Fuel mixture adjusting and limiting device

Gas and liquid contact apparatus – Fluid distribution – Valved

Patent

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Details

137382, 251227, 261 71, 261DIG38, 261DIG84, F02M 310

Patent

active

060038454

ABSTRACT:
A fuel mixture adjusting and limiting device for a carburetor has a body received in a bore of the carburetor and defining a fuel passage through which liquid fuel is supplied to the high and/or low speed system of the carburetor, an inlet opening in the body through which fuel enters the fuel passage from a metering chamber of the carburetor and a metering pin slidably carried by the body and capable of at least partially restricting the flow of fuel through the inlet opening to control the flow rate of fuel through the body. An adjustment screw threadably received in the bore of the carburetor is rotatable to axially displace the adjustment screw and during at least a portion of the axial range of movement of the adjustment screw, the adjustment screw bears on the metering pin to axially displace the metering pin and thereby control the flow area of the inlet opening. Preferably, the adjustment screw carries an adjustment pin which is axially displaceable relative to the adjustment screw and constructed to engage the metering pin to displace it. The axial location of the adjustment pin relative to the adjustment screw can be varied to alter the relationship between the adjustment screw and the metering pin.

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patent: 5322645 (1994-06-01), Hammett et al.
patent: 5667734 (1997-09-01), Ohgane
patent: 5707561 (1998-01-01), Swanson
patent: 5753148 (1998-05-01), King et al.
patent: 5772927 (1998-06-01), Koizumi et al.

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