Patent ID: 7318512
Filing Date: 2008-01-15
Classification: F16D

Abstract:
1. A dual clutch transmission having radially nested clutches comprising: an outer clutch having a plurality of first outer clutch disks, a plurality of first inner clutch disks, and a first inner support carrier, said first inner clutch disks and said first outer clutch disks operatively and alternately disposed between each other, said first inner clutch disks operatively mounted to said first inner carrier; an inner clutch having a plurality of second outer clutch disks, a plurality of second inner clutch disks, and a second inner support carrier, said second inner clutch disks and said second outer clutch disks operatively and alternately disposed between each other, said second inner clutch disks operatively mounted to said second inner carrier; a common disk carrier having a first outer clutch disk carrier that operatively supports said first outer clutch disks of said outer clutch and a second outer clutch disk carrier that operatively supports said second outer clutch disks of said inner clutch; a first actuating piston adapted to cause said first inner and said first outer disks of said outer clutch to operatively engage each other, and a second actuating piston adapted to cause said second inner and said second outer disks of said inner clutch to operatively engage each other; and a guide cylinder wherein said first actuating piston is disposed between said guide cylinder and said common disk carrier such that said guide cylinder and said first actuation piston form a pressure chamber that is adapted to be pressurized to cause said first actuating piston to actuate said outer clutch, and said first actuation piston and said common disk carrier form a compensation chamber that is adapted to be pressurized to compensate for excess outer clutch actuation pressure.