EP1474592A2 - Water-cooled, multicylinder internal combustion engine - Google Patents

Water-cooled, multicylinder internal combustion engine

Info

Publication number
EP1474592A2
EP1474592A2 EP02718205A EP02718205A EP1474592A2 EP 1474592 A2 EP1474592 A2 EP 1474592A2 EP 02718205 A EP02718205 A EP 02718205A EP 02718205 A EP02718205 A EP 02718205A EP 1474592 A2 EP1474592 A2 EP 1474592A2
Authority
EP
European Patent Office
Prior art keywords
water
cooled
internal combustion
combustion engine
housing
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
Application number
EP02718205A
Other languages
German (de)
French (fr)
Other versions
EP1474592B1 (en
Inventor
Manfred Batzill
Falk Schulkowski
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dr Ing HCF Porsche AG
Original Assignee
Dr Ing HCF Porsche AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dr Ing HCF Porsche AG filed Critical Dr Ing HCF Porsche AG
Publication of EP1474592A2 publication Critical patent/EP1474592A2/en
Application granted granted Critical
Publication of EP1474592B1 publication Critical patent/EP1474592B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • 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
    • 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
    • F01P2070/00—Details
    • 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

Definitions

  • the invention is based on a water-cooled, multi-cylinder internal combustion engine according to the features of the preamble of claim 1.
  • a water-cooled internal combustion engine is known from EP 0 933 510 A2, in which a thermostat controlling the two cooling circuits is arranged in a thermostat housing surrounding it between the two cylinder banks.
  • the thermostat housing consists of one piece with the
  • the object of the invention is to develop a thermostat housing for a water-cooled multi-cylinder internal combustion engine, which is characterized by a simple, streamlined and weight-optimized structure, which also takes up little space. i
  • the object is achieved by the features specified in claim 1.
  • the proposed insert according to the invention forms water chambers, the openings of which are monitored by the thermostatic valve.
  • the insert is simple to manufacture and expensive wall sections which are usually necessary in the lower part of the thermostat housing can be dispensed with.
  • FIG. 1 is a plan view of a water-cooled, multi-cylinder internal combustion engine
  • FIG. 2 is an exploded view of a thermostat housing
  • FIG. 3 is a plan view of the upper part of a thermostat housing
  • FIG. 5 is a sectional view taken along the line V - V in Fig. 3,
  • Fig. 6 is a sectional view taken along the line V - V in Fig. 3 in a second position of the thermostatic valve and
  • FIG. 7 is a sectional view taken along the line VII - VII in Fig. 3rd
  • the crankcase upper part 2 of a V8 engine shown in FIG. 1 has a cooling jacket enclosing cylinders 1 to 4 and 5 to 8 for each row of cylinder banks.
  • a water pump 6 is arranged on an end face 4 of the internal combustion engine.
  • the water pump 6 consists of a cover part 8, in which the water pump wheel 10 is mounted.
  • the housing 12 of the water pump 6, which is formed in one piece from the crankcase upper part 2, is arranged between the two rows of cylinders.
  • an intake port 14 is provided in the housing 12, which merges into a lower part 18 of a thermostat housing forming a first coolant return chamber 16, the lower part 18 being formed in one piece from the upper crankcase part 2.
  • a thermostat insert 20 is inserted, which is screwed into the lower part 18 of the thermostat housing with the aid of fasteners, not shown.
  • the trough-shaped insert 20, for example made of die-cast aluminum, has at its bottom a cylindrical opening 22, which, as described in more detail below, through a first valve plate 24 of a thermostatic valve 26 is monitored.
  • the thermostat insert 20 has a further opening 30 provided with a connector 28 in the lateral wall area.
  • the connector 28 is inserted into the intake connector 14 of the water pump housing 12 in a sealing manner via an O-ring 32.
  • the thermostat housing is closed by an upper part 34, which is sealed with its flange surface 36 against the flange surface 38 of the lower part 18.
  • an inner flange surface 40 is provided, which runs according to the dashed line (see FIG. 4), which seals in the assembled state against the tub rim 42 of the insert part 20 and thereby a second coolant return chamber 44 in the insert part 20 is formed.
  • the thermostat upper part 34 has a connecting piece 46 leading to a cooler, not shown, which is in communication with the first coolant return chamber 16.
  • a second connecting piece 48 for the cooling water flowing back from the cooler is connected to the second coolant return chamber 44 via an opening 50 formed in the return piece 48.
  • the opening 50 is monitored via a second valve plate 52 of the thermostatic valve 26.
  • a holding plate 54 is provided, which is fastened to two holding webs 56 and 58, which are cast on the flange side of the thermostatic upper part 34.
  • the small coolant circuit is activated: For this purpose, the opening 22 provided in the bottom area of the insert 20 is released through the valve plate 24 (see FIG. 5), so that the coolant flowing back from the rows of cylinder banks from the first coolant return chamber 16 enters the second return chamber 44. Since the opening 50 is closed by the second valve plate 52, the coolant is via the intake port 14 of the water pump 6 Water pump wheel 10 conveyed into a coolant tube 60 and from there in turn reaches the cooling jackets arranged in the two rows of cylinder banks.
  • the cooler circuit is also included.
  • the opening 22 is closed by the first valve plate 24, while the opening 50 controlled by the second valve plate 52 is released to the cooler return (return pipe 48).
  • the coolant flowing back from the cylinder banks passes into the first return chamber 16 and is then led to the cooler via the flow connector 46; the coolant cooled by the cooler returns to the second return chamber 44 via the return pipe 48 and from there it is guided again via the intake pipe 14 of the water pump 6 and with the help of the water pump wheel 10 via the coolant pipe 60 to the cylinder banks.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)

