Altitude compensation in carburetor choke systems

Details Altitude compensation in carburetor choke systems Altitude compensation in carburetor choke systems

F - Mech Eng,Light,Heat,Weapons

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M

123/64

F02M 1/10 (2006.01) F02M 19/08 (2006.01)

Patent

CA 1036443

ALTITUDE COMPENSATION IN CARBURETOR CHOKE SYSTEMS ABSTRACT OF THE DISCLOSURE In a carburetor having a choke mechanism including a thermostatically responsive bimetallic coiled spring that exerts an increasing closing force on the choke valve as the temperature decreases below the normal engine operating level, an intermittently operable heater device is provided adjacent the bimetallic spring to reduce the spring closing force on the choke valve when operable. The heater device is rendered operable by an engine vacuum responsive switch to compensate for increases in altitude which would tend to decrease manifold vacuum. The heater device is also and alternatively rendered operable by a temperature sensitive switch to achieve more rapid choke valve opening once a predetermined temperature level has been achieved. - 1 -

286822

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