EP0215369B1 - Réservoir de compensation pour liquide de refroidissement - Google Patents

Réservoir de compensation pour liquide de refroidissement Download PDF

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Publication number
EP0215369B1
EP0215369B1 EP86112139A EP86112139A EP0215369B1 EP 0215369 B1 EP0215369 B1 EP 0215369B1 EP 86112139 A EP86112139 A EP 86112139A EP 86112139 A EP86112139 A EP 86112139A EP 0215369 B1 EP0215369 B1 EP 0215369B1
Authority
EP
European Patent Office
Prior art keywords
chamber
tank according
expansion chamber
filling
expansion
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
EP86112139A
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German (de)
English (en)
Other versions
EP0215369A2 (fr
EP0215369A3 (en
Inventor
Helmut Dobler
Siegfried Jenz
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.)
Mahle Behr GmbH and Co KG
Original Assignee
Behr GmbH and Co KG
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 Behr GmbH and Co KG filed Critical Behr GmbH and Co KG
Publication of EP0215369A2 publication Critical patent/EP0215369A2/fr
Publication of EP0215369A3 publication Critical patent/EP0215369A3/de
Application granted granted Critical
Publication of EP0215369B1 publication Critical patent/EP0215369B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F01P11/029—Expansion reservoirs

Definitions

  • the invention relates to an expansion tank of a coolant circuit of an internal combustion engine with a filler chamber for receiving coolant, an expansion chamber separated by means of a partition and a connecting line connecting an upper region of the filler chamber with a lower region of the expansion chamber.
  • Such a coolant expansion tank is known from DE-OS 28 52 725.
  • the container is divided into a filling chamber and an expansion chamber by means of a vertically arranged partition.
  • the upper area of the replenishment chamber is connected to the lower area of the expansion chamber via a line.
  • the fill chamber is filled with coolant up to a certain height. In the event of strong heating and thus volume expansion of the cooling liquid, it runs from the filling chamber via the line into the expansion chamber and is subsequently pulled back into the filling chamber by means of negative pressure when the cooling liquid subsequently cools down.
  • a line leads from the underside of the filling chamber of the known container to a suction pump which conveys the sucked-in coolant back into the cooling circuit.
  • the division of the known container into the filling chamber and expansion chamber ensures that the possibility of cavitation of the cooling liquid in the line leading to the pump, i.e. the possibility of the occurrence of steam bubbles due to the negative pressure generated by the pump, is reduced when the cooling liquid level in the filling tank is high.
  • the coolant level in the replenishment chamber drops to a minimum due to a loss of coolant, the risk of cavitation increases due to the reduced geodetic height in the line leading to the pump.
  • the object of the invention is to provide an expansion tank for coolant of the type mentioned in such a way that damage to the components to be cooled is largely excluded in any operating state, that is to say also in the event of loss of coolant.
  • This object is achieved in that the expansion chamber is arranged substantially below the filling chamber.
  • This arrangement ensures that even in the event of a loss of coolant, which results in a drop in the coolant level in the replenishment chamber, there is still coolant up to the level of the expansion chamber located under the replenishment chamber above the line leading to the pump and thus due to the still Relatively high geodetic height cavitation in the pipe is reduced.
  • the connecting line is formed at the connection point to the upper region of the filling chamber to form an air space, the highest point of which lies above the highest point of the filling chamber. It is also possible to form the connecting line at the connection point to the lower region of the expansion chamber into a collecting space, the lowest point of which lies below the lowest point of the expansion chamber.
  • a valve socket is located on the top of the container, which is connected to the expansion chamber by means of a channel and which can be closed by means of a valve cover designed as a pressure relief valve. If the pressure in the expansion chamber rises above a certain value, the pressure relief valve opens and limits the pressure in the entire cooling circuit due to the outflow of gas.
  • An expedient development of the invention provides a suction nozzle which is located on the underside of the container and which is connected to the filling chamber via a connection, in particular a depression formed by means of a slope. Coolant is drained from the replenishment chamber through this suction nozzle.
  • the expansion tank for cooling liquid shown in FIG. 1 mainly consists of a liquid or filling chamber 10 and an air or expansion chamber 11. Both chambers 10 and 11 are separated from one another by a horizontal partition wall 12 and lie one above the other.
  • An upper one Area 35 of the filling chamber 10 is connected via a connecting line 13 to a lower area 36 of the expansion chamber 11.
  • the connecting line 13 has an air space 37 at the point of connection with the upper region 35 of the filling chamber 10, the highest point of which is above the highest point of the filling chamber 10.
  • a filler neck 15 with a filler restriction 15 ' is attached, which can be closed with the aid of a filler cap 16.
  • a valve neck 18 is also formed on the top 41 of the expansion tank and can be closed by means of a valve cover 19.
  • the valve connector 18 is connected to the upper region of the expansion chamber 11 by means of a channel 21.
  • the valve cover 19 contains a pressure relief valve, so that after a certain pressure in the expansion chamber 11 is exceeded, this pressure relief valve opens and connects the channel 21 to an overflow line 20.
  • In the upper region 35 of the filling chamber 10 there are two inlet connections 25 through which cooling liquid is fed to the filling chamber.
  • a low-lying suction nozzle 26 for the filling chamber 10 is arranged on the underside of the expansion chamber 11 and thus on the underside 42 of the expansion tank.
  • the filling chamber 10 is expanded in the region of the suction nozzle 26 with the aid of a bevel 28 which runs from the partition 12 to the bottom 42 of the expansion tank to a recess 27 which leads to the suction nozzle arranged in the bottom 42.
  • FIG. 2 of the expansion tank of FIG. 1 shows the position of the filler cap 16, the Valve cover 19, the suction connector 26, the inlet connector 25 and the cut filling chamber 10 and connecting line 13.
  • the connecting line 13 is located on an outer wall 40, namely on a narrow side of the expansion tank and has a rectangular cross section.
  • a dividing line 30 can be seen in FIG. 2, in which a first shell 45 and a second shell 46 of the expansion tank are connected.
  • This dividing line 30 also divides the connecting line 13, which can be easily formed together with the associated shells.
  • the section of the connecting line 13 of FIG. 1 is section A of FIG. 2
  • the section of the channel 21 of FIG. 1 is section B of FIG. 2
  • the section of the connecting line 13 of FIG. 2 corresponds to the section C of FIG. 1.
  • FIG. 3 shows the narrow side of the expansion tank of FIGS. 1 and 2. From this figure it can be seen that the division joint 30 runs parallel to the connecting line 13, while the partition 12 is at right angles to this connecting line 13 and is therefore arranged horizontally. Likewise, the two inlet connections 25 are arranged in a horizontal position, while the filler connection 15, the valve connection 18 and the suction connection 26 are essentially vertical.
  • the inlet connections 25 are connected to the highest point of the heat exchanger and / or the highest point of the cooling jacket of the internal combustion engine and thus form a vent for the heat exchanger and the internal combustion engine.
  • the suction nozzle 26 is connected via a line to a pump, which sucks the coolant from the expansion tank and feeds it into the normal cooling circuit, which consists of the heat exchanger, a pump and the cooling jacket of the internal combustion engine.
  • the expansion tank is installed in the motor vehicle in such a way that the filler neck 15 and the valve stub 18 are accessible from above and the entire container is in a horizontal position.
  • cooling liquid is filled up to the filling limit in the filling chamber 10 of the expansion tank, so that there is sufficient air space in the filling chamber for receiving the expansion volume of the cooling liquid which arises as a result of heating at normal operating temperature.
  • the initial coolant level will increase as a result of heating and expansion, but no coolant will overflow into the expansion chamber 11 via the connecting line 13.
  • the cooling liquid heats up to such an extent due to the inadequate or non-existent cooling that the expansion causes the cooling liquid to flow via the connecting line 13 from the Filling chamber 10 overflows into the expansion chamber 11. Since the expansion chamber 11 is sealed off by the valve cover 19, the pressure in the expansion chamber 11 increases, so that after cooling the cooling liquid again due to the overpressure in the expansion chamber and the resulting negative pressure in the filling chamber 10, the cooling liquid from the expansion chamber 11 into the Filling chamber 10 is sucked back via the connecting line 13.
  • the collecting space 38 is provided, in which the cooling liquid present in the expansion chamber 11 can collect. Analogously, a certain amount of residual air remains in the air space 37 even when the entire filling chamber 10 is filled with cooling liquid again. This makes it possible that any gas bubbles rise from the cooling liquid 10 and can be excreted in the air space 37.
  • the one in the valve cover 19 opens Pressure relief valve so that gas or liquid can flow out via the overflow line 20 and the pressure is reduced again as a result. It is possible to combine the above-mentioned pressure relief valve with a vacuum valve, so that air is admitted into the expansion chamber 11 in the case of a negative pressure which arises in the expansion chamber 11 and which can arise, for example, when the cooling liquid cools, and thus pressure equalization takes place.
  • the coolant level in the replenishing chamber 10 drops due to a loss of coolant, the coolant level is sufficiently high as long as the depression 27 is filled with coolant. Only when the recess 27 no longer contains any coolant, that is to say there is no coolant in the entire expansion tank, is there a risk of bubbles forming in the coolant and thus a reduction in the cooling capacity.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Claims (14)

  1. Réservoir de compensation en une pièce d'un circuit de liquide de refroidissement d'un moteur à combustion, avec une chambre de remplissage (10) pour recevoir du liquide de refroidissement, une chambre d'expansion (11) séparée de la précédente par une paroi séparatrice (12), et une conduite de liaison (13) qui relie une région supérieure de la chambre de remplissage (10) à une région inférieure de la chambre d'expansion (11), caractérisé en ce que la chambre d'expansion (11) est disposé essentiellement en dessous de la chambre de remplissage (10).
  2. Réservoir de compensation selon la revendication 1, caractérisé en ce que la paroi séparatrice (12) entre la chambre de remplissage (10) et la chambre d'expansion (11) présente une allure essentiellement horizontale.
  3. Réservoir de compensation selon la revendication 1 ou 2, caractérisé en ce que la conduite de liaison (13) forme, au point de jonction avec la région supérieure (35) de la chambre de remplissage (10), un espace d'air (37) dont le point le plus haut se trouve audessus du point le plus haut de la chambre de remplissage (10).
  4. Réservoir de compensation selon l'une des revendications 1 à, 3, caractérisé en ce que la conduite de liaison (13) forme, au point de jonction avec la région inférieure (36) de la chambre d'expansion (11), un espace collecteur (38) dont le point le plus bas se trouve en dessous du point le plus bas de la chambre d'expansion (11).
  5. Réservoir de compensation selon l'une des revendications 1 à 4, caractérisé en ce que la conduite de liaison (13) est formée sur une paroi (40) du réservoir.
  6. Réservoir de compensation selon l'une des revendications 1 à 5, caractérisé en ce qu'une tubulure de remplissage (15) est montée sur le dessus (41) de la chambre de remplissage (10), et peut être fermée par un couvercle de remplissage (16).
  7. Réservoir de compensation selon l'une des revendications 1 à 6, caractérisé en ce qu'un raccord de soupape (18) est relié à la chambre d'expansion (11), et peut être fermé par un couvercle de soupape (19) réalisé sous la forme d'une soupape de surpression.
  8. Réservoir de compensation selon la revendication 7, caractérisé en ce que le raccord de soupape (18) se trouve sur le dessus (41) de la chambre de remplissage (10), et est raccordé à la chambre d'expansion (11) par un canal (21).
  9. Réservoir de compensation selon l'une des revendications 1 à 8, caractérisé en ce qu'au moins un branchement d'arrivée (25) de liquide de refroidissement est monté dans la région supérieure (35) de la chambre de remplissage (10).
  10. Réservoir de compensation selon l'une des revendications 1 à 9, caractérisé en ce qu'il est' prévu un branchement d'aspiration (26) de liquide de refroidissement, qui se trouve sur le dessous (42) de la chambre d'expansion (11) et qui est relié à la chambre de remplissage (10) par un renfoncement (27).
  11. Réservoir de compensation selon la revendication 10, caractérisé en ce que le renfoncement (27) est configuré à l'aide d'au moins un biais (28) qui s'étend depuis la paroi séparatrice (12) jusqu'au dessous (42) de la chambre d'expansion (11).
  12. Réservoir de compensation selon la revendication 10 ou 11, caractérisé en ce que le branchement d'aspiration (26) se trouve sur le bord du réservoir.
  13. Réservoir de compensation selon l'une des revendications 1 à 12, caractérisé en ce que le réservoir est constitué de deux coques, avec un joint de séparation (30) vertical, passant par la conduite de liaison (13).
  14. Réservoir de compensation selon l'une des revendications 1 à 13, caractérisé en ce que les coques sont réalisées sous forme de pièces en matière plastique moulée par injection, qui sont soudées l'une à l'autre dans la région du joint de séparation.
EP86112139A 1985-09-17 1986-09-02 Réservoir de compensation pour liquide de refroidissement Expired - Lifetime EP0215369B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853533094 DE3533094A1 (de) 1985-09-17 1985-09-17 Ausgleichsbehaelter fuer kuehlfluessigkeit
DE3533094 1985-09-17

Publications (3)

Publication Number Publication Date
EP0215369A2 EP0215369A2 (fr) 1987-03-25
EP0215369A3 EP0215369A3 (en) 1988-06-22
EP0215369B1 true EP0215369B1 (fr) 1991-09-11

Family

ID=6281156

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86112139A Expired - Lifetime EP0215369B1 (fr) 1985-09-17 1986-09-02 Réservoir de compensation pour liquide de refroidissement

Country Status (4)

Country Link
US (1) US4738228A (fr)
EP (1) EP0215369B1 (fr)
BR (1) BR8604420A (fr)
DE (2) DE3533094A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011122313A1 (de) 2011-12-23 2012-06-21 Daimler Ag Kühlmittel-Ausgleichsbehälter-System
EP3032064A1 (fr) 2014-12-10 2016-06-15 MAN Truck & Bus AG Reservoir compensateur pour les liquides de refroidissement de moteurs a combustion interne refroidis par liquide

Families Citing this family (20)

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FR2688449B1 (fr) * 1992-03-16 1994-06-17 Peugeot Circuit de liquide pour echangeur de chaleur associe a un moteur de vehicule automobile.
FR2745069B1 (fr) * 1996-02-20 1998-04-10 Valeo Thermique Moteur Sa Dispositif d'expansion a chambres multiples pour circuit de refroidissement/chauffage de vehicule
EP1260685B1 (fr) * 2001-05-23 2006-08-09 Mann + Hummel GmbH Réservoir du liquide de refroidissement d'un moteur à combustion interne
GB0318402D0 (en) * 2003-08-06 2003-09-10 Ford Global Tech Llc Cooling system expansion tank
US8092676B2 (en) * 2006-01-11 2012-01-10 Thermo Fisher Scientific Inc. Tank for a system that outputs liquid at a user-defined constant temperature
US7828048B2 (en) * 2006-01-11 2010-11-09 Randall Douglas Dickinson Tank for a system that outputs liquid at a user-defined constant temperature
DE102006032792A1 (de) * 2006-07-14 2008-01-17 Dr.Ing.H.C. F. Porsche Ag Vertikal geteilter Ausgleichsbehälter für Kühlflüssigkeit
DE102007054855A1 (de) * 2007-11-16 2009-05-28 Bayerische Motoren Werke Aktiengesellschaft Ausgleichsbehälter für wenigstens zwei Wärmeübertragungsmittelkreisläufe, Wärmeübertragungsmittelkreislauf sowie Kraftfahrzeug
US8038878B2 (en) * 2008-11-26 2011-10-18 Mann+Hummel Gmbh Integrated filter system for a coolant reservoir and method
US20100206882A1 (en) * 2009-02-13 2010-08-19 Wessels Timothy J Multi chamber coolant tank
CN104018928B (zh) * 2014-05-30 2016-05-11 东风商用车有限公司 一种汽车膨胀水箱
SE539423C2 (sv) 2015-07-02 2017-09-19 China-Euro Vehicle Tech Ab Storage tank
JP2018096321A (ja) * 2016-12-15 2018-06-21 トヨタ自動車株式会社 リザーブタンク
CN108518271A (zh) * 2018-03-22 2018-09-11 安徽江淮汽车集团股份有限公司 一种膨胀水壶
GB2575454B (en) * 2018-07-09 2022-02-16 Ford Global Tech Llc A Combined Reservoir and Degas Bottle
CN109184893B (zh) * 2018-11-22 2021-02-09 卡特彼勒S.A.R.L公司 发动机冷却系统和用于其中的箱体以及作业机械
DE102019115464A1 (de) * 2019-06-07 2020-12-10 Volkswagen Aktiengesellschaft Ausgleichbehälter für einen Fluidkreislauf
JP7471201B2 (ja) * 2020-11-16 2024-04-19 タイガースポリマー株式会社 リザーバタンク
EP4001606B1 (fr) * 2020-11-23 2023-06-21 Ningbo Geely Automobile Research & Development Co. Ltd. Agencement de refroidissement pour véhicule
JP7359794B2 (ja) * 2021-03-03 2023-10-11 トヨタ自動車株式会社 冷媒回路

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Publication number Priority date Publication date Assignee Title
US2408374A (en) * 1943-11-11 1946-10-01 Linde Air Prod Co Cooling system for internal-combustion engines
FR1269341A (fr) * 1960-07-02 1961-08-11 Renault Dispositif assurant l'étanchéité du circuit hydraulique de refroidissement des moteurs
US3757984A (en) * 1971-08-16 1973-09-11 Fre Bar Inc Cooling system container
FR2312645A1 (fr) * 1975-05-26 1976-12-24 Berliet Automobiles Circuit pour le refroidissement d'un moteur
DE2852725A1 (de) * 1978-12-06 1980-06-12 Sueddeutsche Kuehler Behr Ausgleichsbehaelter fuer kuehlfluessigkeit
US4480598A (en) * 1983-09-22 1984-11-06 William C. Neils Coolant recovery and de-aeration system for liquid-cooled internal combustion engines
DE3430115C1 (de) * 1984-08-16 1986-01-30 Bayerische Motoren Werke AG, 8000 München Dem Volumen-Ausgleich,der Entlueftung und Bevorratung dienender Behaelter fuer das Fluessigkeits-Kuehlsystem von Brennkraftmaschinen
DE3527700A1 (de) * 1985-08-02 1987-02-12 Iveco Magirus Betriebsmittelbehaelter in kraftfahrzeugen

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011122313A1 (de) 2011-12-23 2012-06-21 Daimler Ag Kühlmittel-Ausgleichsbehälter-System
EP3032064A1 (fr) 2014-12-10 2016-06-15 MAN Truck & Bus AG Reservoir compensateur pour les liquides de refroidissement de moteurs a combustion interne refroidis par liquide
DE102014018366A1 (de) 2014-12-10 2016-06-16 Man Truck & Bus Ag Ausgleichsbehälter für die Kühlflüssigkeit flüssigkeitsgekühlter Brennkraftmaschinen

Also Published As

Publication number Publication date
US4738228A (en) 1988-04-19
EP0215369A2 (fr) 1987-03-25
DE3533094A1 (de) 1987-03-26
EP0215369A3 (en) 1988-06-22
BR8604420A (pt) 1987-05-12
DE3681386D1 (de) 1991-10-17

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