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SE8200867L - METHOD AND METHOD FOR REGULATING AIR FUEL CONDITION IN A FLAMMABLE MIXTURE FEED TO A COMBUSTION APPLIANCE - Google Patents

METHOD AND METHOD FOR REGULATING AIR FUEL CONDITION IN A FLAMMABLE MIXTURE FEED TO A COMBUSTION APPLIANCE

Info

Publication number
SE8200867L
SE8200867L SE8200867A SE8200867A SE8200867L SE 8200867 L SE8200867 L SE 8200867L SE 8200867 A SE8200867 A SE 8200867A SE 8200867 A SE8200867 A SE 8200867A SE 8200867 L SE8200867 L SE 8200867L
Authority
SE
Sweden
Prior art keywords
fuel ratio
air
stoichiometric
sensor
adjusting element
Prior art date
Application number
SE8200867A
Other languages
Swedish (sv)
Inventor
K R Burns
J J Early
Original Assignee
Engelhard Corp
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 Engelhard Corp filed Critical Engelhard Corp
Publication of SE8200867L publication Critical patent/SE8200867L/en

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
    • F02D41/24—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
    • F02D41/2458—Learning of the air-fuel ratio control with an additional dither signal
    • 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
    • F02D41/1473—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the regulation method
    • F02D41/1475—Regulating the air fuel ratio at a value other than stoichiometry

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)
  • Exhaust Gas After Treatment (AREA)

Abstract

A method for controlling the air- to-fuel ratio of the mixture fed to an engine or other combustion device has the air-to-fuel ratio periodically altered towards stoichiometric into the response range of a conventional exhaust gas sensor. The output of the sensor at stoichiometric establishes a reference point setting of the air-to- fuel ratio proportioning device (e.g., carburetor) whose adjusting element is then moved a selected distance away from its setting point to provide a selected value of air fuel ratio which may be outside the normal response range of the sensor, either rich or lean of stoichiometric. The apparatus described includes a sensor 181 which generates an output signal which is compared against a reference signal by a comparator 28. When the output signal exceeds (or falls below) the reference signal, a timer B allows the proportioning device 42 adjusting element to be moved in the desired direction for a stated interval of time. A separate timer A operates the adjusting element towards stoichiometric at selected intervals to periodically establish the reference point setting. <IMAGE>
SE8200867A 1981-02-13 1982-02-12 METHOD AND METHOD FOR REGULATING AIR FUEL CONDITION IN A FLAMMABLE MIXTURE FEED TO A COMBUSTION APPLIANCE SE8200867L (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US23507181A 1981-02-13 1981-02-13

Publications (1)

Publication Number Publication Date
SE8200867L true SE8200867L (en) 1982-08-14

Family

ID=22883985

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8200867A SE8200867L (en) 1981-02-13 1982-02-12 METHOD AND METHOD FOR REGULATING AIR FUEL CONDITION IN A FLAMMABLE MIXTURE FEED TO A COMBUSTION APPLIANCE

Country Status (6)

Country Link
JP (1) JPS57151042A (en)
BR (1) BR8200773A (en)
CA (1) CA1183238A (en)
DE (1) DE3204969A1 (en)
GB (1) GB2093228A (en)
SE (1) SE8200867L (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4502444A (en) * 1983-07-19 1985-03-05 Engelhard Corporation Air-fuel ratio controller
DE3920661A1 (en) * 1989-06-23 1991-01-10 Comuna Metall Vorrichtungs Und Setting optimum air-fuel ratio for engine with catalytic exhaust unit - using measuring probe in exhaust line having voltage curve with stoichiometric ratio of combustion air-fuel of lambda at unity
US6260547B1 (en) * 2000-02-01 2001-07-17 Michael Spencer-Smith Apparatus and method for improving the performance of a motor vehicle internal combustion engine
US6837233B1 (en) 2002-11-04 2005-01-04 Michael Spencer-Smith System for enhancing performance of an internal combustion engine
GB201617349D0 (en) * 2016-10-13 2016-11-30 Johnson Matthey Public Limited Company Oxidation catalyst for hydrocarbons produced by an internal combustion engine

Also Published As

Publication number Publication date
CA1183238A (en) 1985-02-26
DE3204969A1 (en) 1982-08-19
GB2093228A (en) 1982-08-25
JPS57151042A (en) 1982-09-18
BR8200773A (en) 1982-12-21

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