Carburetor having a one-piece body

Details Carburetor having a one-piece body Carburetor having a one-piece body

F - Mech Eng,Light,Heat,Weapons

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F02M 19/10 (2006.01) F02M 1/04 (2006.01) F02M 9/10 (2006.01)

Patent

CA 1120353

CARBURETOR HAVING A ONE-PIECE BODY ABSTRACT A variable venturi down-draft carburetor comprises a one-piece unitary casting that defines an induction passage and upwardy open cavities constituting a float chamber and a recess in which a movable venturi member is housed. A throttle valve, main fuel jet, and venturi member are all housed wholly within the confines of the casting, and the casting is covered by a single plate that closes the upwardly open cavities and defines an air inlet orifice to the induction passage. By housing the throttle valve, main jet and venturi in one unit, operation of the carburetor is unaffected by variations in the cover plate produced by manufacturing tolerances. Access to the interior of the carburetor is achieved simply by removal of the plate, which does not, in itself, affect the adjustment of the carburetor. The casting preferably includes integral mountings for a vacuum motor, and/or acceleration pump, and/or an automatic choke.

334047

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