Method and apparatus for carburetion
AssigneeDresser Industries, Inc.
InventorWarren E. Snyder
Life of this patent
Estimating the term…
Abstract
A fuel system includes a carburetor wherein the throttle valves for the air and fuel are located upstream of the mixing chamber and are moved conjointly to maintain the desired air/fuel ratio over a variation in engine speed. The desired changes in air/fuel ratio can be made by, in one embodiment, utilizing a throttle valve in an auxiliary air passageway whereby more or less air is added to the mixture and too, by providing for the relative angular displacement of the air throttle valve as compared to the full throttle valve while maintaining conjoint movement thereof once the desired air/fuel ratio has been attained.
Claims5
An improved carburetor for a gaseous fueled engine wherein said engine includes an intake manifold and a fuel supply, said carburetor comprising:
- a body having inlet and outlet ends, an air passageway extending therethrough intersecting said ends, a fuel supply passageway for connection with said fuel supply, and a mixing chamber located adjacent to said outlet end and communicating with said air and fuel supply passageways;
- fuel and air control means located in said fuel supply and air passageway, respectively, for conjointly controlling flow through said passageways, said fuel and air control means including an air valve member located in said air passageway upstream of said mixing chamber, a fuel valve member located in said supply passageway upstream of said mixing chamber, and including a shaft rotatable in said body having both valve members mounted thereon for conjoint movement with said shaft;
- and,
- auxiliary control means for varying the air/fuel ratio to the intake manifold, said auxiliary control means including an auxiliary air passageway in said body extending from adjacent said inlet end to said mixing chamber a valve member located in said auxiliary air passageway upstream of said mixing chamber, and a shaft rotatable in said body having said last mentioned valve member mounted thereon.
Dependencies are inferred from the claim text.