Carburator
OwnerEdward R. Glenninventor
Life of this patent
Estimating the term…
Abstract
A carburator for use in combination with an intake manifold for a multi-cylinder internal combustion engine wherein the manifold has two sets of related tunnels to conduct fuel and air to related sets of cylinders, said carburator having two venturi throats, each related to one set of tunnels, throttle valves in the throats, an air conducting throat related to one set of tunnels, a shut-off valve in the air conducting throat related to one set of tunnels, a shut-off valve in the air conducting throat and means operable to selectively open and close the shut-off valve and to maintain the throttle valve related to said one set of tunnels closed when the shut-off valve is open, whereby the engine can be selectively operated on all cylinders or on only those cylinders with which the shut-off valve is not related.
Claims6
In combination a multi-cylinder internal combusion engine with an intake manifold with two related sets of tunnels, each set of tunnels communicating with one half of the cylinders and each having a common upwardly opening inlet end, said carburator releasably secured to the manifold and having two elongate vertically extending venturi throats, each having a lower end communicating with the inlet end of one set of tunnels in the manifold, an air conducting throat communicating with one of said sets of tunnels, throttle valve members in the lower portions of the venturi throats and a shut-off valve member in the air conducting throat, fuel dispensing idle jets in the venturi throats below the throttle valve members and fuel dispensing high speed jets in the venturi throats above the throttle valve members, fuel delivery means to deliver fuel to the jets, manually operable selector means to selectively move the shut-off valve member between open and closed positions and to hold the one throttle valve member in the venturi throat communicating with said one set of tunnels in a closed position when the shut-off valve member is in an open position and manually operable throttle valve operating means to synchronously shift the throttle valve members between open and closed positions when said one throttle valve member is not held closed and to shift the other throttle valve member between open and closed positions when said one throttle valve member is held closed.
In combination, an eight cylinder reciprocating internal combusion engine, an intake manifold with first and second sets of four tunnels, each set conducting fuel and air to four of the cylinders of the engine and each set having a common upwardly opening inlet end, a carburator mounted on the manifold and having first and second elongate vertically extending and opening venturi throats communicating with the inlet end of the first and second set of tunnels, respectively, an elongate vertically extending and opening air throat communicating with the inlet end of the second set of tunnels, first and second butterfly throttle valves in the first and second venturi throats and pivotally carried by first and second shafts extending through and projecting outward from the carburator, idle and high speed fuel metering jets communicating with the venturi throats above and below the throttle valves, and fuel delivery means delivering fuel to the jets, a butterfly shut-off valve in the air throat and pivotally carried by an operating shaft extending through and projecting outwardly from the carburator, throttle valve operating means including manually operable link and lever means drivingly engaging an end of said first shaft and operable to open and close the first throttle valve and a yieldable torsion spring drive coupling between the first and second shafts, selector means connected with the operating shaft and coupled with that shaft to selectively open and close the shut-off valve and to hold the second throttle valve closed against the resistance of the coupling when the shut-off valve is open.
Dependencies are inferred from the claim text.