Air control valve

Details Air control valve Air control valve

1975-04-21

1976-04-06

Hart, Douglas

Power plants

Internal combustion engine with treatment or handling of...

By means producing a chemical reaction of a component of the...

60306, 1376121, 1376275, 417504, F02B 1510

Patent

active

039480453

ABSTRACT:
An air control valve for directing the flow of air from an internal combustion engine driven pump and including differential pressure actuating means includes a pilot valve responsive to engine induction vacuum level to provide induction vacuum, atmospheric air or air from the pump to the actuating means. The pilot valve includes a chamber having openings communicating with the pump and the actuating means, a restricted orifice to atmosphere, a valve element capable of selectively closing either of the openings, a differential pressure motor actuated by induction vacuum and a tube projecting through the actuating means opening into the chamber, the tube being axially positionable by and in communication with the differential pressure motor to co-act with the valve member and openings to supply high pressure air, atmospheric air or induction vacuum to the actuating means according to the level of induction vacuum.

REFERENCES:
patent: 3805522 (1974-04-01), Sheppard
patent: 3853269 (1974-12-01), Graber
patent: 3869858 (1975-03-01), Goto

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