SE9402651L - Method for quasi-feedback lean-burn control with narrow-band lambda sensor - Google Patents

Method for quasi-feedback lean-burn control with narrow-band lambda sensor

Info

Publication number
SE9402651L
SE9402651L SE9402651A SE9402651A SE9402651L SE 9402651 L SE9402651 L SE 9402651L SE 9402651 A SE9402651 A SE 9402651A SE 9402651 A SE9402651 A SE 9402651A SE 9402651 L SE9402651 L SE 9402651L
Authority
SE
Sweden
Prior art keywords
fvirt
fuel
lean
lambda
lambda sensor
Prior art date
Application number
SE9402651A
Other languages
Swedish (sv)
Other versions
SE9402651D0 (en
Inventor
Hans Johansson
Original Assignee
Mecel Ab
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 Mecel Ab filed Critical Mecel Ab
Priority to SE9402651A priority Critical patent/SE9402651L/en
Publication of SE9402651D0 publication Critical patent/SE9402651D0/en
Priority to PCT/SE1995/000913 priority patent/WO1996005420A1/en
Publication of SE9402651L publication Critical patent/SE9402651L/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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition

Abstract

The invention relates to a method for regulation of a combustion engine having a narrow banded lambda sensor for stoichiometric mixture ratios of air-fuel ( lambda = 1,0) arranged in the exhaust system, where the combustion in the combustion engine during its major part of operation is regulated towards lean mixture ratios of air-fuel exceeding lambda = 1,1, and preferably lambda = 1,2-1,6 or leaner. By forcing the engine during short duration to stoichiometric mixture ratios at several load cases could a base value for the necessary amount of fuel Fgr be determined for maintaining stoichiometric operation. The necessary amount of fuel for lean operation could thereafter be determined by use of a correction factor Fkorr, where Fvirt = Fgr.Fkorr. During continued operation at the predetermined lean mixture ratio is Fvirt used for regulating the amount of fuel supplied, at the load cases where Fvirt have been established, or by an interpolated value of Fvirt in-between the load cases where Fvirt have managed to be established. By the inventive method a quasi-feedback regulation could be obtained for lean burn with an inexpensive and reliable lambda sensor for a richer stoichiometric mixture ratio.
SE9402651A 1994-08-08 1994-08-08 Method for quasi-feedback lean-burn control with narrow-band lambda sensor SE9402651L (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SE9402651A SE9402651L (en) 1994-08-08 1994-08-08 Method for quasi-feedback lean-burn control with narrow-band lambda sensor
PCT/SE1995/000913 WO1996005420A1 (en) 1994-08-08 1995-08-08 Method for quasi-feedback lean burn control using a narrow-banded lambda sensor for stoichiometric mixtures

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9402651A SE9402651L (en) 1994-08-08 1994-08-08 Method for quasi-feedback lean-burn control with narrow-band lambda sensor

Publications (2)

Publication Number Publication Date
SE9402651D0 SE9402651D0 (en) 1994-08-08
SE9402651L true SE9402651L (en) 1996-02-09

Family

ID=20394865

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9402651A SE9402651L (en) 1994-08-08 1994-08-08 Method for quasi-feedback lean-burn control with narrow-band lambda sensor

Country Status (2)

Country Link
SE (1) SE9402651L (en)
WO (1) WO1996005420A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006052985B4 (en) * 2006-11-10 2015-08-06 Volkswagen Ag Method for operating an internal combustion engine with bivalent fuel supply
CN106285985A (en) * 2016-09-30 2017-01-04 广州汽车集团股份有限公司 Petrol engine excess air coefficient method for controlling combustion and combustion control system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4526001A (en) * 1981-02-13 1985-07-02 Engelhard Corporation Method and means for controlling air-to-fuel ratio
US4562818A (en) * 1983-07-05 1986-01-07 Nippon Soken, Inc. Method and apparatus for controlling the air-fuel ratio in an internal combustion engine
JPS60153438A (en) * 1984-01-20 1985-08-12 Hitachi Ltd Air-fuel ratio controlling method of engine

Also Published As

Publication number Publication date
SE9402651D0 (en) 1994-08-08
WO1996005420A1 (en) 1996-02-22

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