Air switching diverter valve

Details Air switching diverter valve Air switching diverter valve

1976-10-22

1977-12-06

Hart, Douglas

Power plants

Internal combustion engine with treatment or handling of...

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

F01N 310

Patent

active

040609847

ABSTRACT:
An air switching diverter valve assembly for use with an internal combustion engine to control the flow of secondary air from an air pump, the air switching diverter valve assembly including a housing having a valve chamber therein with an inlet from the air pump to the valve chamber, a first outlet to supply air to the engine exhaust manifold, a second outlet to supply air either to the converter or to the atmosphere, depending on the intended use of the valve in an engine system, and a pressure valve controlled third outlet, a valve movably positioned in the valve chamber for control of flow out through either the first outlet or the second outlet, a switching diaphragm assembly being operatively connected to the valve for actuation thereof and positioned in the housing to form therewith first and second chambers on opposite sides of the switching diaphragm, the second chamber being connected to receive an engine manifold vacuum signal and, a divert timing assembly positioned in the second chamber and attached to one side of the switching diaphragm whereby vacuum leakage from this air switching diverter valve assembly is reduced to a minimum.

REFERENCES:
patent: 3888222 (1975-06-01), Tomita
patent: 3905193 (1975-09-01), Heilman
patent: 3924408 (1975-12-01), Beiswenger
patent: 3948045 (1976-04-01), Budinski
patent: 3974807 (1976-08-01), Nohira
patent: 3982515 (1976-09-01), Bradshaw

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