EP0001742B1 - Receptacle for balancing the cooling water of a combustion engine - Google Patents

Receptacle for balancing the cooling water of a combustion engine Download PDF

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Publication number
EP0001742B1
EP0001742B1 EP78100772A EP78100772A EP0001742B1 EP 0001742 B1 EP0001742 B1 EP 0001742B1 EP 78100772 A EP78100772 A EP 78100772A EP 78100772 A EP78100772 A EP 78100772A EP 0001742 B1 EP0001742 B1 EP 0001742B1
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EP
European Patent Office
Prior art keywords
valve
combustion engine
cooling water
expansion
tube
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
Application number
EP78100772A
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German (de)
French (fr)
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EP0001742A1 (en
Inventor
Erhard Bartsch
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.)
Iveco Magirus AG
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Magirus Deutz AG
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Publication date
Application filed by Magirus Deutz AG filed Critical Magirus Deutz AG
Publication of EP0001742A1 publication Critical patent/EP0001742A1/en
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Publication of EP0001742B1 publication Critical patent/EP0001742B1/en
Expired legal-status Critical Current

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Classifications

    • 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
    • F01P11/02—Liquid-coolant filling, overflow, venting, or draining devices

Definitions

  • the invention relates to a cooling water expansion tank for a water cooler of an internal combustion engine, which can be connected via a compensating line to the water cooler, which has a filler opening which can be closed by a lid and in which a valve which prevents the sudden backflow of cooling water from the water cooler into the expansion tank is arranged.
  • a cooling system for a water-cooled internal combustion engine is known from DE-A-25 31 629, in which an expansion tank is connected directly to a side wall of a cooler via a channel each near the bottom and one in the upper part.
  • a check valve is arranged in each of the channels, the lower valve preventing the backflow of coolant from the cooler into the expansion tank and the upper valve preventing the flow of coolant from the expansion tank into the cooler.
  • a cooler for a water-cooled internal combustion engine is known from US Pat. No. 3,863,690, in which a reservoir is plugged onto the radiator filler neck.
  • the passage opening between the storage container and the cooler is controlled by a valve device which can be opened and closed manually as required from the outside via an actuating rod.
  • the. Valve device designed so that the valve opens the connection to the reservoir and an intermediate overflow line when there is excess pressure in the cooler.
  • the known valve devices have the disadvantage that if the internal combustion engine overheats too much and the resulting excess pressure in the cooling system, a large part of the cooling liquid can escape to the outside via the expansion tank or reservoir. The consequence of this is that after the internal combustion engine has cooled, the cooling system has too little cooling liquid.
  • valve devices each impede the filling of the cooling system with cooling water.
  • the invention has for its object to provide a valve device for a water-cooled internal combustion engine with a water cooler and a surge tank, which prevents overheating of the engine that coolant can flow back from the cooling system into the surge tank or reservoir and on the other hand ensures an undisturbed filling of the cooling system with coolant.
  • the object is achieved in that a tube is attached to the inside of the cover, which extends into the connecting piece of the compensating line, a seal being arranged between the front end of the tube and the compensating line and that in the front end of the Pipe the valve is arranged in a valve chamber which is connected via openings in the pipe to the expansion line and to the expansion tank.
  • valve device according to the invention The disadvantages of the known valve devices are eliminated by the valve device according to the invention.
  • a water-cooled internal combustion engine has cooling water channels for cooling the hot cylinder walls within the machine housing, which are connected to one another via cooling water lines by a water cooler.
  • a surge tank 7 is arranged, which is connected to the water cooler via a surge line, also not shown.
  • the expansion tank 7 has the task of compensating for changes in volume of the cooling water when heating or cooling.
  • the cooling system is filled with coolant via the expansion tank.
  • one or more filling openings 9 are provided on the container, which are closed by a cover 10.
  • the expansion tank 7 has an extension 21 in the bottom 15, to which a connecting piece 17 connects for fastening the compensation line.
  • a tube 19 is attached to the inside of the cover 10, which opens with its front end 20 into the extension 21 and dadei lies tightly on a shoulder 25 of the extension via a seal 24.
  • a valve chamber 22, in which the check valve 13 is accommodated, is provided within the front end of the tube 19. The valve chamber 22 is connected via an opening 23 in the end face of the tube 19 to the connecting piece 17 of the compensating line and via openings 26 to the interior of the compensating container 7.
  • the valve 13 is used to control the backflow of expansion water from the cooling system into the expansion tank 7.
  • the valve 13 opened, ie there is a constant connection between the expansion tank and the cooling system via the openings 23 and 26, so that changes in volume of the cooling water during heating or cooling are constantly compensated for.
  • the connection to the expansion tank 7 is shut off via the valve 13 and thus prevents backflow of expansion water from the cooling circuit into the expansion tank.
  • valve 13 In order to avoid that the filling process is hindered by the valve 13, e.g. characterized in that the valve closes the connection from the expansion tank to the cooling circuit during the filling by rising air bubbles from the cooling system, the valve 13 is removed together with the pipe 19 from the expansion tank 7 by unscrewing the cover 10.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Temperature-Responsive Valves (AREA)

