GB1429351A - Systems for regulating the mass ratio of the fuel/air mixture of internal combustion engines - Google Patents

Systems for regulating the mass ratio of the fuel/air mixture of internal combustion engines

Info

Publication number
GB1429351A
GB1429351A GB1893573A GB1893573A GB1429351A GB 1429351 A GB1429351 A GB 1429351A GB 1893573 A GB1893573 A GB 1893573A GB 1893573 A GB1893573 A GB 1893573A GB 1429351 A GB1429351 A GB 1429351A
Authority
GB
United Kingdom
Prior art keywords
piston
armature
orifice
adjusted
alternative
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
GB1893573A
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 GB1429351A publication Critical patent/GB1429351A/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
    • 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
    • Y10S261/74—Valve actuation; electrical
    • 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
    • Y10S261/82—Upper end injectors

Abstract

1429351 Automatic control of exhaust gas ROBERT BOSCH GmbH 19 April 1973 [22 April 1972] 18935/73 Heading G3R [Also in Division F1] For an I.C. engine supplied via a carburetter of the type in which a fuel orifice opens into a mixing chamber in which the pressure is adjusted to be substantially constant a system is provided in which the size of the orifice is adjusted in a continuous manner in response to electrical signals which are proportional to the oxygen content of the exhaust gas. The output of an oxygen sensor (16), Fig. 1 (not shown) is compared with a reference (at 17) and the result integrated by a device (18) whose time constant may be automatically varied according to the duration of the error. The result is amplified to effect the required adjustment. In the carburetter shown two fixed coils 43 are wound in opposition and act upon a permanent magnet armature 31 attached to a needle valve 34. It is stated that since the net magnetic field is zero when the O 2 content is correct displacement of pressure responsive piston 22 cannot react upon the armature. In one alternative embodiment Fig. 3 (not shown) only one coil is provided, the current through which is average for zero error, the armature is of soft iron and the magnetic effect operates against a spring (54) whose rate is chosen to compensate for the effect of piston displacement. No fluid damping is provided. In a second alternative Fig. 4 (not shown) a single coil is carried by the piston; the armature is not damped but the piston is. In another alternative Fig. 5 (not shown) the orifice in which the needle valve acts is rotatable by an electromagnet to vary the opening to a passage which by-passes the main orifice. In a modification the flow through the main orifice may be adjusted by an electromagnetically operated spool valve or lamellar closure (iris "diaphragm"). In a further alternative Fig. 6 (not shown) the arrangement is similar to that of Fig. 2 except that the armature (soft iron) is attached to the piston which therefore is adjusted, carrying the needle with it. In a final alternative Fig. 7 (not shown) the chambers 25 and 28 of a carburetter like Fig. 2 are inter-connected via an electromagnetic valve Fig. 8 (not shown), operation of which varies the pressure difference between 25 and 28 and hence the height of the piston and needle.
GB1893573A 1972-04-22 1973-04-19 Systems for regulating the mass ratio of the fuel/air mixture of internal combustion engines Expired GB1429351A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2219768A DE2219768A1 (en) 1972-04-22 1972-04-22 DEVICE FOR REGULATING THE MASS RATIO OF THE FUEL-AIR MIXTURE OF A COMBUSTION ENGINE

Publications (1)

Publication Number Publication Date
GB1429351A true GB1429351A (en) 1976-03-24

Family

ID=5842913

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1893573A Expired GB1429351A (en) 1972-04-22 1973-04-19 Systems for regulating the mass ratio of the fuel/air mixture of internal combustion engines

Country Status (6)

