EP0171623B1 - Volume compensation, venting and supply container for the liquid cooling system of an internal-combustion engine - Google Patents

Volume compensation, venting and supply container for the liquid cooling system of an internal-combustion engine Download PDF

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Publication number
EP0171623B1
EP0171623B1 EP85108810A EP85108810A EP0171623B1 EP 0171623 B1 EP0171623 B1 EP 0171623B1 EP 85108810 A EP85108810 A EP 85108810A EP 85108810 A EP85108810 A EP 85108810A EP 0171623 B1 EP0171623 B1 EP 0171623B1
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EP
European Patent Office
Prior art keywords
chamber
filling
filling nozzle
container
opening
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
EP85108810A
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German (de)
French (fr)
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EP0171623A2 (en
EP0171623A3 (en
Inventor
Dieter Spindelböck
Erwin Schweiger
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Bayerische Motoren Werke AG
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Bayerische Motoren Werke AG
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Publication of EP0171623A2 publication Critical patent/EP0171623A2/en
Publication of EP0171623A3 publication Critical patent/EP0171623A3/en
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    • 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
    • F01P11/029—Expansion reservoirs

Definitions

  • the invention relates to a container of the type according to the preamble of claims 1 and 2 respectively.
  • FR-A 2 484 533 describes the formation of the container made of molded plastic parts known from DE-A 28 52 725. However, the plastic structure does not change its possible application in cooling systems other than those described above.
  • FR-A 2 272 858 describes a cooler with an integrated storage container for vehicles.
  • a pressureless storage container is used, which is placed on the water tank of the cooler and is integrally connected to it.
  • a storage room in the water tank is functionally necessary, since otherwise the cooling water tubes would not be completely filled with water.
  • a water-air mixture would be used for cooling during operation of the internal combustion engine, but this does not allow effective cooling for the known reasons.
  • this arrangement also does not show a storage container which has two separate chambers. Furthermore, due to the integration of the storage container on the cooling water tank of a cooler, this document shows no connection for a bypass ventilation line from a high point of the cooling system and no filling line to the suction side of a coolant pump.
  • the invention achieves a first solution to the problem by the characterizing features of patent claim 1.
  • a second solution to the problem according to the characterizing features of claim 2 has only two molded parts, one chamber being formed solely by the filler neck. This enables an even lower construction effort.
  • the features of claim 3 include an advantageous further development of the solution according to claim 2.
  • a further modification of the invention according to claim 4 enables the filler neck with overflow line to be shaped separately and attached in an overhead opening of the second chamber without significant additional effort.
  • the container of the invention can be designed in its outer dimensions, in the arrangement of its connections and its also moldable fastening elements so that it is easily interchangeable with conventional single-chamber containers to improve the function of the cooling system on internal combustion engines already in use. Furthermore, the container can be structurally combined in a known manner with a cooler water tank and one of the molded parts of the container can be integrally molded onto a coolant water tank.
  • a container 1 for the volume changes caused by temperature and pressure changes of the coolant in the cooling system of internal combustion engines, for venting the cooling system and for a supply to compensate for coolant consumption due to leaks and by ejection via pressure relief valves consists of three one-piece plastic molded parts, namely a first one lower chamber 2, a second upper chamber 3 and an intermediate wall 4. These parts are permanently connected to one another by welding, gluing or the like to form a one-piece container in two parting planes 4 '.
  • the intermediate wall 4 is arranged horizontally in the installed position of the container 1 and has an opening through which the lower chamber 2, via a filler neck 6 integrally formed on the inside and top outside of the upper chamber 3, with its fill Opening 7 is connected and sealed to the interior of the upper chamber.
