EP0933510A2 - Internal combustion engine - Google Patents
Internal combustion engine Download PDFInfo
- Publication number
- EP0933510A2 EP0933510A2 EP98124469A EP98124469A EP0933510A2 EP 0933510 A2 EP0933510 A2 EP 0933510A2 EP 98124469 A EP98124469 A EP 98124469A EP 98124469 A EP98124469 A EP 98124469A EP 0933510 A2 EP0933510 A2 EP 0933510A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- coolant
- internal combustion
- combustion engine
- space
- cylinders
- 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
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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
- F01P7/00—Controlling of coolant flow
- F01P7/14—Controlling of coolant flow the coolant being liquid
- F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
- F01P7/167—Controlling of coolant flow the coolant being liquid by thermostatic control by adjusting the pre-set temperature according to engine parameters, e.g. engine load, engine speed
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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
- F01P5/00—Pumping cooling-air or liquid coolants
- F01P5/10—Pumping liquid coolant; Arrangements of coolant pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B75/00—Other engines
- F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
- F02B75/18—Multi-cylinder engines
- F02B75/22—Multi-cylinder engines with cylinders in V, fan, or star arrangement
- F02B75/224—Multi-cylinder engines with cylinders in V, fan, or star arrangement with cylinders in fan arrangement
Definitions
- the invention relates to an internal combustion engine with several water-cooled and V-shaped arranged cylinders of a cylinder crankcase, in particular a motor vehicle, with a V space formed in the V between the cylinder rows forming the V, with coolant jackets associated with respective cylinders, the coolant from the coolant jackets into respective cylinder heads and out of these via respective coolant outflow openings back into the cylinder crankcase in a coolant return channel arranged in the V-space flows, according to the preamble of claim 1.
- EP 0 637 682 B1 describes a water-cooled multi-cylinder internal combustion engine with a V-shape arranged rows of cylinders known, in the V-space side by side The following is seen lying from the inside outwards, a water supply, pump receiving bores for respective fuel injection pumps, coolant longitudinal channels, Valve tappet guides and coolant jackets for the cylinders. However, all of this is in one piece with the cylinder crankcase designed so that this arrangement is expensive to manufacture and is expensive.
- DE 41 36 773 C1 describes a distributor housing for a V internal combustion engine, wherein in the V-space a distributor housing with a flat base plate on a flange of the crankcase the internal combustion engine is arranged.
- This distributor housing integrated a large number of components usually taken over from separately arranged components Functions.
- the distributor housing leads in particular cooling water flows of the internal combustion engine, but only connecting flanges are provided and the coolant channels themselves are to be completely formed in the cylinder crankcase. Only a water guide housing is completely formed in the distributor housing, which however only serves as a holder for a thermostat and a water pump and none at all Distribution function for the cooling water fulfilled.
- DE-OS-2 015 546 describes an internal combustion engine with rows of cylinders arranged in a V-shape known, with respective cooling jackets of the cylinder block and cylinder head together keep in touch. Furthermore, a multiple connector is arranged in the V space, which Channels for the supply of a fuel-air mixture and for the removal of exhaust gases to care. At one end of the multiple connector are connections for coolant channels intended. This arrangement is due to the execution in several discrete elements however, complicated to manufacture and assemble and expensive. It also flows Coolant on one side from part of the multiple connector in the cylinder block on, crosses it completely along the rows of cylinder heads and only flows afterwards again from the cylinder block into another part of the multiple connector. Thereby the problem of uneven cooling mentioned above also arises here of the cylinder block.
- the present invention is therefore based on the object of an improved internal combustion engine to provide the above type, the above Disadvantages are overcome and a compact design for the coolant system optimal use of the V-space is achieved.
- one with the coolant return channel in the V-space and the mixing chamber connected to the coolant outflow openings of the cylinder heads immediately adjacent to an outer wall of the coolant jacket of the cylinder is.
- the mixing chamber is open on a side adjacent to the V-space is, wherein a cover is arranged such that it has a coolant inlet channel in the V-space forms and a means for selectively connecting the coolant inlet channel with the Mixing chamber is provided, can be achieved in a simple manner with a small space requirement a coolant management system by simply placing a cover on the V space.
- a bypass in the cooling circuit immediately and without additional measures arranged cooler designed so that in operating phases in which the internal combustion engine does not have a predetermined operating temperature, the cooler bridges and thereby quickly reaching the predetermined operating temperature for the first time or again can.
- a simple and inexpensive arrangement is achieved in that the means for A map thermostat optionally connects the coolant inlet channel to the mixing chamber is.
