Device for supplying fuel to an internal combustion engine
AssigneeSociete Anonyme pour l'Equipement Electrique des Vehicules S.E.V. Marchal
InventorFrancis R. Vidal
Life of this patent
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Abstract
An improved fuel supply system for an internal combustion engine, which sem is of the type including a fuel reservoir connected to a pump to supply the carburetor with more fuel than required by the engine, and a recycling system for recycling the excess fuel to a predetermined point in the fuel supply system upstream of the carburetor. The recycling system includes a recovery chamber for collecting excess fuel, a duct for feeding the excess fuel from the recovery chamber to an intermediate chamber, and a duct feeding fuel from the intermediate chamber back into the supply system at the predetermined point. The last-mentioned duct is controlled by a float valve responsive to the level of fuel in the intermediate chamber.
Claims11
In a device for supplying a mixture of fuel and combustion gas to an internal combustion motor, which device comprises at least one fluid jet carburetor having fuel inlet and outlet ducts, a fuel reservoir, a pump connected to said inlet duct, a supply duct connecting said reservoir to said pump, and a recycling circuit connected to said outlet duct, the improvement according to which
- said recycling circuit comprises an intermediate chamber supplied by said outlet duct,
- said intermediate chamber being connected to said supply duct upstream of the pump and downstream of the reservoir, and
- means responsive to a sudden change in the level of fuel in said intermediate chamber for gradually changing the flow of fuel from the intermediate chamber to said supply duct
- whereby a sudden change in the volume of fuel flowing through said outlet duct results in a gradual change in the volume of fuel delivered by said intermediate chamber to said supply duct.
A system for supplying fuel to an internal combustion engine comprising, in combination,
- charge forming means for supplying a fuel charge to the engine;
- a fuel reservoir connected to said charge forming means by a supply duct;
- a fuel pump in said supply duct between the fuel reservoir and the charge forming means;
- an intermediate chamber having an inlet connected to receive fuel from said charge forming means and an outlet connected to said supply duct upstream of the pump and downstream of the reservoir to recycle the fuel to the supply duct;
- and
- means responsive to a sudden change in the level of fuel in said intermediate chamber for gradually changing the volume of fuel delivered to said supply duct from the intermediate chamber, so that rapid pressure fluctuations in said supply duct are avoided, and loss of pump priming is minimized.
Dependencies are inferred from the claim text.