Patent ID: 6363914
Filing Date: 2002-04-02
Classification: F02D,F02M

Abstract:
An accumulator fuel injection system comprising:a first accumulation chamber for containing high-pressure fuel supplied by a fuel supply pump; a first electromagnetic valve device provided in a fuel passage, which connects said first accumulation chamber with a fuel injection valve, said first electromagnetic valve switching said fuel passage between a connected state or a disconnected state; a branch passage branched from said fuel passage at downstream side of said first electromagnetic device, said branch passage having sufficiently lower constant fuel pressure than fuel pressure in said first accumulation chamber; a second electromagnetic valve device provided in a fuel return passage extending from said fuel injection valve to a fuel tank, said second electromagnetic valve device switching fuel, injected from said fuel injection valve, between an injected state and an uninjected state; and control means for opening said first electromagnetic valve device prior to opening of said second electromagnetic valve device and then opening said second electromagnetic valve device.