- a W-shaped arrangement of the cylinders with a correspondingly compact design of the internal combustion engine is achieved in that two rows of cylinders of the V-shaped arrangement each themselves are arranged in a V-shape.
- the cover is also designed such that it is integral has a coolant inlet which is connected to the V-space closed by the cover is, and in a preferred manner the cover is additionally designed such that it integrally has the coolant return channel connected to the mixing chamber.
- a temperature sensor is expediently additionally arranged on the cover, which in the coolant return duct protrudes into it.
- FIG. 1 shows an example of an internal combustion engine 10 with a W-shaped cylinder arrangement of cylinders 12, 14, 16 and 18 in a cylinder crankcase 20.
- the internal combustion engine 10 further includes respective cylinder heads 22 and 24, coolant jackets 26 and 28, Coolant inflow openings 30, via the coolant in the direction of arrow 31 into the cylinder heads 22, 24 flows, and coolant outflow openings 32, via the coolant from the cylinder heads 22, 24 flows out again in the direction of arrow 33.
- a mixing chamber 34 is integral with the cylinder crankcase Formed walls 36 and bounded by walls 38 of the coolant jackets 26, 28.
- the mixing chamber 34 also has an opening on a side facing the V-space 35 40 on.
- a cover 42 closes the V-space 35 and thus forms a coolant inlet channel in it 44 out.
- the cover 42 additionally comprises a means 46, for example in the form of a Map thermostats, which either opens or closes the opening 40 and thus selectively connects the mixing chamber 34 to the coolant inlet channel 44.
- Coolant flows into the mixing chamber 34 via the coolant outflow openings 32 Cylinder heads 22, 24 a.
- the mixing chamber 34 is additional connected to a coolant return channel 48 through which the coolant does not go to one shown heat exchanger, for example in the form of a cooler, flows.
- coolant flows at least partially bypassing the cooler directly into the coolant supply duct 44, if the means 46 opens the opening 40, as indicated by arrow 47.
- the coolant becomes cylinders by means of channels 50 or their coolant jackets.
- coolant return duct 48 and a coolant inlet 52 are formed integrally with the cover 42, so that by simply putting the cover 42 on the V-space 35 with one hand automatically and without further measures coolant inlet 52, coolant inlet channel 44, Mixing chamber 34 with optionally openable opening 40 and coolant return channel 48 are trained.
- the cover 42 additionally includes a temperature sensor 54, which in the coolant return channel 44 protrudes into it and determines the temperature of the coolant there and depending on it from this temperature the means 46 for selectively opening or closing the opening 40 controls.
- a coolant pump 56 arranged at the end also ensures a corresponding one Coolant flow.
- the coolant enters the cylinder crankcase via the coolant pump 56 20 and is distributed there to the coolant jackets 26 and 28 of the cylinders 12 to 18.
- the coolant then flows through a cylinder head gasket 58 (FIG. 1) and the Coolant inflow openings 30 in the direction of arrow 31 into the cylinder heads 22 and 24 this in a cross flow and continues to flow through coolant outflow openings 32 below inlet flanges 60 of the cylinder heads 22 and 24, in turn, via the cylinder head gasket 58 into the mixing chamber 34 and thus gets back into the cylinder crankcase 20.
- This arrangement prevents the coolant from escaping from the front Cylinder heads.
- the cover 42 has a multiple function: it takes the thermostat 46, closes the V-space 35 and at the same time picks up the temperature sensor 54 and integrally forms a nozzle 62 for the radiator flow and a nozzle 64 for the radiator return.
Abstract
Description
Die Erfindung betrifft eine Brennkraftmaschine mit mehreren wassergekühlten und V-förmig angeordneten Zylindern eines Zylinderkurbelgehäuses, insbesondere eines Kraftfahrzeugs, mit einem im V ausgebildeten V-Raum zwischen den das V bildenden Zylinderreihen, mit jeweiligen Zylindern zugeordneten Kühlmittelmänteln, wobei das Kühlmittel aus den Kühlmittelmänteln in jeweilige Zylinderköpfe und aus diesen über jeweilige Kühlmittelabströmöffnungen zurück in das Zylinderkurbelgehäuse in einen im V-Raum angeordneten Kühlmittelrücklaufkanal fließt, gemäß dem Oberbegriff des Anspruchs 1.The invention relates to an internal combustion engine with several water-cooled and V-shaped arranged cylinders of a cylinder crankcase, in particular a motor vehicle, with a V space formed in the V between the cylinder rows forming the V, with coolant jackets associated with respective cylinders, the coolant from the coolant jackets into respective cylinder heads and out of these via respective coolant outflow openings back into the cylinder crankcase in a coolant return channel arranged in the V-space flows, according to the preamble of claim 1.
