Internal-combustion engines – Intake manifold – Manifold tuning – balancing or pressure regulating means
Patent
1974-11-20
1976-08-03
Burns, Wendell E.
Internal-combustion engines
Intake manifold
Manifold tuning, balancing or pressure regulating means
261 39E, F02D 1108, F02M 110, F02M 2304
Patent
active
039723119
ABSTRACT:
An electrical heating means for the bimetallic thermostatic spring controlling a carburetor automatic choke valve is in series with a negative temperature coefficient thermistor which senses engine temperature to open the choke valve in a more efficient manner and improve engine performance during warm-up. A temperature responsive switch is in series with the heater, negative temperature coefficient thermistor and a battery and senses engine block temperature to maintain current flowing in the heater after the engine is shut off and until the entire engine cools down, to provide better warm-engine restarts and reduce pollution.
REFERENCES:
patent: 3534720 (1970-10-01), Du Bois
patent: 3699937 (1972-10-01), De Petris
patent: 3752133 (1973-08-01), Irish et al.
patent: 3763837 (1973-10-01), Orlando
patent: 3768453 (1973-10-01), Hurst
patent: 3800767 (1974-04-01), Winkley
patent: 3806854 (1974-04-01), Armstrong
patent: 3818881 (1974-06-01), Hosho et al.
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