Emission reduction system

Claim 2

An emission reduction system for internal combustion engines for use in combination with a carburetor having a conventional air intake, gas tank, fuel exhaust line, fuel pump, ignition system and fuel line communicating said gas tank with said carburetor, said system comprising a closed pressure vessel, a first conduit extending into said pressure vessel, valve means operable to communicate said first conduit with said fuel line whereby the fuel is pumped by said fuel pump into said pressure vessel, a second conduit positioned adjacent said pressure vessel, communicating with said exhaust line, and adapted to carry engine exhaust there-through, whereby said exhaust vaporizes the fuel within said pressure vessel, means for regulating the exhaust flow through said second conduit whereby the heat within said conduit is controlled, a mixing chamber carried by said carburetor and adapted for the mixing of air and gasoline vapor therein, sensing means positioned within said pressure vessel, means for actuating said valve means to communicate said first conduit with said fuel line, said actuating means being connected to said sensing means whereby said sensing means activates said actuating means upon said sensing means reading a predetermined condition within said pressure vessel, a pressure regulator positioned on said first conduit, said regulator being adapted to control the pressure of the gasoline vapor entering the mixing chamber and second valve means positioned in said first conduit and adapted to prevent the passage of gasoline vapor therethrough upon turning off the engine.

Claim 3

The combination of claim 1 wherein said condition is the vapor pressure within said pressure vessel.

Claim 4

The combination of claim 1 wherein said condition is the temperature within said pressure vessel.

Claim 5

The combination of claim 1 wherein said exhaust regulating means comprises a diverter valve, means for actuating said diverter valve and a second sensing means positioned within said pressure vessel, said sensing means being connected to said actuating means whereby said sensing means activates said actuating means upon said sensing means reading a predetermined condition within said pressure vessel thereby controlling the diverter valve and the exhaust flow through said second conduit.

Claim 6

The combination of claim 1 wherein said second valve means is a solenoid valve, said solenoid being in electrical contact with the ignition system whereby said valve means is maintained in the open position when the ignition is on and in the closed position when the ignition system is turned off, thereby preventing the escape of gasoline vapor through said first conduit when the ignition is turned off.

Claim 7

The combination of claim 1 wherein said mixing chamber has an annular wall therein forming a venturi, said wall having a plurality of apertures therein, said apertures being adapted for the passage of gasoline vapor therethrough whereby said gasoline vapor mixes with the air being sucked down through the throat of the venturi.

Claim 8

An emission reduction system foR internal combustion engines for use in combination with a carburetor having a conventional air intake, gas tank, fuel exhaust line, fuel pump, ignition system and fuel line communicating said gas tank with said carburetor, said system comprising a closed pressure vessel, a first conduit extending into said pressure vessel, valve means operable to communicate said first conduit with said fuel line whereby the fuel is pumped by said fuel pump into said pressure vessel, a second conduit positioned adjacent said pressure vessel, communicating with said exhaust line, and adapted to carry engine exhaust therethrough, whereby said exhaust vaporizes the fuel within said pressure vessel, means for regulating the exhaust flow through said second conduit whereby the heat within said conduit is controlled, a mixing chamber carried by said carburetor and adapted for the mixing of air and gasoline vapor therein, said chamber having an annular wall therein forming a venturi, said wall having a plurality of apertures therein, said apertures being adapted for the passage of gasoline vapor therethrough, sensing means positioned within said pressure vessel, means for actuating said valve means to communicate said first conduit with said fuel line, said actuating means being connected to said sensing means whereby said sensing means activates said actuating means upon said sensing means reading a predetermined condition within said pressure vessel, a pressure regulator positioned on said first conduit, said regulator being adapted to control the pressure of the gasoline vapor entering the mixing chamber, a solenoid valve means positioned in said first conduit, said solenoid being in electrical contact with the ignition system whereby said valve means is maintained in the open position when the ignition is on and in the closed position when the ignition is turned off, thereby preventing the escape of gasoline vapor through said first conduit when the ignition is turned off and a second solenoid valve positioned in said first conduit said solenoid being in electrical contact with a starter motor and in communication with the engine manifold so that said valve is opened upon activation of the starter motor, held in an open state by the vacuum pressure in the manifold and closed upon stalling of the engine due to loss of said vacuum thereby preventing the passage of gasoline vapor through said second solenoid valve upon the stalling of the engine.

Claim 9

An emission reduction system foR internal combustion engines for use in combination with a carburetor having a conventional air intake, gas tank, fuel exhaust line, fuel pump, ignition system and fuel line communicating said gas tank with said carburetor, said system comprising a closed pressure vessel, a first conduit extending into said pressure vessel, valve means operable to communicate said first conduit with said fuel line whereby the fuel is pumped by said fuel pump into said pressure vessel, a second conduit positioned adjacent said pressure vessel, communicating with said exhaust line, and adapted to carry engine exhaust therethrough, whereby said exhaust vaporizes the fuel within said pressure vessel, means for regulating the exhaust flow through said second conduit whereby the heat within said conduit is controlled, a mixing chamber carried by said carburetor and adapted for the mixing of air and gasoline vapor therein, said chamber having an annular wall therein forming a venturi, said wall having a plurality of apertures therein, said apertures being adapted for the passage of gasoline vapor therethrough, sensing means positioned within said pressure vessel, means for actuating said valve means to communicate said first conduit with said fuel line, said actuating means being connected to said sensing means whereby said sensing means activates said actuating means upon said sensing means reading a predetermined condition within said pressure vessel, a pressure regulator positioned on said first conduit, said regulator being adapted to control the pressure of the gasoline vapor entering the mixing chamber, a solenoid valve means positioned in said first conduit, said solenoid being in electrical contact with the ignition system whereby said valve means is maintained in the open position when the ignition is on and in the closed position when the ignition is turned off, thereby preventing the escape of gasoline vapor through said first conduit when the ignition is turned off and a second solenoid valve positioned in said first conduit said solenoid being in electrical contact with a starter motor and in communication with the engine manifold so that said valve is opened upon activation of the starter motor, held in an open state by the vacuum pressure in the manifold and closed upon stalling of the engine due to loss of said vacuum thereby preventing the passage of gasoline vapor through said second solenoid valve upon the stalling of the engine.

Claim 10

The combination of claim 7 wherein said exhaust regulating means comprises a diverter valve, means for actuating said diverter valve and a second sensing means positioned within said pressure vessel, said sensing means being connected to said actuating means whereby said sensing means activates said actuating means upon said sensing means reading a predetermined condition within said pressure vessel, thereby controlling the diverter valve and the exhaust flow through said conduit.

Claim 11

The combination of claim 7 including a tubing member communicating said second solenoid valve with the intake manifold of the engine and said second solenoid valve being in electrical contact with the starter motor whereby said second solenoid valve is open upon the activating of the starter motor, held in the open position by the low pressure in the intake manifold and returned to the closed position by the stalling of the engine and the increase of pressure in the intake manifold, thereby preventing the escape of gasoline vapor through said first conduit upon the stalling of the engine.

Claim 12

The combination of claim 7 including a heat exchange member carried by said closed pressure vessel and extending into said second conduit.

Claim 13

The combination of claim 10 including means for regulating the fuel level within said pressure vessel.