Aus der EP 0 637 682 B1 ist eine wassergekühlte mehrzylindrige Brennkraftmaschine mit V-förmig angeordneten Zylinderreihen bekannt, wobei im V-Raum fächerartig nebeneinander liegend von innen nach außen gesehen folgendes ausgebildet ist, ein Wasservorlauf, Pumpenaufnahmebohrungen für jeweilige Kraftstoff-Einspritzpumpen, Kühlmittellängskanäle, Ventilstößelführungen und Kühlmittelmäntel der Zylinder. All dies ist jedoch einstückig mit dem Zylinderkurbelgehäuse ausgebildet, so daß diese Anordnung in der Herstellung aufwendig und teuer ist.EP 0 637 682 B1 describes a water-cooled multi-cylinder internal combustion engine with a V-shape arranged rows of cylinders known, in the V-space side by side The following is seen lying from the inside outwards, a water supply, pump receiving bores for respective fuel injection pumps, coolant longitudinal channels, Valve tappet guides and coolant jackets for the cylinders. However, all of this is in one piece with the cylinder crankcase designed so that this arrangement is expensive to manufacture and is expensive.
Aus der JP-7259559 A ist es bekannt, bei einem Motor mit V-förmiger Zylinderanordnung einen separaten Kühlwasserkanal in einem V-Raum anzuordnen. Bei dieser Anordnung fließt jedoch das Kühlwasser in dem separaten Kanal zunächst vollständig an den Zylindern vorbei und wird erst stirnseitig am Motorblock in das Zylinderkurbelgehäuse eingeleitet und fließt anschließend durch die Kühlmittelmäntel der Zylinder den vollständigen Weg durch das Zylinderkurbelgehäuse zurück. Diese Anordnung hat den Nachteil, daß die Zylinder ungleichmäßig gekühlt werden, da die stirnseitigen Zylinder von relativ kühlem Wasser umspült werden, die letzten von der Stirnseite des Motorblocks abgewandt angeordneten Zylinder jedoch von Kühlwasser umspült werden, welches bereits von den vorhergehenden Zylinder erheblich vorgewärmt wurde. From JP-7259559 A it is known for an engine with a V-shaped cylinder arrangement to arrange a separate cooling water duct in a V-space. With this arrangement However, the cooling water in the separate channel initially flows completely on the cylinders over and is only introduced at the front of the engine block into the cylinder crankcase and then flows through the coolant jackets of the cylinders all the way through the Cylinder crankcase back. This arrangement has the disadvantage that the cylinders are uneven be cooled because the front cylinders are washed by relatively cool water the last cylinders facing away from the front of the engine block however, be washed by cooling water, which is already from the previous cylinder was significantly preheated.
Die DE 41 36 773 C1 beschreibt ein Verteilergehäuse für eine V-Brennkraftmaschine, wobei im V-Raum ein Verteilergehäuse mit einer ebenen Grundplatte an einem Flansch des Kurbelgehäuses der Brennkraftmaschine gehalten angeordnet ist. Dieses Verteilergehäuse integriert eine Vielzahl von üblicherweise von separat angeordneten Bauteilen übernommenen Funktionen. Das Verteilergehäuse führt dabei insbesondere Kühlwasserströme der Brennkraftmaschine, wobei jedoch lediglich Anschlußflansche zur Verfügung gestellt werden und die Kühlmittelkanäle selbst vollständig im Zylinderkurbelgehäuse auszubilden sind. Lediglich ein Wasserführungsgehäuse ist vollständig im Verteilergehäuse ausgebildet, welches jedoch lediglich als Aufnahme für einen Thermostaten und eine Wasserpumpe dient und keinerlei Verteilungsfunktion für das Kühlwasser erfüllt.DE 41 36 773 C1 describes a distributor housing for a V internal combustion engine, wherein in the V-space a distributor housing with a flat base plate on a flange of the crankcase the internal combustion engine is arranged. This distributor housing integrated a large number of components usually taken over from separately arranged components Functions. The distributor housing leads in particular cooling water flows of the internal combustion engine, but only connecting flanges are provided and the coolant channels themselves are to be completely formed in the cylinder crankcase. Only a water guide housing is completely formed in the distributor housing, which however only serves as a holder for a thermostat and a water pump and none at all Distribution function for the cooling water fulfilled.
