DE19518892A1 - Warning system for early detection of corrosion caused by cooling fluid in motor vehicle cooling system - Google Patents
Warning system for early detection of corrosion caused by cooling fluid in motor vehicle cooling systemInfo
- Publication number
- DE19518892A1 DE19518892A1 DE1995118892 DE19518892A DE19518892A1 DE 19518892 A1 DE19518892 A1 DE 19518892A1 DE 1995118892 DE1995118892 DE 1995118892 DE 19518892 A DE19518892 A DE 19518892A DE 19518892 A1 DE19518892 A1 DE 19518892A1
- Authority
- DE
- Germany
- Prior art keywords
- risk
- corrosion
- layer
- radiator
- motor vehicle
- 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.)
- Withdrawn
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
- F01P11/06—Cleaning; Combating corrosion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
- F01P11/14—Indicating devices; Other safety devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
- F01P11/06—Cleaning; Combating corrosion
- F01P2011/066—Combating corrosion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
- F01P11/14—Indicating devices; Other safety devices
- F01P2011/205—Indicating devices; Other safety devices using heat-accumulators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P2025/00—Measuring
- F01P2025/80—Concentration anti-freeze
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P2031/00—Fail safe
- F01P2031/20—Warning devices
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Ecology (AREA)
- Biodiversity & Conservation Biology (AREA)
- Environmental Sciences (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
Description
Die Erfindung wird beispielhaft anhand eines mit Flüssigkeit gekühltem Kraft fahrzeugmotor beschrieben, ist aber auch für andere Wärmetauschersysteme anwendbar.The invention is exemplified by a liquid-cooled force Vehicle engine described, but is also for other heat exchanger systems applicable.
Kühler von Kraftfahrzeugen werden aus Kostengründen zunehmend aus dünnwan digen Aluminiumlegierungen hergestellt, ein Werkstoff der besonders korrosions anfällig ist. Um Schäden zu vermeiden, werden der Kühlflüssigkeit Schutzmittel beigemischt, die unter normalen Betriebsbedingungen, ihren Zweck ausreichend erfüllen.Coolers of motor vehicles are increasingly made of thin material for cost reasons aluminum alloys, a material that is particularly corrosive is vulnerable. To avoid damage, the coolant is protective admixed that under normal operating conditions, their purpose sufficient fulfill.
Steigt aus irgend einem Grund die Aggressivität der Kühlflüssigkeit an, kann es zu Korrosionsschäden kommen, die bis zum Durchbruch des Kühlers und u. U. zum Motorschaden führen können.If for some reason the aggressiveness of the coolant increases, it can corrosion damage, which can occur until the radiator breaks through and U. can lead to engine damage.
Die Gefahr erhöht sich naturgemäß, wenn in dem Kühlkreislauf ein sog. Latent wärmespeicher einbezogen wird, der mit einem ätzendem Medium als Arbeitsmit tel gefüllt ist. Bei einer Leckage im Kühlkreislauf kann es zu Korrosionsschäden kommen.The risk naturally increases if there is a so-called latent in the cooling circuit heat storage is included, which works with an etching medium tel is filled. Leakage in the cooling circuit can lead to corrosion damage come.
Der Erfindung liegt die Aufgabe zugrunde, ein preiswertes Warnsystem zu schaffen, das der Beginn einer echten Korrosionsgefahr anzeigt, lange bevor ein Schaden auftritt, so daß genug Zeit vorhanden bleibt, die aufgetretene Störung zu beseitigen.The invention has for its object to an inexpensive warning system create that indicates the beginning of a real risk of corrosion long before one Damage occurs so that there is enough time, the disruption that has occurred to eliminate.
Darüber hinaus sollten möglicherweise andere Änderungen der Kühlflüssigkeits qualität, wie z. B. elektrische Leitfähigkeit oder PH, die solange sie für das Kühl system ungefährlich sind, nicht angezeigt werden, um die Auslösung eines fal schen Alarms zu vermeiden.In addition, there may be other changes to the coolant quality, such as B. electrical conductivity or PH, as long as they are for cooling system are harmless, are not shown to trigger a fal to avoid alarms.
Die Lösung dieser Aufgabe ist Gegenstand dieser Erfindung. Ein Teststreifen mit gleichen oder vergleichbaren Korrosionseigenschaften, jedoch mit um Größenord nungen geringerer Wandstärke als das Kühlermaterial, wird im Kühlkreislauf ein gebaut. Im Störfall wird der Streifen aufgelöst, lange bevor ein Schaden für den Kühler entstehen kann. Bei nicht zu dünner Schicht, kann die Erfassung elek trisch erfolgen, in der Art, daß der Streifen als leitende Schicht auf einen geeig neten Isolierkörper aufgebracht wird und je nach Schaltung, mit einem oder zwei wasserdichten elektrischen Durchführungen in einem Stromkreis verbunden wird. Bei Unterbrechung der Schicht und damit des Stromkreises, wird eine Warnmeldung ausgelöst.This object is the subject of this invention. A test strip with same or comparable corrosion properties, but with order of magnitude If the wall thickness is less than that of the cooler material, the built. In the event of a malfunction, the strip is broken up long before damage is caused to the Cooler can arise. If the layer is not too thin, the detection can be elec trisch done in such a way that the strip as a conductive layer on a geeig Neten insulating body is applied and depending on the circuit, with one or two waterproof electrical feedthroughs connected in one circuit becomes. If the layer and thus the circuit are interrupted, a Warning message triggered.
