US2114548A - Carburetor attachment - Google Patents

Carburetor attachment Download PDF

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US2114548A
US2114548A US8035A US803535A US2114548A US 2114548 A US2114548 A US 2114548A US 8035 A US8035 A US 8035A US 803535 A US803535 A US 803535A US 2114548 A US2114548 A US 2114548A
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throttle
fuel
venturi tube
valve
combustible mixture
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US8035A
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Roger W Stadlman
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M19/00—Details, component parts, or accessories of carburettors, not provided for in, or of interest apart from, the apparatus of groups F02M1/00 - F02M17/00
    • F02M19/03—Fuel atomising nozzles; Arrangement of emulsifying air conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/17—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the intake system
    • F02M26/19—Means for improving the mixing of air and recirculated exhaust gases, e.g. venturis or multiple openings to the intake system
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
    • F02D9/02—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits concerning induction conduits
    • F02D2009/0201—Arrangements; Control features; Details thereof
    • F02D2009/0276—Throttle and EGR-valve operated together
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/17—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the intake system
    • F02M26/21—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the intake system with EGR valves located at or near the connection to the intake system
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/36—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with means for adding fluids other than exhaust gas to the recirculation passage; with reformers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/65—Constructional details of EGR valves
    • F02M26/71—Multi-way valves

