Patent ID: 8807121

Claim:
A pressure control device for controlling a pressure of fuel supplied from a fuel tank to an engine via a fuel pump, comprising: a fuel storage chamber capable of storing fuel pressurized by the fuel pump; a valve seat provided at an outflow port of the fuel storage chamber, from which the fuel stored in the fuel storage chamber outflows; a valve movable in a first direction toward the valve seat and a second direction away from the valve seat, wherein the valve can close the outflow port when the valve is seated on the valve seat, and the valve can open the outflow port when the valve is positioned away from the valve seat; a biasing spring applying a first force to the valve in the first direction; a valve opening device applying a second force to the valve in the second direction based on a pressure of the fuel stored in the fuel storage chamber; and a pressure load applying device applying a third force to the valve in the second direction; wherein a pressure of the fuel supplied to the engine is controlled based on the relationship between the first, second and third forces; and wherein the pressure load applying device is arranged on a same side as the fuel storage chamber with respect to the valve, so that the third force of the pressure load applying device is applied only in the second direction.