FUEL SYSTEM AND CONSTANT GAS PRESSURE GOVERNOR FOR A SINGLE-CYLINDER, FOUR-STROKE CYCLE ENGINE

A fuel system for a single-cylinder internal combustion gas engine comprising a constant gas pressure governor (90) that is situated in a gas supply line (108, 112) extending to the throat of a venturi carburetor, the gas pressure governor (90) including a diaphragm-operated gas valve that responds...

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Bibliographic Details
Main Author LAMBERT, JOHN, E
Format Patent
LanguageEnglish
French
Published 20.01.1994
Edition5
Subjects
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Summary:A fuel system for a single-cylinder internal combustion gas engine comprising a constant gas pressure governor (90) that is situated in a gas supply line (108, 112) extending to the throat of a venturi carburetor, the gas pressure governor (90) including a diaphragm-operated gas valve that responds to changes in static pressure on the upstream side of the venturi of the carburetor, the governor (90) being adapted to compensate for changes in venturi throat pressure due to the opening and the closing of the intake valve for the single-cylinder engine, whereby the governor (90) tends to maintain a uniform air/fuel ratio throughout a large engine speed range. L'invention se rapporte à un circuit d'alimentation destiné à un moteur à gaz à combustion interne monocylindrique comportant un régulateur (90) assurant une pression constante du gaz situé dans un tuyau d'alimentation (108, 112) de gaz s'étendant jusqu'à l'étranglement d'un carburateur à venturi, le régulateur (90) de pression du gaz comprenant un robinet à gaz actionné par un diaphragme qui répond aux variations de pression statique sur le côté amont du venturi du carburateur. Le régulateur (90) est conçu pour compenser les variations de pression au niveau de l'étranglement du venturi, dues à l'ouverture et à la fermeture de la soupape d'admission du moteur monocylindrique, et tend à maintenir un rapport air/carburant constant sur toute une plage de régime moteur.
Bibliography:Application Number: WO1993US06056