  • the filler opening 7 is arranged on an outer section 8 of the filler neck 6, which has an enlarged inner cross section compared to the inner section 9, as well as an external thread 10, an upper sealing surface 11 and an inner sealing surface 12 delimiting the lower section, for a pressure and vacuum valve, not shown Containing closure cover has commercial training.
  • the inner section 9 of the filler neck 6 is formed on its outside arranged in the upper chamber 3, an overflow line 13, which extends from an upper mouth 14 in the outer section 8 radially outside the sealing surface 12 to a lower mouth 15 in the bottom region of the upper Chamber 3 extends just above the partition 4.
  • the upper chamber 3 is also formed at a high point, a hose connector 16, which is used to connect a hose for atmospheric ventilation and for a coolant overflow from the upper chamber 3.
  • a further opening 17 for a filling cover, for a level sensor switch and / or a closure cover containing further valves is also formed on the upper side of the upper chamber.
  • the upper chamber 3 has fastening flanges 18 formed on an outer longitudinal side for holding the container 1.
  • the lower chamber 2 is laterally a hose connector 19 for the confluence of a ventilation line from a high point of the cooling system and at a recessed lower bulge 20 coaxially with each one hose connector 21 and 22 for the return from a heating device or for a filling and return line to the suction side of a coolant pump and a further mounting flange 18 are integrally formed.
  • the three plastic molded parts for the two chambers 2 and 3 and intermediate wall 4, including the molded parts can be molded in one piece in a way that is easy to manufacture, low construction costs are achieved with low weight and low costs for a relatively complicated container.
  • This container is also adaptable by using one or two valve-containing closure covers on one or both chambers to different designs of cooling systems in which the chambers 2 and 3 are switched differently to the system pressure of the cooling system, to one another and to the atmosphere. In any case, an air separation in the chamber 3 and thereby a complete ventilation of the chamber 2 is ensured via the overflow line 13.
  • the different connection of the two chambers 2 and 3 to one another can only be determined by the choice of the closure lid on the openings 7 and 17.
  • the design of the container 101 according to FIG. 4 has a first upper molded part for the upper chamber 3 and the filler neck 6, which is designed to match the one according to FIGS. 1 to 3. The same reference numbers are therefore used in this respect.
  • the hose connection piece 119 for the opening of the ventilation line is formed from a high point of the cooling system. This nozzle 119 opens into the inner section 9 of the filler neck 6.
  • a lower base molding 102 is fastened by welding, gluing or the like, which has a bottom 102' stiffened with ribs, a neck 106 'which extends the inner section 9 of the filler neck 6 downward, and one of the latter with a narrower shape Cross-section extending hose connector 122 for the filling and return line to the suction side of the coolant pump.
  • the interiors of the molded parts toward the parting plane 104 'and the outer sides and add-on parts can be molded in one piece by known mold partitions.
  • a filler neck 6 made as a separate plastic molded part can be tightly fastened, e.g. B. by welding or gluing. As a result, the shape of the filler neck 6 is facilitated without considerable additional construction work.
  • Other add-on parts can also be manufactured separately if required and connected to the chambers in a detachable or non-detachable manner without significantly impairing the advantages of the invention.

Description

Die Erfindung betrifft einen Behälter gemäß der Bauart nach dem Oberbegriff der Patentansprüche 1 bzw. 2.2. The invention relates to a container of the type according to the preamble of claims 1 and 2 respectively.

Bei einem bekannten Behälter dieser Bauart gemäß der DE-A 28 52 725 sind Einfüllstutzen, Überlaufleitung, Anschlußstutzen für Entlüftungsleitungen und Befülleitung sowie Verbindungsöffnungen in einer weiteren Zwischenwand, die eine Kammer zusätzlich unterteilt, mit den beiden Blechformteilen für die beiden Kammern mit der ersten Zwischenwand nicht einstückig und rationell als Kunststoff-Formteile herstellbar. Darüber hinaus ist dieser Behälter ausschließlich für Kühlsysteme vorgesehen und anwendbar, bei denen alle Kammern des Behälters den gleichen Druck aufweisen.In a known container of this type according to DE-A 28 52 725 filler neck, overflow line, connecting piece for ventilation lines and filling line as well as connection openings in a further partition, which additionally divides a chamber, with the two sheet metal parts for the two chambers with the first partition are not Can be produced in one piece and efficiently as molded plastic parts. In addition, this container is intended and applicable exclusively for cooling systems in which all the chambers of the container have the same pressure.