Dünne Schichten mit definierten Eigenschaften können mittels Aufdampf- oder Sputterverfahren im Hochvakuum preiswert hergestellt werden.Thin layers with defined properties can be deposited or Sputtering processes can be produced inexpensively in a high vacuum.
Im Folgenden wird die Erfindung anhand einer lediglich einiger Ausführungsbeispiele darstellenden Zeichnung ausführlich erläutert.In the following, the invention is described using only a few exemplary embodiments illustrative drawing explained in detail.
Bei dem Typ 1 Geber sind zwei Leitungen vorhanden, die mit der dünnen Schicht verbunden sind. Dies ist erforderlich, wenn der Geber isoliert in den Kühlkreis lauf montiert wird. (Montage 1).The Type 1 encoder has two lines that are connected to the thin layer. This is necessary if the encoder is mounted in the cooling circuit in isolation. (Montage 1 ).
Bei Typ 2 Geber reicht eine Leitung, da die Schicht auch mit dem an Masse lieg enden Motorblock kontaktiert ist. (Montage 2).In the case of type 2 sensors, one line is sufficient, since the layer is also in contact with the engine block connected to ground. (Montage 2 ).
Schaltung 1 bis 3 zeigen verschiedene Varianten der Signalverarbeitung.Circuit 1 to 3 show different variants of signal processing.
Claims (5)
- 1) bestehend aus einer Schicht aus einem dem gefährdetem Kühler ähnlichem Werkstoff, dadurch gekennzeichnet, daß die Wandstärke wesentlich dünner ist als die der gefährdeten Stelle und somit ihre Zerstörung durch Korrosion er folgt, lange bevor ein Schaden für den Kühler entstehen kann.
- 1) consisting of a layer of a material similar to the endangered cooler, characterized in that the wall thickness is considerably thinner than that of the endangered area and thus its destruction by corrosion, it follows long before damage to the cooler can occur.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1995118892 DE19518892A1 (en) | 1995-05-23 | 1995-05-23 | Warning system for early detection of corrosion caused by cooling fluid in motor vehicle cooling system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1995118892 DE19518892A1 (en) | 1995-05-23 | 1995-05-23 | Warning system for early detection of corrosion caused by cooling fluid in motor vehicle cooling system |
Publications (1)
Publication Number | Publication Date |
---|---|
DE19518892A1 true DE19518892A1 (en) | 1996-11-28 |
Family
ID=7762656
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1995118892 Withdrawn DE19518892A1 (en) | 1995-05-23 | 1995-05-23 | Warning system for early detection of corrosion caused by cooling fluid in motor vehicle cooling system |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE19518892A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19646841A1 (en) * | 1996-11-13 | 1998-05-14 | Eilenburger Elektrolyse & Umwelttechnik Gmbh | Directly determining metal removal rate in etching and pickling solutions |
EP1270935A3 (en) * | 2001-06-25 | 2004-03-03 | Toyota Jidosha Kabushiki Kaisha | Internal combustion engine with heat accumulating device and method of controlling same |
-
1995
- 1995-05-23 DE DE1995118892 patent/DE19518892A1/en not_active Withdrawn
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19646841A1 (en) * | 1996-11-13 | 1998-05-14 | Eilenburger Elektrolyse & Umwelttechnik Gmbh | Directly determining metal removal rate in etching and pickling solutions |
EP1270935A3 (en) * | 2001-06-25 | 2004-03-03 | Toyota Jidosha Kabushiki Kaisha | Internal combustion engine with heat accumulating device and method of controlling same |
EP1712780A2 (en) * | 2001-06-25 | 2006-10-18 | Toyota Jidosha Kabushiki Kaisha | Internal combustion engine with heat accumulating device and method of controlling same |
EP1719908A2 (en) * | 2001-06-25 | 2006-11-08 | Toyota Jidosha Kabushiki Kaisha | Internal combustion engine with heat accumulating device and method of controlling same |
EP1712780A3 (en) * | 2001-06-25 | 2006-11-29 | Toyota Jidosha Kabushiki Kaisha | Internal combustion engine with heat accumulating device and method of controlling same |
EP1719908A3 (en) * | 2001-06-25 | 2006-11-29 | Toyota Jidosha Kabushiki Kaisha | Internal combustion engine with heat accumulating device and method of controlling same |
CN1607327B (en) * | 2001-06-25 | 2010-07-21 | 丰田自动车株式会社 | Engine system with IC engine system and heat storage device |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8139 | Disposal/non-payment of the annual fee |