Abstract: An air/fuel flow structure for enhancing the fuel efficiency of an internal combustion engine includes a generally conical-shaped flow path useable in the engine. One or more tab and one or more notch are formed in the conical path to alter one or more characteristics, such as pressure and velocity, of the gas flow. The apparatus may be positioned in the air intake system. Alternatively, the apparatus may be positioned in the exhaust system.

Abstract: An air/fuel flow structure for enhancing the fuel efficiency of an internal combustion engine includes a generally conical-shaped flow path useable in the engine. One or more tab and one or more notch are formed in the conical path to alter one or more characteristics, such as pressure and velocity, of the gas flow. The apparatus may be positioned in the air intake system. Alternatively, the apparatus may be positioned in the exhaust system.

Abstract: An apparatus for enhancing the fuel efficiency of an internal combustion engine includes a generally conical-shaped member positioned in a gas flow generated by the engine. One or more deformations, such as tabs and notches, are formed in the conical member to alter one or more characteristics, such as pressure and velocity, of the gas flow. The apparatus may be positioned in the air intake system. Alternatively, the apparatus may be positioned in the exhaust system.

Abstract: An air/fuel flow structure for enhancing the fuel efficiency of an internal combustion engine includes a generally conical-shaped flow path useable in the engine. One or more tab and one or more notch are formed in the conical path to alter one or more characteristics, such as pressure and velocity, of the gas flow. The apparatus may be positioned in the air intake system. Alternatively, the apparatus may be positioned in the exhaust system.

Abstract: The disclosure is directed to a fuel-air mixing device for an internal combustion engine. The fuel-air mixing includes an inner elongated hollow body portion for delivering a fuel-air mixture from a carburetor or a fuel-injection device into the inlet of the intake manifold of the engine. The device includes an outer elongated body portion within which the inner body portion is disposed. The cavity is formed between the interior surface of the outer body portion and the exterior surface of the inner body portion. The cavity is open at one end portion facing the flow of the fuel-air mixture. The opposite end of the cavity is closed. The fuel-air mixture contains droplets of fuel which pass adjacent the inner surface of the carburetor or the fuel injection device. Such droplets enter the opening of the cavity of the mixing device and accumulate therein. Additional in the mixing device enable a small portion of the flow of the fuel-air mixture to move inwardly therethrough and into the cavity.