Die FR-A 2 484 533 beschreibt die Ausbildung des aus der DE-A 28 52 725 bekannten Behälters aus Kunststoff-Formteilen. An seinem möglichen Einsatzbereich in anderen als den oben beschriebenen Kühlsystemen ändert der Kunststoffaufbau jedoch nichts.FR-A 2 484 533 describes the formation of the container made of molded plastic parts known from DE-A 28 52 725. However, the plastic structure does not change its possible application in cooling systems other than those described above.

Die FR-A 2 272 858 beschreibt einen Kühler mit integriertem Vorratsbehälter für Fahrzeuge. Hierbei gelangt ein druckloser Vorratsbehälter zur Anwendung, der auf dem Wasserkasten des Kühlers aufgesetzt ist und mit diesem einstückig verbunden ist. Hierbei ist ein Vorratsraum im Wasserkasten funktionsnotwendig, da sonst die Kühlwasserröhrchen nicht vollständig mit Wasser gefüllt wären. Dadurch würde im Betrieb der Brennkraftmaschine ein Wasser-Luft-Gemisch zur Kühlung herangezogen, welches jedoch aus den bekannten Gründen keine effektive Kühlung gestattet.FR-A 2 272 858 describes a cooler with an integrated storage container for vehicles. Here, a pressureless storage container is used, which is placed on the water tank of the cooler and is integrally connected to it. Here, a storage room in the water tank is functionally necessary, since otherwise the cooling water tubes would not be completely filled with water. As a result, a water-air mixture would be used for cooling during operation of the internal combustion engine, but this does not allow effective cooling for the known reasons.

Dementsprechend zeigt diese Anordnung auch keinen Vorratsbehälter, welcher zwei separate Kammern aufweist. Darüber hinaus zeigt diese Entgegenhaltung aufgrund der Integration des Vorratsbehälters auf dem Kühlwasserkasten eines Kühlers keinen Anschluß für eine Nebenstromentlüftungsleitung von einem Hochpunkt des Kühlsystems und keine Befülleitung zur Saugseite einer Kühlmittelpumpe.Accordingly, this arrangement also does not show a storage container which has two separate chambers. Furthermore, due to the integration of the storage container on the cooling water tank of a cooler, this document shows no connection for a bypass ventilation line from a high point of the cooling system and no filling line to the suction side of a coolant pump.

Es ist Aufgabe der vorliegenden Erfindung, einen Behälter der bekannten Bauart so zu gestalten, daß - abgesehen von den funktionsbedingt lösbar anzubringenden Teilen, wie Verschlußdeckel mit Ventilen, Nachfülldeckel und Niveaugeberschalter - alle Bauteile, Anschlüsse und Öffnungen den die beiden Kammem bildenden Formteilen anformbar sind und daß dabei ein oder zwei Verschlußdeckel mit Ventilen einer bzw. beiden Kammern zugeordnet werden können, um in diesen den Druckaufbau nach Bedarf in bekannter Weise zu steuern.It is an object of the present invention to design a container of the known type so that - apart from the functionally releasable parts to be attached, such as closure caps with valves, refill caps and level switches - all components, connections and openings can be molded onto the molded parts forming the two chambers and that one or two caps with valves can be assigned to one or both chambers in order to control the pressure build-up as required in a known manner.

