DE10306698A1 - Method and device for monitoring an internal combustion engine - Google Patents
Method and device for monitoring an internal combustion engine Download PDFInfo
- Publication number
- DE10306698A1 DE10306698A1 DE10306698A DE10306698A DE10306698A1 DE 10306698 A1 DE10306698 A1 DE 10306698A1 DE 10306698 A DE10306698 A DE 10306698A DE 10306698 A DE10306698 A DE 10306698A DE 10306698 A1 DE10306698 A1 DE 10306698A1
- Authority
- DE
- Germany
- Prior art keywords
- temperature sensor
- threshold
- signals
- signal
- time
- 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
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
- F02D41/22—Safety or indicating devices for abnormal conditions
- F02D41/222—Safety or indicating devices for abnormal conditions relating to the failure of sensors or parameter detection devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K3/00—Thermometers giving results other than momentary value of temperature
- G01K3/08—Thermometers giving results other than momentary value of temperature giving differences of values; giving differentiated values
- G01K3/10—Thermometers giving results other than momentary value of temperature giving differences of values; giving differentiated values in respect of time, e.g. reacting only to a quick change of temperature
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Abstract
Es wird ein Verfahren bzw. eine Vorrichtung zur Überwachung einer Brennkraftmaschine vorgeschlagen, bei dem die Signale eines Temperatursensors (S) auf Plausibilität überprüft werden. Für diese Überprüfung der Plausibilität wird die zeitliche Veränderung der Signale (deltas) des Temperatursensors betrachtet (Figur 3).A method and a device for monitoring an internal combustion engine are proposed, in which the signals of a temperature sensor (S) are checked for plausibility. The temporal change in the signals (deltas) of the temperature sensor is considered for this check of the plausibility (FIG. 3).
Description
Stand der TechnikState of technology
Die Erfindung geht aus von einem Verfahren bzw. einer Vorrichtung zur Überwachung einer Brennkraftmaschine nach der Gattung der unabhängigen Patentansprüche. Es sind bereits Verfahren und Vorrichtungen zur Überwachung einer Brennkraftmaschine bekannt, bei denen die Signale eines Temperatursensors aus Plausibilität überprüft werden. Die Überprüfung auf Plausibilität erfolgt dadurch, dass die von dem Temperatursensor gelieferten Signale mit einem Minimalwert oder einem Maximalwert verglichen werden. Es kann so ein Kabelabfall bzw. ein Kurzschluss zur Batteriespannung hin erkannt werden.The invention is based on one Method or device for monitoring an internal combustion engine according to the genus of the independent Claims. There are already methods and devices for monitoring an internal combustion engine known in which the signals of a temperature sensor are checked for plausibility. Checking on plausibility takes place in that the signals supplied by the temperature sensor can be compared with a minimum value or a maximum value. There may be a cable drop or a short circuit to the battery voltage be recognized.
Vorteile der EndungAdvantages of ending
Das erfindungsgemäße Verfahren bzw. die erfindungsgemäße Vorrichtung mit den Merkmalen der unabhängigen Patentansprüche haben demgegenüber den Vorteil, dass weitere Fehler erkannt werden können. Insbesondere können Fehler erkannt werden, die durch ein Lockern eines Steckers an dem Temperatursensor verursacht sind.The method according to the invention and the device according to the invention with the characteristics of independent claims have against it the advantage that further errors can be recognized. In particular can Errors can be detected by loosening a connector on the Temperature sensor are caused.
Weitere Vorteile und Verbesserungen ergeben sich durch die Merkmale der abhängigen Patentansprüche. Durch Auswertung von starken Signaländerungen über einem ersten Schwellwert wird ein Lösen der Kontakte erkannt, welches zu einem deutlich erhöhten Durchgangswiderstand durch den Stecker führt. Durch die Auswertung von geringeren Signaländerungen, die zwischen einem ersten und einem zweiten Schwellwert liegen und in vorgegebener Anzahl in einem vorgegebenen Zeitraum erfolgen, lässt sich ein Wackelkontakt an einem Stecker erkennen. Besonders einfach kann diese Auswertung erfolgen, indem beim Auftreten derartiger Signaländerungen ein Zähler beeinflusst wird, der dann in Abhängigkeit von der Zeit wieder verringert wird.Further advantages and improvements result from the features of the dependent claims. By Evaluation of strong signal changes over a The first threshold is a release of the contacts recognized, which leads to a significantly increased volume resistance through the connector. By evaluating minor signal changes between one first and a second threshold value and in a predetermined number A loose contact can be made in a given period of time recognize by a plug. This evaluation can be carried out particularly easily, by influencing a counter when such signal changes occur which then becomes dependent is decreased again from time.
Zeichnungendrawings
Ausführungsbeispiele der Erfindung werden in den Zeichnungen dargestellt und in der nachfolgenden Beschreibung näher erläutert. Es zeigenEmbodiments of the invention are shown in the drawings and in the description below explained in more detail. It demonstrate
Beschreibungdescription
In der
Erfindungsgemäß wird nun vorgeschlagen, nicht
nur die Absolutwerte der Sensorsignale, sondern auch die zeitlichen
Veränderungen
des Sensorsignals δs
, d. h. die zeitlichen Gradienten des Sensorsignals zu betrachten.
