US 2002/0060374 A1 · Fuel-air mixer

Abstract

An apparatus for atomizing liquid fuel while mixing it with air, and varying the amount of each while maintaining a substantially constant fuel/air ratio for the intake manifold of an engine. The apparatus includes a frame (16) forming a passage (14) with a throat (44), with a second wall (56) of the passage being moveable toward and away from a stationary first wall (54) of the passage to vary the cross-section of the passage and thereby vary airflow. A fuel-carrying tube (24) has a proximal end (60) fixed to the first stationary wall and has a distal portion (62) that extends through a bore (64) in the moveable wall and with the moveable wall being slideable around the tube. The tube has at least one aperture (70) for flowing fuel into the passage, with the exposed aperture area being progressively increased as the moveable wall moves away from the stationary wall to flow a progressively increasing amount of fuel into the passage. The moveable wall is moved by a lever (134) that can be moved by the throttle of the engine.

Claims16

Dependent claims

Apparatus for producing a combustible air-fuel mixture for an engine, comprising:

a frame forming a passage through which air can flow in a downstream direction, said passage having opposite passage side walls, and opposite passage ends;
a first end wall that forms a first of said passage ends and a moveable second end wall that forms a second of said passage ends, said movable second end wall being moveable closer and further from said first end wall to vary the cross-sectional area of the passage;
said moveable second end wall has a bore extending substantially parallel to movement of said moveable second end wall;
a fuel-carrying tube slideably projecting through said bore but fixed with respect to said frame, so as said moveable second end wall moves progressively away from said first end wall, a progressively increasing length of said fuel-carrying tube is progressively exposed to said passage, with said progressively increasing length of tube having at least one perforation with perforation areas exposed to said passage that progressively increase in area as said moveable second end wall moves away from said first end wall.

1 more element

Apparatus for producing a combustible air-fuel mixture to power an engine, comprising:

a frame forming a through passage that has longitudinally spaced upstream and downstream passage parts, opposite passage side walls, and opposite passage ends, said passage having an air inlet that converges in a downstream direction toward a throat, and an outlet that diverges in a downstream direction away from said throat;
a first end wall that forms a first of said passage ends, and a moveable second end wall that forms a second of said passage ends, said second end wall being moveable closer and further from said first end wall to vary the cross-sectional area of the passage;
a lever pivotally coupled to said frame and coupled to said moveable second end wall to move said moveable second end wall toward and away from said first end wall.

Dependencies are inferred from the claim text.

Fuel-air mixer

Life of this patent

Fuel-air mixer

Life of this patent

Abstract

Claims16