EP0657633A1 - Partially filled boiling liquid cooling system - Google Patents

Partially filled boiling liquid cooling system Download PDF

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Publication number
EP0657633A1
EP0657633A1 EP94117995A EP94117995A EP0657633A1 EP 0657633 A1 EP0657633 A1 EP 0657633A1 EP 94117995 A EP94117995 A EP 94117995A EP 94117995 A EP94117995 A EP 94117995A EP 0657633 A1 EP0657633 A1 EP 0657633A1
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EP
European Patent Office
Prior art keywords
cooling system
storage container
condenser
evaporative cooling
condensate
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Granted
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EP94117995A
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German (de)
French (fr)
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EP0657633B1 (en
Inventor
Reinhard Mader
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Bayerische Motoren Werke AG
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Bayerische Motoren Werke AG
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/0231—Header boxes having an expansion chamber
    • 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
    • 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
    • F01P3/00—Liquid cooling
    • F01P3/22—Liquid cooling characterised by evaporation and condensation of coolant in closed cycles; characterised by the coolant reaching higher temperatures than normal atmospheric boiling-point
    • F01P3/2271—Closed cycles with separator and liquid return
    • 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
    • F01P3/00—Liquid cooling
    • F01P3/22—Liquid cooling characterised by evaporation and condensation of coolant in closed cycles; characterised by the coolant reaching higher temperatures than normal atmospheric boiling-point
    • F01P2003/2214—Condensers
    • F01P2003/2221—Condensers of the horizontal type