Eine erste Lösung der Aufgabe erreicht die Erfindung durch die kennzeichnenden Merkmale des Patentanspruchs 1. Durch die horizontale Teilung der beiden Kammern, den in vertikaler Ausformrichtung die obere Kammer durchdringenden Einfüllstutzen zur unteren Kammer und die Überlaufleitung zum Bodenbereich der oberen Kammer wird zusammen mit der einstückigen Anformung weiterer Bauteile an die die Kammern bildenden Formteile ein Zweikammer-Behälter geschaffen, der aus drei einstückigen Kunststoff-Formteilen rationell herstellbar und vielseitig anwendbar ist.The invention achieves a first solution to the problem by the characterizing features of patent claim 1. The horizontal division of the two chambers, the filler neck penetrating the upper chamber in the vertical shaping direction and the overflow line to the bottom region of the upper chamber together with the integral molding other components to the molded parts forming the chambers, a two-chamber container is created, which can be efficiently produced from three one-piece plastic molded parts and is versatile.

Eine zweite Lösung der Aufgabe nach den kennzeichnenden Merkmalen des Anspruches 2 weist lediglich zwei Formteile auf, wobei eine Kammer allein durch den Einfüllstutzen gebildet wird. Damit wird ein noch geringerer Bauaufwand ermöglicht. Die Merkmale des Anspruches 3 beinhalten eine vorteilhafte Weiterbildung der Lösung nach Anspruch 2. Eine weitere Abwandlung der Erfindung nach Anspruch 4 ermöglicht ohne wesentlichen Zusatzaufwand die getrennte Ausformung des Einfüllstutzens mit Überlaufleitung und dessen Befestigung in einer oben liegenden Öffnung der zweiten Kammer.A second solution to the problem according to the characterizing features of claim 2 has only two molded parts, one chamber being formed solely by the filler neck. This enables an even lower construction effort. The features of claim 3 include an advantageous further development of the solution according to claim 2. A further modification of the invention according to claim 4 enables the filler neck with overflow line to be shaped separately and attached in an overhead opening of the second chamber without significant additional effort.

Der erfindungsgemäße Behälter kann in seinen äußeren Abmessungen, in der Anordnung seiner Anschlüsse und seiner ebenfalls anformbaren Befestigungselemente so gestaltet werden, daß er gegen übliche Einkammerbehälter zur Verbesserung der Funktion des Kühlsystems an bereits im Einsatz befindlichen Brennkraftmaschinen einfach austauschbar ist. Ferner kann der Behälter in bekannter Weise mit einem Kühlerwasserkasten baulich vereinigt und dabei eines der Formteile des Behälters einstückig einem Kühlwasserkasten angeformt werden.The container of the invention can be designed in its outer dimensions, in the arrangement of its connections and its also moldable fastening elements so that it is easily interchangeable with conventional single-chamber containers to improve the function of the cooling system on internal combustion engines already in use. Furthermore, the container can be structurally combined in a known manner with a cooler water tank and one of the molded parts of the container can be integrally molded onto a coolant water tank.

In der Zeichnung ist die Erfindung anhand von zwei Ausführungsbeispielen dargestellt. Es zeigen :

  • Fig. 1 einen Volumen-Ausgleichs-Entlüftungs-und Vorrats-Behälter für das Kühlsystem von Brennkraftmaschinen in teilweise geschnittener Seitenansicht,
  • Fig. 2 den Behälter nach Fig. 1 in Draufsicht,
  • Fig. 3 den Behälter nach Figur 1 und 2 in Querschnitt und
  • Fig. 4 eine abgewandelte Ausbildung eines Behälters nach Fig. 1 im Querschnitt.
In the drawing, the invention is illustrated using two exemplary embodiments. Show it :
  • 1 is a partially balanced side view, a volume compensation vent and storage container for the cooling system of internal combustion engines,
  • 2 is a plan view of the container of FIG. 1,
  • Fig. 3 shows the container according to Figures 1 and 2 in cross section and
  • Fig. 4 shows a modified embodiment of a container according to Fig. 1 in cross section.