Abstract

The invention relates to a water-cooled, multicylinder internal combustion engine, comprising a crank housing and cooling channels that surround the cylinders and that are impinged upon with a coolant via a pump in a cooling circuit (small cooling circuit), with a thermostat being provided in a housing for switching to a big cooling circuit with a radiator. The thermostat housing consists of an upper part provided with coolant supplies and a lower part that is preferably integrated in the crankcase. The invention is especially characterized in that in the lower part of the thermostat housing an insert is inserted that has at least one opening controlled by the thermostat valve to control the small and the big cooling circuit.

Description

Wassergekühlte, mehrzylindrige Brennkraftmaschine Water-cooled, multi-cylinder internal combustion engine
Die Erfindung geht aus von einer wassergekühlten, mehrzylindrigen Brennkraftmaschine nach den Merkmalen des Oberbegriffs des Anspruchs 1.The invention is based on a water-cooled, multi-cylinder internal combustion engine according to the features of the preamble of claim 1.
> Aus der EP 0 933 510 A2 ist eine wassergekühlte Brennkraftmaschine bekannt, bei der zwischen den beiden Zylinderbänken ein die beiden Kühlkreisläufe steuernder Thermostat in einem ihn umgebenden Thermostatgehäuse angeordnet ist. Soweit aus den Zeichnungen erkennbar, besteht das Thermostatgehäuse aus einem einstückig mit demA water-cooled internal combustion engine is known from EP 0 933 510 A2, in which a thermostat controlling the two cooling circuits is arranged in a thermostat housing surrounding it between the two cylinder banks. As far as can be seen from the drawings, the thermostat housing consists of one piece with the
) Kurbelgehäuseoberteil verbundenen Unterteil und einem Thermostatdeckel, an dem entsprechende Zu- bzw. Ablaufstutzen angeformt sind. Zur Steuerung der beiden Kühlkreisläufe (kleiner Kühlkreislauf - großer Kühlkreislauf) sind im Unterteil entsprechende Wandabschnitte vorgesehen sein, durch die entsprechende vom Thermostat kontrollierbare Kammern gebildet sind.) Upper part connected to the crankcase and a thermostatic cover on which the corresponding inlet and outlet connections are molded. To control the two cooling circuits (small cooling circuit - large cooling circuit), corresponding wall sections are provided in the lower part, through which corresponding chambers controllable by the thermostat are formed.
» Aufgabe der Erfindung ist es, für eine wassergekühlte mehrzylindrige Brennkraftmaschine ein den Thermostat aufnehmendes Gehäuse zu entwickeln, das sich durch einen einfachen, strömungsgünstigen und gewichtsoptimierten Aufbau auszeichnet, der darüber hinaus wenig Bauraum in Anspruch nimmt. i Die Aufgabe wird durch die im Anspruch 1 angegebenen Merkmale gelöst.»The object of the invention is to develop a thermostat housing for a water-cooled multi-cylinder internal combustion engine, which is characterized by a simple, streamlined and weight-optimized structure, which also takes up little space. i The object is achieved by the features specified in claim 1.
Durch das vorgeschlagene erfindungsgemäße Einlegeteil werden Wasserkammern gebildet, deren Öffnungen durch das Thermostatventil überwacht sind. Das Einlegeteil ist i einfach herzustellen und aufwendige im Unterteil des Thermostatgehäuses üblicherweise notwenige Wandabschnitte können entfallen.The proposed insert according to the invention forms water chambers, the openings of which are monitored by the thermostatic valve. The insert is simple to manufacture and expensive wall sections which are usually necessary in the lower part of the thermostat housing can be dispensed with.
Weitere Vorteile und vorteilhafte Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen und der Beschreibung. Ein Ausführungsbeispiel der Erfindung ist in der nachfolgenden Beschreibung und Zeichnung näher erläutert. Letztere zeigt inFurther advantages and advantageous developments of the invention result from the subclaims and the description. An embodiment of the invention is explained in more detail in the following description and drawing. The latter shows in
