GB1410463A - Regulators for internal combustion engines - Google Patents

Regulators for internal combustion engines

Info

Publication number
GB1410463A
GB1410463A GB148874A GB148874A GB1410463A GB 1410463 A GB1410463 A GB 1410463A GB 148874 A GB148874 A GB 148874A GB 148874 A GB148874 A GB 148874A GB 1410463 A GB1410463 A GB 1410463A
Authority
GB
United Kingdom
Prior art keywords
switch
engine
jan
warning
fuel
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
GB148874A
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 GB1410463A publication Critical patent/GB1410463A/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
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/14—Introducing closed-loop corrections
    • F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
    • F02D41/1493—Details
    • F02D41/1495—Detection of abnormalities in the air/fuel ratio feedback system

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)

Abstract

1410463 Automatic control of exhaust gases ROBERT BOSCH GmbH 11 Jan 1974 [12 Jan 1973] 01488/74 Heading G3R In a system for regulating the fuel/air ratio supplied to an internal combusion engine in response to a measurement of its exhaust gases, the ratio being switched alternately between upper and lower values by a "threshold value switch", a timing element is arranged to impair the operation of the engine and/or give a warning if the period between switch operations exceeds a predetermined value. It is explained that failure of the exhaust gas probe would result in a too rich mixture and the object is to detect such failure and switch the mixture to "too lean" and/or give a warning. The voltage from the probe 1 is compared with a reference value from a Zener 11 in a bridge network connected to an amplifier 15 which saturates in a direction according to the error to turn on one or the other of transistors 21, 22. These apply a proportion of the supply voltage to an integrating amplifier 29 (whose time constant is adjusted by selector switch 27), the output of which adjusts the fuel/air ratio by unspecified means. At each negative switch over a monostable 37 is triggered. In the astable state 37 is blocked and a capacitor 44 is charged via 42, 43, and during the stable state 44 discharges through 45. Normally the charge on 44 is always sufficient to hold a switching transistor 49 conducting, but in the event of a fault 44 discharges enough to cause 49 to block which, via diode 54, switches the integrator 29 permanently to the weak condition. The action of the timer is inhibited by signals applied to terminal 52 e.g. during engine warm up.
GB148874A 1973-01-12 1974-01-11 Regulators for internal combustion engines Expired GB1410463A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2301354A DE2301354C3 (en) 1973-01-12 1973-01-12 Device for regulating the fuel-air ratio in internal combustion engines

Publications (1)

Publication Number Publication Date
GB1410463A true GB1410463A (en) 1975-10-15

Family

ID=5868813

Family Applications (1)

Application Number Title Priority Date Filing Date
GB148874A Expired GB1410463A (en) 1973-01-12 1974-01-11 Regulators for internal combustion engines

Country Status (7)

Country Link
US (1) US3916848A (en)
JP (1) JPS5629100B2 (en)
DE (1) DE2301354C3 (en)
FR (1) FR2214046B1 (en)
GB (1) GB1410463A (en)
IT (1) IT1006851B (en)
NL (1) NL7400418A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2209854A (en) * 1987-09-16 1989-05-24 Bosch Gmbh Robert Motor vehicle control