Definitions

  • the invention relates to a partially flooded evaporative cooling system according to the preamble of claim 1.
  • Such a system is known for example from DE-A 40 01 208.
  • the reservoir is located below the condenser. This means that a minimum overall height is specified, which cannot always be ensured with today's vehicles.
  • the object of the present invention is to remedy this situation and to propose an arrangement and configuration for a storage container for liquid condensate in a generic cooling system which is simple in construction and has the least possible outlay for filling and checking the fill level.
  • This object is achieved by the characterizing features of claim 1.
  • the length of the ventilation line determines the filling level when the internal combustion engine is cold. As a result, the system can be very easily adapted to different cooling system sizes by simply shortening or lengthening the ventilation line.
  • Claim 2 prevents in particular that excessive steam entry into the expansion tank occurs when the condenser is fully charged with steam.
  • FIG. 1 shows an internal combustion engine 1 with an evaporative cooling system. It consists of the cooling rooms 2 in the crankcase 3 and the cooling rooms 4 in the cylinder head 5.
  • a flow line 6 leads from the cylinder head 5 to a steam separator 7.
  • the steam separator 7 is connected to the inlet connection 8 of a cross-flow condenser 9. Accordingly, the condenser 9 has a lateral inlet collecting box 10 and an outlet collecting box 11.
  • a connecting line 12 connects the two header boxes 10 and 11 at their lower end and leads via a return line 13 to a condensate feed pump 14.
  • the condensate feed pump 14 conveys the liquid condensate via the line 16 into the lower part of the cold rooms 2 in the crankcase 3.
  • the reservoir 17 is arranged in one piece with it. At its lower end there is a passage opening 18 which connects the storage container 17 to the condensate collection box 11.
  • a ventilation line 21 branches off from the storage container 17 via a throttle point 20 and runs in the condensate collection box 11 to level I.
  • the beginning of the ventilation line 21 in area 19 lies at a level II, which below the lower edge of the inlet connector 8 runs into the condenser 9.
  • the storage container 17 has a closure lid 22, which serves to fill the liquid condensate into the storage container. Furthermore, a connecting line 23 branches off from the storage container 17 to the surroundings. So that no dirt from the environment enters this connecting line 23, it has an appropriately designed opening and / or a molecular sieve at its free end. Furthermore, the free end of the connecting line 23 is arranged so that it can be cooled by the wind. This ensures that almost no coolant can escape even in the vapor state.
  • FIG 2 the system of Figure 1 is shown after an initial filling with the coolant pump stopped.
  • the closure cover 22 is opened and condensate is filled in until the condensate in the storage container 17 is above level II.
  • the ventilation line 21 is then completely filled and the condenser 9 with its collecting boxes 10 and 11 is partially filled with condensate.
  • the collecting line 12 and the condensate return line 13 are completely filled with condensate.
  • the condensate in lines 15 and 16 is at the same filling level as the condenser 9.
  • the filling level in line 16 results from the fact that the condensate feed pump 14 does not completely block in the rest position, but rather only represents an increased flow resistance.
  • the arrangement according to FIG. 3 arises when the one filled according to FIG. 2 and through the closure cover 22 closed system, the coolant delivery pump 14 is switched on.
  • the condensate is pumped into the cold rooms 2 and 4 and into the flow line 6 to the steam separator 7. From the steam separator 7, it runs through the line 15 to the condensate return line 13 and thus to the suction side of the condensate feed pump 14. This process displaces the air in the previously unfilled spaces and can escape via the ventilation line 21 and the connecting line 23. As a result, the condensate level in the storage container 17 simultaneously drops to level I, which corresponds to the cold filling level when the internal combustion engine is stopped.
  • liquid condensate i.e. coolant
  • the state in FIG. 4 arises in the cooling system according to FIG. 2 when the internal combustion engine has been started and is operating in the part-load range, that is to say releases heat to the liquid condensate, so that first vapor bubbles can form in the cooling rooms 2 and 4.
  • the running condensate feed pump ensures that the cooling chambers of the internal combustion engine are constantly supplied with liquid condensate. Excess condensate and steam which forms are mixed with liquid condensate are conveyed via the feed line 6 to the steam separator 7, where the steam separates from the liquid coolant. The steam then passes into the inlet port 8 of the condenser 9, where it can condense.
  • the condensate level in the condenser and its collecting tanks drops, so that the ventilation line 21 at its lower end no longer immersed in the condensate.
  • the air displaced by the steam can escape from the condenser into the storage container 17 and from there via the connecting line 23 to the outside. Due to the increasing pressure in the system, the condensate level in the storage container 17 increases slightly above the filling level I.
  • Decreasing engine load also means decreasing vapor bubble formation and increase in the liquid condensate. This also lowers the pressure in the cooling system, so that ambient air can be supplied via the connecting line 23, the reservoir 17, the throttle 20 and the ventilation line 21. This prevents negative pressure in the system. With this load condition, the condensate level in the storage tank drops below fill level I.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

In order to ensure ease of filling and checking of the filling level in a partially filled evaporation cooling system, it is proposed to use a cross-flow condenser as condenser (9), to the outlet side condensate collector (11) of which a laterally connected reservoir (17) is fixed in one piece. The said reservoir (17) is connected by way of a passage (18) in its lower area to the lower area of the condensate collector (11). From its upper area a venting line (21) branches off into the condensate collector (11) up to the filling level (I) for the cold internal combustion engine. <IMAGE>

Description

Die Erfindung bezieht sich auf ein teilgeflutetes Verdampfungskühlsystem nach dem Oberbegriff des 1. Anspruchs.The invention relates to a partially flooded evaporative cooling system according to the preamble of claim 1.

Ein derartiges System ist beispielsweise aus der DE-A 40 01 208 bekannt. Hier ist der Vorratsbehälter unterhalb des Kondensators angeordnet. Dadurch ist eine Mindestbauhöhe Vorgegeben, die nicht immer bei heutigen Fahrzeugen sichergestellt werden kann.Such a system is known for example from DE-A 40 01 208. Here the reservoir is located below the condenser. This means that a minimum overall height is specified, which cannot always be ensured with today's vehicles.

Aufgabe der Vorliegenden Erfindung ist es, hier Abhilfe zu schaffen und eine Anordnung und Ausgestaltung für einen Vorratsbehälter für flüssiges Kondensat bei einem gattungsgemäßen Kühlsystem Vorzuschlagen, das einfach im Aufbau ist und einen möglichst geringen Aufwand für die Befüllung und die Kontrolle des Füllstandes aufweist.The object of the present invention is to remedy this situation and to propose an arrangement and configuration for a storage container for liquid condensate in a generic cooling system which is simple in construction and has the least possible outlay for filling and checking the fill level.

