasing of said spring assembly.