Ein Behälter 1 für die durch Temperatur-und Druckänderungen des Kühlmittels im Kühlsystem von Brennkraftmaschinen bedingten Volumenänderungen, für die Entlüftung des Kühlsystems und für einen Vorrat zum Ausgleich von Kühlmittelverbrauch durch Leckstellen und durch Auswurf über Überdruckventile besteht aus drei einstückigen Kunststoff-Formteilen, nämlich einer ersten unteren Kammer 2, einer zweiten oberen Kammer 3 und einer Zwischenwand 4. Diese Teile sind durch Schweißen, Kleben oder dergleichen zu einem einteiligen Behälter in zwei Teilungsebenen 4' unlösbar miteinander verbunden. Die Zwischenwand 4 ist in der Einbaulage des Behälters 1 horizontal angeordnet und weist eine Öffnung auf, durch die die untere Kammer 2 über einen der oberen Kammer 3 innen und oben außen angeformten Einfüllstutzen 6 mit dessen Einfüllöffnung 7 verbunden und zum Inneren der oberen Kammer abgedichtet ist. Die Einfüllöffnung 7 ist an einem äußeren Abschnitt 8 des Einfüllstutzens 6 angeordnet, der gegenüber dem inneren Abschnitt 9 einen erweiterten Innenquerschnitt sowie ein Außengewinde 10, eine obere Dichtfläche 11 und eine den unteren Abschnitt begrenzende innere Dichtfläche 12 für einen nicht dargestellten, Über-und Unterdruckventile enthaltenden Verschlußdeckel handelsüblicher Ausbildung aufweist.A container 1 for the volume changes caused by temperature and pressure changes of the coolant in the cooling system of internal combustion engines, for venting the cooling system and for a supply to compensate for coolant consumption due to leaks and by ejection via pressure relief valves consists of three one-piece plastic molded parts, namely a first one lower chamber 2, a second upper chamber 3 and an intermediate wall 4. These parts are permanently connected to one another by welding, gluing or the like to form a one-piece container in two parting planes 4 '. The intermediate wall 4 is arranged horizontally in the installed position of the container 1 and has an opening through which the lower chamber 2, via a filler neck 6 integrally formed on the inside and top outside of the upper chamber 3, with its fill Opening 7 is connected and sealed to the interior of the upper chamber. The filler opening 7 is arranged on an outer section 8 of the filler neck 6, which has an enlarged inner cross section compared to the inner section 9, as well as an external thread 10, an upper sealing surface 11 and an inner sealing surface 12 delimiting the lower section, for a pressure and vacuum valve, not shown Containing closure cover has commercial training.

Dem inneren Abschnitt 9 des Einfüllstutzens 6 ist an seiner in der oberen Kammer 3 angeordneten Außenseite eine Überlaufleitung 13 angeformt, die sich von einer oberen Mündung 14 in den äußeren Abschnitt 8 radial außerhalb der Dichtfläche 12 bis zu einer unteren Mündung 15 in den Bodenbereich der oberen Kammer 3 knapp über der Zwischenwand 4 erstreckt.The inner section 9 of the filler neck 6 is formed on its outside arranged in the upper chamber 3, an overflow line 13, which extends from an upper mouth 14 in the outer section 8 radially outside the sealing surface 12 to a lower mouth 15 in the bottom region of the upper Chamber 3 extends just above the partition 4.

Der oberen Kammer 3 ist an einem Hochpunkt ferner ein Schlauch-Anschlußstutzen 16 angeformt, der zum Anschluß eines Schlauches für eine atmosphärische Be- und Entlüftung und für einen Kühlmittel-Überlauf aus der oberen Kammer 3 dient. Der Oberseite der oberen Kammer ist ferner eine weitere Öffnung 17 für einen Befülldeckel, für einen Niveaugeberschalter und/oder einen weitere Ventile enthaltenden Verschlußdeckel angeformt. Ferner weist die obere Kammer 3 an einer Außenlängsseite angeformte Befestigungsflansche 18 zur Halterung des Behälters 1 auf.The upper chamber 3 is also formed at a high point, a hose connector 16, which is used to connect a hose for atmospheric ventilation and for a coolant overflow from the upper chamber 3. A further opening 17 for a filling cover, for a level sensor switch and / or a closure cover containing further valves is also formed on the upper side of the upper chamber. Furthermore, the upper chamber 3 has fastening flanges 18 formed on an outer longitudinal side for holding the container 1.