Aus der DE-OS-2 015 546 ist ein Verbrennungsmotor mit V-förmig angeordneten Zylinderreihen bekannt, wobei jeweilige Kühlmäntel von Zylinderblock und Zylinderkopf miteinander in Verbindung stehen. Ferner ist im V-Raum ein Mehrfachanschlußstück angeordnet, welches Kanäle für eine Zufuhr eines Kraftstoff-Luftgemisches und für eine Abfuhr von Abgasen sorgen. An einem Ende des Mehrfachanschlußstückes sind Anschlüsse für Kühlmittelkanäle vorgesehen. Durch die Ausführung in mehreren diskreten Elementen ist diese Anordnung jedoch in der Herstellung und Montage kompliziert und Kostenintensiv. Ferner strömt das Kühlmittel an einer Seite aus einem Teil des Mehrfachanschlußstückes in den Zylinderblock ein, durchquert diesen entlang der Zylinderkopfreihen vollständig und strömt erst danach wieder aus dem Zylinderblock aus in ein anderes Teil des Mehrfachanschlußstückes. Dadurch ergibt sich auch hier das oben bereits erwähnte Problem einer ungleichmäßigen Kühlung des Zylinderblockes.DE-OS-2 015 546 describes an internal combustion engine with rows of cylinders arranged in a V-shape known, with respective cooling jackets of the cylinder block and cylinder head together keep in touch. Furthermore, a multiple connector is arranged in the V space, which Channels for the supply of a fuel-air mixture and for the removal of exhaust gases to care. At one end of the multiple connector are connections for coolant channels intended. This arrangement is due to the execution in several discrete elements however, complicated to manufacture and assemble and expensive. It also flows Coolant on one side from part of the multiple connector in the cylinder block on, crosses it completely along the rows of cylinder heads and only flows afterwards again from the cylinder block into another part of the multiple connector. Thereby the problem of uneven cooling mentioned above also arises here of the cylinder block.
Der vorliegenden Erfindung liegt daher die Aufgabe zugrunde, eine verbesserte Brennkraftmaschine der obengenannten Art zur Verfügung zu stellen, wobei die obengenannten Nachteile überwunden werden und für das Kühlmittelsystem eine kompakte Bauweise und optimale Nutzung des V-Raumes erzielt wird.The present invention is therefore based on the object of an improved internal combustion engine to provide the above type, the above Disadvantages are overcome and a compact design for the coolant system optimal use of the V-space is achieved.
Diese Aufgabe wird erfindungsgemäß durch eine Brennkraftmaschine der o.g. Art mit den in Anspruch 1 gekennzeichneten Merkmalen gelöst. Vorteilhafte Ausgestaltungen der Erfindung sind in den abhängigen Ansprüchen angegeben. This object is achieved by an internal combustion engine of the above. Kind of with the in Characteristics characterized claim 1 solved. Advantageous embodiments of the invention are specified in the dependent claims.
Dazu ist es erfindungsgemäß vorgesehen, daß in dem V-Raum eine mit dem Kühlmittelrücklaufkanal und den Kühlmittelabströmöffnungen der Zylinderköpfe verbundene Mischkammer unmittelbar benachbart zu einer Außenwandung der Kühlmittelmäntel der Zylinder ausgebildet ist.For this purpose, it is provided according to the invention that one with the coolant return channel in the V-space and the mixing chamber connected to the coolant outflow openings of the cylinder heads immediately adjacent to an outer wall of the coolant jacket of the cylinder is.
Dies hat den Vorteil, daß durch die benachbarte Strömung des Kühlwassers in der Mischkammer und den Kühlmittelmänteln der Zylinder eine homogenere Temperaturverteilung im Kühlmittelsystem des Zylinderkurbelgehäuses erfolgt, was zu einer gleichmäßigeren Kühlung der Brennkraftmaschine führt.This has the advantage that the adjacent flow of the cooling water in the mixing chamber and the coolant jackets of the cylinders have a more homogeneous temperature distribution in the Coolant system of the cylinder crankcase takes place, which leads to more uniform cooling the internal combustion engine leads.
