Patent ID: 7874151

Claim:
A hydraulic circuit operably associated with a vehicle, the hydraulic circuit including a variable displacement pump operated by an engine, the hydraulic circuit comprising: a first hydraulic actuator controlled by a first valve responsive to a first command signal, the first valve fluidly connected to an outlet of the pump; a second hydraulic actuator controlled by a second valve responsive to a second command signal, the second valve fluidly connected in series with the first valve, the first valve disposed between the second valve and the outlet of the pump; a sensor disposed in fluid communication with an intermediate conduit fluidly connecting the first valve with the second valve and measuring a pressure, the sensor relaying a signal to the electronic controller; the electronic controller disposed to operate in a first mode of operation when at least one of the first and second command signals is active; and the electronic controller disposed to operate in a standby mode of operation when the first and second command signals are inactive, the controller varying the displacement of the pump based on the signal.