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GB1439075A - Fuel proportioning units for internal combsustion engines - Google Patents

Fuel proportioning units for internal combsustion engines

Info

Publication number
GB1439075A
GB1439075A GB4321173A GB4321173A GB1439075A GB 1439075 A GB1439075 A GB 1439075A GB 4321173 A GB4321173 A GB 4321173A GB 4321173 A GB4321173 A GB 4321173A GB 1439075 A GB1439075 A GB 1439075A
Authority
GB
United Kingdom
Prior art keywords
fuel
valve
air
open
pressure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB4321173A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of GB1439075A publication Critical patent/GB1439075A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • F02M7/14—Other installations, with moving parts, for influencing fuel/air ratio, e.g. having valves with means for controlling cross-sectional area of fuel spray nozzle
    • F02M7/16—Other installations, with moving parts, for influencing fuel/air ratio, e.g. having valves with means for controlling cross-sectional area of fuel spray nozzle operated automatically, e.g. dependent on exhaust-gas analysis
    • F02M7/17—Other installations, with moving parts, for influencing fuel/air ratio, e.g. having valves with means for controlling cross-sectional area of fuel spray nozzle operated automatically, e.g. dependent on exhaust-gas analysis by a pneumatically adjustable piston-like element, e.g. constant depression carburettors
    • 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
    • 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
    • F02M7/10—Other installations, without moving parts, for influencing fuel/air ratio, e.g. electrical means
    • F02M7/11—Altering float-chamber pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2700/00—Mechanical control of speed or power of a single cylinder piston engine
    • F02D2700/09—Other ways of controlling
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S261/00—Gas and liquid contact apparatus
    • Y10S261/67—Carburetors with vented bowl

Landscapes

  • 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)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)

Abstract

1439075 Automatic control of air/fuel ratio ROBERT BOSCH GmbH 14 Sept 1973 [15 Sept 1972] 43211/73 Heading G3R [Also in Division F1] A fuel proportioning unit for an internal combustion engine comprises a fuel chamber 5 from which fuel is drawn through a passage 14, terminating in a nozzle 13 which co-operates with a metering needle 12, to mix with air flowing through an induction pipe 1, the proportion of fuel to air being also dependent on the pressure in the fuel chamber 5, this pressure being varied in dependence on the output signal from an oxygen measuring probe 19 which projects into the exhaust pipe 18, the output signal being used to control two valves 16 and 17 which control communication between the fuel chamber and points upstream and downstream respectively of the choke region created by a piston 8 in which the needle 12 is mounted. An air storage chamber 28 is connected to the fuel chamber 5 to increase its volume in order to smooth out pulsations occurring in the inlet pipe 1. Probe 19 is a solid electrolyte tube, coated on its inner and outer surfaces with platinum electrodes and connected through Schmidt triggers 20 and 21 and amplifiers 23 and 24 to the valves 16 and 17, so that the valve 16 is only open when the probe output is below a predetermined voltage and the valve 17 is only open when the output is above a second, higher, predetermined voltage. When valve 16 is open the pressure in the fuel chamber increases and additional fuel is provided to restore the fuel/air ratio of the mixture supplied to the engine to a stoichiometric value, and when the valve 17 is open, the depression on the downstream side of the choke lowers the fuel chamber pressure to reduce the amount of fuel drawn off. Restrictors 25 in the pipes 6 and 7 and in a connecting pipe 26 reduce the pressures existing at the valves.
GB4321173A 1972-09-15 1973-09-14 Fuel proportioning units for internal combsustion engines Expired GB1439075A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2245418A DE2245418C3 (en) 1972-09-15 1972-09-15 Fuel metering system for internal combustion engines

Publications (1)

Publication Number Publication Date
GB1439075A true GB1439075A (en) 1976-06-09

Family

ID=5856483

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4321173A Expired GB1439075A (en) 1972-09-15 1973-09-14 Fuel proportioning units for internal combsustion engines

Country Status (6)

Country Link
US (1) US3900014A (en)
JP (1) JPS572900B2 (en)
DE (1) DE2245418C3 (en)
FR (1) FR2163237A5 (en)
GB (1) GB1439075A (en)
IT (1) IT995383B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2001129B (en) * 1977-07-12 1982-08-04 Ntn Toyo Bearing Co Ltd FUEL FEEDING APPARATUS FOR air fuel combustion mixture

