US 5,394,838 A · Vaporized fuel injection system

Abstract

A vaporized fuel injection system for an internal combustion engine includes a housing adapted to be mounted on the engine and having a vaporizer heat shell therein connected to the engine for receiving hot exhaust gases. Air is compressed by means of compressor blades mounted at the tips of the conventional fan blades for the engine. The compressor blades travel in a shroud whereby the air is compressed and supplied to the housing where it passes over the vaporizer heat shell. A fuel vaporization chamber is formed directly on the heat shell and liquid fuel is injected directly onto the heated shell for vaporizing the fuel. When the engine is cold, the liquid fuel may be injected directly onto glow plugs disposed in communication with the chamber. The heated compressed air is delivered to an outlet passage having a throttle valve therein and the vaporized fuel is delivered through the outlet passage downstream of the throttle valve to provide an air/fuel vapor mixture which is delivered to each combustion chamber of the engine. A liquid coolant is injected directly into each combustion chamber to control the combustion temperature.

Claims13

Dependent claims

A vaporized fuel injection system for an internal combustion engine having at least one combustion chamber, said injector system comprising housing means;

first passage means extending through said housing means and having inlet and outlet means for connection to an exhaust manifold system of an internal combustion engine for circulation of exhaust gases through said first passage means;
second passage means extending through said housing means in contact with said first passage means, said second passage means having inlet means and outlet means;
air compressor means connected to said inlet means for said second passage means for supplying pressurized air through said second passage means for heating said pressurized air;
throttle means mounted in said outlet means of said second passage means for controlling pressurized air flow through said outlet means of said second passage means;
partition means defining a fuel vaporization chamber having a plate in common with said first passage means;
fuel injection means for injecting liquid fuel directly onto said plate which is heated by passage of exhaust gases through said first passage means to generate vaporized fuel;
and
distribution means connected to said chamber and said outlet means of said second passage means for distributing vaporized fuel and heated pressurized air to said at least one combustion chamber.

5 more elements

An internal combustion engine having at least one combustion chamber with ignition means;

a vaporized fuel injection system for supplying a mixture consisting essentially of air and vaporized fuel to said combustion chamber;
valve means controlling the flow of said air and vaporized fuel into said combustion chamber;
and
liquid coolant injector means mounted adjacent said valve means for injecting liquid coolant into said combustion chamber with said air and vaporized fuel for controlling temperature within said combustion chamber upon combustion of said air and vaporized fuel.

1 more element

Dependencies are inferred from the claim text.

Vaporized fuel injection system

Life of this patent

Vaporized fuel injection system

Life of this patent

Abstract

Claims13