US1597039A - Carburetor - Google Patents

Carburetor Download PDF

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Publication number
US1597039A
US1597039A US608706A US60870622A US1597039A US 1597039 A US1597039 A US 1597039A US 608706 A US608706 A US 608706A US 60870622 A US60870622 A US 60870622A US 1597039 A US1597039 A US 1597039A
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United States
Prior art keywords
air
housing
carburetor
thermostat
engine
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Expired - Lifetime
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US608706A
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Raymond M Anderson
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Individual
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Priority to US608706A priority Critical patent/US1597039A/en
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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
    • F02M7/00—Carburettors with means for influencing, e.g. enriching or keeping constant, fuel/air ratio of charge under varying conditions
    • F02M7/12—Other installations, with moving parts, for influencing fuel/air ratio, e.g. having valves
    • F02M7/18—Other installations, with moving parts, for influencing fuel/air ratio, e.g. having valves with means for controlling cross-sectional area of fuel-metering orifice
    • F02M7/20—Other installations, with moving parts, for influencing fuel/air ratio, e.g. having valves with means for controlling cross-sectional area of fuel-metering orifice operated automatically, e.g. dependent on altitude
    • 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
    • F02M1/00—Carburettors with means for facilitating engine's starting or its idling below operational temperatures
    • 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
    • F02M2700/00—Supplying, feeding or preparing air, fuel, fuel air mixtures or auxiliary fluids for a combustion engine; Use of exhaust gas; Compressors for piston engines
    • F02M2700/43—Arrangements for supplying air, fuel or auxiliary fluids to a combustion space of mixture compressing engines working with liquid fuel
    • F02M2700/4302—Arrangements for supplying air, fuel or auxiliary fluids to a combustion space of mixture compressing engines working with liquid fuel whereby air and fuel are sucked into the mixture conduit
    • F02M2700/434—Heating or cooling devices
    • F02M2700/4342—Heating devices
    • F02M2700/4345—Heating devices by means of exhaust gases

Definitions

  • This invention relates to thermostats adapted to be used with carburetors for internal combustion engines.
  • thermostats when applied to carburetors has been that they took to long to operate when they responded to engine (e. g. jacket) temperature so that they delivered an excessively rich mixture while the engine was warming up, and when the need for the excessively rich mixture no longer existed as the center of the piston heats up more quickly than any part of the engine except the exhaust valve and the temperature of the piston is a determining factor in mixture proportion.
  • engine e. g. jacket
  • the figure shows a cross sectional view of the thermostat applied to a carburetor.
  • C is the air entrance
  • D is the Venturi tube into which discharges the fuel nozzle E which obtains its fuel from the constant level reservoir F through an orifice 2 which is controlled by a needle valve 1 having a tapered point 12.
  • the upper portion of this needle valve 1 is threaded and provided with a screw-driver slot 13.
  • This needle is threaded into a bushing 3 which is supported by the thermostat 9.
  • the thermostat 9 is slotted and engages with a slot 4 in the bushing 3.
  • the other leg of the -U-shaped, thermostat 9 engages with a slot 8 in a piece 7, which is threaded into the casting 10 of the carburetor.v
  • the piece 7 is provided with a cylindrical passage 6 in which slides the bushing 3.
  • a recess 5 is provided in the bushing 3 and the pin 11 is placed in the piece 7 so as to limit the upward and downward movement of the bushing 3.
  • a housing G isprovided-en: closing, the thermostat 9.
  • a pipe H connects this housing with the outside of the exhaust pipe J.
  • a passage A connects the inside of the housing G with the outlet side of the Venturi tube D.
  • a bypass B also connects the housing G with the mixture outlet L in advance of the throttle valve K.
  • An auxiliary air vented reservoir M is interposed between the nozzle E and the fuel outlet 2.
  • the air vent N draws its air from the interior of the housing G.
  • the bypass 0 leads to the outlet P adjacent to and in advance of the throttle K.
  • An opening Q- admits diluting air into this bypass and this opening Q also obtains its air from the interior of the housing G.
  • a carburetor having a cold air entrance, a mixing chamber, and a mixture outlet, a throttle valve therein, thermostatic means for controlling the mixture ratio, a housing enclosing said thermostatic means, asource of heated air, a passage connecting said housing means to the mixture outlet above the throttle valve therein, another pipe connecting said housing to the source of heated a1r.