Diese Aufgabe wird erfindungsgemäß durch die kennzeichnenden Merkmale des 1. Anspruchs gelöst. Damit wird vom Aufbau her im Bereich des Kondensators ein Kühlsystem geschaffen, das identisch ist mit den heute üblichen Konvektionskühlsystemen und so auch befüllt werden kann. Dadurch wird auch die Bauhöhe auf heute übliche Maße reduziert, so daß Einbauprobleme minimiert werden. Die Länge der Be-/Entlüftungsleitung bestimmt hierbei die Befüllhöhe bei kalter Brennkraftmaschine. Dadurch kann das System sehr einfach an unterschiedliche Kühlsystemgrößen angepaßt werden, in dem einzig und allein die Be-/Entlüftungsleitung verkürzt oder verlängert wird. Ein weiterer Vorteil der erfindungsgemäßen Lösung ist darin zu sehen, daß durch die seitliche Anordnung des Vorratsbehälters und seine Anbindung an den Kondensatsammelkasten des Kondensators eine bestmögliche Funktionssicherheit auch bei extremen Fahr- und Fahrzeugzuständen gegeben ist, da immer sichergestellt ist, daß der Kondensatpumpe ausreichend flüssiges Kondensat auf ihrer Saugseite zur Verfügung steht.This object is achieved by the characterizing features of claim 1. This creates a cooling system in the area of the condenser, which is identical to the conventional convection cooling systems and can therefore be filled. This also reduces the overall height to today's usual dimensions, so that installation problems are minimized. The length of the ventilation line determines the filling level when the internal combustion engine is cold. As a result, the system can be very easily adapted to different cooling system sizes by simply shortening or lengthening the ventilation line. Another advantage of the solution according to the invention can be seen in the fact that the lateral arrangement of the storage container and its connection to the condensate collector of the condenser provide the best possible functional reliability even in extreme driving and vehicle conditions, since it is always ensured that the condensate pump has sufficient liquid condensate is available on their suction side.

Die Unteransprüche beschreiben vorteilhafte Weiterbildungen der Erfindung.The subclaims describe advantageous developments of the invention.

Durch Anspruch 2 wird insbesondere verhindert, daß ein übermäßiger Dampfeintritt in den Ausgleichsbehälter bei voll beaufschlagtem Kondensator mit Dampf geschieht.Claim 2 prevents in particular that excessive steam entry into the expansion tank occurs when the condenser is fully charged with steam.

Im folgenden wird die Erfindung anhand eines ausgewählten Beispiels näher erläutert. Es stellen dar:

Figur 1
einen schematisierten Querschnitt durch ein teilgeflutetes Verdampfungskühlsystem nach der Erfindung;
Figur 2
das System nach Figur 1 bei der Erstbefüllung;
Figur 3 bis 6
das System gemäß Figur 1 bei verschiedenen Belastungszuständen.
The invention is explained in more detail below with the aid of a selected example. They represent:
Figure 1
a schematic cross section through a partially flooded evaporative cooling system according to the invention;
Figure 2
the system of Figure 1 at the initial filling;
Figure 3 to 6
the system of Figure 1 with different load conditions.

In Figur 1 ist eine Brennkraftmaschine 1 mit Verdampfungskühlsystem dargestellt. Es besteht aus den Kühlräumen 2 im Kurbelgehäuse 3 sowie den Kühlräumen 4 im Zylinderkopf 5.FIG. 1 shows an internal combustion engine 1 with an evaporative cooling system. It consists of the cooling rooms 2 in the crankcase 3 and the cooling rooms 4 in the cylinder head 5.

Vom Zylinderkopf 5 führt eine Vorlaufleitung 6 zu einem Dampfabscheider 7.A flow line 6 leads from the cylinder head 5 to a steam separator 7.

Der Dampfabscheider 7 ist mit dem Eintrittsstutzen 8 eines Querstromkondensators 9 verbunden. Dementsprechend weist der Kondensator 9 einen seitlichen Einlaufsammelkasten 10 und einen Auslaufsammelkasten 11 auf.The steam separator 7 is connected to the inlet connection 8 of a cross-flow condenser 9. Accordingly, the condenser 9 has a lateral inlet collecting box 10 and an outlet collecting box 11.

Eine Verbindungsleitung 12 verbindet die beiden Sammelkästen 10 und 11 an ihrem unteren Ende und führt über eine Rücklaufleitung 13 zu einer Kondensatförderpumpe 14. Vor der Kondensatförderpumpe 14 mündet in die Rücklaufleitung 13 die Kondensatleitung 15, die vom Dampfabscheider 7 abzweigt.A connecting line 12 connects the two header boxes 10 and 11 at their lower end and leads via a return line 13 to a condensate feed pump 14.

Die Kondensatförderpumpe 14 fördert das flüssige Kondensat über die Leitung 16 in den unteren Teil der Kühlräume 2 im Kurbelgehäuse 3.The condensate feed pump 14 conveys the liquid condensate via the line 16 into the lower part of the cold rooms 2 in the crankcase 3.

Seitlich neben dem Kondensatsammelkasten 11 ist in einstückiger Ausbildung mit ihm der Vorratsbehälter 17 angeordnet. An seinem unteren Ende ist eine Durchtrittsöffnung 18 angeordnet, die den Vorratsbehälter 17 mit dem Kondensatsammelkasten 11 verbindet.Laterally next to the condensate collection box 11, the reservoir 17 is arranged in one piece with it. At its lower end there is a passage opening 18 which connects the storage container 17 to the condensate collection box 11.

Von seinem oberen Ende 19 zweigt über eine Drosselstelle 20 eine Be-/Entlüftungsleitung 21 aus dem Vorratsbehälter 17 ab und verläuft im Kondensatsammelkasten 11 bis auf das Niveau I. Der Beginn der Be-/Entlüftungsleitung 21 im Bereich 19 liegt auf einem Niveau II, welches unterhalb der Unterkante des Eintrittsstutzens 8 in den Kondensator 9 verläuft.From its upper end 19, a ventilation line 21 branches off from the storage container 17 via a throttle point 20 and runs in the condensate collection box 11 to level I. The beginning of the ventilation line 21 in area 19 lies at a level II, which below the lower edge of the inlet connector 8 runs into the condenser 9.

Der Vorratsbehälter 17 weist einen Verschlußdeckel 22 auf, der zum Einfüllen des flüssigen Kondensats in den Vorratsbehälter dient. Weiterhin zweigt von dem Vorratsbehälter 17 eine Verbindungsleitung 23 zur Umgebung hin ab. Damit kein Schmutz von der Umgebung in diese Verbindungsleitung 23 eintritt, weist sie an ihrem freien Ende eine entsprechend gestaltete Öffnung und/oder ein Molekularsieb auf. Weiterhin ist das freie Ende der Verbindungsleitung 23 so angeordnet, daß es vom Fahrtwind gekühlt werden kann. Dadurch wird sichergestellt, daß nahezu kein Kühlmittel auch im dampfförmigen Zustand entweichen kann.The storage container 17 has a closure lid 22, which serves to fill the liquid condensate into the storage container. Furthermore, a connecting line 23 branches off from the storage container 17 to the surroundings. So that no dirt from the environment enters this connecting line 23, it has an appropriately designed opening and / or a molecular sieve at its free end. Furthermore, the free end of the connecting line 23 is arranged so that it can be cooled by the wind. This ensures that almost no coolant can escape even in the vapor state.

In Figur 2 ist das System nach Figur 1 nach einer Erstbefüllung bei stehender Kühlmittelpumpe dargestellt. Zur Erstbefüllung wird der Verschlußdeckel 22 geöffnet und solange Kondensat eingefüllt, bis im Vorratsbehälter 17 das Kondensat über das Niveau II steht. Hierbei ist dann die Be-/Entlüftungsleitung 21 vollständig sowie der Kondensator 9 mit seinen Sammelkästen 10 und 11 teilweise mit Kondensat gefüllt. Weiterhin sind vollständig mit Kondensat gefüllt die Sammelleitung 12 und die Kondensatrücklaufleitung 13.In Figure 2, the system of Figure 1 is shown after an initial filling with the coolant pump stopped. For the first filling, the closure cover 22 is opened and condensate is filled in until the condensate in the storage container 17 is above level II. The ventilation line 21 is then completely filled and the condenser 9 with its collecting boxes 10 and 11 is partially filled with condensate. Furthermore, the collecting line 12 and the condensate return line 13 are completely filled with condensate.

Auf gleichem Füllniveau wie der Kondensator 9 steht das Kondensat in den Leitungen 15 und 16. Die Füllhöhe in Leitung 16 ergibt sich dadurch, daß die Kondensatförderpumpe 14 nicht vollständig in Ruhestellung sperrt, sondern nur einen erhöhten Durchflußwiderstand darstellt.The condensate in lines 15 and 16 is at the same filling level as the condenser 9. The filling level in line 16 results from the fact that the condensate feed pump 14 does not completely block in the rest position, but rather only represents an increased flow resistance.

Die Anordnung nach Figur 3 stellt sich dann ein, wenn bei dem gemäß Figur 2 befüllten und durch den Verschlußdeckel 22 verschlossenen System die Kühlmittelförderpumpe 14 eingeschaltet wird.The arrangement according to FIG. 3 arises when the one filled according to FIG. 2 and through the closure cover 22 closed system, the coolant delivery pump 14 is switched on.

Hierdurch wird das Kondensat in die Kühlräume 2 und 4 sowie in die Vorlaufleitung 6 bis zum Dampfabscheider 7 gepumpt. Vom Dampfabscheider 7 läuft es durch die Leitung 15 zur Kondensatrücklaufleitung 13 und damit zur Saugseite der Kondensatförderpumpe 14. Durch diesen Vorgang wird die Luft in den vorher ungefüllten Räumen verdrängt und kann über die Be-/Entlüftungsleitung 21 und die Verbindungsleitung 23 entweichen. Dadurch sinkt gleichzeitig der Kondensatstand in dem Vorratsbehälter 17 auf das Niveau I, welches dem Kaltbefüllungsstand bei stehender Brennkraftmaschine entspricht.As a result, the condensate is pumped into the cold rooms 2 and 4 and into the flow line 6 to the steam separator 7. From the steam separator 7, it runs through the line 15 to the condensate return line 13 and thus to the suction side of the condensate feed pump 14. This process displaces the air in the previously unfilled spaces and can escape via the ventilation line 21 and the connecting line 23. As a result, the condensate level in the storage container 17 simultaneously drops to level I, which corresponds to the cold filling level when the internal combustion engine is stopped.

Wird bei einer Kontrolle des Füllniveaus und stehender Brennkraftmaschine dieses Niveau unterschritten, so muß die Bedienungsperson flüssiges Kondensat, sprich Kühlmittel, nachfüllen.If the level falls below this level while the internal combustion engine is at a standstill, the operator must refill liquid condensate, i.e. coolant.

