EP0691465B1 - Method to detect cross-connected lambda sensors - Google Patents

Method to detect cross-connected lambda sensors Download PDF

Info

Publication number
EP0691465B1
EP0691465B1 EP95107229A EP95107229A EP0691465B1 EP 0691465 B1 EP0691465 B1 EP 0691465B1 EP 95107229 A EP95107229 A EP 95107229A EP 95107229 A EP95107229 A EP 95107229A EP 0691465 B1 EP0691465 B1 EP 0691465B1
Authority
EP
European Patent Office
Prior art keywords
lambda
cylinders
connection
internal combustion
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 - Lifetime
Application number
EP95107229A
Other languages
German (de)
French (fr)
Other versions
EP0691465A3 (en
EP0691465A2 (en
Inventor
Alois Bauer
Dietmar Hundertmark
Günther Ranzinger
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 EP0691465A2 publication Critical patent/EP0691465A2/en
Publication of EP0691465A3 publication Critical patent/EP0691465A3/xx
Application granted granted Critical
Publication of EP0691465B1 publication Critical patent/EP0691465B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • F02D41/1444—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases
    • F02D41/1454—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being an oxygen content or concentration or the air-fuel ratio
    • 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
    • F02D41/1439—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the position of the sensor
    • F02D41/1441—Plural sensors
    • F02D41/1443—Plural sensors with one sensor per cylinder or group of cylinders
    • 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
    • F02D41/1474—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the regulation method by detecting the commutation time of the sensor
    • 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
    • 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
    • F02D41/2438—Active learning methods

Definitions

  • the invention relates to a method for detecting reverse-connected lambda probes in an internal combustion engine with two rows of cylinders, each of which is separately assigned an exhaust gas catalytic converter with a lambda probe and a lambda control unit connected to it, and whose injection valves can be switched off at least in rows.
  • German patent application P 43 34 557.3 (EPA-A-647 775, state of the art according to Art. 54 (3), EPC) is a device for idle control of a motor vehicle internal combustion engine with two rows of cylinders, each with an exhaust gas catalyst Lambda probe is known.
  • EPC exhaust gas catalyst Lambda probe
  • the lambda probes can no longer be interchanged or connected, they would have to be mechanically coded, which can be done, for example, by different plug connections or by different cable lengths for the left and right lambda probes. However, this would violate the principle of common parts for the lambda probes, which would result in an increase in costs.
  • This object is achieved in that the injectors of one of the two rows of cylinders are switched off for a time corresponding to at least the reaction or changeover time of the lambda probes, in that the lambda probe signal of the lambda probe assigned to the deactivated row of cylinders also ends at the end of the shutdown time of the injectors a predetermined threshold value is compared and that a reverse connection of the lambda probes is detected when the lambda probe signal exceeds or falls below the threshold value.
  • the threshold value will be exceeded if the lambda probe emits a small signal when the mixture is lean and a large signal when the mixture is rich. Analogous the threshold value will be undershot if the lambda probe emits a large signal when the mixture is lean and a small signal when the mixture is rich.
  • the lambda controls are blocked and an error display device is activated.
  • an external device that can be connected to a diagnostic connection of the internal combustion engine is used to detect a connection of the lambda probes that is reversed.
  • the method according to the invention can advantageously also be adopted in the internal combustion engine control devices as a so-called on-board diagnostic function. This would immediately detect an unauthorized swapping of the lambda probes even between visits to the workshop.
  • FIG. 1 shows the lambda probe signals U 1 and U 5 of the lambda probes 1 and 5, which are respectively properly assigned to the left and right cylinder banks 2 and 4, on the left side.
  • the two block diagrams on the right side of FIG. 1 show that the lambda probe 1 provided for the left cylinder bank correctly points to the left internal combustion engine control unit 3 provided for the left cylinder bank 2 and the lambda probe 5 provided for the right cylinder bank 4 the engine control unit 6 provided for the right cylinder bank 4 is connected.
  • the two engine control units 3 and 6 are designed in the form of digital engine control units DME.
  • the injection valves 7 of the left cylinder bank 2 are switched off, while the injection valves 8 of the right cylinder bank 4 are fired.
  • the two left-hand diagrams of FIG. 1 show that the lambda probe signal U 1 shown at the top left in FIG. 1 of the lambda probe 1 assigned to the deactivated cylinder bank 2 does not exceed the predetermined threshold value S at the end of the deactivation time of the injection valves 7. It correctly indicates that the left cylinder bank 2 is operated lean. There is therefore a correct connection of the lambda probes 1 and 5.
  • the lambda probe signal U 1 of the lambda probe 1 actually assigned to the left cylinder bank 2 but incorrectly connected to the right cylinder bank 4 is shown at the top left.
  • the lambda probe signal U 1 of the lambda probe 1 shows a rich mixture when the left cylinder bank 2 is switched off and therefore operated lean
  • the lambda probe signal U 5 shown in the figure at the bottom left shows that of the right cylinder bank 4 lambda probe 5 assigned but connected to the left cylinder bank 2 indicates a lean mixture.
  • the reverse ie. H. the cross-swapped connection of two so-called monitor probes are determined, which are used to monitor the respective catalyst conversion function.

Description

Die Erfindung betrifft ein Verfahren zur Erkennung von seitenverkehrt angeschlossenen Lambda-Sonden bei einer Brennkraftmaschine mit zwei Zylinderreihen, denen jeweils separat ein Abgaskatalysator mit Lambda-Sonde und daran angeschlossener Lambda-Regeleinheit zugeordnet ist und deren Einspritzventile zumindest zylinderreihenweise abschaltbar sind.The invention relates to a method for detecting reverse-connected lambda probes in an internal combustion engine with two rows of cylinders, each of which is separately assigned an exhaust gas catalytic converter with a lambda probe and a lambda control unit connected to it, and whose injection valves can be switched off at least in rows.

Aus der noch nicht veröffentlichten deutschen Patentanmeldung P 43 34 557.3 (EPA-A-647 775, Stand der Technik gemaß Art. 54(3), EPÜ) ist eine Vorrichtung zur Leerlaufsteuerung einer Kraftfahrzeug-Brennkraftmaschine mit zwei Zylinderreihen, denen jeweils ein Abgaskatalysator mit Lambda-Sonde zugeordnet ist, bekannt. Bei dieser bekannten Vorrichtung werden im Leerlaufbetrieb der Brennkraftmaschine wechselweise die Einspritzventile einer der beiden Zylinderreihen abgeschaltet. Die zylinderreihenweise Abschaltung der Einspritzventile einer Brennkraftmaschine ist hieraus also bekannt.From the as yet unpublished German patent application P 43 34 557.3 (EPA-A-647 775, state of the art according to Art. 54 (3), EPC) is a device for idle control of a motor vehicle internal combustion engine with two rows of cylinders, each with an exhaust gas catalyst Lambda probe is known. In this known device, the injection valves of one of the two rows of cylinders are alternately switched off when the internal combustion engine is idling. The shutdown of the injection valves of an internal combustion engine in rows is therefore known from this.

Bei Brennkraftmaschinensteuerungen mit zwei getrennten Lambda-Regelkreisen besteht die Gefahr, daß die Lambda-Sonden der für die beiden Zylinderreihen jeweils separat vorgesehenen Abgaskatalysatoren elektrisch seitenverkehrt angeschlossen werden. Dies führt zum Ausmagern der einen und zum Anfetten der anderen Brennkraftmaschinen-Zylinderreihe bis zum maximalen Regelhub der Lambda-Regelung, was aufgrund der Brennkraftmaschinen-Laufunruhe deutliche Komforteinbußen zur Folge hat.In internal combustion engine controls with two separate lambda control loops, there is the risk that the lambda probes are separate for the two cylinder rows provided catalytic converters are connected electrically reversed. This leads to the emaciation of one and the enrichment of the other series of internal combustion engines up to the maximum regulating stroke of the lambda control, which results in significant losses in comfort due to the uneven running of the internal combustion engine.

