Integral air switching diverter valve

Details Integral air switching diverter valve Integral air switching diverter valve

1976-10-22

1978-01-31

Hart, Douglas

Power plants

Internal combustion engine with treatment or handling of...

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

60306, F02B 7510

Patent

active

040708306

ABSTRACT:
In a system for delivering secondary air from an air pump to either the exhaust manifold, preferably, closely adjacent to the exhaust ports, or to a converter in the exhaust system of an internal combustion engine, an integral air switching diverter valve assembly having an inlet connected to the air pump, a primary discharge outlet for delivery of air to the exhaust manifold and a secondary discharge outlet for delivery of air to the converter, a valve being mounted in the assembly for movement between a first or converter mode position at which it is normally positioned to allow secondary air flow to the converter while blocking secondary air flow to the exhaust manifold and a second or port mode position to allow secondary air flow to the exhaust manifold while blocking air flow to the converter, the assembly including a differential pressure operated switching diaphragm assembly used to effect movement of the valve between the port and converter modes, a divert timing assembly operative during deceleration to effect switching to the converter mode, and a pressure relief outlet which is operative during the port or converter switching modes to discharge, at a selected pressure, excess secondary air to the atmosphere.

REFERENCES:
patent: 3738109 (1973-06-01), Tatsutomi
patent: 3924408 (1975-12-01), Beiswenger
patent: 3924409 (1975-12-01), Heilman
patent: 3934413 (1976-01-01), Beiswenger
patent: 3948045 (1976-04-01), Budinski
patent: 3955364 (1976-05-01), Lewis
patent: 3975905 (1976-08-01), Shimo

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