Venturi-assisted fuel injection carburetor system
OwnerBarry Grantinventor
Life of this patent
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Abstract
Fuel at a regulated pressure passes from a fuel to tank one or more fuel injectors disposed in fuel injector housings formed in mounting blocks that are mounted to the sides of a carburetor center section. Each injector is in fluid communication with a booster venturi ring that is suspended in each carburetor barrel. The injectors intermittently deliver high pressure pulses of fuel to the booster venturi rings which disperse the fuel into the airstream. The high velocity of the airstream passing through the suspended booster venturi ring decreases the pressure of the airstream, resulting in greater atomization of the injected fuel.
Claims13
A venturi-assisted fuel injection carburetor system for a combustion engine, said system comprising:
- a carburetor center section having a plurality of barrels extending therethrough, each barrel forming a venturi passage having a wall constriction therein for forming a zone of low pressure in said venturi passage in response to movement of air through said venturi passage, said center section further having mounting surfaces formed on sides of said center section;
- a plurality of throttle valves, one throttle valve positioned in each barrel downstream from each wall constriction;
- fuel injector mounting blocks, each fuel injector mounting block having at least one fuel injector housing and a mounting surface, one mounting block being mounted to each of said mounting surfaces of said center section;
- a plurality of fuel injectors, each fuel injector being mounted in a fuel injector housing of one of said fuel injector mounting blocks, and
- a plurality of fuel conduits provided in said mounting blocks and said center section, each fuel conduit extending from one fuel injector, through its mounting block, and through said center section to one of said venturi passages such that each fuel injector is in fluid communication with one of said venturi passages;
- wherein said fuel injectors can be used to intermittently and sequentially inject fuel into said venturi passages via said conduits with said fuel being atomized by the zones of low pressure formed in said venturi passages so that said atomized fuel can be passed into the engine for combustion.
A carburetor conversion system for converting a conventional carburetor center section into a fuel injection carburetor system, the center section having a plurality of barrels that form venturi passages, and mounting surfaces formed on opposite sides of the center section, said fuel injection conversion system comprising:
- fuel injector mounting blocks, each fuel injector mounting block having at least one fuel injector housing and having a mounting surface configured to engaging one of the mounting surfaces of the carburetor center section, each mounting block further having a fuel conduit extending from each injector housing and configured to connect with a fuel conduit formed in the center section that extends from the mounting surface of the center section to one of the carburetor barrels;
- a plurality of fuel injectors each having an injection nozzle, one fuel injector mounted within each fuel injector housing of each mounting block with said nozzle being directed toward one of said fluid conduits of said mounting block such that each fuel injector is adapted for fluid communication with one carburetor barrel;
- sensing means for sensing engine operating conditions to determine the proper timing and duration for actuation of said fuel injectors;
- and
- control means for actuating said fuel injectors in response to the engine operating conditions sensed by said sensing means;
- wherein said fuel injectors are intermittently and sequentially actuated by said control means to inject fuel and air into the carburetor barrels so that the fuel can be atomized by the venturi passages before being passed into the engine for combustion.
A method for converting a carburetion system of a combustion engine into a fuel injection system, said method comprising the steps of:
- providing a conventional carburetor center section having a plurality of carburetor barrels that form venturi passages, mounting surfaces formed on opposite sides of the center section, and fuel conduits that extend from the mounting surfaces to the barrels;
- providing at least one fuel injector mounting block having at least one fuel injector housing, a mounting surface, and a fuel conduit extending from each injector housing to the mounting surface of the block;
- mounting a fuel injector in each fuel injector housing with the fuel injector directed towards the fuel conduit so as to be in fluid communication therewith;
- mounting the fuel injection mounting block to the carburetor center section with the mounting surface of each mounting block in engagement with one of the mounting surfaces of the center section and the fuel conduit of the mounting block in fluid communication with one of the fuel conduits of the carburetor center section;
- connecting the fuel injector to control means for intermittently actuating the fuel injector;
- and
- connecting the control means to sensing means for sensing engine operation conditions to determine the proper timing and duration of actuation of the fuel injector;
- wherein the fuel injector is intermittently actuated by the control means in response to the engine operation conditions sensed by the sensing means to inject fuel and air into the carburetor barrels so that the fuel can be atomized by the venturi passages before being passed into the engine for combustion.
Dependencies are inferred from the claim text.