Definitions

  • This invention relates to carburetion and more -particularly to forming a combustible mixture for an internal combustion engine; and has for its object to properly proportion and mix the air and fuel under varying conditions of load and speed.
  • Fig. l is a side elevation of the invention, with the throttle in idling position.
  • Fig. 2 is a transverse section on the'line ti oi l, with the throttle in full open position.
  • Fig. 3 is an axial section on the line ii-t of The invention is applicable to a usual carburetor for an internal combustion engine, the car huretor including fuel nozzle i supplied from a heat chamber 2 and having an air intake from whence the air flows through a Venturi tube i which surrounds the fuel nozzle.
  • the fuel nozzle preferably opens into the i'entm'i tube in the direction of flow through the Venturi tube, and the discharge orifice of the fuel nozzle is preferably at or adjacent the marinlum cross-sectional restriction of the Venturi tube.
  • a combustible mixture is thus formed in usual manner and is drawn through the intake manifold b and past the throttle valve t'into the engine cylinders, the exhaust manifold for the engine cylinders being shown at l.
  • the present invention preferably provides additional flow into the. intake manifold it as the throttle it is opened; and this additional flow is under considerable pressure and creates turbulence in the intake-manifold as well as reducin the vacuum therein, and is preferably also adapted to raise the temperature or the combustible mixture and to supply exhaust gases thereto.
  • a housing it may be mounted in the intake manifold b, preferably between its usual coupling flanges iii-i2, the housing being held in place by the usual flange bolts it.
  • housing has a bore M in alinement with and slightly larger than the bore of the intake manifold, and a sleeve I5 is mounted in this bore and isheld in place between the flanges ll-I2 as shown at Fig. 3.
  • the sleeve l5 has a series of circumferentially spaced ports I6 opening into the bore of the intake manifold, and the housing it! forms an annular chamber l'l surrounding and communicating with the ports, with a passageway [8 leading to the annular chamber.
  • the passageway l8 communicates with a valve chamber it which is formed in housing it, the valve chamber being shown as cylindrical and adapted to receive a rotary valve 2%, and the valve chamber has an intake nipple 2i circumferentially spaced from the passageway it.
  • the valve ill when turned to the position shown at Fig. i closes the intake nipple 2i, but iscut away at one side as shown at 22 so that when turned in the direction of arrow A to the position shown at Figs. 2 and 3, it opens the nile ii to the passageway in.
  • the valve it may be rotated by a lever 23 which is linked at it to the lever 25 for the throttle valve t, so that when throttle rod ill is shifted in the direction to open the throttle t, the valve it is also opened as shown at Fig. 3,- and when the throttle is closed to idling position the valve 2b is also closed as shown at Fig. l.
  • Exhaust gases from theengine are preferably supplied to the intake nipple 2 i, and for this purpose a conduit til communicates with the exhaust manifold l and leads to the intake nipple.
  • the invention provides means for increasing the jet action at fuel nozzle i, preferably as the throttle lt is opened, and for this purpose additional flow under pressure is supplied to the mouth of the Venturi tube 45 for entraining and then atomizing and vaporizing fuel, and this additional flow is preferably adapted to raise the temperature of the fuel which is drawn into the Venturi tube and to supply exhaustgases theretov
  • a conduit '35 has a discharge end tt surrounding the fuel nozzle i in the mouth of Venturi tube t, with the discharge end ⁇ it preferably at or adjacent the discharge-orifice of, the fuel nozzle as shown at Fig. 1, whereby the discharge end tilt is preferably at or adjacent the maximum cross-sectional restriction of the Venturi tube.
  • the conduit 35 is preferably supplied with exhaust gases from the manifold i, the supply being preferably cor'itrolled in accordance with the position of the throttle 8.
  • the valve chamber it may have an outlet nipple 3i communicating with the conduit 35, and the cut away portion of valve 20 may be so arranged that when the valve is turned for opening the intake nipple 2! to the passageway l8, it also opens the intake nipple to the outlet nipple 31 as shown at Fig. 3. 4
  • valve 20 In operation, when the throttle 6 is closed to idling position the valve 20 is also c1osed,.so that the carburetor supplies a combustible mixture in usual manner, with suction past the nearly completely closed throttle drawing in air through intake 3 so that the air entrains and then atomizes and vaporizes fuel at the pointvof maximum cross-sectional restriction of the Venturi tube 4, but as the throttle 6 is opened the valve 20 is correspondingly opened, whereby exhaust gases are supplied via conduit 35 for discharge into the stream of air being drawn in through the air intake 3, with" said discharge adjacent the orifice of the fuel nozzle and adjacent the point of maximum cross-sectional restriction of the Venturi tube 4.
  • the exhaust gases thus function with maximum efflciency to increase the jet action of the stream of air for drawing fuel into the Venturi tube, thereby maintaining the proper fuel ratio for different speeds and loads and heating the fuel for complete vaporization, and'by forming a part of the combustible mixture insuring fuel economy and tending to maintain the same proportion of exhaust gases in the fuel charge at different positions of the throttle.
  • the invention thus provides an efllcient combustible mixture with the air and fuel properly proportioned for varying conditions of speed and load, and with the exhaust gases which are supplied to the Venturi tube at its maximum crosssectional restriction and at the discharge orifice of the fuel nozzle, thereby functioning with maximum efiiciency to increase the jet action and supply heat for vaporizing the fuel, thus supercharging the combustible mixture and increasing the volumetric efilciency of the engine, making it, possible to burn low grade fuel oils in a low compression, high speed engine,
  • a Venturi tube having an air inlet at one end and at its opposite end forming a passageway supplying combustible mixture to the engine
  • a Venturi tube having an air inlet at one end and at its opposite end forming a passageway supplying combustible mixture to the engine
  • a fuel jet having a discharge orifice opening into the Venturl tube in the direction of flow therethrough and at a point just before'maximumu'estriction of the Venturi tube, a conduit for fluid which will mix with and form a component of the combustible mixture, said conduit having a discharge end surrounding the fuel jet and opening into the Venturi tube adjacent the discharge orifice of the jet.
  • a valve controlling flow of fluid through the conduit, a throttle controlling flow of combustible mixture to the engine, and means for opening and closing the valve in accordance with the position of the throttle.
  • a Venturi tube having an air inlet at one end and at its opposite end forming a passage-;- way supplying combustible mixture to the engine, a fuel jet having a discharge orifice opening into the Venturi tube adjacent maximum restriction of the Venturi tube, a conduit for exhaust gases of the internal combustion engine having a discharge end opening into the Venturi tube just before maximum restriction of said tube, a valve controlling flow of exhaust gases through'said conduit, a throttle controlling flow of combustible mixture to the engine, and means for opening and closing" the valve in accordance with the position of the throttle.
  • a Venturi tube having an air inlet at one end-and at its opposite end forming a passageway supplying combustible mixture to the engine

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of The Air-Fuel Ratio Of Carburetors (AREA)

