Diaphragm carburetor for internal combustion engine

Details Diaphragm carburetor for internal combustion engine Diaphragm carburetor for internal combustion engine

1987-08-13

1988-09-06

Miles, Tim

Gas and liquid contact apparatus

Fluid distribution

Pumping

261DIG68, 261DIG81, F02M 1704

Patent

active

047691859

ABSTRACT:
A diaphragm carburetor with a fuel metering chamber designed for easy restart when hot which includes a separate escape chamber connected to the metering chamber having a second diaphragm controlled exhaust valve. The second diaphragm is subject to positive crankcase pressure during engine operation to maintain the exhaust valve closed. When the engine is stopped, the exhaust valve is opened by a spring and fuel in the metering chamber will move into the escape chamber and out of the carburetor rather than be forced into the fuel mixing passage and venturi of the carburetor.

REFERENCES:
patent: 3177920 (1965-04-01), Phillips
patent: 3235238 (1966-02-01), Martin et al.
patent: 3738622 (1973-06-01), Tuckey
patent: 4271093 (1981-06-01), Kobayashi
patent: 4597915 (1986-07-01), Nagase et al.

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