Damit die Lambda-Sonden nicht mehr vertauscht montiert bzw. angeschlossen werden können, müßten sie mechanisch codiert werden, was beispielsweise durch unterschiedliche Steckverbindungen oder durch unterschiedliche Kabellängen für die linke und die rechte Lambda-Sonde erfolgen kann. Damit wäre jedoch das Gleichteileprinzip für die Lambda-Sonden verletzt, was eine Kostensteigerung zur Folge hätte.So that the lambda probes can no longer be interchanged or connected, they would have to be mechanically coded, which can be done, for example, by different plug connections or by different cable lengths for the left and right lambda probes. However, this would violate the principle of common parts for the lambda probes, which would result in an increase in costs.

Es ist daher Aufgabe der Erfindung, ein einfaches und kostengünstiges Verfahren zur Erkennung von seitenverkehrt angeschlossenen Lambda-Sonden bei einer Brennkraftmaschine mit zwei Zylinderreihen, denen jeweils separate Abgaskatalysatoren mit Lambda-Sonde und daran angeschlossener Lambda-Regeleinheit zugeordnet sind, zu schaffen.It is therefore an object of the invention to provide a simple and cost-effective method for detecting reverse-connected lambda probes in an internal combustion engine with two rows of cylinders, each of which is assigned a separate exhaust gas catalytic converter with a lambda probe and a lambda control unit connected to it.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die Einspritzventile einer der beiden Zylinderreihen eine mindestens der Reaktions- oder Umschaltzeit der Lambda-Sonden entsprechende Zeit abgeschaltet werden, daß das Lambda-Sondensignal der der abgeschalteten Zylinderreihe zugeordneten Lambda-Sonde am Ende der Abschaltzeit der Einspritzventile mit einem vorgegebenen Schwellwert verglichen wird und daß ein seitenverkehrter Anschluß der Lambda-Sonden erkannt wird, wenn das Lambda-Sondensignal den Schwellwert über- bzw. unterschreitet. Eine Überschreitung des Schwellwertes wird dann gegeben sein, wenn die Lambda-Sonde bei magerem Gemisch ein kleines Signal und bei fettem Gemisch ein großes Signal abgibt. Analog dazu wird eine Unterschreitung des Schwellwerts gegeben sein, wenn die Lambda-Sonde bei magerem Gemisch ein großes Signal sowie bei fettem Gemisch ein kleines Signal abgibt.This object is achieved in that the injectors of one of the two rows of cylinders are switched off for a time corresponding to at least the reaction or changeover time of the lambda probes, in that the lambda probe signal of the lambda probe assigned to the deactivated row of cylinders also ends at the end of the shutdown time of the injectors a predetermined threshold value is compared and that a reverse connection of the lambda probes is detected when the lambda probe signal exceeds or falls below the threshold value. The threshold value will be exceeded if the lambda probe emits a small signal when the mixture is lean and a large signal when the mixture is rich. Analogous the threshold value will be undershot if the lambda probe emits a large signal when the mixture is lean and a small signal when the mixture is rich.

Bei einer vorteilhaften Ausgestaltung des erfindungsgemäßen Verfahrens bei erkanntem seitenverkehrten Anschluß der Lambda-Sonden werden die Lambda-Regelungen gesperrt und eine Fehleranzeigeeinrichtung aktiviert.In an advantageous embodiment of the method according to the invention when the reverse connection of the lambda probes is detected, the lambda controls are blocked and an error display device is activated.

Bei einer weiteren Ausgestaltung des erfindungsgemäßen Verfahrens wird zur Erkennung eines seitenverkehrten Anschlusses der Lambda-Sonden eine an einen Diagnoseanschluß der Brennkraftmaschine anschließbare externe einrichtung verwendet.In a further embodiment of the method according to the invention, an external device that can be connected to a diagnostic connection of the internal combustion engine is used to detect a connection of the lambda probes that is reversed.