Description

April 19, 1938. w, STADLMAN 2,114,548
CARBURETOR ATTACHMENT Filed Feb. 25, 1935 ATTORNEY.
Elli
bit
Patented Apr. 19, 1938 4 Claims.
This invention relates to carburetion and more -particularly to forming a combustible mixture for an internal combustion engine; and has for its object to properly proportion and mix the air and fuel under varying conditions of load and speed. i
More particularly it is an object of the invention to increase the jet action at the fuel nozzle 01' the carburetor which forms the combustible mixture, so as to generate a dry gas, and prefer'ably to increase the jet action as the throttle is opened.
It is a further object of the invention to increase the pressure of the air which at the Venturl tube of the carburetor entrains and then' ntomizes and vaporizes the fuel, and to preferably increase the air pressure as the throttle is opened; v
i urther objects of the invention will be readily understood from the following description of the accompanying drawing, in which:
Fig. l is a side elevation of the invention, with the throttle in idling position.
Fig. 2 is a transverse section on the'line ti oi l, with the throttle in full open position.
Fig. 3 is an axial section on the line ii-t of The invention is applicable to a usual carburetor for an internal combustion engine, the car huretor including fuel nozzle i supplied from a heat chamber 2 and having an air intake from whence the air flows through a Venturi tube i which surrounds the fuel nozzle. As shown at l the fuel nozzle preferably opens into the i'entm'i tube in the direction of flow through the Venturi tube, and the discharge orifice of the fuel nozzle is preferably at or adjacent the marinlum cross-sectional restriction of the Venturi tube. A combustible mixture is thus formed in usual manner and is drawn through the intake manifold b and past the throttle valve t'into the engine cylinders, the exhaust manifold for the engine cylinders being shown at l.
The present invention preferably provides additional flow into the. intake manifold it as the throttle it is opened; and this additional flow is under considerable pressure and creates turbulence in the intake-manifold as well as reducin the vacuum therein, and is preferably also adapted to raise the temperature or the combustible mixture and to supply exhaust gases thereto.
For this purpose a housing it) may be mounted in the intake manifold b, preferably between its usual coupling flanges iii-i2, the housing being held in place by the usual flange bolts it. The
housing has a bore M in alinement with and slightly larger than the bore of the intake manifold, and a sleeve I5 is mounted in this bore and isheld in place between the flanges ll-I2 as shown at Fig. 3. The sleeve l5 has a series of circumferentially spaced ports I6 opening into the bore of the intake manifold, and the housing it! forms an annular chamber l'l surrounding and communicating with the ports, with a passageway [8 leading to the annular chamber.
At its outer end the passageway l8 communicates with a valve chamber it which is formed in housing it, the valve chamber being shown as cylindrical and adapted to receive a rotary valve 2%, and the valve chamber has an intake nipple 2i circumferentially spaced from the passageway it. The valve ill when turned to the position shown at Fig. i closes the intake nipple 2i, but iscut away at one side as shown at 22 so that when turned in the direction of arrow A to the position shown at Figs. 2 and 3, it opens the nile ii to the passageway in.
The valve it may be rotated by a lever 23 which is linked at it to the lever 25 for the throttle valve t, so that when throttle rod ill is shifted in the direction to open the throttle t, the valve it is also opened as shown at Fig. 3,- and when the throttle is closed to idling position the valve 2b is also closed as shown at Fig. l.
Exhaust gases from theengine are preferably supplied to the intake nipple 2 i, and for this purpose a conduit til communicates with the exhaust manifold l and leads to the intake nipple.
The invention provides means for increasing the jet action at fuel nozzle i, preferably as the throttle lt is opened, and for this purpose additional flow under pressure is supplied to the mouth of the Venturi tube 45 for entraining and then atomizing and vaporizing fuel, and this additional flow is preferably adapted to raise the temperature of the fuel which is drawn into the Venturi tube and to supply exhaustgases theretov For this purpose a conduit '35 has a discharge end tt surrounding the fuel nozzle i in the mouth of Venturi tube t, with the discharge end {it preferably at or adjacent the discharge-orifice of, the fuel nozzle as shown at Fig. 1, whereby the discharge end tilt is preferably at or adjacent the maximum cross-sectional restriction of the Venturi tube. The conduit 35 is preferably supplied with exhaust gases from the manifold i, the supply being preferably cor'itrolled in accordance with the position of the throttle 8. As an instance of this arrangement the valve chamber it may have an outlet nipple 3i communicating with the conduit 35, and the cut away portion of valve 20 may be so arranged that when the valve is turned for opening the intake nipple 2! to the passageway l8, it also opens the intake nipple to the outlet nipple 31 as shown at Fig. 3. 4
