Internal-combustion engines – Charge forming device – Fuel injection system
Patent
1992-08-27
1994-03-22
Miller, Carl S.
Internal-combustion engines
Charge forming device
Fuel injection system
123467, F02M 4100
Patent
active
052954692
ABSTRACT:
A safety valve provided in a fuel injection apparatus includes an accumulator in which fuel is accumulated. The housing has an inside passage for introducing high-pressure fuel of the accumulator into the inside of the housing and a seat face formed at a portion of the inside passage. A valve element provided movably within the housing includes a valve body to open/close the seat face and an elastic member for pressing and biasing the valve element in a closing direction. A fuel chamber defined between the inner surface of the housing and the valve element maintains pressure for pressing the valve element in a valve-opening direction, and high pressure fuel from the inside passage is introduced into the fuel chamber when the valve body of the valve element is separated from the seat face. With this safety valve, the high-pressure fuel of the accumulator is introduced into the fuel chamber in order to press the valve element in the valve-opening direction so that the valve element will be rapidly opened, with the result that the fuel pressure in the accumulator can recover a predetermined value instantaneously.
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Funai Kenji
Kariya Yasuhiro
Miller Carl S.
Nippondenso Co. Ltd.
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