Der unteren Kammer 2 sind seitlich ein Schlauch-Anschlußstutzen 19 für die Einmündung einer Entlüftungsleitung von einem Hochpunkt des Kühlsystems sowie an einer vertieften unteren Ausbuchtung 20 gleichachsig zueiandner je ein Schlauch-Anschlußstutzen 21 und 22 für den Rücklauf aus einer Heizvorrichtung bzw. für eine Befüll- und Rücklauf-Leitung zur Saugseite einer Kühlmitttelpumpe und ein weiterer Befestigungsflansch 18 angeformt.The lower chamber 2 is laterally a hose connector 19 for the confluence of a ventilation line from a high point of the cooling system and at a recessed lower bulge 20 coaxially with each one hose connector 21 and 22 for the return from a heating device or for a filling and return line to the suction side of a coolant pump and a further mounting flange 18 are integrally formed.

Durch die fertigungsgünstig jeweils einteilig ausformbare Gestaltung der drei Kunststoff-Formteile für die beiden Kammern 2 und 3 und Zwischenwand 4 einschließlich der jeweils angeformten Bauteile wird ein geringer Bauaufwand mit geringem Gewicht und geringen Kosten für einen relativ kompliziert aufgebauten Behälter erreicht. Dieser Behälter ist zudem durch Verwendung eines oder zweier Ventile enthaltender Verschlußdeckel auf einem oder beiden Kammern verschiedenen Ausbildungen von Kühlsystemen anpaßbar, bei denen die Kammern 2 und 3 zum Systemdruck des Kühlsystems, gegeneinander und zur Atmosphäre hin unterschiedlich geschaltet sind. In jedem Fall ist über die Überlaufleitung 13 eine Luftabscheidung in der Kammer 3 und dadurch eine vollständige Entlüftung der Kammer 2 gewähleistet. Die unterschiedliche Schaltung der beiden Kammern 2 und 3 zueinander ist ausschließlich durch die Wahl der Verschlußdeckel auf den Öffnungen 7 und 17 bestimmbar.Due to the fact that the three plastic molded parts for the two chambers 2 and 3 and intermediate wall 4, including the molded parts, can be molded in one piece in a way that is easy to manufacture, low construction costs are achieved with low weight and low costs for a relatively complicated container. This container is also adaptable by using one or two valve-containing closure covers on one or both chambers to different designs of cooling systems in which the chambers 2 and 3 are switched differently to the system pressure of the cooling system, to one another and to the atmosphere. In any case, an air separation in the chamber 3 and thereby a complete ventilation of the chamber 2 is ensured via the overflow line 13. The different connection of the two chambers 2 and 3 to one another can only be determined by the choice of the closure lid on the openings 7 and 17.

Die Ausbildung des Behälters 101 nach Fig. 4 weist ein erstes oberes Formteil für die obere Kammer 3 und den Einfüllstutzen 6 auf, das mit demjenigen nach den Figuren 1 bis 3 übereinstimmend gestaltet ist. Es werden daher insoweit gleiche Bezugsziffern verwendet. Zusätzlich ist der Schlauch-Anschlußstutzen 119 für die Einmündung der Entlüftungsleitung von einem Hochpunkt des Kühlsystems angeformt. Dieser Stutzen 119 mündet in den inneren Abschnitt 9 des Einfüllstutzens 6.The design of the container 101 according to FIG. 4 has a first upper molded part for the upper chamber 3 and the filler neck 6, which is designed to match the one according to FIGS. 1 to 3. The same reference numbers are therefore used in this respect. In addition, the hose connection piece 119 for the opening of the ventilation line is formed from a high point of the cooling system. This nozzle 119 opens into the inner section 9 of the filler neck 6.