Vorteilhafterweise kann das erfindungsgemäße Verfahren auch in die Brennkraftmaschinensteuereinrichtungen als sog. On-Board-Diagnosefunktion übernommen werden. Damit würde eine unbefugte Vertauschung der Lambda-Sonden auch zwischen den Werkstattaufenthalten sofort erkannt werden.The method according to the invention can advantageously also be adopted in the internal combustion engine control devices as a so-called on-board diagnostic function. This would immediately detect an unauthorized swapping of the lambda probes even between visits to the workshop.

Im folgenden wird die Erfindung noch anhand eines Ausführungsbeispiels näher erläutert. Es zeigen

Fig. 1
die Lambda-Sondensignale der der linken und der rechten Zylinderbank ordnungsgemäß zugeordneten Lambda-Sonden bei Abschaltung der linken Zylinderbank und
Fig. 2
die Lambda-Sondensignale der beiden für die linke und rechte Zylinderbank vorgesehenen Lambda-Sonden für den Fall, daß die Lambda-Sonden seitenverkehrt an die für die linke und rechte Zylinderbank jeweils separat vorgesehenen Brennkraftmaschinensteuereinrichtungen angeschlossen sind.
The invention is explained in more detail below with the aid of an exemplary embodiment. Show it
Fig. 1
the lambda probe signals of the lambda probes properly assigned to the left and right cylinder banks when the left cylinder bank and
Fig. 2
the lambda probe signals of the two lambda probes provided for the left and right cylinder banks in the event that the lambda probes are reversed on the sides of the lambda probes provided separately for the left and right cylinder banks Internal combustion engine control devices are connected.

In der Fig. 1 sind auf der linken Seite die Lambda-Sondensignale U1 und U5 der der linken und rechten Zylinderbank 2 und 4 jeweils ordnungsgemäß zugeordneten Lambda-Sonden 1 und 5 dargestellt. Die beiden Blockschaltbilder auf der rechten Seite der Fig. 1 zeigen, daß die für die linke Zylinderbank vorgesehene Lambda-Sonde 1 richtigerweise an die für die linke Zylinderbank 2 vorgesehene linke Brennkraftmaschinensteuereinheit 3 und die für die rechte Zylinderbank 4 vorgesehene Lambda-Sonde 5 richtigerweise an die für die rechte Zylinderbank 4 vorgesehene Brennkraftmaschinen-Steuereinheit 6 angeschlossen ist. Die beiden Brennkraftmaschinensteuereinheiten 3 und 6 sind in Form von digitalen Motorsteuereinheiten DME ausgeführt. Bei dem in der Fig. 1 dargestellten Blockschaltbild sind die Einspritzventile 7 der linken Zylinderbank 2 abgeschaltet, während die Einspritzventile 8 der rechten Zylinderbank 4 befeuert sind.1 shows the lambda probe signals U 1 and U 5 of the lambda probes 1 and 5, which are respectively properly assigned to the left and right cylinder banks 2 and 4, on the left side. The two block diagrams on the right side of FIG. 1 show that the lambda probe 1 provided for the left cylinder bank correctly points to the left internal combustion engine control unit 3 provided for the left cylinder bank 2 and the lambda probe 5 provided for the right cylinder bank 4 the engine control unit 6 provided for the right cylinder bank 4 is connected. The two engine control units 3 and 6 are designed in the form of digital engine control units DME. In the block diagram shown in FIG. 1, the injection valves 7 of the left cylinder bank 2 are switched off, while the injection valves 8 of the right cylinder bank 4 are fired.

Die beiden linken Diagramme der Fig. 1 zeigen, daß das in der Fig. 1 links oben dargestellte Lambda-Sondensignal U1 der der abgeschalteten Zylinderbank 2 zugeordneten Lambda-Sonde 1 am Ende der Abschaltzeit der Einspritzventile 7 den vorgegebenen Schwellwert S nicht überschreitet. Sie zeigt damit richtigerweise an, daß die linke Zylinderbank 2 mager betrieben wird. Es liegt somit ein richtiger Anschluß der Lambda-Sonden 1 und 5 vor.The two left-hand diagrams of FIG. 1 show that the lambda probe signal U 1 shown at the top left in FIG. 1 of the lambda probe 1 assigned to the deactivated cylinder bank 2 does not exceed the predetermined threshold value S at the end of the deactivation time of the injection valves 7. It correctly indicates that the left cylinder bank 2 is operated lean. There is therefore a correct connection of the lambda probes 1 and 5.