Dadurch, daß die Mischkammer an einer an den V-Raum angrenzenden Seite offen ausgebildet ist, wobei ein Deckel derart angeordnet ist, daß dieser im V-Raum einen Kühlmittelzulaufkanal bildet und ein Mittel zum wahlweisen Verbinden des Kühlmittelzulaufkanals mit der Mischkammer vorgesehen ist, erzielt man auf einfache Weise mit gleichzeitig kleinem Bauraumbedarf ein Kühlmittelführungssystem durch einfaches Aufsetzten eines Deckels auf den V-Raum. Gleichzeitig ist sofort und ohne zusätzliche Maßnahmen ein Bypaß eines im Kühlkreislauf angeordneten Kühlers ausgebildet, so daß in Betriebsphasen, in denen die Brennkraftmaschine nicht eine vorbestimmte Betriebstemperatur hat, der Kühler überbrückt und dadurch schnell die vorbestimmte Betriebstemperatur erstmals oder wieder erreicht werden kann. Ferner sind Seitenwandungen der Kühlmittelkanäle kombiniert aus Deckelelementen und Zylinderkopfgehäuse-Elementen zusammengesetzt, was eine weitere Vereinfachung der Anordnung bzw. der Montage und auch späterer ggf. erforderlicher Wartungsarbeiten ergibt. Die Mischkammer und der Kühlmittelzulaufkanal sind nämlich durch einfaches demontieren des Deckels jederzeit zu Wartungs- oder Prüfzwecken zugänglich.Characterized in that the mixing chamber is open on a side adjacent to the V-space is, wherein a cover is arranged such that it has a coolant inlet channel in the V-space forms and a means for selectively connecting the coolant inlet channel with the Mixing chamber is provided, can be achieved in a simple manner with a small space requirement a coolant management system by simply placing a cover on the V space. At the same time there is a bypass in the cooling circuit immediately and without additional measures arranged cooler designed so that in operating phases in which the internal combustion engine does not have a predetermined operating temperature, the cooler bridges and thereby quickly reaching the predetermined operating temperature for the first time or again can. Furthermore, side walls of the coolant channels are combined from cover elements and cylinder head housing elements assembled, which further simplifies the arrangement or assembly and also any subsequent maintenance work that may be required results. The mixing chamber and the coolant supply channel can be easily dismantled the lid is accessible at all times for maintenance or testing purposes.
Eine einfache und kostengünstige Anordnung wird dadurch erzielt, daß das Mittel zum wahlweisen Verbinden des Kühlmittelzulaufkanals mit der Mischkammer ein Kennfeldthermostat ist.A simple and inexpensive arrangement is achieved in that the means for A map thermostat optionally connects the coolant inlet channel to the mixing chamber is.
Eine W-förmige Anordnung der Zylinder mit entsprechend kompakter Bauweise der Brennkraftmaschine erzielt man dadurch, daß zwei Zylinderreihen der V-förmigen Anordnung jeweils selbst wiederum V-förmig angeordnet sind. A W-shaped arrangement of the cylinders with a correspondingly compact design of the internal combustion engine is achieved in that two rows of cylinders of the V-shaped arrangement each themselves are arranged in a V-shape.
In einer vorteilhafte Ausführungsform ist der Deckel ferner derart ausgebildet, daß er integral einen Kühlmittelzulauf aufweist, welcher mit dem vom Deckel verschlossenen V-Raum verbunden ist, und in bevorzugter Weise ist der Deckel zusätzlich derart ausgebildet, daß er integral den mit der Mischkammer verbundenen Kühlmittelrücklaufkanal aufweist. Dies hat den Vorteil, daß mit einem Handgriff, nämlich dem Aufsetzten des Deckels, das vollständige externe Kühlmittelführungssystem des Motorblockes montiert ist.In an advantageous embodiment, the cover is also designed such that it is integral has a coolant inlet which is connected to the V-space closed by the cover is, and in a preferred manner the cover is additionally designed such that it integrally has the coolant return channel connected to the mixing chamber. this has the advantage that with one hand, namely putting on the lid, the complete external coolant management system of the engine block is mounted.
Zweckmäßigerweise ist am Deckel zusätzlich ein Temperatursensor angeordnet, welcher in den Kühlmittelrücklaufkanal hinein ragt.A temperature sensor is expediently additionally arranged on the cover, which in the coolant return duct protrudes into it.
Weitere Merkmale, Vorteile und vorteilhafte Ausgestaltungen der Erfindung ergeben sich aus den abhängigen Ansprüchen, sowie aus der nachstehenden, beispielhaften Beschreibung der Erfindung anhand der beigefügten Zeichnungen. Diese zeigen in
- Fig. 1
- eine bevorzugte Ausführungsform einer erfindungsgemäßen Brennkraftmaschine im Querschnitt und in
- Fig. 2
- im Längsschnitt.
- Fig. 1
- a preferred embodiment of an internal combustion engine according to the invention in cross section and in
- Fig. 2
- in longitudinal section.
Fig. 1 zeigt beispielhaft eine Brennkraftmaschine 10 mit einer W-förmigen Zylinderanordnung
von Zylindern 12, 14, 16 und 18 in einem Zylinderkurbelgehäuse 20. Die Brennkraftmaschine
10 umfaßt ferner jeweilige Zylinderköpfe 22 und 24, Kühlmittelmäntel 26 und 28,
Kühlmittelzuströmöffnungen 30, über die Kühlmittel in Pfeilrichtung 31 in die Zylinderköpfe
22, 24 strömt, und Kühlmittelabströmöffnungen 32, über die Kühlmittel von den Zylinderköpfen
22, 24 in Pfeilrichtung 33 wieder abströmt.1 shows an example of an
In einem V-Raum 35 ist eine Mischkammer 34 durch integral mit dem Zylinderkurbelgehäuse
gebildete Wandungen 36 und durch Wandungen 38 der Kühlmittelmäntel 26, 28 begrenzt.
Die Mischkammer 34 weist ferner an einer dem V-Raum 35 zugewandten Seite eine Öffnung
40 auf. Ein Deckel 42 verschließt den V-Raum 35 und bildet so in diesem einen Kühlmittelzulaufkanal
44 aus. Der Deckel 42 umfaßt zusätzlich ein Mittel 46, beispielsweise in Form eines
Kennfeldthermostaten, welches die Öffnung 40 wahlweise öffnet oder schließt und somit
wahlweise die Mischkammer 34 mit dem Kühlmittelzulaufkanal 44 verbindet. In a V-
In die Mischkammer 34 fließt Kühlmittel über die Kühlmittelabströmöffnungen 32 aus den
Zylinderköpfen 22, 24 ein. Wie sich weiter aus Fig. 2 ergibt ist die Mischkammer 34 zusätzlich
mit einem Kühlmittelrücklaufkanal 48 verbunden, über den das Kühlmittel zu einem nicht
dargestellten Wärmetauscher, beispielsweise in Form eines Kühlers, abfließt. Andererseits
fließt Kühlmittel zumindest teilweise unter Umgehung des Kühlers direkt in den Kühlmittelzulaufkanal
44, wenn das Mittel 46 die Öffnung 40 freigibt, wie dies mit Pfeil 47 angedeutet ist.
Über den Kühlmittelzulaufkanal 44 wird das Kühlmittel mittels Kanälen 50 jeweils zu Zylindem
bzw. deren Kühlmittelmänteln geleitet. Beispielsweise bei einem 8-Zylinder-W-Motor ist
einer der Kanäle 50 mit den Kühlmittelmänteln 26 der Zylinder 1 bis 4 und der entsprechend
andere Kanal 50 mit den Kühlmittelmänteln 28 der Zylinder 5 bis 8 verbunden. Der Kühlmittelrücklaufkanal
48 und ein Kühlmittelzulauf 52 sind integral mit dem Deckel 42 ausgebildet,
so daß durch einfaches Aufsetzten des Deckels 42 auf den V-Raum 35 mit einem Handgriff
automatisch und ohne weitere Maßnahmen Kühlmittelzulauf 52, Kühlmittelzulaufkanal 44,
Mischkammer 34 mit wahlweiser freigebbarer Öffnung 40 und Kühlmittelrücklaufkanal 48
ausgebildet sind.Coolant flows into the mixing chamber 34 via the
Der Deckel 42 umfaßt zusätzlich einen Temperatursensor 54, welcher in den Kühlmittelrücklaufkanal
44 hinein ragt und die dortige Temperatur des Kühlmittels bestimmt und in Abhängigkeit
von dieser Temperatur das Mittel 46 zum wahlweisen Öffnen oder Schließen der Öffnung
40 ansteuert.The
Eine stirnseitig angeordnete Kühlmittelpumpe 56 sorgt ferner für einen entsprechenden
Kühlmittelfluß. Hierbei tritt das Kühlmittel über die Kühlmittelpumpe 56 in das Zylinderkurbelgehäuse
20 ein und wird dort auf die Kühlmittelmäntel 26 und 28 der Zylinder 12 bis 18 verteilt.
Anschließend strömt das Kühlmittel über eine Zylinderkopfdichtung 58 (Fig. 1) und die
Kühlmittelzuströmöffnungen 30 in Pfeilrichtung 31 in die Zylinderköpfe 22 und 24 ein, durchquert
diese in einer Querströmung und strömt weiter über Kühlmittelabströmöffnungen 32
unterhalb von Einlaßflanschen 60 der Zylinderköpfe 22 und 24 wiederum über die Zylinderkopfdichtung
58 in die Mischkammer 34 und gelangt somit wieder in das Zylinderkurbelgehäuse
20. Diese Anordnung vermeidet einen stirnseitigen Austritt des Kühlmittels aus den
Zylinderköpfen. Der Deckel 42 hat dabei eine Mehrfachfunktion: Er nimmt den Thermostaten
46 auf, verschließt den V-Raum 35 und nimmt gleichzeitig den Temperatursensor 54 auf und
bildet integral einen Stutzen 62 für den Kühlervorlauf und einen Stutzen 64 für den Kühlerrücklauf.A
Claims (7)
dadurch gekennzeichnet, daß
in dem V-Raum (35) eine mit dem Kühlmittelrücklaufkanal (48) und den Kühlmittelabströmöffnungen (32) der Zylinderköpfe (22,24) verbundene Mischkammer (34) unmittelbar benachbart zu einer Außenwandung (38) der Kühlmittelmäntel (26,28) der Zylinder (12,14,16,18) ausgebildet ist.Internal combustion engine (10) with a plurality of water-cooled and V-shaped cylinders (12, 14, 16, 18) of a cylinder crankcase (20), in particular a motor vehicle, with a V-shaped space (35) between the rows of cylinders forming the V, with respective cylinders (12, 14, 16, 18) assigned coolant jackets (26, 28), the coolant from the coolant jackets (26, 28) into respective cylinder heads (22, 24) and out of these via respective coolant outflow openings (32) the cylinder crankcase (20) flows into a coolant return channel (48) arranged in the V space (35),
characterized in that
in the V-space (35) a mixing chamber (34) connected to the coolant return channel (48) and the coolant outflow openings (32) of the cylinder heads (22, 24) immediately adjacent to an outer wall (38) of the coolant jackets (26, 28) of the cylinders (12, 14, 16, 18).
dadurch gekennzeichnet, daß
die Mischkammer (34) an einer an den V-Raum (35) angrenzenden Seite offen ausgebildet ist, wobei ein Deckel (42) derart angeordnet ist, daß dieser im V-Raum (35) einen Kühlmittelzulaufkanal (44) bildet und ein Mittel (46) zum wahlweisen Verbinden des Kühlmittelzulaufkanals (44) mit der Mischkammer (44) vorgesehen ist.Internal combustion engine (10) according to claim 1,
characterized in that
the mixing chamber (34) is designed to be open on a side adjoining the V-space (35), a cover (42) being arranged such that it forms a coolant inlet channel (44) in the V-space (35) and a means ( 46) is provided for the optional connection of the coolant inlet channel (44) to the mixing chamber (44).
dadurch gekennzeichnet, daß
das Mittel (46) zum wahlweisen Verbinden des Kühlmittelzulaufkanals (44) mit der Mischkammer (34) ein Kennfeldthermostat ist.Internal combustion engine (10) according to claim 2,
characterized in that
the means (46) for selectively connecting the coolant inlet channel (44) to the mixing chamber (34) is a map thermostat.
dadurch gekennzeichnet, daß
zwei Zylinderreihen der V-förmigen Anordnung jeweils selbst wiederum V-förmig angeordnet sind.Internal combustion engine (10) according to one of the preceding claims,
characterized in that
two rows of cylinders of the V-shaped arrangement are each in turn arranged in a V-shape.
dadurch gekennzeichnet, daß
der Deckel (42) ferner derart ausgebildet ist, daß er integral einen Kühlmittelzulauf (52) aufweist, welcher mit dem vom Deckel (42) verschlossenen V-Raum (35) verbunden ist.Internal combustion engine (10) according to one of claims 2 to 4,
characterized in that
the cover (42) is also designed such that it integrally has a coolant inlet (52) which is connected to the V-space (35) closed by the cover (42).
dadurch gekennzeichnet, daß
der Deckel (42) ferner derart ausgebildet ist, daß er integral den mit der Mischkammer (34) verbundenen Kühlmittelrücklaufkanal (48) aufweist.Internal combustion engine (10) according to one of claims 2 to 5,
characterized in that
the cover (42) is further designed such that it integrally has the coolant return channel (48) connected to the mixing chamber (34).