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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

Aug. 24 1926.
. R. M. ANDERSON CARBURETOR Filed Dec. 2:5, 1922 RAYMOND M. ANDERSON I N VEN TOR.
, ATTORNEY.
Patented Aug. 24, 1926.
UNITED STATES RAYMOND M. ANDERSON, 0]?
PATENT OFFICE.
OARBURETOR.
Application filed December 23, 1922. Serial No. 608,706.
This invention relates to thermostats adapted to be used with carburetors for internal combustion engines.
The difficulty heretofore experienced with thermostats when applied to carburetors has been that they took to long to operate when they responded to engine (e. g. jacket) temperature so that they delivered an excessively rich mixture while the engine was warming up, and when the need for the excessively rich mixture no longer existed as the center of the piston heats up more quickly than any part of the engine except the exhaust valve and the temperature of the piston is a determining factor in mixture proportion.
The figure shows a cross sectional view of the thermostat applied to a carburetor.
In the figure C is the air entrance, D is the Venturi tube into which discharges the fuel nozzle E which obtains its fuel from the constant level reservoir F through an orifice 2 which is controlled by a needle valve 1 having a tapered point 12. The upper portion of this needle valve 1 is threaded and provided with a screw-driver slot 13. This needle is threaded into a bushing 3 which is supported by the thermostat 9. The thermostat 9 is slotted and engages with a slot 4 in the bushing 3. The other leg of the -U-shaped, thermostat 9 engages with a slot 8 in a piece 7, which is threaded into the casting 10 of the carburetor.v The piece 7 is provided with a cylindrical passage 6 in which slides the bushing 3. A recess 5 is provided in the bushing 3 and the pin 11 is placed in the piece 7 so as to limit the upward and downward movement of the bushing 3. This structural detail of the thermostatic control is covered by my copending application, Serial No. 577,507, filed July 26, 1922. A housing G isprovided-en: closing, the thermostat 9. A pipe H connects this housing with the outside of the exhaust pipe J. A passage A connects the inside of the housing G with the outlet side of the Venturi tube D. A bypass B also connects the housing G with the mixture outlet L in advance of the throttle valve K. An auxiliary air vented reservoir M is interposed between the nozzle E and the fuel outlet 2. The air vent N draws its air from the interior of the housing G. The bypass 0 leads to the outlet P adjacent to and in advance of the throttle K. An opening Q- admits diluting air into this bypass and this opening Q also obtains its air from the interior of the housing G.
Operatz'0n.-By reason of the existence of the passages A and B connecting the chamber G with the mixing chamber and mixture outlet respectively, the vent N communicating to the chamber M, orificeQ to the bypass 0, and the pipe H connecting the chamber G with the outside of the exhaust pipe it follows that whether the throttle is open or shut and whether the engine is running fast or slow. provided the engine is operating, there will be a flow of air at all times down H and into G and this air will be heated by contact with the exhaust pipe J. It therefore follows that the thermostat 9 will be raised in temperature at a greater rate than the temperature of the engine by reason of the superheated air admitted from the exhaust pipe.
What I claim is A carburetor having a cold air entrance, a mixing chamber, and a mixture outlet, a throttle valve therein, thermostatic means for controlling the mixture ratio, a housing enclosing said thermostatic means, asource of heated air, a passage connecting said housing means to the mixture outlet above the throttle valve therein, another pipe connecting said housing to the source of heated a1r.
In testimony whereof I aflix my signature.
RAHIOND M. ANDERSON.
US608706A 1922-12-23 1922-12-23 Carburetor Expired - Lifetime US1597039A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US608706A US1597039A (en) 1922-12-23 1922-12-23 Carburetor

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Application Number Priority Date Filing Date Title
US608706A US1597039A (en) 1922-12-23 1922-12-23 Carburetor

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US1597039A true US1597039A (en) 1926-08-24

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US608706A Expired - Lifetime US1597039A (en) 1922-12-23 1922-12-23 Carburetor

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996012883A1 (en) * 1994-10-21 1996-05-02 Aktiebolaget Electrolux Temperature conpensated fuel jet

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996012883A1 (en) * 1994-10-21 1996-05-02 Aktiebolaget Electrolux Temperature conpensated fuel jet

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