In der unten liegenden Teilungsebene 104' ist ein unteres Boden-Formteil 102 durch Schweißen, Kleben oder dergleichen befestigt, das einem mit Rippen versteiften Boden 102', einen den Innenabschnitt 9 des Einfüllstutzens 6 nach unten verlängernden Stutzen 106' und einen von letzterem mit engerem Querschnitt weiterführenden Schlauch-Anschlußstutzen 122 für die Befüll- und Rücklauf-Leitung zur Saugseite der Kühlmittelpumpe aufweist.In the division plane 104 'located below, a lower base molding 102 is fastened by welding, gluing or the like, which has a bottom 102' stiffened with ribs, a neck 106 'which extends the inner section 9 of the filler neck 6 downward, and one of the latter with a narrower shape Cross-section extending hose connector 122 for the filling and return line to the suction side of the coolant pump.

Auch bei der Ausbildung nach Fig. 4 sind die Innenräume der Formteile zur Teilungsebene 104' hin und die Außenseiten und Anbauteile durch bekannte Formteilungen einteilig ausformbar.4, the interiors of the molded parts toward the parting plane 104 'and the outer sides and add-on parts can be molded in one piece by known mold partitions.

Die lediglich zweiteilige Ausbildung mit einem vereinfachten unteren Formteil weist einen weiter verringerten Bauaufwand auf, ist jedoch in gleicher Weise vielseitig anwendhar wie die Ausbildung nach den Figuren 1 bis 3.The only two-part design with a simplified lower molded part has a further reduced construction effort, but is equally versatile in the same way as the design according to FIGS. 1 to 3.

In einer oben liegenden Öffnung 206 der zweiten oberen Kammer 3 kann gemäß Fig. 1 ein als gesondertes Kunststoff-Formteil hergestellter Einfüllstutzen 6 dicht befestigt sein, z. B. durch Schweißen oder Kleben. Dadurch wird die Ausformung des Einfüllstutzens 6 ohne erheblichen zusätzlichen Bauaufwand erleichtert. Auch andere Anbauteile können bei Bedarf gesondert hergestellt und mit den Kammern lösbar oder unlösbar verbunden sein, ohne die Vorteile der Erfindung wesentlich zu beeinträchtigen.In an overhead opening 206 of the second upper chamber 3, as shown in FIG. 1, a filler neck 6 made as a separate plastic molded part can be tightly fastened, e.g. B. by welding or gluing. As a result, the shape of the filler neck 6 is facilitated without considerable additional construction work. Other add-on parts can also be manufactured separately if required and connected to the chambers in a detachable or non-detachable manner without significantly impairing the advantages of the invention.

Claims (4)

