Variable venturi carburetor

Details Variable venturi carburetor Variable venturi carburetor

2011-07-05

2011-07-05

Chiesa, Richard L (Department: 1776)

Gas and liquid contact apparatus

Fluid distribution

Valved

C261S050100, C261S057000, C261S059000, C261SDIG012, C261SDIG038, C261SDIG056

Reexamination Certificate

active

07971858

ABSTRACT:
A carburetor includes a main body defining a bore, a main passage and a venturi defined within the bore, and a fuel nozzle carried by the main body and including a fuel nozzle outlet communicating with the venturi. The carburetor may also include a valve member translatable across an axis of the bore, such that in a closed state, the valve member closes the main passage but maintains the venturi at least partially open. The carburetor may also include a needle valve disposed at an end of the fuel nozzle substantially opposite of the fuel nozzle outlet to variably control flow of fuel into a fuel nozzle inlet, and a needle valve transmission may be coupled between a throttle shaft and the needle valve to convert rotation of the throttle shaft to translation of the needle valve.

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