Fuel injection system for an internal combustion engine

Details Fuel injection system for an internal combustion engine Fuel injection system for an internal combustion engine

1979-03-20

1982-06-15

Levy, Stuart S.

Internal-combustion engines

Charge forming device

Fuel injection system

261 64C, F02M 3900, F02M 102

Patent

active

043345115

ABSTRACT:
A vacuum-operated air-valve actuator has a vacuum chamber held in communication with the intake air passage not only at a point between the air valve and the throttle valve but also at a point on the downstream side of the latter. In low load engine operation, the actuator is fed with a relatively high vacuum occurring on the downstream side of the throttle as well as with a lower vacuum in the Venturi and acts to increase the opening of the air valve. As the result, the vacuum in the Venturi, under which a fuel metering device operates, is reduced and accordingly the amount of fuel metered out is reduced to minimize the density of unburnt ingredients in the engine exhaust gases.

REFERENCES:
patent: 2837072 (1958-06-01), Zupancic
patent: 2896541 (1959-07-01), Barton
patent: 2957464 (1960-10-01), Dolza
patent: 3956433 (1976-05-01), Garcea
patent: 3996906 (1976-12-01), Bobniak
patent: 3999528 (1976-12-01), Knapp et al.
patent: 4128086 (1978-12-01), Garcea
patent: 4153018 (1979-05-01), Kimata et al.
patent: 4174692 (1979-11-01), Wessel et al.

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