Air flow control unit for engine secondary air supply

Details Air flow control unit for engine secondary air supply Air flow control unit for engine secondary air supply

1974-07-05

1976-01-27

Hart, Douglas

Power plants

Internal combustion engine with treatment or handling of...

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

60307, 60410, 137118, F02B 7510, G05D 1100

Patent

active

039344134

ABSTRACT:
In a system for delivering air from an air pump to an exhaust system and accessories for an internal combustion engine, an air flow control unit has a high pressure relief valve, an outlet open to the exhaust system, a vent open to the atmosphere and an outlet open to the accessories with a check valve therein. A valve member is movable in response to an engine signal between a first position closing the exhaust system outlet and a second position closing the vent; and a low pressure relief valve is included in the vent to maintain a minimum low pressure in the unit when the valve member is in its first position.

REFERENCES:
patent: 3812673 (1974-05-01), Muroki
patent: 3818702 (1974-06-01), Woo

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