Variable flow elastic nozzle
First Claim
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1. A device for preparing a carburized mixture for an internal combustion engine comprising:
- means defining a venturi throat in a fluid conduit;
at least one wall element in the zone of the throat of the venturi being constituted by at least one flexibly deformable chamber member under the action of pressure from a regulating fluid;
said flexibly deformable chamber member being sheathed locally by at least one deformable nozzle member subjected to the pressure of at least one regulating fluid assuring local, controlled deformation of the nozzle member to be regulated wherein said venturi throat has an inlet duct for liquid or gaseous fuel, located in the body of a double down-draft carburetor, said carburetor including a first and second barrel member with said deformable nozzle member being disposed in said second barrel member so as to permit a variation in the annular section between the inlet duct and itself in response to a pressure condition in said first chamber and further comprising a hollow, cylindrical element disposed along the axis of said deformable nozzle member including radial passages for feeding said fuel into said venturi throat at a position located above said throat.
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Abstract
A variable-venturi nozzle for the measurement and regulation of flows in gas conduits, in particular in internal combustion engine intakes, wherein at least one wall element in the zone of the venturi throat thereof is in the form of at least one elastic wall deformable under the action of the pressure of a control fluid.
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Citations
3 Claims
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1. A device for preparing a carburized mixture for an internal combustion engine comprising:
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means defining a venturi throat in a fluid conduit; at least one wall element in the zone of the throat of the venturi being constituted by at least one flexibly deformable chamber member under the action of pressure from a regulating fluid; said flexibly deformable chamber member being sheathed locally by at least one deformable nozzle member subjected to the pressure of at least one regulating fluid assuring local, controlled deformation of the nozzle member to be regulated wherein said venturi throat has an inlet duct for liquid or gaseous fuel, located in the body of a double down-draft carburetor, said carburetor including a first and second barrel member with said deformable nozzle member being disposed in said second barrel member so as to permit a variation in the annular section between the inlet duct and itself in response to a pressure condition in said first chamber and further comprising a hollow, cylindrical element disposed along the axis of said deformable nozzle member including radial passages for feeding said fuel into said venturi throat at a position located above said throat. - View Dependent Claims (2, 3)
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Specification