Patent ID: 6571654
Filing Date: 2003-06-03
Classification: F16D,F16H,Y10T

Abstract:
A transmission for transferring drive power from an engine to a driveline, comprising:a first shaft adapted to be driven by the engine; a second shaft adapted to drive the driveline; a first constant-mesh gearset having a first drive gear fixed to said first shaft and meshed with a first driven gear rotatably supported on said second shaft; a second constant mesh gearset having a second drive gear fixed to said first shaft and meshed with a second driven gear rotatably supported on said second shaft; a third constant-mesh gearset having a third drive gear fixed to said first shaft and meshed with a third driven gear rotatably supported on said second shaft; another constant-mesh gearset having a another drive gear fixed to said second shaft and meshed with another driven gear rotatably supported on said first shaft; a first clutch having a first sleeve that is moveable from a released position to a first locked position for releaseably coupling said first driven gear to said second shaft, said first sleeve is further moveable from its released position to a second locked position for releasably coupling said second driven gear to said second shaft, and a first power-operated actuator for moving said first sleeve; a second clutch having a second sleeve moveable between a released position and a locked position for releaseably coupling said third driven gear to said second shaft, a first clutch pack operably disposed between said third driven gear and said second shaft, a first thrust mechanism for exerting a clutch engagement force on said first clutch pack in response to movement of said second sleeve from its released position toward its locked position, and a second power-operated actuator for moving said second sleeve between its released and locked positions; another clutch having another sleeve moveable between a released position and a locked position for releaseably coupling said another driven gear to said first shaft, a second clutch pack operably disposed between said another driven gear and said first shaft, a second thrust mechanism for exerting a clutch engagement force on said second clutch pack in response to movement of said another sleeve from its released position toward its locked position, and a third power-operated actuator for moving said another sleeve; and a transmission controller for controlling actuation of said first, second and another power-operated actuators.