Der Zustand in Figur 4 stellt sich in dem Kühlsystem nach Figur 2 dann ein, wenn die Brennkraftmaschine gestartet worden ist und im Teillastbereich arbeitet, d.h. Wärme an das flüssige Kondensat abgibt, so daß sich erste Dampfblasen in den Kühlräumen 2 und 4 bilden können. Durch die laufende Kondensatförderpumpe wird sichergestellt, daß die Kühlräume der Brennkraftmaschine ständig mit flüssigem Kondensat versorgt werden. Überschüssiges Kondensat sowie sich bildender Dampf mit flüssigem Kondensat vermischt werden über die Vorlaufleitung 6 zum Dampfabscheider 7 gefördert, wo sich der Dampf vom flüssigen Kühlmittel trennt. Der Dampf gelangt dann in den Einlaßstutzen 8 des Kondensators 9, wo er kondensieren kann. Durch die Dampfbildung sinkt der Kondensatstand im Kondensator und seinen Sammelkästen, so daß die Be-/Entlüftungsleitung 21 an ihrem unteren Ende nicht mehr ins Kondensat eintaucht. Dadurch kann die durch den Dampf verdrängte Luft aus dem Kondensator in den Vorratsbehälter 17 entweichen und von dort weiter über die Verbindungsleitung 23 ins Freie. Durch den ansteigenden Druck im System erhöht sich der Kondensatstand im Vorratsbehälter 17 leicht über das Befüllniveau I.The state in FIG. 4 arises in the cooling system according to FIG. 2 when the internal combustion engine has been started and is operating in the part-load range, that is to say releases heat to the liquid condensate, so that first vapor bubbles can form in the cooling rooms 2 and 4. The running condensate feed pump ensures that the cooling chambers of the internal combustion engine are constantly supplied with liquid condensate. Excess condensate and steam which forms are mixed with liquid condensate are conveyed via the feed line 6 to the steam separator 7, where the steam separates from the liquid coolant. The steam then passes into the inlet port 8 of the condenser 9, where it can condense. As a result of the vapor formation, the condensate level in the condenser and its collecting tanks drops, so that the ventilation line 21 at its lower end no longer immersed in the condensate. As a result, the air displaced by the steam can escape from the condenser into the storage container 17 and from there via the connecting line 23 to the outside. Due to the increasing pressure in the system, the condensate level in the storage container 17 increases slightly above the filling level I.

Bei Vollast ergibt sich der in Figur 5 dargestellte Zustand. Er unterscheidet sich durch den Lastzustand nach Figur 4 dadurch, daß nunmehr praktisch der gesamte Kondensator 9 von Dampf gefüllt ist. Dadurch sinkt der Kondensatstand im Kondensator 9 weiter, während er sich im Vorratsbehälter 17 weiter erhöht. Aufgrund der Drosselstelle 20 entweicht keiner oder nur wenig Dampf durch die Be-/Entlüftungsleitung 21 in den Vorratsbehälter 17 und weiter in die Verbindungsleitung 23. Aufgrund der Lage ihres Endes im Fahrtwind kondensiert er dort und kann bei abnehmender Motorlast wieder zurückgesaugt werden in den Vorratsbehälter 17.At full load, the state shown in Figure 5 results. It differs in the load state according to FIG. 4 in that practically the entire condenser 9 is now filled with steam. As a result, the condensate level in the condenser 9 drops further, while it increases further in the reservoir 17. Because of the throttling point 20, little or no steam escapes through the ventilation line 21 into the storage container 17 and further into the connecting line 23. Because of the position of its end in the wind, it condenses there and can be sucked back into the storage container 17 when the engine load decreases .

Der Zustand der abnehmenden Last ist in Bild 6 dargestellt. Abnehmende Motorlast bedeutet auch abnehmende Dampfblasenbildung und Zunahme des flüssigen Kondensats Dadurch sinkt auch der Druck im Kühlsystem, so daß über die Verbindungsleitung 23, den Vorratsbehälter 17, die Drossel 20 und die Be-/Entlüftungsleitung 21 Umgebungsluft nachgeführt werden kann. Somit wird Unterdruck im System verhindert. Bei diesem Lastzustand sinkt der Kondensatstand im Vorratsbehälter unter das Befüllniveau I.The state of the decreasing load is shown in Figure 6. Decreasing engine load also means decreasing vapor bubble formation and increase in the liquid condensate. This also lowers the pressure in the cooling system, so that ambient air can be supplied via the connecting line 23, the reservoir 17, the throttle 20 and the ventilation line 21. This prevents negative pressure in the system. With this load condition, the condensate level in the storage tank drops below fill level I.