Fig. 1 eine Draufsicht auf eine wassergekühlte, mehrzylindrige Brennkraftmaschine, Fig. 2 eine Explosionsdarstellung eines Thermostatgehäuses,1 is a plan view of a water-cooled, multi-cylinder internal combustion engine, FIG. 2 is an exploded view of a thermostat housing,
Fig. 3 eine Draufsicht auf das Oberteil eines Thermostatgehäuses,3 is a plan view of the upper part of a thermostat housing,
Fig. 4 eine Ansicht auf das Oberteil des Thermostatgehäuses von unten,4 is a view of the top of the thermostat housing from below,
Fig. 5 eine Schnittdarstellung entlang der Linie V - V in Fig. 3,5 is a sectional view taken along the line V - V in Fig. 3,
Fig. 6 eine Schnittdarstellung entlang der Linie V - V in Fig. 3 in einer zweiten Stellung des Thermostatventils undFig. 6 is a sectional view taken along the line V - V in Fig. 3 in a second position of the thermostatic valve and
Fig. 7 eine Schnittdarstellung entlang der Linie VII - VII in Fig. 3.7 is a sectional view taken along the line VII - VII in Fig. 3rd
Beschreibung des AusführungsbeispielsDescription of the embodiment
Das in Fig. 1 dargestellte Kurbelgehäuseoberteil 2 eines V8 - Motors weist für jede Zylinderbankreihe einen die Zylinder 1 bis 4 und 5 bis 8 umschließenden Kühlmantel auf. Zur Erzeugung einer Zwangsströmung in den Kühlmänteln ist an einer Stirnseite 4 der Brennkraftmaschine eine Wasserpumpe 6 angeordnet. Die Wasserpumpe 6 besteht aus einem Deckelteil 8, in dem das Wasserpumpenrad 10 gelagert ist. Zwischen den beiden Zylinderreihen ist das Gehäuse 12 der Wasserpumpe 6 angeordnet, das einstückig aus dem Kurbelgehäuseoberteil 2 herausgebildet ist. Koaxial zum Wasserpumpenrad 10 ist im Gehäuse 12 ein Ansaugstutzen 14 vorgesehen, der in ein eine erste Kühlmittel - Rücklaufkammer 16 bildendes Unterteil 18 eines Thermostatgehäuses übergeht, wobei das Unterteil 18 einstückig aus dem Kurbelgehäuseoberteil 2 herausgebildet ist. In die erste Kühlmittel- Rücklauf kammer 16 ist ein Thermostat- Einlegeteil 20 eingesetzt, das mit Hilfe von nicht dargestellten Befestigungsmitteln im Unterteil 18 des Thermostatgehäuses verschraubt ist. Das wannenförmig ausgebildete und beispielsweise aus Aluminium- Druckguss hergestellte Einlegteil 20 weist an seinem Boden eine zylindrische Öffnung 22 auf, die wie im folgenden noch näher beschrieben, durch einen ersten Ventilteller 24 eines Thermostatventils 26 überwacht ist. Das Thermostat - Einlegeteil 20 weist im seitlichen Wandbereich eine weitere, mit einem Stutzen 28 versehene Öffnung 30 auf. Der Stutzen 28 ist dabei in den Ansaugstutzen 14 des Wasserpumpengehäuses 12 über einen 0 - Ring 32 dichtend eingesteckt. Das Thermostatgehäuse wird durch ein Oberteil 34 abgeschlossen, das mit seiner Flanschfläche 36 gegenüber der Flanschfläche 38 des Unterteils 18 abgedichtet ist.The crankcase upper part 2 of a V8 engine shown in FIG. 1 has a cooling jacket enclosing cylinders 1 to 4 and 5 to 8 for each row of cylinder banks. To generate a forced flow in the cooling jackets, a water pump 6 is arranged on an end face 4 of the internal combustion engine. The water pump 6 consists of a cover part 8, in which the water pump wheel 10 is mounted. The housing 12 of the water pump 6, which is formed in one piece from the crankcase upper part 2, is arranged between the two rows of cylinders. Coaxial to the water pump wheel 10, an intake port 14 is provided in the housing 12, which merges into a lower part 18 of a thermostat housing forming a first coolant return chamber 16, the lower part 18 being formed in one piece from the upper crankcase part 2. In the first coolant return chamber 16, a thermostat insert 20 is inserted, which is screwed into the lower part 18 of the thermostat housing with the aid of fasteners, not shown. The trough-shaped insert 20, for example made of die-cast aluminum, has at its bottom a cylindrical opening 22, which, as described in more detail below, through a first valve plate 24 of a thermostatic valve 26 is monitored. The thermostat insert 20 has a further opening 30 provided with a connector 28 in the lateral wall area. The connector 28 is inserted into the intake connector 14 of the water pump housing 12 in a sealing manner via an O-ring 32. The thermostat housing is closed by an upper part 34, which is sealed with its flange surface 36 against the flange surface 38 of the lower part 18.