Description

Die Erfindung bezieht sich auf einen Kühlwasserausgleichsbehälter für einen Wasserkühler einer Brennkraftmaschine, der über eine Ausgleichsleitung am Wasserkühler anschliessbar ist, der eine mittels einem Deckel verschließbare Einfüllöffnung hat und in dem ein den plötzlichen Rückfluß von Kühlwasser vom Wasserkühler in den Ausgleichsbehälter verhinderndes Ventil angeordnet ist.The invention relates to a cooling water expansion tank for a water cooler of an internal combustion engine, which can be connected via a compensating line to the water cooler, which has a filler opening which can be closed by a lid and in which a valve which prevents the sudden backflow of cooling water from the water cooler into the expansion tank is arranged.

Aus der DE - A - 25 31 629 ist ein Kühlsystem für eine wassergekühlte Brennkraftmaschine bekannt, bei dem unmittelbar an einer Seitenwand eines Kühlers ein Ausgleichsbehälter über je einen in Bodennähe und einen im Oberteil angeordneten Kanal angeschlossen ist. In den Kanälen ist je ein Rückschlagventil angeordnet, wobei das untere Ventil den Rückfluß von Kühlmittel aus dem Kühler in den Ausgleichsbehälter und das obere Ventil den Durchfluß bon Kühlmittel aus dem Ausgleichsbehälter in den Kühler verhindert. Weiterhin ist aus der US - A - 3.863.690 ein Kühler für eine wassergekühlte Brennkraftmaschine bekannt, bei dem auf den Kühlereinfüllstutzen ein Vorratsbehälter aufgesteckt ist. Die Durchlaßöffnung zwischen Vorratsbehälter und Kühler wird beherrscht von einer Ventilvorrichtung, die über eine Betätigungsstange von außen nach Bedarf manuell geöffnet bzw. geschlossen werden kann. Darüber hinaus ist die. Ventilvorrichtung so ausgebildet, daß bei einem Überdruck im Kühler das Ventil die Verbindung zum Vorratsbehälter sowie einer zwischengeschalteten Überlaufleitung öffnet.A cooling system for a water-cooled internal combustion engine is known from DE-A-25 31 629, in which an expansion tank is connected directly to a side wall of a cooler via a channel each near the bottom and one in the upper part. A check valve is arranged in each of the channels, the lower valve preventing the backflow of coolant from the cooler into the expansion tank and the upper valve preventing the flow of coolant from the expansion tank into the cooler. Furthermore, a cooler for a water-cooled internal combustion engine is known from US Pat. No. 3,863,690, in which a reservoir is plugged onto the radiator filler neck. The passage opening between the storage container and the cooler is controlled by a valve device which can be opened and closed manually as required from the outside via an actuating rod. In addition, the. Valve device designed so that the valve opens the connection to the reservoir and an intermediate overflow line when there is excess pressure in the cooler.

Die bekannten Ventilvorrichtungen haben den Nachteil, daß bei einer zu starken Überhitzung der Brennkraftmaschine und durch den dabei entstehenden Überdruck im Kühlsystem ein Großteil an Kühlflüssigkeit über den Ausgleichs- bzw. Vorratsbehälter nach außen entweichen kann. Die Folge davon ist, daß nach Abkühlung der Brennkraftmaschine das Kühlsystem eine zu geringe Menge an Kühlflüssigkeit aufweist.The known valve devices have the disadvantage that if the internal combustion engine overheats too much and the resulting excess pressure in the cooling system, a large part of the cooling liquid can escape to the outside via the expansion tank or reservoir. The consequence of this is that after the internal combustion engine has cooled, the cooling system has too little cooling liquid.

Ein weiterer Nachteil besteht darin, daß die Ventilvorrichtungen jeweils das Auffüllen des Kühlsystems mit Kühlwasser behindern.Another disadvantage is that the valve devices each impede the filling of the cooling system with cooling water.

Ausgehend von diesem Stand der Technik liegt der Erfindung die Aufgabe zugrunde, für eine wassergekühlte Brennkraftmaschine mit einem Wasserkühler und einem Ausgleichsbehälter eine Ventilvorrichtung zu schaffen, die einmal bei einer Überhitzung der Brennkraftmaschine verhindert, daß Kühlflüssigkeit aus dem Kühlsystem in den Ausgleichsbehälter bzw. Vorratsbehälter zurückfließen kann und zum andern ein ungestörtes Auffüllen des Kühlsystems mit Kühlflüssigkeit gewährleistet.Based on this prior art, the invention has for its object to provide a valve device for a water-cooled internal combustion engine with a water cooler and a surge tank, which prevents overheating of the engine that coolant can flow back from the cooling system into the surge tank or reservoir and on the other hand ensures an undisturbed filling of the cooling system with coolant.

Gemäß der Erfindung wird die Aufgabe dadurch gelöst, daß an der Innenseite des Deckels ein Rohr befestigt ist, das bis in den Anschlußstutzen der Ausgleichsleitung reicht, wobei zwischen dem vorderen Ende des Rohres und der Ausgleichsleitung eine Dichtung angeordnet ist und daß in dem vorderen Ende des Rohres das Ventil in einer Ventilkammer angeordnet ist die über Öffnungen im Rohr mit der Ausgleichsleitung sowie mit dem Ausgleichsbehälter verbunden ist.According to the invention the object is achieved in that a tube is attached to the inside of the cover, which extends into the connecting piece of the compensating line, a seal being arranged between the front end of the tube and the compensating line and that in the front end of the Pipe the valve is arranged in a valve chamber which is connected via openings in the pipe to the expansion line and to the expansion tank.

Durch die erfindungsgemäße Ventilvorrichtung werden die Nachteile der bekannten Ventilvorrichtungen beseitigt.The disadvantages of the known valve devices are eliminated by the valve device according to the invention.

In der Zeichnung ist ein Ausführungsbeispiel der Erfindung dargestellt.In the drawing, an embodiment of the invention is shown.

Es zeigen:

  • Fig. 1 in einem senkrechten Querschnitt einen Kühlwasserausgleichsbehälter mit einem am Deckel der Einfüllöffnung befestigten Rohr und dem innerhalb des Rohres angeordneten erfindungsgemäßen Ventil.
  • Fig. 2 den Ausgleichsbehälter aus Fig. 1 mit für den Einfüllvorgang herausgezogenen Rohr.
Show it:
  • Fig. 1 in a vertical cross-section a cooling water expansion tank with a pipe attached to the cover of the filler opening and the valve according to the invention arranged inside the pipe.
  • Fig. 2 shows the expansion tank from Fig. 1 with the tube pulled out for the filling process.