Families Citing this family (45)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS572896B2 (en) * 1973-01-31 1982-01-19
DE2422938C2 (en) * 1974-05-11 1982-07-08 Robert Bosch Gmbh, 7000 Stuttgart Switching device for the controlled addition of additional air to the exhaust gas of an internal combustion engine
GB1492284A (en) * 1974-11-06 1977-11-16 Nissan Motor Air fuel mixture control apparatus for internal combustion engines
US3948228A (en) * 1974-11-06 1976-04-06 The Bendix Corporation Exhaust gas sensor operational detection system
JPS5155824A (en) * 1974-11-12 1976-05-17 Nissan Motor Nainenkikanno nenryoseigyosochi
SE411784B (en) * 1975-04-18 1980-02-04 Bosch Gmbh Robert SET AND DEVICE FOR DETERMINING THE DURATION OF FUEL SUPPLY PULSE
JPS5815648Y2 (en) * 1975-06-03 1983-03-30 日産自動車株式会社 Kuunenbiseigiyosouchi
US4178884A (en) * 1975-06-05 1979-12-18 Nippondenso Co., Ltd. Method and system to control the mixture air-to-fuel ratio
JPS51144828A (en) * 1975-06-09 1976-12-13 Nissan Motor Co Ltd Synthetic exhaust countermeasure system for internal combustion engine
JPS51149424A (en) * 1975-06-17 1976-12-22 Nippon Denso Co Ltd Electronic air-fuel ratio feed back control device
JPS5840010B2 (en) * 1975-12-27 1983-09-02 日産自動車株式会社 Kuunenpiseigiyosouchi
JPS5281436A (en) * 1975-12-27 1977-07-07 Nissan Motor Co Ltd Air fuel ratio controller
DE2604160C2 (en) * 1976-02-04 1985-08-08 Robert Bosch Gmbh, 7000 Stuttgart Control device for influencing the operating mixture fed to an internal combustion engine
JPS5297027A (en) * 1976-02-09 1977-08-15 Nissan Motor Co Ltd Air fuel ratio controller
JPS6010170B2 (en) * 1976-02-12 1985-03-15 日産自動車株式会社 Air fuel ratio control device
DE2608245C2 (en) * 1976-02-28 1983-08-11 Robert Bosch Gmbh, 7000 Stuttgart Method and device for monitoring the operational readiness of an oxygen measuring probe
IT1084410B (en) * 1976-08-25 1985-05-25 Bosch Gmbh Robert DEVICE FOR DETERMINING THE QUANTITY OF FUEL SUPPLIED BY INJECTION TO AN ENDOTHERMAL ENGINE, OR DEVICE REGULATOR OF THE MIXING RATIO FOR THE OPERATING MIXTURE TO BE ADDED TO AN ENDOTHERMAL ENGINE.
JPS5345316U (en) * 1976-09-20 1978-04-18
JPS5340133A (en) * 1976-09-23 1978-04-12 Nippon Denso Co Ltd Fuel-air ratio feedback control system
JPS5360423A (en) * 1976-11-12 1978-05-31 Nissan Motor Co Ltd Warning device to abnormality of air fuel ratio controller
JPS5362025A (en) * 1976-11-15 1978-06-03 Nissan Motor Co Ltd Trouble alarming device in air-fuel ratio control system
DE2700629A1 (en) * 1977-01-08 1978-07-20 Bosch Gmbh Robert DEVICE FOR DETECTING THE READINESS OF A LAMBDA PROBE
JPS53132616A (en) * 1977-04-26 1978-11-18 Aisan Ind Co Ltd Air-to-fuel ratio control system in internal combustion engine
JPS5458110A (en) * 1977-10-19 1979-05-10 Hitachi Ltd Automobile controller
JPS54105619A (en) * 1978-02-06 1979-08-18 Nissan Motor Co Ltd Emergency annunciator for air fuel ratio controller
DE2805805C2 (en) * 1978-02-11 1989-07-20 Robert Bosch Gmbh, 7000 Stuttgart Method and device for operating a fuel supply system with lambda control
JPS54155322A (en) * 1978-05-26 1979-12-07 Toyota Motor Corp Ignition time controller for engine
US4218998A (en) * 1978-07-06 1980-08-26 Lucas Industries Limited Spark ignition systems for internal combustion engines
DE2903638A1 (en) * 1979-01-31 1980-08-14 Bosch Gmbh Robert Microprocessor controlled safety monitor in motor vehicle - re-runs program to avoid erroneous operation due to parasitic disturbances
DE3024606A1 (en) * 1980-06-28 1982-01-28 Robert Bosch Gmbh, 7000 Stuttgart CONTROL DEVICE FOR THE COMPOSITION OF THE OPERATING MIXTURE COMING INTO AN INTERNAL COMBUSTION ENGINE
JPS5770931A (en) * 1980-10-06 1982-05-01 Honda Motor Co Ltd Trouble backup device for air fuel ratio feddback controller of internal combustion engine
DE3339429A1 (en) * 1983-10-29 1985-05-09 Volkswagenwerk Ag, 3180 Wolfsburg System for reducing exhaust pollutants
JPS59163144U (en) * 1984-03-14 1984-11-01 株式会社日立製作所 Abnormality detection device for air-fuel ratio feedback device
JPS6056253B2 (en) * 1984-09-19 1985-12-09 日産自動車株式会社 Air-fuel ratio feedpack control device
JPH0697002B2 (en) * 1984-11-30 1994-11-30 日本電装株式会社 Air-fuel ratio sensor pass / fail judgment device
JPS6293644A (en) * 1985-10-21 1987-04-30 Honda Motor Co Ltd Method for judging characteristic of exhaust gas concentration detector
US4671243A (en) * 1986-02-28 1987-06-09 Motorola, Inc. Oxygen sensor fault detection and response system
DE3627437C2 (en) * 1986-08-13 1994-05-26 Bayerische Motoren Werke Ag Protection device for an exhaust gas catalytic converter of an internal combustion engine with a lambda control device
JPS62218637A (en) * 1986-10-09 1987-09-26 Nissan Motor Co Ltd Air-fuel ratio feedback control device
DE3928709A1 (en) * 1989-08-30 1991-03-07 Bosch Gmbh Robert METHOD AND DEVICE FOR CHECKING THE FUNCTIONALITY OF AN EXHAUST GAS EXHAUST HEATING AND ITS SUPPLY SYSTEM
JP2863229B2 (en) * 1989-12-22 1999-03-03 三菱電機株式会社 Air-fuel ratio control device for internal combustion engine
DE4108694C2 (en) * 1991-03-16 1994-10-20 Webasto Ag Fahrzeugtechnik Method for operating a regeneration device for a particle filter and circuit arrangement therefor
US5539638A (en) * 1993-08-05 1996-07-23 Pavilion Technologies, Inc. Virtual emissions monitor for automobile
US5386373A (en) * 1993-08-05 1995-01-31 Pavilion Technologies, Inc. Virtual continuous emission monitoring system with sensor validation
US5970426A (en) * 1995-09-22 1999-10-19 Rosemount Analytical Inc. Emission monitoring system

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2116097B2 (en) * 1971-04-02 1981-01-29 Bosch Gmbh Robert Device for regulating the air ratio λ of the fuel-air mixture fed to an internal combustion engine
DE2206276C3 (en) * 1972-02-10 1981-01-15 Robert Bosch Gmbh, 7000 Stuttgart Method and device for reducing harmful components of exhaust gas emissions from internal combustion engines

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2209854A (en) * 1987-09-16 1989-05-24 Bosch Gmbh Robert Motor vehicle control
GB2209854B (en) * 1987-09-16 1992-03-18 Bosch Gmbh Robert Method of and equipment for reporting a fault condition in a motor vehicle

Also Published As

Publication number Publication date
IT1006851B (en) 1976-10-20
NL7400418A (en) 1974-07-16
FR2214046B1 (en) 1978-03-17
DE2301354C3 (en) 1981-03-12
JPS5629100B2 (en) 1981-07-06
US3916848A (en) 1975-11-04
FR2214046A1 (en) 1974-08-09
JPS49108429A (en) 1974-10-15
DE2301354A1 (en) 1974-07-25
DE2301354B2 (en) 1980-06-26

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PE20 Patent expired after termination of 20 years

Effective date: 19940110