Country Link
US (1) US3855974A (en)
JP (1) JPS5531305B2 (en)
DE (1) DE2219768A1 (en)
FR (1) FR2174501A5 (en)
GB (1) GB1429351A (en)
IT (1) IT984081B (en)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5012438A (en) * 1973-06-04 1975-02-08
US4036186A (en) * 1973-06-04 1977-07-19 Nippon Soken, Inc. Air-fuel mixture ratio correcting system for carburetor
JPS5219254B2 (en) * 1973-09-19 1977-05-26
DE2357465A1 (en) * 1973-11-17 1975-05-22 Volkswagenwerk Ag CARBURETTORS FOR COMBUSTION MACHINERY
US4108122A (en) * 1975-04-30 1978-08-22 The Bendix Corporation Air/fuel ratio for an internal combustion engine controlled by gas sensor in intake manifold
FR2315008A1 (en) * 1975-06-18 1977-01-14 Laprade Bernard CONSTANT VACUUM CARBURETORS UPGRADES
JPS52110333A (en) * 1976-03-08 1977-09-16 Nissan Motor Co Ltd Fuel-air ratio control device
JPS52135923A (en) * 1976-05-08 1977-11-14 Nissan Motor Co Ltd Air fuel ratio control equipment
US4208358A (en) * 1977-05-27 1980-06-17 General Motors Corporation Carburetor and method of calibration
US4178332A (en) * 1978-01-11 1979-12-11 General Motors Corporation Carburetor and method of calibration
JPS54140023A (en) * 1978-04-24 1979-10-30 Ntn Toyo Bearing Co Ltd Fuel injecting device
US4175103A (en) * 1978-04-17 1979-11-20 General Motors Corporation Carburetor
US4217314A (en) * 1978-06-26 1980-08-12 General Motors Corporation Carburetor and method of operation
DE2831605C2 (en) * 1978-07-19 1982-03-11 Pierburg Gmbh & Co Kg, 4040 Neuss Carburetors for internal combustion engines
JPS55119934A (en) * 1979-03-07 1980-09-16 Toyota Motor Corp Variable venturi type carburetor
JPS56540A (en) * 1979-06-12 1981-01-07 Aisan Ind Co Ltd Floatless type variable venturi carburettor
SE416988B (en) * 1979-06-19 1981-02-16 Saab Scania Ab ARRANGEMENTS FOR CONVERSION OF A CARBON GASER ON ENGINE ENGINES
FR2492001B2 (en) * 1979-12-06 1987-01-23 Pierburg Gmbh & Co Kg MIXTURE FORMING DEVICE FOR INTERNAL COMBUSTION ENGINES
JPS6135720Y2 (en) * 1980-08-26 1986-10-17
US4377143A (en) * 1980-11-20 1983-03-22 Ford Motor Company Lean air-fuel control using stoichiometric air-fuel sensors
US4323521A (en) * 1980-12-18 1982-04-06 Henri Morgenroth Constant depression carburetor
JPS56118947U (en) * 1981-01-21 1981-09-10
US4318869A (en) * 1981-02-17 1982-03-09 General Motors Corporation Carburetor
US5065611A (en) * 1989-08-15 1991-11-19 The Foxboro Company System for calibrating the span of pressure measuring instruments
ES2098174B1 (en) * 1993-02-09 1998-01-01 Sanchez Velasco Clemente Jesus ADDITIONAL INJECTION CARBURETTOR AIR VARIABLE AND FUEL, CONTROLLED THROUGH CENTRAL OSCILLATION AXLE EMULSOR FIXED TO PLATE WITH AXIAL MOVEMENT BY DIRECT LEVER.
US6311959B1 (en) * 1999-04-22 2001-11-06 Applied Materials, Inc. Method and apparatus for generating controlled mixture of organic vapor and inert gas

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3086353A (en) * 1960-03-03 1963-04-23 Thompson Ramo Wooldridge Inc Afterburner systems
US3548792A (en) * 1969-02-11 1970-12-22 Judson G Palmer Control apparatus for internal-combustion engines
US3738341A (en) * 1969-03-22 1973-06-12 Philips Corp Device for controlling the air-fuel ratio {80 {11 in a combustion engine
DE2204192C3 (en) * 1972-01-29 1979-03-22 Robert Bosch Gmbh, 7000 Stuttgart Device for improving the exhaust gases of a carburetor internal combustion engine

Also Published As

Publication number Publication date
DE2219768A1 (en) 1973-10-31
JPS5531305B2 (en) 1980-08-16
JPS4947717A (en) 1974-05-09
FR2174501A5 (en) 1973-10-12
US3855974A (en) 1974-12-24
IT984081B (en) 1974-11-20

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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