Abstract: An improved hydraulically locking limited slip differential assembly for a drivetrain of a motor vehicle having a fluid pump external to a differential carrier and arranged for preventing slip between the wheels by selectively pressurizing a differential clutch internal to the carrier, and a controller arranged for selectively activating the fluid pump.

Abstract: An active drive disconnect system for a drivetrain of a motor vehicle controlling selective engagement of a first clutch and a second clutch while the vehicle is in motion without the need for synchronization. In the active drive disconnect the first clutch assembly is arranged for selective engagement of a secondary driveline with a primary driveline, and the second clutch is arranged for selectively connecting an axle half-shaft with a differential.

Abstract: An improved hydraulically locking limited slip differential assembly for a drivetrain of a motor vehicle having a fluid pump external to a differential carrier and arranged for preventing slip between the wheels by selectively pressurizing a differential clutch internal to the carrier, and a controller arranged for selectively activating the fluid pump.

Abstract: A clutch pack actuation system for compressing the annular clutch pack of a limited slip differential includes a pump which can provide a supply of pressurized fluid, an annular member provided between the pump and the annular clutch pack, and an annular piston which is slidable within the annular member. Together with the annular member, the annular piston defines a clutch pressure chamber adapted to receive the supply of pressurized fluid. A fluid return line, by which the pressurized fluid is discharged from the clutch pressure chamber, is provided, and a valve, through which the pressurized fluid is returned to a fluid reservoir, is disposed in the fluid return line. The valve includes an element which is electromagnetically actuated so as to produce a desired pressure in the clutch pressure chamber.

Abstract: A clutch pack actuation system for compressing the annular clutch pack of a limited slip differential includes a pump which can provide a supply of pressurized fluid, an annular member provided between the pump and the annular clutch pack, and an annular piston which is slidable within the annular member. Together with the annular member, the annular piston defines a clutch pressure chamber adapted to receive the supply of pressurized fluid. A fluid return line, by which the pressurized fluid is discharged from the clutch pressure chamber, is provided, and a valve, through which the pressurized fluid is returned to a fluid reservoir, is disposed in the fluid return line. The valve includes an element which is electromagnetically actuated so as to produce a desired pressure in the clutch pressure chamber.