Choke control

Details Choke control Choke control

1975-06-30

1977-11-15

Burns, Wendell E.

Internal-combustion engines

Intake manifold

Manifold tuning, balancing or pressure regulating means

261 39R, 261 39E, 219206, F02D 1108

Patent

active

040580970

ABSTRACT:
An automotive choke control with improved heating and cooling characteristics to more closely reflect an analogue of the engine temperature for reducing the pollutant content of automotive exhaust gases by regulating the choke. In the control two self-regulating electrical resistance heaters energizable under different conditions supply heat to a thermostat metal coil arranged to move and to open a choke valve as heated. A slotted heat sink plate with a rolled lip is positioned between the heaters and the coil to quickly and uniformly transfer heat to the coil while limiting the heat loss radially outward to the choke housing in which the control is contained. A thermally insulating gasket is also used to further thermally isolate the control from the housing. Additionally a conductive metal top hat is positioned on the opposite side of the coil from the plate to enhance quick, uniform heating and slow cool down.

REFERENCES:
patent: 2031709 (1936-02-01), Hunt
patent: 3752133 (1973-08-01), Irish et al.
patent: 3806854 (1974-04-01), Armstrong
patent: 3907943 (1975-09-01), Tateno et al.

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