Pneumatic pressure control valve assembly

Details Pneumatic pressure control valve assembly Pneumatic pressure control valve assembly

1977-05-20

1979-10-16

Schwadron, Martin P.

Internal-combustion engines

Intake manifold

Manifold tuning, balancing or pressure regulating means

123 97B, F02M 2506

Patent

active

041709713

ABSTRACT:
A pneumatic pressure control system which controls the ratio of fuel to air in the intake manifold of the engine includes a valve assembly which is operative in response to the combined action of the negative pressure existing in the intake manifold and positive pressure from an air pump operated by the engine. When the sum of the negative and positive pressures acting on opposite sides of a diaphragm are sufficient to overcome a spring force on the negative pressure side of the diaphragm the movement of the diaphragm will cause the operation of the valve to admit atmospheric air pressure either directly into the intake manifold or to a fuel regulating device to operate a further valve to reduce the supply of fuel to the carburetor.

REFERENCES:
patent: 2728547 (1955-12-01), Crookston et al.
patent: 3669083 (1972-06-01), Fort
patent: 3858842 (1975-01-01), Yoshimura
patent: 4053543 (1977-10-01), Petititt
patent: 4071006 (1978-01-01), Harada

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