Sonic carburetor

A carburetor responsive to actuation of an operator controlled throttle for mixing a fuel from a storage tank with air for burning in an internal combustion engine comprising:

• a carburetor housing having an air-fuel mixing passageway through which air is drawn into the engine in response to an engine caused partial vacuum;
• a dispersion bar mounted to the housing in the air fuel mixing passageway and extending transverse to the direction of air flow therethrough, the dispersion bar having a plurality of fuel dispersion openings for dispersing fuel into the air-fuel mixing passageway in a direction transverse to the air flow therethrough;
• a spool valve means in the dispersion bar for regulating the flow of fuel passing through the fuel dispersion openings, the spool valve means being actuated in response to the volume of the fuel metered into the dispersion bar so that the pressure of the fuel is maintained substantially constant;
• venturi means for being variably opened and closed in fluctuable response to actuation of the throttle and the partial vacuum of the engine;
• throttle valve means pivotally mounted in the air-fuel mixing passageway transversely adjacent the fuel dispersion openings in the dispersion bar for defining a throat in the air-fuel mixing passagway between the fuel dispersion openings and the throttle valve means wherein the velocity of the air passing through the air-fuel mixing passageway is substantially at a maximum in the throat of the throttle valve means adjacent the fuel dispersion openings, the throttle valve means variably opening and closing to vary the throat opening in response to actuation of the operator controlled throttle;
• a fuel reservoir having an input port and an exit port;
• a fuel flow metering means for metering the flow of fuel from the fuel reservoir into the dispersion bar in response to the amount by which the venturi means is opened and closed.

A carburetor responsive to activation of an operator controlled throttle for mixing a fuel from a storage tank with air for burning in an internal combustion engine comprising:

• a carburetor housing having an air intake opening, an air-fuel discharge opening and an air-fuel mixing passageway extending through the housing between the air intake opening and the air-fuel discharge opening for drawing air in through the air intake opening in response to a partial vacuum created by the operation of the internal combustion engine and discharging a metered amount of the fuel in the air-fuel mixing passageway, the air-fuel mixture resulting therefrom being drawn through the air-fuel discharge opening into the engine in response to the partial vacuum, the direction of air flow through the housing defining a flow direction;
• a fuel reservoir housing defining therein a fuel reservoir having a fuel input port and a fuel discharge port;
• a fuel dispersion assembly mounted to the housing for dispersing the fuel from the reservoir into the air passing through the air-fuel mixing passageway;
• a fuel flow metering means for variably regulating the flow of fuel from the fuel reservoir into the fuel dispersion assembly in response to the magnitude of the partial vacuum created by the operation of the internal combustion engine comprising:
• a pivotal metering cam having a variable radius metering surface;
• a metering rod extending through the fuel reservoir housing and having a first end positioned to bear against the metering surface and a second end position in the fuel reservoir;
• a ball valve;
• a first spring positioned in the fuel discharge port to press against the ball valve whereby the ball valve is held against a second end of the reservoir metering rod, the first spring further pressing the reservoir metering rod to bear against metering surface, the fuel discharge port having therein a tapered cylindrical closure surface whereby pivotal movement of the metering disk causes longitudinal movement of the metering rod to variably increase and decrease the spacing between the ball valve and the tapered cylindrical closure surface whereby the flow of fuel through the fuel discharge port is increased or decreased respectively;
• an air valve means positioned to pivot in the air intake opening and coupled to pivot in response to the operator controlled throttle;
• and
• an on/off flow control valve coupled between the fuel storage tank and the fuel reservoir for enabling fuel to flow from the fuel storage tank into the reservoir, said on/off flow control valve coupled for being responsive to pivoting of the air valve means.

A carburetor responsive to activation of an operator controlled throttle for mixing a fuel from a storage tank with air for burning in an internal combustion engine comprising:

• a carburetor housing having an air intake opening, an air-fuel discharge opening and an air-fuel mixing passageway extending through the housing between the air intake opening and the air-fuel discharge opening for drawing air in through the air intake opening in response to a partial vacuum created by the operation of the internal combustion engine and discharging a metered amount of the fuel in the air-fuel mixing passageway, the air-fuel mixture resulting therefrom being drawn through the air-fuel discharge opening into the engine in response to the partial vacuum, the direction of air flow through the housing defining a flow direction;
• a fuel reservoir housing defining therein a fuel reservoir having a fuel input port and a fuel discharge port;
• a fuel dispersion assembly mounted to the housing for dispersing the fuel from the reservoir into the air passing through the air-fuel mixing passageway;
• a fuel flow metering means for variably regulating the flow of fuel from the fuel reservoir into the fuel dispersion assembly in response to the magnitude of the partial vacuum created by the operation of the internal combustion engine comprising:
• a pivotal metering cam having a variable radius metering surface;
• a metering rod extending through the fuel reservoir housing and having a first end positioned to bear against the metering surface and a second end positioned in the fuel reservoir;
• a ball valve;
• a first spring positioned in the fuel discharge port to press against the ball valve whereby the ball valve is held against a second end of the reservoir metering rod, the first spring further pressing the reservoir metering rod to bear against metering surface, the fuel discharge port having therein a tapered cylindrical closure surface whereby pivotal movement of the metering disk causes longitudinal movement of the metering rod to variably increase and decrease the spacing between the ball valve and the tapered cylindrical closure surface whereby the flow of fuel through the fuel discharage port is increased or decreased respectively;
• an on/off flow control valve coupled between the fuel storage tank and the fuel reservoir for enabling fuel to flow from the fuel storage tank into the reservoir;
• a pivotal cam shaft coupled to pivot in response to variations in the partial vacuum, the cam shaft having a half moon shape with a flat cam surface on one of its sides and a cylindrical cam surface on its other side;
• and
• the on/off valve comprising:
• a valve housing having a fuel passageway therethrough with a constriction therein;
• an O-ring positioned in the fuel passageway for being seatable against the constriction for preventing fuel flow through the fuel passageway;
• and
• an actuation rod having a first end coupled to the O-ring valve and a second end bearing against the edge of the flat cam surface adjacent the cylindrical cam surface when the throttle is not activated whereby the O-ring valve is seated in the fuel passageway constriction and bearing against the cylindrical cam surface when the cam shaft pivots in response to the partial vacuum created by the engine whereby the O-ring valve is pressed from its seated position into an opened position allowing fuel flow through the on/off valve;
• and
• an on/off valve spring for pressing the second end of the actuation rod against the cam shaft and for keeping the O-ring valve seated in the fuel passageway constriction when the second end of the actuation rod bears against the flat cam surface.

A carburetor responsive to activation of an operator controlled throttle for mixing a fuel from a storage tank with air for burning in an internal combustion engine comprising:

• a carburetor housing having an air intake opening, an air-fuel discharge opening and an air-fuel mixing passageway extending through the housing between the air intake opening and the air-fuel discharge opening for drawing air in through the air intake opening in response to a partial vacuum created by the operation of the internal combustion engine and discharging a metered amount of the fuel in the air-fuel mixing passageway, the air-fuel mixture resulting therefrom being drawn through the air-fuel discharge opening into the engine in response to the partial vacuum, the direction of air flow through the housing defining a flow direction;
• a fuel reservoir housing defining therein a fuel reservoir having a fuel input port and a fuel discharge port;
• a fuel dispersion assembly mounted to the housing for dispersing the fuel from the reservoir into the air passing through the air-fuel mixing passageway;
• a fuel flow metering means for variably regulating the flow of fuel from the fuel reservoir into the fuel dispersion assembly in response to the magnitude of the partial vacuum created by the operation of the internal combustion engine comprising:
• a pivotal metering cam having a variable radius metering surface;
• a metering rod extending through the fuel reservoir housing and having a first end positioned to bear against the metering surface and a second end positioned in the fuel reservoir;
• a ball valve;
• a first spring positioned in the fuel discharge port to press against the ball valve whereby the ball valve is held against a second end of the reservoir metering rod, the first spring further pressing the reservoir metering rod to bear against metering surface, the fuel discharge port having therein a tapered cylindrical closure surface whereby pivotal movement of the metering disk causes longitudinal movement of the metering rod to variably increase and decrease the spacing between the ball valve and the tapered cylindrical closure surface whereby the flow of fuel through the fuel discharge port is increased or decreased respectively;
• the fuel flow metering means further comprising metering valve closure adjustment means comprising:
• a valve adjustment sleeve having a central metering passageway therethrough, the surface of the central metering passageway defining the tapered cylindrical closure surface, the valve adjustment sleeve having a bottom end and a top end, the valve adjustment sleeve being movably positioned in the fuel discharge port;
• a second spring positioned in the fuel discharge port for pressing against the bottom end of the valve adjustment sleeve;
• a valve adjustment arm having a first end pivotally attached in the fuel reservoir, a central region positioned for pressing against the top end of the valve adjustment sleeve, and a second end;
• and
• a valve adjustment shaft extending into the fuel reservoir for contacting the second end of the valve adjustment arm, the valve adjustment shaft being adjustable into the fuel reservoir to variably press against the second end of the valve adjustment arm whereby the valve adjustment arm pivots about its first end and the central region variably presses against the top end of the valve adjustment sleeve to adjustably move the valve adjustment sleeve in the fuel discharge port to vary the space between the ball valve and the tapered cylindrical closure surface.