Bei dem in der Fig. 2 auf der rechten Seite dargestellten Blockschaltbild sind die einzelnen Elemente mit den in der Fig. 1 bereits verwendeten Bezugszeichen versehen. Wie dem Blockschaltbild der Fig. 2 zu entnehmen ist, sind die beiden Lambda-Sonden 1 und 5 seitenverkehrt, d. h. über Kreuz vertauscht an die beiden Zylinderbänke 2 und 4 angeschlossen. Dies wird auch bei Betrachtung der beiden auf der linken Seite der Fig. 2 dargestellten Diagramme deutlich.In the block diagram shown on the right in FIG. 2, the individual elements are provided with the reference symbols already used in FIG. 1. As can be seen from the block diagram in FIG. 2, the two lambda probes 1 and 5 are reversed, that is to say they are exchanged crosswise to the two cylinder banks 2 and 4 connected. This is also clear when looking at the two diagrams shown on the left side of FIG. 2.

In der Fig. 2 links oben ist das Lambda-Sondensignal U1 der eigentlich der linken Zylinderbank 2 zugeordneten, aber fälschlicherweise an die rechte Zylinderbank 4 angeschlossenen Lambda-Sonde 1 dargestellt. Wie dem Diagramm zu entnehmen ist, zeigt das Lambda-Sondensignal U1 der Lambda-Sonde 1 bei abgeschalteter und daher mager betriebener linker Zylinderbank 2 ein fettes Gemisch an, während das in der Figur links unten dargestellte Lambda-Sondensignal U5 der der rechten Zylinderbank 4 zugeordneten, aber an die linke Zylinderbank 2 angeschlossenen Lambda-Sonde 5 ein mageres Gemisch anzeigt. Die Fig. 2 zeigt, daß das Lambda-Sondensignal U1 der der abgeschalteten Zylinderbank 2 zugeordneten, aber fälschlicherweise an die befeuerte rechte Zylinderbank 4 angeschlossenen Lambda-Sonde 1 am Ende der Abschaltzeit der Einspritzventile 7 den Schwellwert S deutlich überschreitet, wodurch der seitenverkehrte Anschluß der Lambda-Sonden 1 und 5 erkannt wird.2, the lambda probe signal U 1 of the lambda probe 1 actually assigned to the left cylinder bank 2 but incorrectly connected to the right cylinder bank 4 is shown at the top left. As can be seen from the diagram, the lambda probe signal U 1 of the lambda probe 1 shows a rich mixture when the left cylinder bank 2 is switched off and therefore operated lean, while the lambda probe signal U 5 shown in the figure at the bottom left shows that of the right cylinder bank 4 lambda probe 5 assigned but connected to the left cylinder bank 2 indicates a lean mixture. 2 shows that the lambda probe signal U 1 of the lambda probe 1 assigned to the deactivated cylinder bank 2, but incorrectly connected to the fired right cylinder bank 4, clearly exceeds the threshold value S at the end of the deactivation time of the injection valves 7, as a result of which the connection reversed Lambda probes 1 and 5 are recognized.

Durch dieses erfindungsgemäße Verfahren kann auch der seitenverkehrte, d. h. der über Kreuz vertauschte Anschluß zweier sogenannter Monitorsonden festgestellt werden, die zur Überwachung der jeweiligen Katalysatorkonvertierungsfunktion dienen.With this method according to the invention, the reverse, ie. H. the cross-swapped connection of two so-called monitor probes are determined, which are used to monitor the respective catalyst conversion function.

