EP0877159A3 - Process for checking the operability of the heater of a lambda sensor in the exhaust pipe of an internal combustion engine - Google Patents

Process for checking the operability of the heater of a lambda sensor in the exhaust pipe of an internal combustion engine Download PDF

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Publication number
EP0877159A3
EP0877159A3 EP98106013A EP98106013A EP0877159A3 EP 0877159 A3 EP0877159 A3 EP 0877159A3 EP 98106013 A EP98106013 A EP 98106013A EP 98106013 A EP98106013 A EP 98106013A EP 0877159 A3 EP0877159 A3 EP 0877159A3
Authority
EP
European Patent Office
Prior art keywords
heater
checking
combustion engine
internal combustion
exhaust pipe
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.)
Granted
Application number
EP98106013A
Other languages
German (de)
French (fr)
Other versions
EP0877159A2 (en
EP0877159B1 (en
Inventor
Thomas Seidenfuss
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.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke AG
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 Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Publication of EP0877159A2 publication Critical patent/EP0877159A2/en
Publication of EP0877159A3 publication Critical patent/EP0877159A3/en
Application granted granted Critical
Publication of EP0877159B1 publication Critical patent/EP0877159B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F02D41/1494—Control of sensor heater
    • 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)
  • Measurement Of Resistance Or Impedance (AREA)
  • Measuring Oxygen Concentration In Cells (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)

Abstract

Bei einem Verfahren zur Überprüfung der Funktionsfähigkeit der elektrischen Heizung einer Lambda-Sonde im Abgasrohr einer Brennkraftmaschine, bei dem der elektrische Widerstand der Heizung gemessen wird, wird der elektrische Widerstand der Heizung gemessen, wenn der Heizstrom ausgeschaltet ist. Dabei wird die Heizung zur Messung ihres elektrischen Widerstands mit einem Meßstrom beaufschlagt, der kleiner als der Heizstrom ist.In a procedure for checking the functionality of the electrical Heating a lambda sensor in the exhaust pipe of an internal combustion engine, at the electrical resistance of the heater is measured, the electrical Heating resistance measured when heating current turned off is. The heater is used to measure its electrical resistance acted upon with a measuring current which is smaller than the heating current.

Vorzugsweise wird der elektrische Widerstand der Heizung zur Beaufschlagung mit (Heiz- oder Meß-) Strom gegen positive Spannung geschaltet.

Figure 00000001
The electrical resistance of the heater is preferably switched against positive voltage for the application of (heating or measuring) current.
Figure 00000001
EP98106013A 1997-05-07 1998-04-02 Process for checking the operability of the heater of a lambda sensor in the exhaust pipe of an internal combustion engine Expired - Lifetime EP0877159B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19719390 1997-05-07
DE19719390A DE19719390A1 (en) 1997-05-07 1997-05-07 Method for checking the functionality of the electrical heating of a lambda probe in the exhaust pipe of an internal combustion engine

Publications (3)

Publication Number Publication Date
EP0877159A2 EP0877159A2 (en) 1998-11-11
EP0877159A3 true EP0877159A3 (en) 1999-12-29
EP0877159B1 EP0877159B1 (en) 2003-06-25

Family

ID=7828955

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98106013A Expired - Lifetime EP0877159B1 (en) 1997-05-07 1998-04-02 Process for checking the operability of the heater of a lambda sensor in the exhaust pipe of an internal combustion engine

Country Status (5)

Country Link
US (1) US5929328A (en)
EP (1) EP0877159B1 (en)
JP (1) JPH1183790A (en)
DE (2) DE19719390A1 (en)
ES (1) ES2202676T3 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19956823C2 (en) * 1999-11-25 2002-11-28 Siemens Ag Control circuit and control method for a gas sensor
US7481915B2 (en) * 2001-02-08 2009-01-27 Ford Global Technologies, Llc Exhaust gas temperature measurement utilizing an exhaust gas sensor
US6586711B2 (en) * 2001-07-27 2003-07-01 General Motors Corporation Current control method for an oxygen sensor heater
DE102006014681A1 (en) * 2006-03-28 2007-10-04 Robert Bosch Gmbh Gas sensor for internal combustion engine, has pump supply line and heating pipeline that are electrically connected with each other and commonly ground, where Nernst voltage is measured between measuring line and reference pump supply line
CN102854393B (en) * 2012-09-08 2014-12-24 无锡隆盛科技股份有限公司 Heating detecting circuit and heating detecting method for nitrogen and oxygen sensor
DE102015222554A1 (en) 2015-11-16 2017-05-18 Inficon Gmbh Leak detection with oxygen
DE102016202854A1 (en) * 2016-02-24 2017-08-24 Volkswagen Aktiengesellschaft Method and device for operating a lambda probe in an exhaust passage of an internal combustion engine
US10563605B2 (en) * 2018-03-13 2020-02-18 Ford Global Technologies, Llc Systems and methods for reducing vehicle emissions
US11092101B2 (en) 2018-08-22 2021-08-17 Rosemount Aerospace Inc. Heater in-circuit capacitive measurement
US11078859B2 (en) * 2019-10-11 2021-08-03 Fca Us Llc Oxygen sensor out of specification heater rationality monitor using cold start cycle

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991009219A1 (en) * 1989-12-20 1991-06-27 Robert Bosch Gmbh Process and device for monitoring the operation of a probe heating installation
DE4132008A1 (en) * 1991-09-26 1993-04-01 Bosch Gmbh Robert METHOD AND DEVICE FOR CHECKING THE FUNCTIONALITY OF AN ELECTRICAL HEATING IN MOTOR VEHICLES
US5392643A (en) * 1993-11-22 1995-02-28 Chrysler Corporation Oxygen heater sensor diagnostic routine

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07122627B2 (en) * 1987-12-16 1995-12-25 日本電装株式会社 Heater controller for oxygen concentration sensor
US4993392A (en) * 1989-04-24 1991-02-19 Toyota Jidosha Kabushiki Kaisha Apparatus for controlling heater for heating oxygen sensor
US5245979A (en) * 1992-10-28 1993-09-21 Ford Motor Company Oxygen sensor system with a dynamic heater malfunction detector
US5454259A (en) * 1993-08-02 1995-10-03 Toyota Jidosha Kabushiki Kaisha Failure detecting apparatus in temperature controller of air-fuel ratio sensor
DE4344961B4 (en) * 1993-12-30 2004-05-06 Robert Bosch Gmbh Evaluation device for the signal of an oxygen probe
JP3711582B2 (en) * 1995-03-31 2005-11-02 株式会社デンソー Oxygen concentration detector

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991009219A1 (en) * 1989-12-20 1991-06-27 Robert Bosch Gmbh Process and device for monitoring the operation of a probe heating installation
DE4132008A1 (en) * 1991-09-26 1993-04-01 Bosch Gmbh Robert METHOD AND DEVICE FOR CHECKING THE FUNCTIONALITY OF AN ELECTRICAL HEATING IN MOTOR VEHICLES
US5392643A (en) * 1993-11-22 1995-02-28 Chrysler Corporation Oxygen heater sensor diagnostic routine

Also Published As

Publication number Publication date
EP0877159A2 (en) 1998-11-11
US5929328A (en) 1999-07-27
EP0877159B1 (en) 2003-06-25
JPH1183790A (en) 1999-03-26
ES2202676T3 (en) 2004-04-01
DE19719390A1 (en) 1998-11-12
DE59808786D1 (en) 2003-07-31

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