In operation, when the throttle 6 is closed to idling position the valve 20 is also c1osed,.so that the carburetor supplies a combustible mixture in usual manner, with suction past the nearly completely closed throttle drawing in air through intake 3 so that the air entrains and then atomizes and vaporizes fuel at the pointvof maximum cross-sectional restriction of the Venturi tube 4, but as the throttle 6 is opened the valve 20 is correspondingly opened, whereby exhaust gases are supplied via conduit 35 for discharge into the stream of air being drawn in through the air intake 3, with" said discharge adjacent the orifice of the fuel nozzle and adjacent the point of maximum cross-sectional restriction of the Venturi tube 4. The exhaust gases thus function with maximum efflciency to increase the jet action of the stream of air for drawing fuel into the Venturi tube, thereby maintaining the proper fuel ratio for different speeds and loads and heating the fuel for complete vaporization, and'by forming a part of the combustible mixture insuring fuel economy and tending to maintain the same proportion of exhaust gases in the fuel charge at different positions of the throttle.
At the same time a part of the exhaust gases, controlled by the position of valve 20 which is in turn controlledby the position of the throttle,
are preferably discharged through ports l8 into the combustible mixture in the intake manifold 5, the additional flow being introduced at a point between the throttle valve 6 and the cylinders of the engine as shown at Fig. 1. These exhaust gases being under pressure reduce the vacuum in the intake manifold as the engine is accelerated, thereby assisting in maintaining the proper fuel ratio for different speeds .and loads, and also create turbulence in the intake manifold, insuring a thorough mixture of the air and fuel.
The invention thus provides an efllcient combustible mixture with the air and fuel properly proportioned for varying conditions of speed and load, and with the exhaust gases which are supplied to the Venturi tube at its maximum crosssectional restriction and at the discharge orifice of the fuel nozzle, thereby functioning with maximum efiiciency to increase the jet action and supply heat for vaporizing the fuel, thus supercharging the combustible mixture and increasing the volumetric efilciency of the engine, making it, possible to burn low grade fuel oils in a low compression, high speed engine,
' Lclaim: v
,1. In a carburetor adapted to form a combustible mixture for an internal combustion engine, a Venturi tube having an air inlet at one end and at its opposite end forming a passageway supplying combustible mixture to the engine,
the throttle.
2. In a carburetor adapted to form a combustible mixture for an internal combustion engine, a Venturi tube having an air inlet at one end and at its opposite end forming a passageway supplying combustible mixture to the engine,
a fuel jet having a discharge orifice opening into the Venturl tube in the direction of flow therethrough and at a point just before'maximumu'estriction of the Venturi tube, a conduit for fluid which will mix with and form a component of the combustible mixture, said conduit having a discharge end surrounding the fuel jet and opening into the Venturi tube adjacent the discharge orifice of the jet. a valve controlling flow of fluid through the conduit, a throttle controlling flow of combustible mixture to the engine, and means for opening and closing the valve in accordance with the position of the throttle.
3. In a carburetor adapted to form a combustible mixture for an internal combustion engine, a Venturi tube having an air inlet at one end and at its opposite end forming a passage-;- way supplying combustible mixture to the engine, a fuel jet having a discharge orifice opening into the Venturi tube adjacent maximum restriction of the Venturi tube, a conduit for exhaust gases of the internal combustion engine having a discharge end opening into the Venturi tube just before maximum restriction of said tube, a valve controlling flow of exhaust gases through'said conduit, a throttle controlling flow of combustible mixture to the engine, and means for opening and closing" the valve in accordance with the position of the throttle.
4. In a carburetor adapted to 'form a combustible mixture for an internal combustion engine, a Venturi tube having an air inlet at one end-and at its opposite end forming a passageway supplying combustible mixture to the engine,
a fuel jet having a discharge orifice-opening into the Venturi tube adjacent maximum restriction
US8035A 1935-02-25 1935-02-25 Carburetor attachment Expired - Lifetime US2114548A (en)

