Patent ID: 7611335

Claim:
A compressor assembly for a climate control system of a vehicle, said assembly comprising: a compressor housing defining a suction cavity for receiving a fluid at a suction pressure and a discharge cavity for receiving the fluid from said suction cavity at a discharge pressure higher than the suction pressure and a crankcase in fluid communication with said discharge cavity and enclosing a variable angle wobble plate and at least one compressor piston having a variable piston stroke; a control valve disposed in said compressor housing and defining a chamber therein; a member moveable in said chamber between an activated position opening fluid communication between said discharge cavity and said crankcase when the suction pressure is lower than a predetermined set-point, while closing fluid communication between said suction cavity and said crankcase for pressurizing said crankcase with the fluid at the discharge pressure to decrease said piston stroke and a neutral position closing fluid communication between said discharge cavity and said crankcase when the suction pressure is higher than a predetermined set-point, while opening fluid communication between said suction cavity and said crankcase for pressurizing said crankcase with the fluid at the suction pressure to increase said piston stroke; and said control valve including an actuator port having a closed position and an open position, and in fluid communication with said discharge cavity for providing the fluid at the discharge pressure to said member for biasing said member to have the predetermined set-point correspond to a first set-point when the actuator port is closed, and biasing said member to have the predetermined set-point correspond to a second set-point, different from the first set-point, when the actuator is open.