Patent ID: 7363918
Filing Date: 2008-04-29
Classification: F02D,F02M

Abstract:
1. A controller of a pressure accumulation fuel system having a pressure accumulation vessel for accumulating fuel at high pressure corresponding to injection pressure, a fuel supply pump for pressurizing the fuel in a fuel tank to the high pressure and for pressure-feeding the fuel to the pressure accumulation vessel, and a fuel injection valve for injecting the high-pressure fuel supplied from the pressure accumulation vessel to an engine and for leaking part of the high-pressure fuel, the pressure accumulation fuel system returning the leak fuel leaking from the fuel injection valve to the fuel tank, the controller comprising: a remaining amount sensing device that senses a remaining amount of the fuel in the fuel tank; and a heat amount restricting device that restricts a heat amount of the leak fuel of the fuel injection valve based on the fuel remaining amount sensed by the remaining amount sensing device.