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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2506812A (en) * 1946-08-21 1950-05-09 Russell Andrew Craig Carburetor
US2607570A (en) * 1946-08-26 1952-08-19 Daniel R Barnett Diesel carburetor attachment
US3237615A (en) * 1962-11-13 1966-03-01 Richfield Oil Corp Exhaust recycle system
US3455283A (en) * 1966-09-01 1969-07-15 Harold Phelps Inc Fuel feeding system
US3465736A (en) * 1967-10-09 1969-09-09 Atlantic Richfield Co Exhaust recycle control mechanism
US3867910A (en) * 1973-03-27 1975-02-25 Walter Galonska Engine construction and operating method utilizing exhaust gas as a source of energy
US3934564A (en) * 1973-01-22 1976-01-27 Volkswagenwerk Aktiengesellschaft Control valve for exhaust gas recycling apparatus
US4011845A (en) * 1972-06-02 1977-03-15 Texaco Inc. Internal combustion engine operation utilizing exhaust gas recirculation
US4061119A (en) * 1976-04-27 1977-12-06 Toyota Jidosha Kogyo Kabushiki Kaisha Exhaust gas recirculation apparatus for an internal combustion engine
US4596210A (en) * 1982-09-04 1986-06-24 Kohlensaurewerke C. G. Rommenholler Gmbh Method and device for dissolving gas, especially carbon dioxide, in liquid fuel and for distributing the fuel in a supersaturated state through the combustion air
US4693226A (en) * 1986-06-02 1987-09-15 Ford Motor Company EGR control system
EP1152141A1 (en) * 2000-05-05 2001-11-07 Siemens Aktiengesellschaft Method and apparatus for recirculating exhaust gas into an inlet air stream
GB2526594A (en) * 2014-05-29 2015-12-02 Gm Global Tech Operations Inc A device for connecting an exhaust gas recirculation conduit to an intake pipe

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2506812A (en) * 1946-08-21 1950-05-09 Russell Andrew Craig Carburetor
US2607570A (en) * 1946-08-26 1952-08-19 Daniel R Barnett Diesel carburetor attachment
US3237615A (en) * 1962-11-13 1966-03-01 Richfield Oil Corp Exhaust recycle system
US3455283A (en) * 1966-09-01 1969-07-15 Harold Phelps Inc Fuel feeding system
US3465736A (en) * 1967-10-09 1969-09-09 Atlantic Richfield Co Exhaust recycle control mechanism
US4011845A (en) * 1972-06-02 1977-03-15 Texaco Inc. Internal combustion engine operation utilizing exhaust gas recirculation
US3934564A (en) * 1973-01-22 1976-01-27 Volkswagenwerk Aktiengesellschaft Control valve for exhaust gas recycling apparatus
US3867910A (en) * 1973-03-27 1975-02-25 Walter Galonska Engine construction and operating method utilizing exhaust gas as a source of energy
US4061119A (en) * 1976-04-27 1977-12-06 Toyota Jidosha Kogyo Kabushiki Kaisha Exhaust gas recirculation apparatus for an internal combustion engine
US4596210A (en) * 1982-09-04 1986-06-24 Kohlensaurewerke C. G. Rommenholler Gmbh Method and device for dissolving gas, especially carbon dioxide, in liquid fuel and for distributing the fuel in a supersaturated state through the combustion air
US4693226A (en) * 1986-06-02 1987-09-15 Ford Motor Company EGR control system
EP1152141A1 (en) * 2000-05-05 2001-11-07 Siemens Aktiengesellschaft Method and apparatus for recirculating exhaust gas into an inlet air stream
GB2526594A (en) * 2014-05-29 2015-12-02 Gm Global Tech Operations Inc A device for connecting an exhaust gas recirculation conduit to an intake pipe

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