Fuel system for internal combustion engine

Details Fuel system for internal combustion engine Fuel system for internal combustion engine

1977-12-29

1979-04-24

Lazarus, Ira S.

Internal-combustion engines

Igniters

Incandescent

123139ST, 123179L, 123198F, F02M 6302

Patent

active

041506510

ABSTRACT:
The disclosure illustrates a fuel control valve for a fuel system of a compression ignition engine which utilizes unit fuel injectors operating on the principle that the fuel pressure applied to the injectors determines the quantity of fuel injected into the engine cylinders. The fuel control valve is connected in the supply line for half of the injectors of the engine. The valve has a plunger which blocks off flow to these injectors whenever the fuel system pressure is below a predetermined level. When the pressure exceeds that level, the plunger displaces to a position where it permits flow to the injectors and offers a minimum restriction to flow. The pressure level is set at a level which reflects engine operation above idle but below normal engine operating conditions. The net effect is to substantially reduce the generation of white smoke during engine startup and while idling for extended periods of time while not affecting normal engine operating conditions. The selective termination of fuel to a portion of the cylinders has a beneficial effect on other engine emissions.

REFERENCES:
patent: 2919686 (1960-01-01), Mich
patent: 3667439 (1972-06-01), Muir
patent: 3741685 (1973-06-01), Simko
patent: 3896779 (1975-07-01), Omou et al.
patent: 3902472 (1975-09-01), Baugelin
patent: 3943902 (1976-03-01), Skinner
patent: 3976042 (1976-08-01), Baguelin
patent: 4050434 (1977-09-01), Zbikowski et al.

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