GB1512464A - Air/fuel ratio control system in internal combustion engine - Google Patents

Air/fuel ratio control system in internal combustion engine

Info

Publication number
GB1512464A
GB1512464A GB845776A GB845776A GB1512464A GB 1512464 A GB1512464 A GB 1512464A GB 845776 A GB845776 A GB 845776A GB 845776 A GB845776 A GB 845776A GB 1512464 A GB1512464 A GB 1512464A
Authority
GB
United Kingdom
Prior art keywords
air
engine
fuel ratio
control system
combustion engine
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
GB845776A
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.)
Nissan Motor Co Ltd
Original Assignee
Nissan Motor Co Ltd
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
Priority claimed from JP3768075A external-priority patent/JPS51113032A/en
Priority claimed from JP3767975A external-priority patent/JPS51113031A/en
Application filed by Nissan Motor Co Ltd filed Critical Nissan Motor Co Ltd
Publication of GB1512464A publication Critical patent/GB1512464A/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
    • F02M7/23—Fuel aerating devices
    • F02M7/24—Controlling flow of aerating air
    • 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
    • F02D41/1477—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the regulation circuit or part of it,(e.g. comparator, PI regulator, output)
    • F02D41/1484—Output circuit
    • 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
    • F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
    • F02D41/2406—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using essentially read only memories
    • F02D41/2425—Particular ways of programming the data
    • F02D41/2429—Methods of calibrating or learning
    • F02D41/2451—Methods of calibrating or learning characterised by what is learned or calibrated
    • F02D41/2454—Learning of the air-fuel ratio control

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)

Abstract

1512464 Automatic control of engine exhaust NISSAN MOTOR CO Ltd 3 March 1976 [28 March 1975 (2)] 08457/76 Heading G3R In a system for controlling the air/fuel ratio of a multi-cylinder I.C. engine in response to an exhaust gas sensor by constant frequency operation of an electromagnetic valve 34 in an additional air or fuel supply passage 32, the frequency is chosen so that it is higher than that of a piston when the engine is running within a cruising range of speeds, preferably it is also higher than the piston frequency at maximum speed. The pulses are produced by combining an integrated high/low signal representative of engine exhaust with a sawtooth waveform Fig. 2 (not shown). The object is to prevent any one cylinder always receiving a mixture which is too rich or too lean.
GB845776A 1975-03-28 1976-03-03 Air/fuel ratio control system in internal combustion engine Expired GB1512464A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP3768075A JPS51113032A (en) 1975-03-28 1975-03-28 The fuel control apparatus for an internal combustion engine
JP3767975A JPS51113031A (en) 1975-03-28 1975-03-28 The fuel control apparatus for an internal combsution engine

Publications (1)

Publication Number Publication Date
GB1512464A true GB1512464A (en) 1978-06-01

Family

ID=26376813

Family Applications (1)

Application Number Title Priority Date Filing Date
GB845776A Expired GB1512464A (en) 1975-03-28 1976-03-03 Air/fuel ratio control system in internal combustion engine

Country Status (3)

Country Link
CA (1) CA1075346A (en)
DE (1) DE2612120A1 (en)
GB (1) GB1512464A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54158527A (en) * 1978-06-02 1979-12-14 Hitachi Ltd Electronic type fuel control device for internal combustion engine
FR2482201A1 (en) * 1980-05-08 1981-11-13 Sibe IMPROVEMENTS ON CARBURETORS COMPRISING A MAIN CIRCUIT AND AN AUXILIARY CIRCUIT
JPS57137641A (en) * 1980-12-26 1982-08-25 Fuji Heavy Ind Ltd Air fuel ratio controller
JP3772366B2 (en) * 1995-10-23 2006-05-10 株式会社デンソー Engine fuel supply control system and air bleed control device thereof

Also Published As

Publication number Publication date
DE2612120A1 (en) 1976-10-14
CA1075346A (en) 1980-04-08

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Legal Events

Date Code Title Description
PS Patent sealed
746 Register noted 'licences of right' (sect. 46/1977)
PCNP Patent ceased through non-payment of renewal fee