Fuel injection apparatus

Details Fuel injection apparatus Fuel injection apparatus

1976-01-23

1978-01-24

Feinberg, Samuel

Internal-combustion engines

Intake manifold

Manifold tuning, balancing or pressure regulating means

123139E, F02M 3900

Patent

active

040698009

ABSTRACT:
A servo piston is driven to compress fuel in a pressure chamber which communicates with a needle valve which is spring biased to block communication between the pressure chamber and a fuel injection nozzle. When the fuel pressure exceeds a value equivalent to the preload of the spring, the pressurized fuel moves the needle valve off its seat so that fuel from the pressure chamber is injected into an engine through the injection nozzle. Further movement of the servo piston unblocks a port to allow fuel at supply pressure to act on the needle valve in the same direction as the spring to sharply seat the needle valve and cleanly terminate fuel injection. Further movement of the servo piston uncovers another port so that the pressure chamber is depressurized through connection with the supply and the needle valve is firmly held on its seat.

REFERENCES:
patent: 3796206 (1974-03-01), Links
patent: 3810453 (1974-05-01), Wolfe
patent: 3921604 (1975-11-01), Links

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