Carburetor for internal combustion engine

Details Carburetor for internal combustion engine Carburetor for internal combustion engine

1977-04-05

1978-03-07

Miles, Tim R.

Gas and liquid contact apparatus

Fluid distribution

Valved

91416, 123119F, F02M 110

Patent

active

040780244

ABSTRACT:
A carburetor has an operator operable butterfly valve and an auxiliary throttle located upstream of the butterfly valve. The auxiliary throttle is urged toward closure by temperature sensitive thermostatic means and is urged toward opening by the airflow drawn by the engine. A pneumatic element subjected to the pressure downstream of the butterfly valve opens the auxiliary throttle to a predetermined extent immediately after cranking. A pneumatic device responsive to the depression downstream of the butterfly valve urges the auxiliary throttle toward closure when the butterfly valve is abruptly opened while the engine is cold. The action of that pneumatic device is of short duration, and consequently the auxiliary throttle returns to its partially open position as acceleration proceeds.

REFERENCES:
patent: 2408104 (1946-09-01), Stanton
patent: 3831567 (1974-08-01), Freismuth et al.
patent: 3872847 (1975-03-01), Charron et al.
patent: 3991731 (1976-11-01), Benjamin

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