1. A volume-compensating, venting and storage container (1) for the cooling-liquid system of internal combustion engines,
comprising a first chamber (2),
having a respective connection (19) for a bypass venting line from a high point of the cooling system and for a filling line (21, 22) to the side of a coolant pump, and also having a filling opening and an overflow line (13) coming from a high point of the chamber, and
comprising a second chamber (3),
which is separated by a partition (4) from the first chamber and has a base region into which the overflow line (13) from the first chamber (2) opens, and has additional connections (16) and/or openings (17), the moulded parts forming the chambers (2, 3) and the partition (4) each comprising a plastics moulded part and being connected to form a one-part container, characterised in that
the container (1) comprises three one-piece moulded parts, i. e. the walls of the first and second chambers (2, 3) and the partition (4),
the partition (4) divides the chambers (2 and 3) approximately horizontally and has an opening (6) which connects a top filling opening (7) to the first bottom chamber (2) via a filling nozzle (6) which is integrally formed on the moulded part constituting the walls of the second top chamber (3),
the overflow line (13) is integrally formed on the filling nozzle (6) and opens on the one hand into an externally-widened portion (8) of the filling nozzle (6) which is sealable by a cover and is upwardly removable from the mould, and on the other hand opens into the base region of the second top chamber (3), and
the connections (16, 19, 21, 22) and the other openings (17) for an additional closure cover, a filling cover, for atmospheric pressure compensation and/or for a level switch are integrally formed on the filling nozzle (6) and/or the moulded parts constituting the walls of the chambers (2, 3).
2. A volume-compensating, venting and storage container (101) for the cooling liquid system of internal combustion engines)
comprising a first chamber (9),
which comprises a respective connection (119, 122) for a bypass venting line from a high part of the cooling system and for a filling line to the suction side of a coolant pump, and also comprises a filling opening (7) and an overflow line (13) leading from a high point of the chamber, and
comprising a second chamber (3),
which is divided by a partition (6) from the first chamber, has a floor region into which the overflow line from the first chamber (16) opens, and comprises additional connections and/or openings (16, 17), the moulded parts constituting the chamber (9, 3) and the partition (6) being made from plastics moulded parts and connected to form a one-part container, characterised in that
the container comprises two one-piece moulded parts connected in a single parting plane,
the first chamber (9) is constructed as a filling nozzle (6),
the filling nozzle (6) has an upper outer portion constituting the filling opening (7), sealable by a cover and widened and releasable upwardly (8) from the mould, and
is formed with the second chamber (3) in a first moulded part removable from the mould in the direction of the horizontal parting plane (104') underneath,
the filling nozzle (6) is integrally formed with the overflow line (13) which opens on the one hand into the top portion (8) of the filling nozzle (6) and on the other hand into the base region of the second chamber (3),
in the parting plane (104') a second base moulded part (102) is connected to the filling nozzle (6) and to the second chamber (3) and closes it and has an opening (106') which connects the filling opening (7) to the coolant-pump connection (122) which is underneath and integrally formed on the second base moulded part (102), and
the connections (16, 119, 122) and the additional openings for an additional closure cover, for a filling cover, for atmospheric pressure compensation and/or for a level switch are integrally formed on the two moulded parts.
3. A container according to claim 2, characterised in that
the filling nozzle (6) in the base moulded part (102) is continued by an integrally-formed nozzle (106', 122) having the same and/or a smaller cross-section, and
constituting a first chamber downwards which increases the size of the filling nozzle (6) and/or forms the connection to the coolant pump.
4. A container according to any of claims 1 to 3, characterised in that the filling nozzle (6) and the overflow line (13) constitute a separate plastics moulded part and are secured in a top opening (206) in the second chamber (3).
EP85108810A 1984-08-16 1985-07-15 Volume compensation, venting and supply container for the liquid cooling system of an internal-combustion engine Expired EP0171623B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3430115A DE3430115C1 (en) 1984-08-16 1984-08-16 The volume compensation, the ventilation and storage of serving containers for the liquid cooling system of internal combustion engines
DE3430115 1984-08-16

Publications (3)

Publication Number Publication Date
EP0171623A2 EP0171623A2 (en) 1986-02-19
EP0171623A3 EP0171623A3 (en) 1987-05-06
EP0171623B1 true EP0171623B1 (en) 1989-12-13

Family

ID=6243174

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85108810A Expired EP0171623B1 (en) 1984-08-16 1985-07-15 Volume compensation, venting and supply container for the liquid cooling system of an internal-combustion engine

Country Status (4)

Country Link
US (1) US4723596A (en)
EP (1) EP0171623B1 (en)
JP (1) JPS6158914A (en)
DE (2) DE3430115C1 (en)

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Also Published As

Publication number Publication date
DE3574754D1 (en) 1990-01-18
JPS6158914A (en) 1986-03-26
EP0171623A2 (en) 1986-02-19
DE3430115C1 (en) 1986-01-30
US4723596A (en) 1988-02-09
EP0171623A3 (en) 1987-05-06

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