This pump consists of a compression chamber adapted to be coupled to a source of fuel fuel injection nozzles a rotary plunger rotatably driven by an internal combustion engine, the plunger including means for defining a common passageway connected at one end to the compression chamber, the plunger further including means for defining angularly spaced apart spill ports branching off the common passageway to an outside surface thereof and a fuel delivery port branching off the common passageway, the fuel delivery port being selectively movable into and out of alignment with each one moreВ В» of the nozzles by rotation of the plunger a magnetized rotary ring including means for defining a spill groove extending along the inner wall thereof, the ring being mounted on the plunger and rotatable, with respect to the plunger, between at least a first angular position, the ring consists of a cylindrical structure having differently magnetized equally divided arcuate sections, the groove being formed on the inner wall of the cylindrical structure and substantially axially extending from one end of the structure spring means for biasing the ring toward one of the first and second angular positions a stationary core surrounding the ring and a coil wound on the core for generating a rotative thrust on the ring for selectively moving the ring between the first and second angular positions in response to a control signal. This patent describes a fuel injection pump. The proportioning device preferably is arranged to fit inside the housing of an existing air cleaner. A pair of circumferentially spaced radially extending partitions located on the opposite sides of each port define a radially extending venturi which has a throat located at or in the vicinity of the port and serves to induce flow of the gaseous fuel through the corresponding port. The gaseous fuel is admitted into the mixing chamber from the plenum chamber through one or more ports in the arcuate wall at or in the vicinity of the throat of the annular venturi.

A base member or second wall cooperates with the arcuate wall to form a substantially closed, annular plenum chamber into which a gaseous fuel, such as natural gas, is admitted when the engine is to be operated on the gaseous fuel. The second member also includes an annular portion having an arcuate first wall which is convex to and spaced from the peripheral edge portion of the first member to moreВ В» define an annular venturi having an inlet in communication with the atmosphere and an annular outlet in communication with the mixing chamber. The device for proportioning a gaseous fuel and air for combustion in an internal combustion engine includes a plate-like first member having a peripheral edge portion and a second member cooperating with the first member having a peripheral edge portion and a second member cooperating with the first member to define a mixing chamber having an outlet adapted to be connected in communication with the air intake of the engine carburetor. A two-stroke cycle internal combustion engine is described comprising: a fan-shaped combustion volume having two flat radial end walls, an arcuate top wall and two flat parallel fan-shaped side walls a single pivoted divider oscillating on a fixed pivot pin, the divider having a first end and a second end, with the first end of the divider oscillating within the combustion volume thereby dividing the combustion volume into two combustion chambers the second end of the pivoted divider being bifurcated a connecting rod having a first end and a second end, with the first end being rotatable on a wrist pin located within the bifurcated end of the pivoted divider a power output crankshaft, to the crank of which the second end of the connecting rod is rotatably attached two spark plugs, with one extending through each radial wall of the fan-shaped combustion chamber two fuel injection tubes, with one extending through each radial wall of the fan-shaped combustion chamber an exhaust port extending through the center of the arcuate top wall of the combustion chamber and two air intake ports, with one extending through the center of each of the flat parallel fan-shaped side = ,

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