Individual cylinder tuning booster for a carburetor
OwnerWilliam R. Krupinventor
Life of this patent
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Abstract
A fuel discharge nozzle for discharging fuel into an airflow passageway of a barrel of a carburetor includes a nozzle body that is attached to the carburetor and has proximal and distal ends. The nozzle body defines a fuel inlet that receives fuel, a fuel outlet that permits the fuel to flow out of the nozzle body, and a fuel passage fluidly connecting the fuel inlet and the fuel outlet so that the fuel can flow from the fuel inlet to the fuel outlet. The nozzle body is sized and shaped to position the fuel outlet in the airflow passageway of the barrel of the carburetor when the nozzle body is attached to the carburetor so that the fuel flows into the airflow passageway of the carburetor and mixes with air after the fuel flows out of the fuel outlet.
Claims18
A fuel discharge nozzle for discharging fuel into an airflow passageway of a barrel of a carburetor, the fuel discharge nozzle comprising:
- an elongate nozzle body configured to be attached to the carburetor and having proximal and distal ends, the nozzle body having an airfoil shape and defining a fuel inlet configured to receive fuel, a fuel outlet configured to permit the fuel to flow out of the nozzle, and a fuel passage fluidly connecting the fuel inlet and the fuel outlet so that the fuel can flow from the fuel inlet to the fuel outlet, the nozzle positioning the fuel outlet in the airflow passageway of the barrel of the carburetor so that the fuel flows into the airflow passageway of the carburetor and mixes with air as the fuel flows through the fuel outlet.
A carburetor for an internal combustion engine having at least at least two combustion cylinders, the carburetor comprising:
- a body having at least one barrel formed therein defining an airflow passageway for the passage of air from outside the carburetor into the two cylinders of the internal combustion engine when the carburetor is attached to the internal combustion engine,
- a throttle valve disposed in the barrel for controlling the amount of fuel and air that is passed from the barrel to the cylinders of the internal combustion engine, the throttle valve being constructed so that air and fuel flow on opposite sides of the throttle valve, and
- a nozzle mounted on the carburetor body and extending transversely across the barrel upstream of the throttle valve, the nozzle having an airfoil shape and defining a fuel inlet configured to receive fuel, a fuel outlet at a distal end of the nozzle and configured to permit the fuel to flow out of the nozzle, and a fuel passage fluidly connecting the fuel inlet and the fuel outlet so that the fuel can flow from the fuel inlet to the fuel outlet, the nozzle positioning the fuel outlet in the airflow passageway of the barrel of the carburetor so that the fuel flows into the airflow passageway of the carburetor and mixes with air as the fuel flows through the fuel outlet.
A method of tuning a carburetor to provide fuel/air mixtures to two cylinders of an internal combustion engine fed by a single barrel of the carburetor, the method comprising:
- determining that a fuel/air mixture from the carburetor to at least one of the two cylinders deviates from a standard fuel/air mixture;
- selecting from a set of nozzles, each nozzle of the set of nozzles constructed to deliver fuel to an airflow passageway of the barrel, a nozzle that will deliver fuel to the airflow passageway of the barrel at a location that will bring the fuel/air mixture of at least one of the two cylinders closer to the standard fuel/air mixture, wherein the location each nozzle of the set of nozzles is constructed to deliver fuel to is different;
- and
- installing the selected nozzle into the carburetor.
Dependencies are inferred from the claim text.