Carburetor with single diaphragm for supplying and metering fuel
AssigneeZama Japan Kabushiki Kaisha
InventorsDavid R. Shebuski, Toshiyuki Kuyo, Takumi Nonaka, Jay A. Perry
Life of this patent
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Abstract
A carburetor includes a body with an air intake path, a fuel pump and a fuel pressure regulator. The fuel pump and fuel pressure regulator are positioned on the same side of the body. A fuel pump and metering chamber diaphragm is sandwiched between the body of the carburetor and a pump body and cover. The diaphragm separates a pump chamber from a pulse chamber of the fuel pump and separates a fuel chamber from an air chamber in the fuel pressure regulator. Inlet and outlet flapper valves are part of the diaphragm or a separate flapper valve member positioned between the body and the diaphragm.
Claims17
A carburetor comprising
- a body with an air intake path extending there through,
- a pump cover coupled to a side of the body, and
- a pump and metering diaphragm interposed between the body of the carburetor and the pump cover, wherein the pump and metering diaphragm divides a fuel pump into a pulse chamber formed in the body of the carburetor and a pump chamber formed in the pump cover, and divides a fuel pressure regulator into a constant pressure fuel chamber formed in the body of the carburetor and an air chamber formed in the pump cover, wherein the pulse chamber and constant pressure fuel chamber are formed in the body of the carburetor on the same side of the carburetor, and
- a main fuel jet in fluid communication with the constant pressure fuel chamber and releasably mounted within the body.
A carburetor comprising
- a body,
- an air intake path in the body,
- a fuel pump,
- a metering chamber in fluid communication with the fuel pump and the air intake path, wherein the fuel pump and the metering chamber are positioned on the same side of the body, and
- a main fuel jet in fluid communication with the metering chamber and releasably mounted within the body.
Dependencies are inferred from the claim text.