Claims (7)

Teilgeflutetes Verdampfungskühlsystem für Brennkraftmaschinen mit einem Kondensator und einem Vorratsbehälter für flüssiges Kondensat, der über eine Verbindungsleitung mit der Umgebung in Verbindung steht,
dadurch gekennzeichnet, daß der Vorratsbehälter (17) seitlich am Kondensator (9) angeordnet und integraler Bestandteil des Kondensators (9) ist, daß der Vorratsbehälter (17) bis auf den Grund des benachbarten Kondensatsammelkastens (11) reicht, daß in diesem Bereich eine Strömungsverbindung (18) zwischen dem Vorratsbehälter (17) und dem Kondensatsammelkasten (11) vorgesehen ist und daß vom oberen Bereich des Vorratsbehälters (17) eine Be-/Entlüftungsleitung (21) in den benachbarten Kondensatsammelkasten (11) bis auf das Befüllniveau I bei kalter Brennkraftmaschine (1) verläuft.Partially flooded evaporative cooling system for internal combustion engines with a condenser and a reservoir for liquid condensate, which is connected to the environment via a connecting line,
characterized in that the storage container (17) is arranged on the side of the condenser (9) and is an integral part of the condenser (9), that the storage container (17) extends to the bottom of the adjacent condensate collection box (11), that in this area a flow connection (18) is provided between the storage container (17) and the condensate collection box (11) and that from the upper region of the storage container (17) a ventilation line (21) in the adjacent condensate collection box (11) up to the filling level I in a cold internal combustion engine (1) runs. Teilgeflutetes Verdampfungskühlsystem nach Anspruch 1,
dadurch gekennzeichnet, daß am Beginn der Be-/Entlüftungsleitung (21) im Vorratsbehälter (17) eine Drosselstelle (20) vorgesehen ist.Partially flooded evaporative cooling system according to claim 1,
characterized in that a throttling point (20) is provided in the reservoir (17) at the beginning of the ventilation line (21). Teilgeflutetes Verdampfungskühlsystem nach Anspruch 1 oder 2,
dadurch gekennzeichnet, daß der Vorratsbehälter (17) von einem Verschlußdeckel (22) mit Überdruckventil verschlossen ist.Partially flooded evaporative cooling system according to claim 1 or 2,
characterized in that the storage container (17) is closed by a closure cover (22) with a pressure relief valve. Teilgeflutetes Verdampfungskühlsystem nach einem der vorangegangenen Ansprüche,
dadurch gekennzeichnet, daß der Kondensator (9) als Querstromkondensator ausgebildet ist.Partially flooded evaporative cooling system according to one of the preceding claims,
characterized in that the capacitor (9) is designed as a cross-flow capacitor. Teilgeflutetes Verdampfungskühlsystem nach einem der vorangegangenen Ansprüche,
dadurch gekennzeichnet, daß der Vorratsbehälter (17) zumindest teilweise durchsichtige Außenwände aufweist.Partially flooded evaporative cooling system according to one of the preceding claims,
characterized in that the storage container (17) has at least partially transparent outer walls. Teilgeflutetes Verdampfungskühlsystem nach einem der vorangegangenen Ansprüche,
dadurch gekennzeichnet, daß der Beginn der Be-/Entlüftungsleitung (21) unterhalb des Eintrittsstutzens (8) des Dampfes in dem Kondensator (9) liegt.Partially flooded evaporative cooling system according to one of the preceding claims,
characterized in that the beginning of the ventilation line (21) lies below the inlet connection (8) of the steam in the condenser (9). Teilgeflutetes Verdampfungskühlsystem nach einem der vorangegangenen Ansprüche,
dadurch gekennzeichnet, daß ein Niveauschalter am Grund des Vorratsbehälters eingebaut ist.Partially flooded evaporative cooling system according to one of the preceding claims,
characterized in that a level switch is installed at the bottom of the storage container.
EP94117995A 1993-12-09 1994-11-15 Partially filled boiling liquid cooling system Expired - Lifetime EP0657633B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4341927 1993-12-09
DE4341927A DE4341927A1 (en) 1993-12-09 1993-12-09 Partially flooded evaporative cooling system

