Patent ID: 9746064
Date: 2017-08-29
CPC Classifications: F16D,F16H

Claim:
1. A vehicle driveline component comprising: a housing; an input pinion received in the housing and rotatably disposed about a first axis; a ring gear received in the housing and rotatably disposed about a second axis; a differential assembly mounted in the housing for rotation about the second axis, the differential assembly having a differential case, a first friction clutch and a second friction clutch, the differential case being coupled to the ring gear for common rotation, the first friction clutch having a first input portion, which is coupled to the differential case for common rotation, and a first output portion, the second friction clutch having a second input portion, which is coupled to the differential case for common rotation, and a second output portion; a hydraulic circuit comprising a reservoir, a first cylinder assembly, a second cylinder assembly, a first valve, a second valve, an electric motor, a pump, a first flow control device and a second flow control device, the reservoir being configured to hold a hydraulic fluid, the first cylinder assembly being configured to selectively actuate the first friction clutch and including a first piston that is received in a first chamber, the second cylinder assembly being configured to selectively actuate the second friction clutch and including a second piston that is received in a second chamber, the first valve being a solenoid operated, normally open two-way valve including a first valve element, a first outlet port, and a first inlet port, the first valve element being movable between a first position and a second position, the first outlet port being in fluid communication with the first chamber, the first valve element permitting fluid communication between the first inlet port and the first outlet port when the first valve element is in the first position and the first valve element inhibiting fluid communication between the first inlet port and the first outlet port when the first valve element is in the second position, the second valve being a solenoid operated, normally open two-way valve including a second valve element, a second outlet port, and a second inlet port, the second valve element being movable between a third position and a fourth position, the second outlet port being in fluid communication with the second chamber, the second valve element permitting fluid communication between the second inlet port and the second outlet port when the second valve element is in the third position and the second valve element inhibiting fluid communication between the second inlet port and the second outlet port when the second valve element is in the fourth position, the electric motor being selectively operable for driving the pump, the pump being configured to draw hydraulic fluid from the reservoir and provide pressurized hydraulic fluid to the first and second inlet ports, the first flow control device being in fluid communication with the first chamber and the reservoir when the first valve element is in the first and second positions, the second flow control device being in fluid communication with the second chamber and the reservoir when the second valve element is in the third and fourth positions.