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2530314C2 (en) * 1972-08-29 1986-07-31 Robert Bosch Gmbh, 7000 Stuttgart Carburetors for internal combustion engines
DE2423109A1 (en) * 1974-05-13 1975-12-04 Bosch Gmbh Robert FUEL INJECTION SYSTEM
US4007720A (en) * 1974-07-30 1977-02-15 Robert Bosch G.M.B.H. Fuel metering system for internal combustion engines
FR2295241A1 (en) * 1974-12-20 1976-07-16 Laprade Bernard AIR / FUEL MIXTURE CORRECTION DEVICE OF INTERNAL COMBUSTION ENGINES
GB1539727A (en) * 1974-12-31 1979-01-31 Zenith Carburetter Co Ltd Spark ignition internal combustion engine installations
GB1543569A (en) * 1975-02-22 1979-04-04 Lucas Electrical Ltd Fuel supply system for an internal combustion engine
GB1554234A (en) * 1975-07-08 1979-10-17 Bosch Gmbh Robert Fuel supply systems for internal combustion engines
JPS52149524A (en) * 1976-06-09 1977-12-12 Toyota Motor Corp Air fuel ratio control device for internal combustion engine
FR2355171A1 (en) * 1976-06-18 1978-01-13 Serruys Max CARBURETOR
US4116175A (en) * 1976-07-28 1978-09-26 General Motors Corporation Internal combustion engine ignition spark timing system modulated by cylinder combustion pressure
DE2738992C2 (en) * 1977-08-30 1982-03-25 Volkswagenwerk Ag, 3180 Wolfsburg Device for the continuous injection of fuel
JPS5849702B2 (en) * 1977-09-17 1983-11-05 株式会社日立製作所 variable venturi type carburetor
JPS57124062A (en) * 1981-01-26 1982-08-02 Aisan Ind Co Ltd Electronic control type carburetter
DE3131592A1 (en) * 1981-08-10 1983-02-24 Volkswagenwerk Ag, 3180 Wolfsburg Carburettor for internal combustion engines
JPS58106158A (en) * 1981-12-21 1983-06-24 Toyota Motor Corp Supply fuel control device for variable bench lily type carburetor
DE3425364A1 (en) * 1984-07-10 1986-01-23 Fritz Werner Industrie-Ausrüstungen GmbH, 6222 Geisenheim Gas-air mixing unit
DE3902283A1 (en) * 1989-01-26 1990-08-02 Vdo Schindling FUEL-AIR MIXTURE FOR COMBUSTION ENGINES
DE3902284A1 (en) * 1989-01-26 1990-08-02 Vdo Schindling DEVICE FOR CORRECTING THE MIXTURE COMPOSITION WHEN CHANGING THE LOAD CONDITION OF AN INTERNAL COMBUSTION ENGINE
DE4411634A1 (en) * 1994-04-02 1995-10-05 Stihl Maschf Andreas Membrane carburettor for hand operated equipment IC engine

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2244669A (en) * 1936-08-01 1941-06-10 Askania Werke Ag Control device for the fuel feed of internal combustion engines
US2239553A (en) * 1938-07-14 1941-04-22 Dodson Edward Altitude control mechanism for carburetors
FR1332625A (en) * 1962-06-04 1963-07-19 Sibe Improvements made to fuel systems for internal combustion engines
US3528787A (en) * 1967-03-21 1970-09-15 Macbee Eng Corp Fuel carburetion apparatus
US3470858A (en) * 1967-08-16 1969-10-07 George H Mycroft Apparatus for mixing air and fuel for internal combustion engines
DE2010769A1 (en) * 1970-03-06 1971-09-23 Zeyns, Johannes, Dr.-Ing., 2052 Hamburg-Kirchwerder; Enneking, Heinz, Dr. rer.nat, 2000 Hamburg Device for supplying an internal combustion engine with a mixture of combustion air and fuel
US3730157A (en) * 1970-05-25 1973-05-01 Universal Oil Prod Co Carburetor control system and method for regulating air to fuel ratio
US3742924A (en) * 1972-02-24 1973-07-03 Teledyne Ind Control of air-fuel ratio

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2001129B (en) * 1977-07-12 1982-08-04 Ntn Toyo Bearing Co Ltd FUEL FEEDING APPARATUS FOR air fuel combustion mixture

Also Published As

Publication number Publication date
DE2245418B2 (en) 1978-10-26
DE2245418A1 (en) 1974-03-21
US3900014A (en) 1975-08-19
JPS4965420A (en) 1974-06-25
DE2245418C3 (en) 1979-06-28
FR2163237A5 (en) 1973-07-20
JPS572900B2 (en) 1982-01-19
IT995383B (en) 1975-11-10

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee