EP3032064A1 - Compensating tank for the cooling liquid of liquid-cooled combustion engines - Google Patents
Compensating tank for the cooling liquid of liquid-cooled combustion engines Download PDFInfo
- Publication number
- EP3032064A1 EP3032064A1 EP15002877.7A EP15002877A EP3032064A1 EP 3032064 A1 EP3032064 A1 EP 3032064A1 EP 15002877 A EP15002877 A EP 15002877A EP 3032064 A1 EP3032064 A1 EP 3032064A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- air
- expansion tank
- tank
- filling
- container
- 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
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 9
- 239000000110 cooling liquid Substances 0.000 title claims abstract description 8
- 238000001816 cooling Methods 0.000 claims abstract description 34
- 239000002826 coolant Substances 0.000 claims abstract description 24
- 238000007789 sealing Methods 0.000 claims abstract description 5
- 239000012530 fluid Substances 0.000 claims description 3
- 238000013461 design Methods 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 238000009530 blood pressure measurement Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Images
Classifications
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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
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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
- F01P11/14—Indicating devices; Other safety devices
- F01P11/18—Indicating devices; Other safety devices concerning coolant pressure, coolant flow, or liquid-coolant level
-
- 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
- F01P11/0204—Filling
- F01P11/0209—Closure caps
- F01P11/0238—Closure caps with overpressure valves or vent valves
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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
- F01P11/0285—Venting devices
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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
- F01P11/04—Arrangements of liquid pipes or hoses
Definitions
- the invention relates to an expansion tank for the cooling liquid of a liquid-cooled machine, in particular an internal combustion engine of a vehicle according to the preamble of claim 1.
- FIG. 1 shows such a known expansion tank 10 in a highly schematic view.
- the surge tank 10 is usually mounted so that it represents the highest point in the cooling system.
- the expansion tank 10 has an inlet connection arranged in the lower region of the expansion tank 10 and an outlet connection for connecting the expansion tank 10 to the cooling circuit of the internal combustion engine (not shown in each case).
- the expansion tank 10 further has a filling nozzle 4 arranged in the upper region of the expansion tank, which has a lower edge 9 spaced from the expansion tank ceiling 14 for limiting the filling level.
- a filling nozzle 4 sealing valve 5 which serves to secure the cooling system against overpressure and over which the expansion tank 10 can be filled with the coolant 1.
- the maximum filling of the expansion tank 10 usually corresponds to a filling with a cold engine with coolant 1 to the lower edge 9 of the filling nozzle 4, as in FIG. 1 shown.
- Conventional expansion tank 10 have at maximum filling with coolant 1 a fixed air volume 2. If internal combustion engines with different cooling circuits to be equipped with the same expansion tank 10, this has the following disadvantages: In cooling circuits with low heat input is not a sufficient form. In cooling circuits with high heat input, however, the form pressure is deactivated via the valve 5, or it is ejected coolant. These disadvantages can be avoided by providing different surge tanks, which are each adapted to the specific cooling circuits in which they are used. However, this increases the number of variants and thus the development and component costs.
- the object of the invention is in particular to provide a surge tank, which is better adapted to the requirements of different cooling circuits.
- the invention is also based on the object of a cost-saving design of such a reservoir.
- the compensating container according to the invention for the cooling liquid of a liquid-cooled machine has in accordance with the prior art at least one inflow connection arranged in the lower region of the compensating container and an outflow connection for connecting the compensating container to a cooling circuit of the internal combustion engine.
- the surge tank further comprises a arranged in the upper region of the expansion tank filler neck, which has a spaced from a surge tank ceiling bottom to limit the level and at least one filling nozzle sealing valve for filling the surge tank and to secure the cooling system against overpressure.
- the liquid-cooled machine can in particular be a liquid-cooled internal combustion engine of a vehicle.
- One highlighted application concerns a marine vessel or commercial vehicle
- the stated objects are achieved in that a remaining at a maximum filling of the expansion tank with coolant remaining air volume in the expansion tank, d. H. is variably determinable.
- expansion tank can be adapted to different requirements of different cooling circuits only by changing the available volume for the air in the expansion tank.
- a low air volume can be set to build up a sufficiently high pre-pressure.
- a high volume of air can be adjusted so that too high a pre-pressure builds up or so that no coolant is ejected.
- the expansion tank with variable air volume can thus be used as a uniform same component in cooling circuits, which differ due to their nature, in particular their coolant heat input.
- a particular advantage of the invention is thus the increased flexibility in the admission pressure setting in the cooling circuits and the cost savings through standardization or variant reduction, since a component can be adapted for use in different cooling circuits or cooling systems.
- At least one air chamber hereinafter also referred to as an air pocket, can be provided for adjusting the remaining volume of air in the expansion tank, comprising an air inlet opening lying in the interior of the expansion tank above the lower edge of the filling nozzle, which are opened and closed with an associated closure device can.
- the arrangement of the outlet opening above the lower limit of the filling nozzle always ensures the same maximum filling when filling the expansion tank with coolant.
- one or more air pockets can be provided, which can be brought respectively with the associated closure device (closure member) in fluid communication with the base gas volume of the surge tank to increase the gas volume in the expansion tank.
- closure device closure member
- the air pocket is closed, so that the available gas volume is not increased.
- the at least one air chamber can be arranged on the inside in the upper region of the expansion tank.
- the at least one air chamber may also be arranged outside of the expansion tank and be connected via a hose or pipe to the upper region of the expansion tank.
- the expansion tank can have at least two air chambers.
- the number and volume of the air chambers may be determined depending on the desired air volume graduation.
- One possibility of erfindungsmä touch realization provides that the internal volume of the air chambers is designed to vary in size. However, the internal volume of the air chambers can also be made the same size.
- the closure device associated with an air chamber can be designed as a closure screw, a closure cover or a flap. This allows a cost effective design variant to manually adjust the available volume for the air in the expansion tank.
- the closure device can be designed as a check valve, as a spring-loaded valve or as a pneumatically or electrically actuated valve. This offers the advantage that the opening and closing of the air chambers can be pressure-dependent and / or automated, in particular during operation of the cooling circuit.
- the air inlet opening of the at least one air chamber so that no coolant can enter the at least one air chamber during operation of the expansion tank when it is open.
- a separate channel guide and / or a spray cover is provided for this purpose.
- Another aspect of the invention relates to a utility vehicle or vessel having a surge tank as disclosed herein.
- compensation container 20 and 30 is located in the additionally provided two air pockets 6, each having an associated closure member 7, with which each air pocket 6 can be selectively opened or closed.
- an air pocket 6 is in fluid communication with the base gas volume of the surge tank 20 and 30.
- Each of the air pockets 6 has an air inlet opening 8, which lies above the lower edge 9 of the filling nozzle 4 in the upper inner region of the surge tank and closed with the closure member 7 can.
- the closure member 7 is designed as a screw plug.
- the expansion tank 30 further includes, as already stated above, arranged in the upper region of the expansion tank 30 filling nozzle 4, which has a spaced from the surge tank ceiling 14 lower edge 9 for limiting the level, and a filling nozzle 4 sealing Valve 5, which serves to secure the cooling system against overpressure and over which the expansion tank 30 can be filled with the coolant 1. Below the valve 5, an overflow pipe 16 is arranged, through which coolant can flow when the valve 5 is opened. In the expansion tank 30, a connection 15 for a level sensor for level measurement and a port 17 for the form pressure measurement are also provided.
- a baffle element is provided to improve the air bubble separation, which is preferably designed as a partition wall 13.
- a partition has the function to change the flow direction of the liquid and to increase the flow path of the coolant in the expansion tank in order to separate as much air.
- the two air chambers 6 are provided below the surge tank cover 14 in the upper region of the surge tank 30 on the opposite side of the valve 4, the air inlet opening 8 can be closed or opened with a screw plug 7.
- the screw head protrudes from the top of the surge tank 30 and can be operated from the outside.
- the air chambers 6 can be opened to vary the volume of the air in the expansion tank available in the interior of the expansion tank and optimally adapted to the present cooling circuit.
- the required air volume is first determined as a function of the coolant expansion, the required admission pressure and the opening pressure of the valve 5.
- the required air volume is adjusted in the expansion tank by the base volume, d. h., All air pockets 6 are closed, or possibly by the base volume and the determined number of required air pockets 6, if an increased volume of air was determined.
- the required number of air pockets 6 is then possibly opened by means of the screw plug 7, that is connected fluidly to the base volume.
- the cooling circuit is then filled for the first filling with coolant to the lower edge 9 of the filling nozzle 4.
- the engine is subsequently operated until the cooling circuit has been completely vented in order to remove any remaining air bubbles from the cooling circuit.
- coolant is refilled with a cold engine, again up to the lower edge 9 of the filling nozzle 4.
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- 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)
- Loading And Unloading Of Fuel Tanks Or Ships (AREA)
Abstract
Die Erfindung betrifft einen Ausgleichsbehälter für die Kühlflüssigkeit einer flüssigkeitsgekühlten Maschine, insbesondere eines maschinenbetriebenen Wasserfahrzeugs oder eines Nutzfahrzeugs. Der Ausgleichbehälter (30) umfasst mindestens einen im unteren Bereich des Ausgleichsbehälters (30) angeordneten Zufluss (11) - und einen Abflussanschluss (12) zur Verbindung des Ausgleichsbehälters (20; 30) mit einem Kühlkreislauf der Brennkraftmaschine; einen im oberen Bereich des Ausgleichsbehälters angeordneten Befüllstutzen (4), der zur Begrenzung des Füllstandes eine von einer Ausgleichsbehälterdecke beabstandete Unterkante (9) aufweist; mindestens ein den Befüllstutzen (4) abdichtendes Ventil (5) zur Befüllung des Ausgleichsbehälters (30) und zur Sicherung des Kühlsystems gegen Überdruck. Ferner ist ein bei einer maximalen Befüllung des Ausgleichsbehälters (30) mit Kühlflüssigkeit verbleibendes Luftvolumen (2) im Ausgleichsbehälter (30) einstellbar.The invention relates to an expansion tank for the cooling liquid of a liquid-cooled machine, in particular a machine-operated watercraft or a commercial vehicle. The expansion tank (30) comprises at least one inlet (11) arranged in the lower region of the expansion tank (30) and an outlet connection (12) for connecting the expansion tank (20; 30) to a cooling circuit of the internal combustion engine; a filling nozzle (4) arranged in the upper region of the compensating container and having a lower edge (9) spaced from a compensating container cover for limiting the filling level; at least one of the filling nozzle (4) sealing valve (5) for filling the surge tank (30) and to secure the cooling system against overpressure. Furthermore, a volume of air (2) remaining with a maximum filling of the expansion tank (30) with coolant is adjustable in the expansion tank (30).
Description
Die Erfindung betrifft einen Ausgleichsbehälter für die Kühlflüssigkeit einer flüssigkeitsgekühlten Maschine, insbesondere einer Brennkraftmaschine eines Fahrzeugs gemäß dem Oberbegriff des Anspruchs 1.The invention relates to an expansion tank for the cooling liquid of a liquid-cooled machine, in particular an internal combustion engine of a vehicle according to the preamble of
Aus der Praxis sind Ausgleichsbehälter für die Kühlflüssigkeit der eingangs genannten Art bekannt, die der Aufnahme der expandierenden Kühlflüssigkeit dienen.
Im Betrieb stellt sich dann durch die Erwärmung und dadurch bedingte Ausdehnung des Kühlmittels ein Vordruck im Luftvolumen 2 des Ausgleichsbehälters 10 ein. Über das Ventil 5 im Ausgleichsbehälterverschlussdeckel erfolgt ein Druckausgleich im Kühlsystem. Eine Erhöhung der Kühlmitteltemperatur führt zu einem Druckanstieg im Kühlsystem, da sich das Kühlmittel ausdehnt. Dadurch steigt der Druck im Ausgleichsbehälter 10 an, worauf sich das Überdruckventil 5 im Verschlussdeckel öffnet und Luft und evtl. auch Kühlmittel entweichen lässt. Bei Normalisierung der Kühlmitteltemperatur entsteht ein Unterdruck im Kühlsystem. Kühlmittel wird aus dem Behälter 10 zurückgesaugt. Hierdurch entsteht im Behälter 10 ebenfalls ein Unterdruck. Folglich öffnet sich das Unterdruckausgleichsventil im Verschlussdeckel des Behälters 10. Luft strömt in den Behälter 10, bis ein Druckausgleich erreicht ist. Mit dem Bezugszeichen 3 ist die Außenhaut bzw. Außenwandung des Ausgleichsbehälters 30 bezeichnet.In operation, then by the heating and consequent expansion of the coolant, a form in the
Weitere aus dem Stand der Technik bekannte Ausgleichsbehälter sind beispielsweise aus der
Herkömmliche Ausgleichsbehälter 10 haben bei maximaler Befüllung mit Kühlmittel 1 ein fest definiertes Luftvolumen 2. Wenn Brennkraftmaschinen mit unterschiedlichen Kühlkreisläufen mit dem gleichen Ausgleichsbehälter 10 ausgestattet werden sollen, hat dies die folgenden Nachteile zur Folge: In Kühlkreisläufen mit geringem Wärmeeintrag stellt sich kein ausreichender Vordruck ein. In Kühlkreisläufen mit hohem Wärmeeintrag wird dagegen der Vordruck über das Ventil 5 abgesteuert, bzw. es wird Kühlmittel ausgeworfen. Diese Nachteile können durch Bereitstellung unterschiedlicher Ausgleichsbehälter vermieden werden, die jeweils an die speziellen Kühlkreisläufe, in denen sie eingesetzt werden, angepasst sind. Dadurch erhöhen sich jedoch die Variantenanzahl und damit die Entwicklungs- und Bauteilekosten.
Es ist somit eine Aufgabe der Erfindung, einen verbesserten Ausgleichsbehälter bereitzustellen, mit dem Nachteile herkömmlicher Ausgleichsbehälter vermieden werden können. Die Aufgabe der Erfindung ist es insbesondere, einen Ausgleichsbehälter bereitzustellen, der besser an die Anforderungen unterschiedlicher Kühlkreisläufe anpassbar ist. Der Erfindung liegt ferner die Aufgabe einer kostensparenderen Gestaltung eines solchen Ausgleichsbehälters zugrunde.It is therefore an object of the invention to provide an improved surge tank, can be avoided with the disadvantages of conventional surge tank. The object of the invention is in particular to provide a surge tank, which is better adapted to the requirements of different cooling circuits. The invention is also based on the object of a cost-saving design of such a reservoir.
Diese Aufgaben werden durch einen Ausgleichsbehälter mit den Merkmalen des Hauptanspruchs gelöst. Vorteilhafte Ausführungsformen und Anwendungen der Erfindung sind Gegenstand der abhängigen Ansprüche und werden in der folgenden Beschreibung unter teilweiser Bezugnahme auf die Figuren näher erläutert.These objects are achieved by a surge tank having the features of the main claim. Advantageous embodiments and applications of the invention are the subject matter of the dependent claims and are explained in more detail in the following description with partial reference to the figures.
Der erfindungsgemäße Ausgleichsbehälter für die Kühlflüssigkeit einer flüssigkeitsgekühlten Maschine weist in Übereinstimmung mit dem Stand der Technik mindestens einen im unteren Bereich des Ausgleichsbehälters angeordneten Zuflussanschluss und einen Abflussanschluss zur Verbindung des Ausgleichsbehälters mit einem Kühlkreislauf der Brennkraftmaschine auf. Der Ausgleichsbehälter umfasst ferner einen im oberen Bereich des Ausgleichsbehälters angeordneten Befüllstutzen, der zur Begrenzung des Füllstandes eine von einer Ausgleichsbehälterdecke beabstandete Unterkante aufweist sowie mindestens ein den Befüllstutzen abdichtendes Ventil zur Befüllung des Ausgleichsbehälters und zur Sicherung des Kühlsystems gegen Überdruck. Die flüssigkeitsgekühlte Maschine kann insbesondere eine flüssigkeitsgekühlte Brennkraftmaschine eines Fahrzeugs sein. Eine hervorgehobenen Anwendung betrifft ein maschinenbetriebenes Wasserfahrzeug oder ein NutzfahrzeugsThe compensating container according to the invention for the cooling liquid of a liquid-cooled machine has in accordance with the prior art at least one inflow connection arranged in the lower region of the compensating container and an outflow connection for connecting the compensating container to a cooling circuit of the internal combustion engine. The surge tank further comprises a arranged in the upper region of the expansion tank filler neck, which has a spaced from a surge tank ceiling bottom to limit the level and at least one filling nozzle sealing valve for filling the surge tank and to secure the cooling system against overpressure. The liquid-cooled machine can in particular be a liquid-cooled internal combustion engine of a vehicle. One highlighted application concerns a marine vessel or commercial vehicle
Gemäß allgemeinen Gesichtspunkten der Erfindung werden die genannten Aufgaben dadurch gelöst, dass ein bei einer maximalen Befüllung des Ausgleichsbehälters mit Kühlflüssigkeit verbleibendes Luftvolumen im Ausgleichsbehälter einstellbar, d. h. variabel festlegbar, ist.According to general aspects of the invention, the stated objects are achieved in that a remaining at a maximum filling of the expansion tank with coolant remaining air volume in the expansion tank, d. H. is variably determinable.
Dies bietet den Vorteil, dass der Ausgleichsbehälter lediglich durch Veränderung des verfügbaren Volumens für die Luft im Ausgleichsbehälter an unterschiedliche Anforderungen verschiedener Kühlkreise angepasst werden kann.This offers the advantage that the expansion tank can be adapted to different requirements of different cooling circuits only by changing the available volume for the air in the expansion tank.
In Kühlkreisläufen mit geringem Wärmeeintrag kann ein niedriges Luftvolumen eingestellt werden, damit sich ein ausreichend hoher Vordruck aufbaut. In Kühlkreisläufen mit hohem Wärmeeintrag kann dagegen ein hohes Luftvolumen eingestellt werden, damit sich kein zu hoher Vordruck aufbaut bzw. damit kein Kühlmittel ausgeworfen wird.In cooling circuits with low heat input, a low air volume can be set to build up a sufficiently high pre-pressure. In cooling circuits with high heat input, on the other hand, a high volume of air can be adjusted so that too high a pre-pressure builds up or so that no coolant is ejected.
Der Ausgleichsbehälter mit variablem Luftvolumen kann somit als einheitlich gleiches Bauteil in Kühlkreisläufen eingesetzt werden, welche sich aufgrund ihrer Beschaffenheit, insbesondere ihres Kühlmittelwärmeeintrags, unterscheiden. Ein besonderer Vorzug der Erfindung ist somit die erhöhte Flexibilität bei der Vordruckeinstellung in den Kühlkreisläufen und die Kostenersparnis durch Vereinheitlichung bzw. Variantenreduktion, da ein Bauteil zum Einsatz in unterschiedlichen Kühlkreisläufen bzw. Kühlsystemen angepasst werden kann.The expansion tank with variable air volume can thus be used as a uniform same component in cooling circuits, which differ due to their nature, in particular their coolant heat input. A particular advantage of the invention is thus the increased flexibility in the admission pressure setting in the cooling circuits and the cost savings through standardization or variant reduction, since a component can be adapted for use in different cooling circuits or cooling systems.
Gemäß einer bevorzugten Ausführungsform der Erfindung kann zur Einstellbarkeit des verbleibenden Luftvolumens im Ausgleichsbehälter mindestens eine Luftkammer, nachfolgend auch als Lufttasche bezeichnet, vorgesehen sein, aufweisend eine im Innenraum des Ausgleichsbehälters oberhalb der Unterkante des Befüllstutzens liegende Lufteintrittsöffnung, welche mit einer zugeordneten Verschlusseinrichtung geöffnet und verschlossen werden kann. Durch die Anordnung der Austrittsöffnung oberhalb der Untergrenze des Befüllstutzens wird bei Befüllung des Ausgleichsbehälters mit Kühlflüssigkeit immer die gleiche Maximalbefüllung sichergestellt.According to a preferred embodiment of the invention, at least one air chamber, hereinafter also referred to as an air pocket, can be provided for adjusting the remaining volume of air in the expansion tank, comprising an air inlet opening lying in the interior of the expansion tank above the lower edge of the filling nozzle, which are opened and closed with an associated closure device can. The arrangement of the outlet opening above the lower limit of the filling nozzle always ensures the same maximum filling when filling the expansion tank with coolant.
Mit anderen Worten können zur Ausbildung eines veränderbaren Volumens für die Luft oder allgemein eines Gases im Ausgleichsbehälter eine oder mehrere Lufttaschen vorgesehen sein, die jeweils mit der zugeordneten Verschlusseinrichtung (Verschlussorgan) in Fluidverbindung mit dem Basisgasvolumen des Ausgleichsbehälters gebracht werden können, um das Gasvolumen im Ausgleichsbehälter zu erhöhen. In der Schließstellung des Verschlussorgans ist die Lufttasche verschlossen, so dass das zur Verfügung stehende Gasvolumen nicht erhöht ist.In other words, to form a variable volume for the air or generally a gas in the surge tank one or more air pockets can be provided, which can be brought respectively with the associated closure device (closure member) in fluid communication with the base gas volume of the surge tank to increase the gas volume in the expansion tank. In the closed position of the closure member, the air pocket is closed, so that the available gas volume is not increased.
Die mindestens eine Luftkammer kann innenseitig im oberen Bereich des Ausgleichsbehälters angeordnet sein. Gemäß einer weiteren Variante kann die mindestens eine Luftkammer auch außerhalb vom Ausgleichsbehälter angeordnet sein und über eine Schlauch- oder Rohrleitung mit dem oberen Bereich des Ausgleichsbehälters verbunden sein. Diese Variante bieten den Vorzug einer modularen Bauweise.The at least one air chamber can be arranged on the inside in the upper region of the expansion tank. According to a further variant, the at least one air chamber may also be arranged outside of the expansion tank and be connected via a hose or pipe to the upper region of the expansion tank. This variant offers the advantage of a modular design.
Zur Erhöhung der Flexibilität bei der Vordruckeinstellung in den Kühlkreisläufen kann der Ausgleichsbehälter mindestens zwei Luftkammern aufweisen. Die Anzahl und das Volumen der Luftkammern können in Abhängigkeit von der gewünschten Luftvolumenabstufung festgelegt sein. Eine Möglichkeit der erfindungsmäßen Realisierung sieht vor, dass das Innenvolumen der Luftkammern unterschiedlich groß ausgeführt ist. Das Innenvolumen der Luftkammern kann jedoch auch gleich groß ausgeführt sein.To increase the flexibility in the admission pressure setting in the cooling circuits, the expansion tank can have at least two air chambers. The number and volume of the air chambers may be determined depending on the desired air volume graduation. One possibility of erfindungsmäßen realization provides that the internal volume of the air chambers is designed to vary in size. However, the internal volume of the air chambers can also be made the same size.
Die einer Luftkammer zugeordnete Verschlusseinrichtung kann als eine Verschlussschraube, ein Verschlussdeckel oder eine Klappe ausgeführt sein. Dies ermöglicht eine kostengünstige Ausführungsvariante, um das verfügbare Volumen für die Luft im Ausgleichsbehälter manuell einzustellen.The closure device associated with an air chamber can be designed as a closure screw, a closure cover or a flap. This allows a cost effective design variant to manually adjust the available volume for the air in the expansion tank.
Gemäß einer weiteren Variante kann die Verschlusseinrichtung als Rückschlagventil, als federbelastetes Ventil oder als pneumatisch oder elektrisch angesteuertes Ventil ausgeführt sein. Die bietet den Vorteil, dass das Öffnen und Verschließen der Luftkammern druckabhängig und/oder automatisiert, insbesondere im laufenden Betrieb des Kühlkreislaufes, erfolgen kann.According to a further variant, the closure device can be designed as a check valve, as a spring-loaded valve or as a pneumatically or electrically actuated valve. This offers the advantage that the opening and closing of the air chambers can be pressure-dependent and / or automated, in particular during operation of the cooling circuit.
Um ein Eintreten von Kühlflüssigkeit in die wenigstens eine Luftkammern zu verhindern, ist es vorteilhaft, die Lufteintrittsöffnung der wenigstens einen Luftkammer so anzuordnen, dass im Betrieb des Ausgleichsbehälters kein Kühlmittel in die wenigstens eine Luftkammer eintreten kann, wenn diese geöffnet ist. Gemäß einer weiteren Variante ist hierzu eine separate Kanalführung und/oder eine Spritzblende vorgesehen.In order to prevent the entry of cooling liquid into the at least one air chambers, it is advantageous to arrange the air inlet opening of the at least one air chamber so that no coolant can enter the at least one air chamber during operation of the expansion tank when it is open. According to a further variant, a separate channel guide and / or a spray cover is provided for this purpose.
Ein weiterer Aspekt der Erfindung betrifft ein Nutzfahrzeug oder ein Schiff mit einem Ausgleichsbehälter wie hierin offenbart.Another aspect of the invention relates to a utility vehicle or vessel having a surge tank as disclosed herein.
Die zuvor beschriebenen bevorzugten Ausführungsformen und Merkmale der Erfindung sind beliebig miteinander kombinierbar. Weitere Einzelheiten und Vorteile der Erfindung werden im Folgenden unter Bezug auf die beigefügten Zeichnungen beschrieben. Es zeigen:
Figur 1- eine stark schematisierte Ansicht eines aus dem Stand der Technik bekannten Ausgleichsbehälters;
Figur 2- eine stark schematisierte Ansicht eines Ausgleichsbehälters gemäß einer Ausführungsform der Erfindung; und
Figur 3- eine stark schematisierte Ansicht eines Ausgleichsbehälters gemäß einer weiteren Ausführungsform der Erfindung.
- FIG. 1
- a highly schematic view of a known from the prior art expansion tank;
- FIG. 2
- a highly schematic view of a surge tank according to an embodiment of the invention; and
- FIG. 3
- a highly schematic view of a surge tank according to another embodiment of the invention.
Gleiche oder funktional äquivalente Elemente sind in allen Figuren mit denselben Bezugszeichen bezeichnet. Zur Vermeidung von Wiederholungen wird hierbei hinsichtlich der Funktionsweise der Teile 1 bis 5 und 9 der
Die Besonderheit der in den
Die in
Im unteren Innenbereich des Ausgleichbehälters 30 ist zur Verbesserung der Luftblasenabscheidung ein Prallelement vorgesehen, das vorzugsweise als Trennwand 13 ausgebildet ist. Eine derartige Trennwand hat die Funktion, die Strömungsrichtung der Flüssigkeit zu verändern und die Fließstrecke des Kühlmittels im Ausgleichsbehälter zu erhöhen, um möglichst viel Luft abzuscheiden.In the lower inner region of the
Wie vorstehend bereit erwähnt, sind unterhalb der Ausgleichbehälterdecke 14 im oberen Bereich des Ausgleichsbehälters 30 auf der dem Ventil 4 gegenüberliegenden Seite die zwei Luftkammern 6 vorgesehen, deren Lufteintrittsöffnung 8 jeweils mit einer Verschlussschraube 7 verschlossen oder geöffnet werden kann. Der Schraubenkopf ragt hierbei aus der Oberseite des Ausgleichbehälters 30 heraus und kann von außen betätigt werden. Durch Verstellen der Verschlussschrauben 7 können die Luftkammern 6 geöffnet werden, um das im Innern des Ausgleichbehälters verfügbare Volumen für die Luft im Ausgleichbehälter zu variieren und an den vorliegenden Kühlkreislauf optimal anzupassen.As already mentioned above, the two
Nachfolgend wird beispielhaft ein Vorgehen beschrieben, um den Ausgleichsbehälter durch Einstellen des verfügbaren Luftvolumens an einen Kühlkreislauf anzupassen, z. B. im Rahmen der Installation des Ausgleichsbehälters 6 im Fahrzeug. Hierbei wird zunächst das benötigte Luftvolumen abhängig von der Kühlmittelausdehnung, dem geforderten Vordruck und dem Öffnungsdruck des Ventils 5 ermittelt. Das benötigte Luftvolumen wird im Ausgleichsbehälter durch das Basisvolumen eingestellt, d. h., alle Lufttaschen 6 sind geschlossen, oder ggf. durch das Basisvolumen und die ermittelte Anzahl an benötigten Lufttaschen 6, falls ein erhöhtes Luftvolumen ermittelt wurde.The following is an example of a procedure described to adjust the expansion tank by adjusting the available volume of air to a cooling circuit, for. As part of the installation of the
Die benötigte Anzahl von Lufttaschen 6 wird dann ggf. mittels der Verschlussschraube 7 geöffnet, d. h. fluidisch mit dem Basisvolumen verbunden. Der Kühlkreislauf wird dann zur Erstbefüllung mit Kühlmittel bis zur Unterkante 9 des Befüllstutzens 4 gefüllt. Der Motor wird nachfolgend betrieben bis der Kühlkreislauf vollständig entlüftet ist, um alle evtl. noch vorhanden Luftblasen aus dem Kühlkreislauf zu entfernen. Danach wird bei kaltem Motor Kühlmittel nachgefüllt, wiederum bis zur Unterkante 9 des Befüllstutzens 4. Anschließend wird der Vordruck über den Anschluss 17 im realen Motorbetrieb gemessen, um die Funktionsweise des Ausgleichsbehälters 30 zu überprüfen. Wenn sich ein zu hoher Vordruck einstellt bzw. wenn es zu früh zum Abblasen über das Ventil 5 kommt, kann eine weitere Lufttasche 6 geöffnet werden. Wenn sich ein zu niedriger Vordruck einstellt, kann eine Lufttasche 6 geschlossen werden. Dies bietet den Vorteil, dass der Ausgleichsbehälter 30 lediglich durch Veränderung des verfügbaren Volumens für die Luft im Ausgleichsbehälter an den speziellen Kühlkreislauf angepasst werden kann.The required number of
Obwohl die Erfindung unter Bezugnahme auf bestimmte Ausführungsbeispiele beschrieben worden ist, ist es für einen Fachmann ersichtlich, dass verschiedene Änderungen ausgeführt werden können und Äquivalente als Ersatz verwendet werden können, ohne den Bereich der Erfindung zu verlassen. Zusätzlich können viele Modifikationen ausgeführt werden, ohne den zugehörigen Bereich zu verlassen. Folglich soll die Erfindung nicht auf die offenbarten Ausführungsbeispiele begrenzt sein, sondern soll alle Ausführungsbeispiele umfassen, die in den Bereich der beigefügten Patentansprüche fallen. Insbesondere beansprucht die Erfindung auch Schutz für den Gegenstand und die Merkmale der Unteransprüche unabhängig von den in Bezug genommenen Ansprüchen.Although the invention has been described with reference to particular embodiments, it will be apparent to those skilled in the art that various changes may be made and equivalents may be substituted for without departing from the scope of the invention. In addition, many modifications can be made without leaving the associated area. Accordingly, the invention should not be limited to the disclosed embodiments, but should include all embodiments which fall within the scope of the appended claims. In particular, the invention also claims protection of the subject matter and the features of the subclaims independently of the claims referred to.
- 11
- Kühlmittelcoolant
- 22
- Luftvolumenair volume
- 33
- Außenwandungouter wall
- 44
- Befüllstutzenfilling union
- 55
- VentilValve
- 66
- Luftkammerair chamber
- 77
- Verschlusseinrichtungclosure device
- 88th
- LufteintrittsöffnungAir inlet opening
- 99
- Unterkantelower edge
- 1010
- Ausgleichsbehältersurge tank
- 1111
- Zuflussanschlussinlet connection
- 1212
- Abflussanschlussoutflow
- 1313
- Trennwandpartition wall
- 1414
- AusgleichsbehälterdeckeReservoirs ceiling
- 1515
- Anschluss für NiveausondeConnection for level probe
- 1616
- ÜberlaufrohrOverflow pipe
- 1717
- Anschluss für VordruckmessungConnection for pre-pressure measurement
- 2020
- Ausgleichsbehältersurge tank
- 3030
- Ausgleichsbehältersurge tank
Claims (9)
dass ein bei einer maximalen Befüllung des Ausgleichsbehälters (20; 30) mit Kühlflüssigkeit verbleibendes Luftvolumen (2) im Ausgleichsbehälter (20; 30) einstellbar ist.Compensating container (20; 30) for the cooling liquid of a liquid-cooled machine, in particular a liquid-cooled internal combustion engine of a vehicle, comprising
in that a volume of air (2) remaining at a maximum filling of the expansion tank (20; 30) with coolant is adjustable in the expansion tank (20; 30).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102014018366.1A DE102014018366A1 (en) | 2014-12-10 | 2014-12-10 | Expansion tank for the coolant of liquid-cooled internal combustion engines |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3032064A1 true EP3032064A1 (en) | 2016-06-15 |
EP3032064B1 EP3032064B1 (en) | 2020-04-01 |
Family
ID=54292557
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15002877.7A Active EP3032064B1 (en) | 2014-12-10 | 2015-10-08 | Compensating tank for the cooling liquid of liquid-cooled combustion engines |
Country Status (6)
Country | Link |
---|---|
US (1) | US10823044B2 (en) |
EP (1) | EP3032064B1 (en) |
CN (1) | CN105697129B (en) |
BR (1) | BR102015030414B1 (en) |
DE (1) | DE102014018366A1 (en) |
RU (1) | RU2704588C2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102017120056A1 (en) | 2017-08-31 | 2019-02-28 | Volkswagen Aktiengesellschaft | Expansion tank for a cooling system of a vehicle and vehicle with such a reservoir |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
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US9719409B2 (en) * | 2014-12-26 | 2017-08-01 | Ford Global Technologies, Llc | Method and system for engine cooling system control |
KR102317609B1 (en) * | 2018-09-11 | 2021-10-25 | 바르실라 핀랜드 오이 | Compartmented header tanks for liquid coolant, multi-engine header tank arrangements and power plants and marine vessels equipped with such multi-engine header tank arrangements |
GB2582543B (en) * | 2019-03-12 | 2021-12-29 | Jaguar Land Rover Ltd | Degassing apparatus having multiple chambers |
CN112438608B (en) * | 2019-08-29 | 2022-02-18 | 宁波方太厨具有限公司 | Steam box water level measuring device |
JP7359794B2 (en) * | 2021-03-03 | 2023-10-11 | トヨタ自動車株式会社 | refrigerant circuit |
DE102023108535B3 (en) | 2023-04-04 | 2024-06-20 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Filler neck of a water tank of a motor vehicle |
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-
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- 2015-11-12 RU RU2015148667A patent/RU2704588C2/en active
- 2015-11-23 US US14/949,234 patent/US10823044B2/en active Active
- 2015-12-03 BR BR102015030414-5A patent/BR102015030414B1/en active IP Right Grant
- 2015-12-10 CN CN201510910123.3A patent/CN105697129B/en active Active
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Also Published As
Publication number | Publication date |
---|---|
RU2704588C2 (en) | 2019-10-29 |
BR102015030414B1 (en) | 2023-04-25 |
BR102015030414A2 (en) | 2016-06-14 |
CN105697129B (en) | 2020-01-07 |
EP3032064B1 (en) | 2020-04-01 |
CN105697129A (en) | 2016-06-22 |
RU2015148667A3 (en) | 2019-04-15 |
RU2015148667A (en) | 2017-05-23 |
BR102015030414A8 (en) | 2021-08-31 |
US10823044B2 (en) | 2020-11-03 |
DE102014018366A1 (en) | 2016-06-16 |
US20160169084A1 (en) | 2016-06-16 |
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