Fuel injection apparatus

Details Fuel injection apparatus Fuel injection apparatus

1985-08-28

1986-06-10

Miller, Carl Stuart

Internal-combustion engines

Charge forming device

Fuel injection system

123500, 239 95, F02M 3900

Patent

active

045936641

ABSTRACT:
The fuel injection apparatus of the invention comprises a unit injector for injecting fuel to a combustion chamber of an internal combustion engine. An injection pump chamber and a timing chamber are defined in the unit injector, a quantity of fuel, adjusted in accordance with a drive condition of an engine, being supplied to these chambers. Fuel in the injection pump chamber and the timing chamber can be pressurized by an injection plunger and a timing plunger operated by pressure from the same pressure source. When the fuel in the injection pump chamber is pressurized to a predetermined injection pressure, fuel in the injection pump chamber is injected to the corresponding combustion chamber of the engine. The timing chamber is connected to a relief path, and a check valve, which can be opened at a pressure lower than the injection pressure, is provided in the relief path.

REFERENCES:
patent: 4385609 (1983-05-01), Kato
patent: 4396151 (1983-08-01), Kato
patent: 4425894 (1984-01-01), Kato
patent: 4485787 (1984-12-01), Kato
patent: 4537352 (1985-08-01), Kato

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