Patent ID: 8522751

Claim:
A fuel pressure regulation system for a motor vehicle, comprising: a fuel pressure regulator including a first fluid port for receiving pressurized fuel, a second fluid port in fluid communication with a fuel rail and a third fluid port for returning fuel to a fuel tank; a fluid filled member being filled with a fluid having an adjustable viscosity, the fluid filled member including a set of electrodes and being capable of deforming; a sealing member mounted to an end portion of the fluid filled member, the sealing member having a closed position that prevents fluid communication between the first fluid port and the third fluid port and the sealing member having an open position that allows fluid communication between the first fluid port and the third fluid port, the position of the sealing member being determined by the pressure inside the fuel pressure regulator and a viscosity of the fluid; and an electronic control unit configured to send electrical signals to the electrodes, the electronic control unit adjusting a regulated pressure of the fuel pressure regulator by sending electrical signals to the electrodes in order to adjust the viscosity of the fluid.