Fuel injection device for internal combustion engines

Details Fuel injection device for internal combustion engines Fuel injection device for internal combustion engines

1989-10-20

1990-12-25

Kashnikow, Andres

Fluid sprinkling, spraying, and diffusing

Unitary injection nozzle and valve with continuously...

239124, 2395338, F02M 5702

Patent

active

049796763

ABSTRACT:
A fuel injection device for internal combustion engines having a high-pressure pump with a pump work chamber having a fuel injection valve with a pressure chamber, a pressure line connecting the pressure chamber with the pump work chamber. A relief conduit controlled by a relief valve which automatically blocks the relief conduit during the high-pressure phase and opened upon the beginning of the cutoff, for increasing a closing pressure exerted on the fuel injection valve after the end of the injection operation. The pressure line includes a pressure valve which opens in the supply direction and closes upon the beginning of the cutoff. The relief valve is urged in the opening direction by the pressure in the pressure chamber in the high-pressure chamber phase, and opens during flow of fuel from chamber in a direction toward the spring chamber of the injection valve simultaneously with a decrease in pressure in the pump work chamber.

REFERENCES:
patent: 2536542 (1951-01-01), Evans et al.
patent: 3075707 (1963-01-01), Rademaker
patent: 3115304 (1963-12-01), Humphries
patent: 4279385 (1981-07-01), Straubel et al.
patent: 4598863 (1986-07-01), Kanesaka
patent: 4684067 (1987-08-01), Cotter et al.

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