Eine nicht dargestellte wassergekühlte Brennkraftmaschine hat zur Kühlung der heißen Zylinderwände innerhalb des Maschinengehäuses Kühlwasserkanäle, die über Kühlwasserleitungen durch einen Wasserkühler miteinander verbunden sind. Über dem höchsten Punkt des Kühlsystems ist in der Nähe der Brennkraftmaschine ein Ausgleichsbehälter 7 angeordent, der über eine ebenfalls nicht dargestellte Ausgleichsleitung an den Wasserkühler angeschlossen ist. Der Ausgleichsbehälter 7 hat die Aufgabe, Volumenänderungen des Kühlwassers beim Erwärmen oder Abkühlen auszugleichen. Darüber hinaus wird über den Ausgleichsbehälter das Kühlsystem mit Kühlflüssigkeit gefüllt. Für das Einfüllen von Kühlflüssigkeit sind am Behälter ein oder mehrere Einfüllöffunungen 9 vorgesehen, die durch einen Deckel 10 verschlossen sind. Der Ausgleichsbehälter 7 hat im Boden 15 eine Erweiterung 21, an die sich ein Anschlußstutzen 17 zur Befestigung der Ausgleichsleitung anschließt.A water-cooled internal combustion engine, not shown, has cooling water channels for cooling the hot cylinder walls within the machine housing, which are connected to one another via cooling water lines by a water cooler. Above the highest point of the cooling system in the vicinity of the internal combustion engine, a surge tank 7 is arranged, which is connected to the water cooler via a surge line, also not shown. The expansion tank 7 has the task of compensating for changes in volume of the cooling water when heating or cooling. In addition, the cooling system is filled with coolant via the expansion tank. For the filling of cooling liquid, one or more filling openings 9 are provided on the container, which are closed by a cover 10. The expansion tank 7 has an extension 21 in the bottom 15, to which a connecting piece 17 connects for fastening the compensation line.

Gemäß der Erfindung ist an der Innenseite des Deckels 10 ein Rohr 19 befestigt, das mit seinem vorderen Ende 20 in die Erweiterung 21 mündet und dadei über eine Dichtung 24 auf einer Schulter 25 der Erweiterung dicht aufliegt. Innerhalb des vorderen Endes des Rohres 19 ist eine Ventilkammer 22 vorgesehen, in der das Rückschlagventil 13 untergebracht ist. Die Ventilkammer 22 ist über eine Öffnung 23 in der Stirnseite des Rohres 19 mit dem Anschlußstutzen 17 der Ausgleichsleitung und über Öffnungen 26 mit dem Innenraum des Ausgleichsbehälters 7 verbunden.According to the invention, a tube 19 is attached to the inside of the cover 10, which opens with its front end 20 into the extension 21 and dadei lies tightly on a shoulder 25 of the extension via a seal 24. A valve chamber 22, in which the check valve 13 is accommodated, is provided within the front end of the tube 19. The valve chamber 22 is connected via an opening 23 in the end face of the tube 19 to the connecting piece 17 of the compensating line and via openings 26 to the interior of the compensating container 7.

Das Ventil 13 dient zur Steuerung der Rückströmung von Ausdehnungswasser aus dem Kühlsystem in den Ausgelichsbehälter 7. Im normalen Betrieb der Brennkraftmaschine ist das Ventil 13 geöffnet, d.h., zwischen Ausgleichsbehälter und Kühlsystem besteht eine ständige Verbindung über die Öffnungen 23 und 26, so daß Volumenänderungen des Kühlwassers beim Erwärmen oder Abkühlen stetig ausgeglichen werden. Bei einer plötzlichen und all zu starken Erwärmung des Kühlwassers - z.B. durch einen sogenannten Thermoschock - wird über das Ventil 13 die Verbindung zum Ausgleichsbehälter 7 abgesperrt und damit eine Rückströmung von Ausdehnungswasser aus dem Kühlkreislauf in den Ausgleichsbehälter verhindert.The valve 13 is used to control the backflow of expansion water from the cooling system into the expansion tank 7. In normal operation of the internal combustion engine the valve 13 opened, ie there is a constant connection between the expansion tank and the cooling system via the openings 23 and 26, so that changes in volume of the cooling water during heating or cooling are constantly compensated for. In the event of sudden and excessive heating of the cooling water - for example by a so-called thermal shock - the connection to the expansion tank 7 is shut off via the valve 13 and thus prevents backflow of expansion water from the cooling circuit into the expansion tank.