Da ein Kraftfahrzeugmotor eine gewisse thermische Trägheit aufweist,
weisen die normalen Signale des Temperatursensors auch eine entsprechende
Trägheit
auf. Es können
somit bestimmte zeitliche Gradienten nicht überschritten werden, d. h.
die zeitlichen Änderungen
des Temperatursignals können
zeitlich nicht so abrupt verlaufen, wie dies in der
In der
In der
Wenn in dem Schritt 102 festgestellt
wird, dass δs
unterhalb der zweiten Schwelle liegt, so ist klar, dass es sich
um eine geringe übliche
Temperaturänderung
handelt, wie sie beim normalen Betrieb der Brennkraftmaschine auftritt.
Wenn im Schritt 104 festgestellt wird, dass der Signalgradient δs zwischen
der zweiten und der ersten Schwelle liegt, so folgt der Schritt
105. Durch die Verfahrensschritte 103, 105 und 106 wird die zur
Bezüglich der Fehlermeldung 107
ist im Rahmen des in der
Claims (8)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10306698A DE10306698B4 (en) | 2003-02-18 | 2003-02-18 | Method and device for monitoring an internal combustion engine |
FR0401526A FR2851299B1 (en) | 2003-02-18 | 2004-02-16 | METHOD AND DEVICE FOR MONITORING A THERMAL ENGINE |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10306698A DE10306698B4 (en) | 2003-02-18 | 2003-02-18 | Method and device for monitoring an internal combustion engine |
Publications (2)
Publication Number | Publication Date |
---|---|
DE10306698A1 true DE10306698A1 (en) | 2004-09-02 |
DE10306698B4 DE10306698B4 (en) | 2005-10-20 |
Family
ID=32747966
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE10306698A Expired - Fee Related DE10306698B4 (en) | 2003-02-18 | 2003-02-18 | Method and device for monitoring an internal combustion engine |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE10306698B4 (en) |
FR (1) | FR2851299B1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004058714A1 (en) * | 2004-12-06 | 2006-06-14 | Siemens Ag | Method and device for checking temperature values of a temperature sensor of an internal combustion engine |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005009103B4 (en) * | 2005-02-28 | 2007-02-15 | Siemens Ag | Method and device for diagnosing an air intake sensor associated with an intake tract of an internal combustion engine |
JP5573352B2 (en) * | 2010-05-17 | 2014-08-20 | いすゞ自動車株式会社 | Validity diagnosis system for urea water temperature sensor |
FR3095004B1 (en) | 2019-04-11 | 2021-04-16 | Psa Automobiles Sa | PROCESS FOR DIAGNOSING A TEMPERATURE DRIFT IN A FLUID COOLING SYSTEM OF A TRACTION CHAIN |
FR3133919B1 (en) * | 2022-03-28 | 2024-03-01 | Psa Automobiles Sa | MONITORING THE PROPER OPERATION OF A TRACTION BATTERY HEAT TRANSFER CIRCUIT TEMPERATURE SENSOR |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19855971A1 (en) * | 1998-12-04 | 2000-06-15 | Zahnradfabrik Friedrichshafen | Monitoring operation of temperature sensor for automatic transmission of motor vehicle by comparing with temperature of reference junction to detector error |
DE10012956A1 (en) * | 2000-03-16 | 2001-09-20 | Bosch Gmbh Robert | Engine ignition energy regulation device calculates additional energy loss of ignition end stage and/or effective energy reduction for selective disconnection of ignition end stage |
DE10017544A1 (en) * | 2000-04-08 | 2001-10-11 | Bosch Gmbh Robert | Method for determination of a replacement value for a faulty sensor, especially a temperature sensor for use with a combustion engine, so that the replacement value more accurately reflects a real value |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4426494B4 (en) * | 1994-07-27 | 2007-02-22 | Robert Bosch Gmbh | Method for monitoring the cooling system in an internal combustion engine |
JP3675108B2 (en) * | 1996-06-24 | 2005-07-27 | トヨタ自動車株式会社 | Fault diagnosis device for water temperature sensor |
JP3565800B2 (en) * | 2001-07-05 | 2004-09-15 | 本田技研工業株式会社 | Temperature sensor failure judgment device |
-
2003
- 2003-02-18 DE DE10306698A patent/DE10306698B4/en not_active Expired - Fee Related
-
2004
- 2004-02-16 FR FR0401526A patent/FR2851299B1/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19855971A1 (en) * | 1998-12-04 | 2000-06-15 | Zahnradfabrik Friedrichshafen | Monitoring operation of temperature sensor for automatic transmission of motor vehicle by comparing with temperature of reference junction to detector error |
DE10012956A1 (en) * | 2000-03-16 | 2001-09-20 | Bosch Gmbh Robert | Engine ignition energy regulation device calculates additional energy loss of ignition end stage and/or effective energy reduction for selective disconnection of ignition end stage |
DE10017544A1 (en) * | 2000-04-08 | 2001-10-11 | Bosch Gmbh Robert | Method for determination of a replacement value for a faulty sensor, especially a temperature sensor for use with a combustion engine, so that the replacement value more accurately reflects a real value |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004058714A1 (en) * | 2004-12-06 | 2006-06-14 | Siemens Ag | Method and device for checking temperature values of a temperature sensor of an internal combustion engine |
DE102004058714B4 (en) * | 2004-12-06 | 2006-08-31 | Siemens Ag | Method and device for checking temperature values of a temperature sensor of an internal combustion engine |
US7380983B2 (en) | 2004-12-06 | 2008-06-03 | Siemens Aktiengesellschaft | Method and device for checking temperature values of a temperature sensor of an internal combustion engine |
Also Published As
Publication number | Publication date |
---|---|
DE10306698B4 (en) | 2005-10-20 |
FR2851299A1 (en) | 2004-08-20 |
FR2851299B1 (en) | 2010-02-19 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
8364 | No opposition during term of opposition | ||
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |