US 6,810,863 B2 · Gaseous fuel and air mixer assembly for internal combustion engine

Abstract

A gas/air mixer assembly provides a Venturi metering system that may draw fuel from a zero governor, mix it with air to form a homogenous gas/air mixture for delivery to an internal combustion engine. The gas/air mixer assembly may also accept fuel under pressure from a gas metering valve or fuel injector for delivery to an internal combustion engine. The mixer includes an air horn, the relative position of which in relation to a shaped restriction body governs the air flow into the engine intake manifold. The flange of the air horn is configured to redirect the flow of air without generating significant turbulence, and providing a maximum velocity perpendicular flow to the injection of fuel to be mixed therein. The relative position of the air horn to the shaped restriction body is determined based on the cubic capacity and speed of the engine with which it is used.

Claims20

Dependent claims

A fuel and air mixer assembly, comprising:

a mixer body forming an internal air chamber therein, the mixer body further defining an air intake and an air/fuel discharge conduit in communication with the internal air chamber;
an air horn positioned in the air/fuel discharge conduit, the air horn having a flared end extending into the internal air chamber, the flared end of the air horn having an upper flat surface;
a cover positioned on the mixer body, the cover having a shaped restriction body extending therefrom into the flared end of the air horn, the cover further defining a fuel discharge manifold therein;
and
a fuel spray plate positioned at an outlet of the fuel discharge manifold and defining a fuel discharge port thereat, the fuel discharge port being positioned in orthogonal alignment with the upper flat surface of the air horn, the fuel spray plate and the upper flat surface forming an air flow through region therebetween.

2 more elements

Dependencies are inferred from the claim text.

Gaseous fuel and air mixer assembly for internal combustion engine

Life of this patent

Gaseous fuel and air mixer assembly for internal combustion engine

Life of this patent

Abstract

Claims20