Um zu vermeiden, daß durch das Ventil 13 der Auffüllvorgang behindert wird, z.B. dadurch, daß während des Auffüllens durch aufsteigende Luftblasen aus dem Kühlsystem das Ventil die Verbindung vom Ausgleichsbehälter zum Kühlkreislauf abschließt, wird das Ventil 13 mit dem Abschrauben des Deckels 10 zusammen mit dem Rohr 19 aus dem Ausgleichsbehälter 7 herausgenommen.In order to avoid that the filling process is hindered by the valve 13, e.g. characterized in that the valve closes the connection from the expansion tank to the cooling circuit during the filling by rising air bubbles from the cooling system, the valve 13 is removed together with the pipe 19 from the expansion tank 7 by unscrewing the cover 10.

Claims (1)

  1. A cooling water expansion reservoir (7) for a water radiator of an internal combustion engine, which reservoir is connectable to the radiator via an expansion pipe and is provided with-an inlet (9) sealable by means of a cover (10), and in which a valve (13) serving to prevent a sudden return of cooling water from the radiator into the expansion reservoir (7) is disposed, characterised in that a tube (19) which extends into a connecting socket (17) of the expansion pipe is secured at one end to the inner face of the cover (10), a seal (24) being disposed between the other end (20) of the tube and the expansion pipe, and in that the valve (13) is disposed in a valve chamber (22) adjoining said other end (20) of the tube (19), the valve chamber communicating with the expansion pipe and the expansion tank (7) through apertures (23 and 26 respectively) in the tube (19).
EP78100772A 1977-10-29 1978-08-28 Receptacle for balancing the cooling water of a combustion engine Expired EP0001742B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19772748741 DE2748741A1 (en) 1977-10-29 1977-10-29 WATER-COOLED COMBUSTION ENGINE
DE2748741 1977-10-29

Publications (2)

Publication Number Publication Date
EP0001742A1 EP0001742A1 (en) 1979-05-16
EP0001742B1 true EP0001742B1 (en) 1982-03-17

Family

ID=6022686

Family Applications (1)

Application Number Title Priority Date Filing Date
EP78100772A Expired EP0001742B1 (en) 1977-10-29 1978-08-28 Receptacle for balancing the cooling water of a combustion engine

Country Status (2)

Country Link
EP (1) EP0001742B1 (en)
DE (2) DE2748741A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1295598C (en) * 1986-07-29 1992-02-11 Makoto Imanari Process for removing nitrogen oxides from exhaust gases
DE4315729C2 (en) * 1993-05-11 2000-08-31 Bayerische Motoren Werke Ag Cross flow cooler with integrated expansion tank
IT1277851B1 (en) * 1994-01-28 1997-11-12 Radiadores Ordonez S A IMPROVEMENTS INTRODUCED IN THE DEGASSING CIRCUITS OF RADIATORS.
CN100362220C (en) * 2005-11-18 2008-01-16 陈延彬 Colling water tank for single cylinder diesel engine and its mfg. tech.
GB2458263A (en) * 2008-03-10 2009-09-16 Ford Global Tech Llc Cooling system expansion tank

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2086441A (en) * 1934-08-25 1937-07-06 Samuel W Rushmore Cooling system for internal combustion engines
US2878794A (en) * 1957-07-29 1959-03-24 Ralph O Stromberg Automobile cooling system
US3132634A (en) * 1962-09-10 1964-05-12 Charles R Butler Cooling system for internal combustion engines
US3863690A (en) * 1973-06-11 1975-02-04 John O Dean Radiator filler
DE2531629A1 (en) * 1974-07-18 1976-01-29 Walter C Avrea COOLER DEVICE

Also Published As

Publication number Publication date
DE2861669D1 (en) 1982-04-15
DE2748741A1 (en) 1979-05-03
EP0001742A1 (en) 1979-05-16

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