US 5,392,752 A · Fuel-air mixing device for an internal combustion engine

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. As a result, the small portion of flow causes the liquid fuel within cavity to pass through the opening of the cavity, into the inner body of the mixing device, and into the main flow of the fuel-air mixture passing through inner body portion. Thereby, the liquid fuel droplets accumulated in the cavity are vaporized within the flow of fuel-air mixture entering the inlet of the engine.

Claims16

Dependent claims

A fuel-air mixing device for receiving a flow of a fuel-air mixture and for delivering the flow of the fuel-air mixture to the inlet of an internal combustion engine, the fuel-air mixture containing droplets of unvaporized fuel, the device comprising:

a hollow outer elongated body portion having oppositely disposed open end portions;
and
a hollow inner elongated body portion having oppositely disposed additional open end portions, the inner body portion having a lateral cross-section enabling the inner body portion to be nested within the outer body portion with the exterior surface of the inner body portion forming a cavity with respect to the interior surface of the outer body portion, one end portion of the inner body portion being adapted to receive the fuel-air mixture containing droplets of unvaporized fuel, the other end portion of the inner body portion enabling the fuel-air mixture to be delivered to the inlet of the engine, the other end portion of the inner body portion extending to the outer body portion to close the portion of the cavity adjacent thereto, the portion of the cavity adjacent the one end portion of the inner body portion being open to receive droplets of unvaporized fuel into the cavity, the open portion of the cavity enabling droplets of unvaporized fuel to be accumulated in the cavity from the flow of fuel-air mixture and then to pass from the open portion of the cavity as vaporized fuel and into the fuel-air mixture passing through the inner body portion.

Dependencies are inferred from the claim text.

Fuel-air mixing device for an internal combustion engine

Life of this patent

Fuel-air mixing device for an internal combustion engine

Life of this patent

Abstract

Claims16