Fuel injector

Details Fuel injector Fuel injector

1975-10-29

1979-04-17

Cox, Ronald B.

Internal-combustion engines

Intake manifold

Manifold tuning, balancing or pressure regulating means

123139DP, 123 32JV, 2395337, 2395339, F02M 3900, F02B 300

Patent

active

041495063

ABSTRACT:
This disclosure deals with a fuel injector for an internal combustion engine. The injector includes an injector body having a fuel metering chamber formed therein which receives fuel from a fuel supply. A plunger is movable into the chamber in an injection stroke to force fuel from the chamber and out of the injector through spray holes. A valve member is mounted in the path of fuel flow from the chamber to the spray holes, the valve member being movable between first and second positions. In the first position, the valve member seals the path and prevents air in the combustion chamber from mixing with the fuel being metered into the metering chamber, and in the second position the valve member closes the spray holes to terminate injection. During an injection stroke, the plunger moves the valve member from the first position toward the second position, and fuel injection takes place while the valve member is intermediate the first and second positions. The valve member is also subjected to hydraulic forces at the end of the injection stroke, which move the valve member into the second position in order to abruptly terminate injection.

REFERENCES:
patent: 2015887 (1935-10-01), Eek
patent: 2512644 (1950-06-01), Hauber

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