A carburetor responsive to activation of an operator controlled throttle for mixing a fuel from a storage tank with air for burning in an internal combustion engine comprising:

• a carburetor housing having an air intake opening, an air-fuel discharge opening and an air-fuel mixing passageway extending through the housing between the air intake opening and the air discharge opening for drawing air in through the air intake opening in response to a partial vacuum created by the operation of the internal combustion engine and discharging a metered amount of the fuel in the air-fuel mixing passageway, the air-fuel mixture resulting therefrom being drawn through the air-fuel discharge opening into the engine in response to the partial vacuum, the direction of air flow through the housing defining a flow direction;
• a fuel reservoir housing defining therein a fuel reservoir having a fuel input port and a fuel discharge port;
• a fuel dispersion assembly mounted to the housing for dispersing the fuel from the reservoir into the air passing through the air-fuel mixing passageway;
• a fuel flow metering means for variably regulating the flow of fuel from the fuel reservoir into the fuel dispersion assembly in response to the magnitude of the partial vacuum created by the operation of the internal combustion engine comprising:
• a pivotal metering cam having a variable radius metering surface;
• a metering rod extending through the fuel reservoir housing and having a first end positioned to bear against the metering surface and a second end positioned in the fuel reservoir;
• a ball valve;
• a first spring positioned in the fuel discharge port to press against the ball valve whereby the ball valve is held against a second end of the reservoir metering rod, the first spring further pressing the reservoir metering rod to bear against metering surface, the fuel discharge port having therein a tapered cylindrical closure surface whereby pivotal movement of the metering disk causes longitudinal movement of the metering rod to variably increase and decrease the spacing between the ball valve and the tapered cylindrical closure surface whereby the flow of fuel through the fuel discharge port is increased or decreased respectively;
• the fuel flow metering means further comprises metering valve closure adjustment means for adjustably moving the tapered cylindrical closure surface relative to the ball valve for variably increasing and decreasing the spacing between the ball valve and the tapered cylindrical closure surface in response to initiation of engine operation.

A carburetor mounted to an internal combustion engine, the carburetor being responsive to actuation of an operator controlled throttle for mixing a fuel from a storage tank with air drawn through the carburetor by the internal combustion engine comprising:

• a carburetor housing having an air-fuel mixing passageway therethrough, the engine connected to draw air in through the air-fuel mixing passageway;
• a fuel dispersion bar mounted in the air-fuel mixing passageway transverse to the direction of air flow
• therethrough, the dispersion bar having a fuel transfer passageway therethrough coupled to receive fuel from the storage tank and a plurality of fuel dispersion openings extending from the fuel transfer passageway through the dispersion bar in a direction for discharging fuel into the flow of air in a direction transverse thereto;
• throttle valve means pivotally mounted in the air-fuel mixing passageway transversely adjacent to the fuel dispersion openings for variably narrowing a widening the air-fuel mixing passageway adjacent the fuel dispersion openings in response to actuation of the throttle whereby the velocity of the air passing through the air-fuel mixing passageway is substantially at a maximum adjacent the fuel dispersion openings for substantially all throttle positions;
• and
• means in the dispersion bar for regulating the flow of fuel passing through the fuel dispersion openings and maintaining the discharge pressure of the fuel substantially constant.

A carburetor responsive to activation of an operator controlled throttle for mixing a fuel from a storage tank with air for burning in an internal combustion engine comprising:

• a carburetor housing having an air intake opening, an air-fuel discharge opening and an air-fuel mixing passageway extending through the housing between the air intake opening and the air-fuel discharge opening for drawing air in through the air intake opening in response to a partial vacuum created by the operation of the internal combustion engine and discharging a metered amount of the fuel in the air-fuel mixing passageway, the air-fuel mixture resulting therefrom being drawn through the air-fuel discharge opening into the engine in response to the partial vacuum, the direction of air flow through the housing defining a flow direction;
• a fuel reservoir housing defining therein a fuel reservoir having a fuel input port and a fuel discharge port;
• a fuel dispersion means coupled for receiving fuel from the fuel discharge port and metering the fuel for discharge into the air-fuel mixing passageway;
• an on/off flow control valve coupled between the fuel storage tank and the fuel reservoir for enabling fuel to flow from the fuel storage tank into the reservoir;
• a pivotal cam shaft coupled to pivot in response to variations in the partial vacuum, the cam shaft having a half moon shape with a flat cam surface on one of its sides and a cylindrical cam surface on its other side;
• and
• the on/off valve comprising:
• a valve housing having a fuel passageway therethrough with a constriction therein;
• an O-ring valve positioned in the fuel passageway for being seatable against the constriction for preventing fuel flow through the fuel passageway;
• and
• an actuation rod having a first end coupled to the O-ring valve and a second end bearing against the edge of the flat cam surface adjacent the cylindrical cam surface when the throttle is not activated whereby the O-ring valve is seated in the fuel passageway constriction and bearing against the cylindrical cam surface when the cam shaft pivots.