Outer vent control device for a carburetor

Details Outer vent control device for a carburetor Outer vent control device for a carburetor

1986-03-24

1988-03-15

Cox, Ronald B.

Internal-combustion engines

Charge forming device

Fuel flow regulation between the pump and the charge-forming...

123520, F02M 3302

Patent

active

047305924

ABSTRACT:
An outer vent control device for use with a carburetor includes a valve housing adapted to be attached to the outer wall of a float chamber in thermally conductive relation, a first control valve disposed in the valve housing and openable when the engine stops its operation, and a second thermosensitive control valve disposed in the valve housing and closable when the temperature of the float chamber drops below a preset temperature. The second thermosensitive control valve includes a thermosensitive unit and a cover attached to a valve housing thereof in covering relation to the thermosensitive unit. The second thermosensitive control valve also has a valve seat member with a valve seat disposed in the valve housing and a valve body movably disposed in the valve housing and seatable on the valve seat. The valve body has an upper conical surface facing an inlet port remotely from the valve seat. The cover has a ventilation hole defined in the bottom thereof at a lowermost position thereon.

REFERENCES:
patent: 4191154 (1980-03-01), Shibata
patent: 4258685 (1981-03-01), Arai
patent: 4432328 (1984-02-01), Shimizu
patent: 4577607 (1986-03-01), Nishio

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