dadurch gekennzeichnet, daß
am Deckel (42) zusätzlich ein Temperatursensor (54) angeordnet ist, welcher in den Kühlmittelrücklaufkanal (48) hinein ragt.Internal combustion engine (10) according to one of claims 2 to 6,
characterized in that
A temperature sensor (54) is also arranged on the cover (42) and projects into the coolant return channel (48).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19803808 | 1998-01-31 | ||
| DE1998103808 DE19803808A1 (en) | 1998-01-31 | 1998-01-31 | Internal combustion engine |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0933510A2 true EP0933510A2 (en) | 1999-08-04 |
| EP0933510A3 EP0933510A3 (en) | 2002-02-06 |
| EP0933510B1 EP0933510B1 (en) | 2006-11-02 |
Family
ID=7856265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19980124469 Expired - Lifetime EP0933510B1 (en) | 1998-01-31 | 1998-12-23 | Internal combustion engine |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0933510B1 (en) |
| DE (2) | DE19803808A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002081881A2 (en) | 2001-04-06 | 2002-10-17 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Water-cooled, multicylinder internal combustion engine |
| EP2071150A1 (en) * | 2007-12-13 | 2009-06-17 | Honda Motor Co., Ltd. | Cooling water passage structure for engine |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10020485A1 (en) * | 2000-04-26 | 2001-11-08 | Bayerische Motoren Werke Ag | Cooling system for a liquid-cooled internal combustion engine |
| DE10021526C2 (en) * | 2000-05-03 | 2002-07-18 | Porsche Ag | Arrangement for cooling a multi-cylinder internal combustion engine |
| DE10021525A1 (en) | 2000-05-03 | 2001-11-15 | Porsche Ag | Cooling circuit for a multi-cylinder internal combustion engine |
| DE10129933B4 (en) * | 2001-06-21 | 2013-08-08 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Water-cooled internal combustion engine, in particular for motorcycles |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2015546A1 (en) | 1969-04-02 | 1970-11-12 | Rootes Motors Ltd., London | Internal combustion engine |
| DE4136773C1 (en) | 1991-11-08 | 1992-12-17 | Dr.Ing.H.C. F. Porsche Ag, 7000 Stuttgart, De | Distributor housing for IC V-engine - has flat baseplate with top and bottom coupling plane, with latter releasably flanged to crankcase |
| JPH07259559A (en) | 1994-03-22 | 1995-10-09 | Honda Motor Co Ltd | Cooling system of v-type engine |
| EP0637682B1 (en) | 1993-08-04 | 1997-02-19 | Mercedes-Benz Ag | Water-cooled multicylinder internal combustion engine with V-configuration arranged cylinders |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1862723A (en) * | 1929-10-07 | 1932-06-14 | Gen Motors Corp | V-type engine |
| JPS59224444A (en) * | 1983-06-03 | 1984-12-17 | Mazda Motor Corp | Cooling device of v-engine |
| DE3326317A1 (en) * | 1983-07-21 | 1985-01-31 | Dr.Ing.H.C. F. Porsche Ag, 7000 Stuttgart | CYLINDER BLOCK |
| DE4001140C1 (en) * | 1990-01-17 | 1991-04-11 | Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De | Cylinder block for liquid cooled IC engine - has coolant channels in internal angle of V=shaped block |
-
1998
- 1998-01-31 DE DE1998103808 patent/DE19803808A1/en not_active Ceased
- 1998-12-23 EP EP19980124469 patent/EP0933510B1/en not_active Expired - Lifetime
- 1998-12-23 DE DE59813786T patent/DE59813786D1/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2015546A1 (en) | 1969-04-02 | 1970-11-12 | Rootes Motors Ltd., London | Internal combustion engine |
| DE4136773C1 (en) | 1991-11-08 | 1992-12-17 | Dr.Ing.H.C. F. Porsche Ag, 7000 Stuttgart, De | Distributor housing for IC V-engine - has flat baseplate with top and bottom coupling plane, with latter releasably flanged to crankcase |
| EP0637682B1 (en) | 1993-08-04 | 1997-02-19 | Mercedes-Benz Ag | Water-cooled multicylinder internal combustion engine with V-configuration arranged cylinders |
| JPH07259559A (en) | 1994-03-22 | 1995-10-09 | Honda Motor Co Ltd | Cooling system of v-type engine |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002081881A2 (en) | 2001-04-06 | 2002-10-17 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Water-cooled, multicylinder internal combustion engine |
| WO2002081881A3 (en) * | 2001-04-06 | 2004-09-10 | Porsche Ag | Water-cooled, multicylinder internal combustion engine |
| US6880496B2 (en) | 2001-04-06 | 2005-04-19 | Dr. Ing. H.C.F. Porsche Ag | Water-cooled multi-cylinder internal-combustion engine |
| DE10117090B4 (en) * | 2001-04-06 | 2013-08-14 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Water-cooled, multi-cylinder internal combustion engine |
| EP2071150A1 (en) * | 2007-12-13 | 2009-06-17 | Honda Motor Co., Ltd. | Cooling water passage structure for engine |
| US8225751B2 (en) | 2007-12-13 | 2012-07-24 | Honda Motor Co., Ltd. | Cooling water passage structure for engine |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0933510B1 (en) | 2006-11-02 |
| DE59813786D1 (en) | 2006-12-14 |
| EP0933510A3 (en) | 2002-02-06 |
| DE19803808A1 (en) | 1999-08-05 |
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