Claims (4)

  1. A method of detecting when lambda sensors are connected to the wrong side of an internal combustion engine having two rows of cylinders each separately associated with an exhaust-gas catalyst comprising a lambda sensor connected to a lambda control unit, in which the injection valves can be switched off at least in one row of cylinders at a time, wherein
    the injection valves (7) of one of the two rows (2, 4) of cylinders are switched off for a time at least equal to the reaction or change-over time of the lambda sensors (1, 5), at the end of the switching-off time of the injection valve (7), the signal (U1) from the lambda sensor (1) associated with the switched-off row (2) of cylinders is compared with a preset threshold value (S), and a connection of the lambda sensors (1, 5) to the wrong side is detected if the lambda sensor signal (U1) is above or below the threshold value (S).
  2. A method according to claim 1, characterised in that if a connection of the lambda sensors (1, 5) to the wrong side is detected, the lambda control systems are blocked and a fault indicator is activated.
  3. A method according to claim 1 or 2, characterised in that a connection of the lambda sensors (1, 5) to the wrong side is detected by using an external test device which can be connected to a diagnostic connection of the internal combustion engine.
  4. Use of the method according to the invention in claims 1 and 2 for on-board diagnosis in engine control devices.
EP95107229A 1994-07-04 1995-05-12 Method to detect cross-connected lambda sensors Expired - Lifetime EP0691465B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4423344A DE4423344A1 (en) 1994-07-04 1994-07-04 Method for the detection of reversed connected lambda probes
DE4423344 1994-07-04

Publications (3)

Publication Number Publication Date
EP0691465A2 EP0691465A2 (en) 1996-01-10
EP0691465A3 EP0691465A3 (en) 1996-01-17
EP0691465B1 true EP0691465B1 (en) 1997-03-12

Family

ID=6522174

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95107229A Expired - Lifetime EP0691465B1 (en) 1994-07-04 1995-05-12 Method to detect cross-connected lambda sensors

Country Status (5)

Country Link
US (1) US5528932A (en)
EP (1) EP0691465B1 (en)
JP (1) JPH0842386A (en)
DE (2) DE4423344A1 (en)
ES (1) ES2100757T3 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10117244A1 (en) * 2001-04-06 2002-11-07 Audi Ag Procedure for detecting swapped connected O¶2¶ sensors
FR2859241A1 (en) 2003-08-25 2005-03-04 Volkswagen Ag Method of setting up an inversion diagnostic for number of lambda probes in internal combustion engine to determine correlations between banks of cylinders, mountings and lambda probes

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19706382C2 (en) 1997-02-19 2003-03-06 Daimler Chrysler Ag Procedure for testing for correctly connected lambda probes
DE19734670C1 (en) 1997-08-11 1999-05-27 Daimler Chrysler Ag Exchanging test for lambda sensors
DE10026213B4 (en) * 2000-05-26 2007-07-26 Volkswagen Ag Method for configuring a plurality of lambda probes of an internal combustion engine
US6735939B2 (en) * 2001-11-26 2004-05-18 Ford Global Technologies, Llc System and method for monitoring and exhaust gas sensor in an engine
DE10159947A1 (en) * 2001-12-06 2003-06-18 Bayerische Motoren Werke Ag Method and device for operating an internal combustion engine
DE10203728A1 (en) * 2002-01-30 2003-08-14 Bosch Gmbh Robert Electronic exchange protection of exhaust gas measuring probes in an exhaust gas aftertreatment internal combustion engine, in particular of a motor vehicle
DE102005035423B4 (en) * 2005-07-28 2010-12-02 Continental Automotive Gmbh Method and device for assigning a plurality of sensors of a sensor type to measurement objects of an internal combustion engine
US7367918B2 (en) * 2005-11-08 2008-05-06 Zf Friedrichshafen Ag Method for self-configuring automated mechanical transmission and electronic controller
JP4618220B2 (en) * 2006-09-05 2011-01-26 株式会社デンソー Gas sensor assembly state detection method and gas sensor assembly state detection apparatus
JP4640318B2 (en) * 2006-11-09 2011-03-02 株式会社デンソー Control device for internal combustion engine
JP2008261289A (en) * 2007-04-12 2008-10-30 Toyota Motor Corp Abnormality diagnostic device of air-fuel ratio sensor
US7693648B2 (en) 2007-11-27 2010-04-06 Caterpillar Inc. System and method for detecting misassembly of an exhaust aftertreatment system of a machine
DE102011001045A1 (en) 2011-03-03 2012-09-06 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Method for the diagnosis of exhaust gas probes and / or catalysts
US8959892B2 (en) * 2013-01-25 2015-02-24 Caterpillar Inc. Exhaust system having sensor placement detection
DE102014209316B4 (en) * 2014-05-16 2018-10-04 Volkswagen Aktiengesellschaft Method and control device for carrying out exhaust gas-relevant diagnoses

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4121548A (en) * 1976-08-08 1978-10-24 Nippon Soken, Inc. Deteriorated condition detecting apparatus for an oxygen sensor
JPS5334017A (en) * 1976-09-13 1978-03-30 Nissan Motor Co Ltd Control equipment of number of cylinder to be supplied fuel
DE2907934C2 (en) * 1979-03-01 1982-09-16 Dr.Ing.H.C. F. Porsche Ag, 7000 Stuttgart Multi-cylinder internal combustion engine, in particular for motor vehicles
JPS6123790Y2 (en) * 1979-02-23 1986-07-16
SU1315627A1 (en) * 1985-04-18 1987-06-07 Джезказганский Научно-Исследовательский И Проектный Институт Цветной Металлургии Method for operating of internal combustion engine
JPS6218657U (en) * 1985-07-17 1987-02-04
JPH0711435B2 (en) * 1985-07-23 1995-02-08 トヨタ自動車株式会社 Method for determining sensor abnormality of internal combustion engine
DE3740238A1 (en) * 1986-12-04 1988-06-23 Audi Ag EXHAUST SYSTEM FOR AN INTERNAL COMBUSTION ENGINE WITH TWO CYLINDER BENCHES
JPS648334A (en) * 1987-06-30 1989-01-12 Mazda Motor Air-fuel ratio controller of engine
JPH01217253A (en) * 1988-02-25 1989-08-30 Nissan Motor Co Ltd Trouble diagnosing apparatus for oxygen sensor
JP2668029B2 (en) * 1988-05-31 1997-10-27 三菱自動車工業株式会社 Oxygen sensor test equipment
DE3834711A1 (en) * 1988-10-12 1990-04-19 Bosch Gmbh Robert METHOD AND DEVICE FOR ERROR DETECTION AND / OR TREATMENT IN STEREO LAMB CONTROL
US4943238A (en) * 1988-12-14 1990-07-24 Interplex Electronics, Inc. Automotive electronic instructional and diagnostic training apparatus
JPH0454249A (en) * 1990-06-20 1992-02-21 Mitsubishi Electric Corp Air-fuel ratio control device for engine
JPH04116241A (en) * 1990-09-05 1992-04-16 Honda Motor Co Ltd Performance monitor of hc sensor in internal combustion engine
US5228335A (en) * 1991-02-25 1993-07-20 The United States Of America As Represented By The United States Environmental Protection Agency Method and apparatus for detection of catalyst failure on-board a motor vehicle using a dual oxygen sensor and an algorithm
JP2551255B2 (en) * 1991-03-14 1996-11-06 日本電装株式会社 Failure determination device for vehicle occupant protection system
DE4113316C2 (en) * 1991-04-24 2003-09-11 Bosch Gmbh Robert Connection circuit for a lambda probe and test method for such a circuit
JP2827719B2 (en) * 1992-07-16 1998-11-25 三菱自動車工業株式会社 O2 sensor failure determination method
DE4334557A1 (en) * 1993-10-11 1995-04-13 Bayerische Motoren Werke Ag Device for idle control of a motor vehicle internal combustion engine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10117244A1 (en) * 2001-04-06 2002-11-07 Audi Ag Procedure for detecting swapped connected O¶2¶ sensors
FR2859241A1 (en) 2003-08-25 2005-03-04 Volkswagen Ag Method of setting up an inversion diagnostic for number of lambda probes in internal combustion engine to determine correlations between banks of cylinders, mountings and lambda probes
DE10339325A1 (en) * 2003-08-25 2005-03-31 Volkswagen Ag Method and device for commutation diagnosis of lambda probes

