Motor vehicle carburetor choke mechanism

Details Motor vehicle carburetor choke mechanism Motor vehicle carburetor choke mechanism

1980-04-10

1981-11-03

Burns, Wendell E.

Internal-combustion engines

Charge forming device

Auxiliary control of carburetor fuel metering

60304, 60307, 261 39B, 261 39E, 26139R, F02B 700, F02B 7510

Patent

active

042979803

ABSTRACT:
An automotive type carburetor is provided with a choke construction that assures opening of the choke valve without the use of vacuum in the event of an electrical failure in the choke assembly, or a failure in the secondary air pump system of the engine; the choke housing being supplied with hot air under pressure from the engine secondary air pump to warm the choke bimetal, the choke assembly also including a PTC heater element to independently warm the bimetal, either heating means being adequate to assure opening of the choke valve within a desired time in the event of a failure of the other heating means.

REFERENCES:
patent: 3791144 (1974-02-01), Lang
patent: 3877223 (1975-04-01), Layton
patent: 3965224 (1976-06-01), Freismuth
patent: 4038819 (1977-08-01), Yoshikawa et al.

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