Publications (2)

Publication Number Publication Date
EP0657633A1 true EP0657633A1 (en) 1995-06-14
EP0657633B1 EP0657633B1 (en) 1997-08-13

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ID=6504526

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94117995A Expired - Lifetime EP0657633B1 (en) 1993-12-09 1994-11-15 Partially filled boiling liquid cooling system

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EP (1) EP0657633B1 (en)
DE (2) DE4341927A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7791885B2 (en) 2008-05-14 2010-09-07 Abb Research Ltd Two-phase cooling circuit

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008033024B4 (en) 2008-07-14 2010-06-10 Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr Method for venting a coolant circuit of an internal combustion engine and coolant circuit for an internal combustion engine

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2532740A1 (en) * 1982-09-03 1984-03-09 Valeo Diesel engine with radiator of cooling system circuit
WO1986003554A1 (en) * 1984-12-05 1986-06-19 Bayerische Motoren Werke Aktiengesellschaft Plastic radiator for transverse-flow cooling systems of internal combustion engines
EP0496942A1 (en) * 1991-01-31 1992-08-05 Firma Carl Freudenberg Vapour-cooled internal combustion engine
EP0571248A1 (en) * 1992-05-19 1993-11-24 Valeo Thermique Moteur Cooling device for an internal combustion engine with a condensor
DE4231846A1 (en) * 1992-09-23 1994-03-24 Bayerische Motoren Werke Ag IC engine evaporation cooling system - has expansion container in series with reservoir, and expansion container having volume at least that of condenser connected to expansion container via venting line.

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2033960A1 (en) * 1970-07-08 1972-01-20 Teledyne Industries, Ine , Los Ange les,Cahf (VStA) Multi-stage stratified steam cooling system with closed circuit for internal combustion engines
DE4001208A1 (en) * 1990-01-17 1991-07-18 Bayerische Motoren Werke Ag EVAPORATION COOLING SYSTEM FOR A LIQUID-COOLED INTERNAL COMBUSTION ENGINE
FR2674289B1 (en) * 1991-03-20 1995-02-17 Valeo Thermique Moteur Sa DIPHASIC COOLING DEVICE FOR INTERNAL COMBUSTION ENGINE.
DE4122551A1 (en) * 1991-07-08 1993-01-14 Bayerische Motoren Werke Ag Compact membrane air bleeding assembly for vehicle radiator system - which seals air-filled gap at radiator head to prevent escape of water droplets and vapour
DE4222913C2 (en) * 1992-07-11 1996-02-01 Bayerische Motoren Werke Ag Evaporative cooling system for an internal combustion engine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2532740A1 (en) * 1982-09-03 1984-03-09 Valeo Diesel engine with radiator of cooling system circuit
WO1986003554A1 (en) * 1984-12-05 1986-06-19 Bayerische Motoren Werke Aktiengesellschaft Plastic radiator for transverse-flow cooling systems of internal combustion engines
EP0496942A1 (en) * 1991-01-31 1992-08-05 Firma Carl Freudenberg Vapour-cooled internal combustion engine
EP0571248A1 (en) * 1992-05-19 1993-11-24 Valeo Thermique Moteur Cooling device for an internal combustion engine with a condensor
DE4231846A1 (en) * 1992-09-23 1994-03-24 Bayerische Motoren Werke Ag IC engine evaporation cooling system - has expansion container in series with reservoir, and expansion container having volume at least that of condenser connected to expansion container via venting line.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7791885B2 (en) 2008-05-14 2010-09-07 Abb Research Ltd Two-phase cooling circuit

Also Published As

Publication number Publication date
DE59403722D1 (en) 1997-09-18
EP0657633B1 (en) 1997-08-13
DE4341927A1 (en) 1995-06-14

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