Also Published As

Publication number Publication date
ES2100757T3 (en) 1997-06-16
DE4423344A1 (en) 1996-01-11
DE59500133D1 (en) 1997-04-17
US5528932A (en) 1996-06-25
JPH0842386A (en) 1996-02-13
EP0691465A3 (en) 1996-01-17
EP0691465A2 (en) 1996-01-10

Similar Documents

Publication Publication Date Title
EP0691465B1 (en) Method to detect cross-connected lambda sensors
DE19734670C1 (en) Exchanging test for lambda sensors
DE69816256T2 (en) Device for determining the deterioration of the exhaust gas detoxification system of an internal combustion engine
DE19729007A1 (en) Diagnosing functioning states of catalytic converter
EP2041415B1 (en) Method for increasing the resolution of output signals from at least one measuring sensor on an internal combustion engine and corresponding controller
DE4209155C2 (en) Exhaust system for an internal combustion engine
EP1222378B1 (en) Device and method for controlling a drive unit
DE19706382A1 (en) Procedure for testing for correctly connected lambda probes
DE10026213B4 (en) Method for configuring a plurality of lambda probes of an internal combustion engine
DE60105661T2 (en) Diagnostic system for monitoring the functionality of a catalyst using an arc length ratio
WO1991014861A1 (en) Process and device for monitoring the degree of poisoning of a catalytic converter in the exhaust system of an internal-combustion engine
DE19730970B4 (en) Control device for an internal combustion engine
DE4420425A1 (en) Electronic combined-system for motor vehicles with identical electric sub-distribution units
EP0754845B1 (en) Method of detection of a failure in the electronic or injection system of a combustion engine
EP1180586A2 (en) Multi-cylinder internal combustion engine with a catalyst heating device
WO2007039391A1 (en) Diagnostic method and device for controlling an internal combustion engine
EP0615582B1 (en) Ignition system for an internal combustion engine
EP0200196B1 (en) Contactless ignition device
EP1372826B1 (en) Method and device for assessing the operability of a device for reducing the ozone content in the air
DE102006018200A1 (en) Internal combustion engine, has secondary air pump provided for supply of secondary air to exhaust gas and connected with few exhaust gas flows by secondary air valve, where remaining gas flows are separated from pump and valve
DE10038458B4 (en) Apparatus and method for exhaust gas purification
DE4332098B4 (en) Engine control means
DE19963457B4 (en) Monitoring the chain of effects of cylinder deactivation in multi-cylinder internal combustion engines
DE102007037907A1 (en) Exhaust gas sensor assigning method for internal-combustion engine, of motor vehicle, involves changing operating conditions of part of internal-combustion engine during analysis measurement
DE2613607A1 (en) MULTICYLINDER ENGINE EXHAUST SYSTEM WITH TWO SEPARATE EXHAUST PIPES

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE ES FR GB IT SE

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): DE ES FR GB IT SE

17P Request for examination filed

Effective date: 19951220

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

17Q First examination report despatched

Effective date: 19960524

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE ES FR GB IT SE

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19970313

ET Fr: translation filed
REF Corresponds to:

Ref document number: 59500133

Country of ref document: DE

Date of ref document: 19970417

ITF It: translation for a ep patent filed

Owner name: STUDIO JAUMANN

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2100757

Country of ref document: ES

Kind code of ref document: T3

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20030430

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20030507

Year of fee payment: 9

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040513

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040513

EUG Se: european patent has lapsed
REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20040513

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20120531

Year of fee payment: 18

Ref country code: FR

Payment date: 20120619

Year of fee payment: 18

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20120529

Year of fee payment: 18

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20130512

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130512

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20140131

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130512

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130531

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20140614

Year of fee payment: 20

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 59500133

Country of ref document: DE