Engine shutdown control

Details Engine shutdown control Engine shutdown control

1977-05-11

1978-09-05

Myhre, Charles J.

Internal-combustion engines

Accessories

Covers, trays, vibrators, corrosion inhibitors, air filters

123DIG11, 123 97B, 123136, F02B 7708

Patent

active

041111761

ABSTRACT:
A carburetor having a venturi constriction within an air passage leading to the engine intake manifold, a fuel bowl with a discharge nozzle for delivering fuel to the venturi constriction, and a bowl vent passage between the fuel bowl and a position at atmospheric pressure, includes a duct communicating between the venturi constriction and the fuel bowl. A solenoid valve is disposed in the bowl vent passage and is operatively connected to the ignition; the valve is open when the ignition is turned on so that the fuel bowl is exposed to atmospheric pressure allowing the nozzle to discharge fuel into the venturi constriction, and it is closed when the ignition is turned off. With the valve closed, the pressures in the venturi constriction and the fuel bowl are equalized preventing the flow of fuel through the nozzle to the venturi constriction and inhibiting "dieseling" after ignition shut-off.

REFERENCES:
patent: 3374777 (1968-03-01), Walker
patent: 3517653 (1970-06-01), Hajime Ariga et al.
patent: 3618581 (1971-11-01), Simonet
patent: 3802403 (1974-04-01), Dewick et al.

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