Auf der Unterseite des Thermostat - Oberteils 34 ist eine entsprechend der gestrichelt dargestellten Linie (siehe Fig. 4) verlaufende innere Flanschfläche 40 vorgesehen, die im montierten Zustand gegenüber dem Wannenrand 42 des Einlegeteils 20 abdichtet und wodurch im Einlegteil 20 eine zweite Kühlmittel - Rücklaufkammer 44 gebildet ist. Das Thermostat- Oberteil 34 weist einen zu einem nicht dargestellten Kühler führenden Anschlussstutzen 46 auf, der mit der ersten Kühlmittel- Rücklauf kammer 16 in Verbindung steht. Ein zweiter Anschlussstutzen 48 für das vom Kühler zurückfließende Kühlwasser steht über eine im Rücklaufstutzen 48 ausgebildete Öffnung 50 mit der zweiten Kühlmittel- Rücklaufkammer 44 in Verbindung. Die Öffnung 50 wird dabei über einen zweiten Ventilteller 52 des Thermostatventils 26 überwacht. Zur Befestigung des Thermostatventils ist ein Halteblech 54 vorgesehen, das an zwei Haltestegen 56 und 58 befestigt ist, die auf der Flanschseite des Thermostat- Oberteils 34 angegossen sind.On the underside of the thermostatic upper part 34, an inner flange surface 40 is provided, which runs according to the dashed line (see FIG. 4), which seals in the assembled state against the tub rim 42 of the insert part 20 and thereby a second coolant return chamber 44 in the insert part 20 is formed. The thermostat upper part 34 has a connecting piece 46 leading to a cooler, not shown, which is in communication with the first coolant return chamber 16. A second connecting piece 48 for the cooling water flowing back from the cooler is connected to the second coolant return chamber 44 via an opening 50 formed in the return piece 48. The opening 50 is monitored via a second valve plate 52 of the thermostatic valve 26. To fix the thermostatic valve, a holding plate 54 is provided, which is fastened to two holding webs 56 and 58, which are cast on the flange side of the thermostatic upper part 34.
Im folgenden wird anhand des vorliegenden Ausführungsbeispiels das an sich bekannte Umschalten vom kleinen Kühlmittelkreislauf zum großen Kühlmittelkreislauf, in dem ein entsprechender Kühler mit einbezogen ist, erläutert:The switching from the small coolant circuit to the large coolant circuit, in which a corresponding cooler is included, is explained below using the present exemplary embodiment:
In der Warmlaufphase des Motors ist der kleine Kühlmittelkreislauf aktiviert: Dazu ist die im Bodenbereich des Einlegeteils 20 vorgesehene Öffnung 22 durch den Ventilteller 24 freigegeben (siehe Fig. 5), so dass das aus den Zylinderbankreihen zurückströmende Kühlmittel von der ersten Kühlmittel - Rücklauf kammer 16 in die zweite Rücklaufkammer 44 gelangt. Da durch den zweiten Ventilteller 52 die Öffnung 50 verschlossen ist, wird über den Ansaugstutzen 14 der Wasserpumpe 6 das Kühlmittel über das Wasserpumpenrad 10 in ein Kühlmittelrohr 60 gefördert und gelangt von dort aus wiederum zu den in den beiden Zylinderbankreihen angeordneten Kühlmänteln.In the warm-up phase of the engine, the small coolant circuit is activated: For this purpose, the opening 22 provided in the bottom area of the insert 20 is released through the valve plate 24 (see FIG. 5), so that the coolant flowing back from the rows of cylinder banks from the first coolant return chamber 16 enters the second return chamber 44. Since the opening 50 is closed by the second valve plate 52, the coolant is via the intake port 14 of the water pump 6 Water pump wheel 10 conveyed into a coolant tube 60 and from there in turn reaches the cooling jackets arranged in the two rows of cylinder banks.
Neben dem soeben beschriebenen kleinen Kühlmittelkreislauf wird nach dem Erreichen der Betriebstemperatur der Brennkraftmaschine auf den großen Kühlmittelkreislauf umgeschaltet, bei dem der Kühlerkreislauf mit einbezogen ist. In diesem Fall wird, wie in Fig. 6 dargestellt, durch den ersten Ventilteller 24 die Öffnung 22 verschlossen, während die durch den zweiten Ventilteller 52 kontrollierte Öffnung 50 zum Kühlerrücklauf (Rücklaufstutzen 48) freigegeben ist. Das aus den Zylinderbänken zurückströmende Kühlmittel gelangt in die erste Rücklaufkammer 16 und wird dann über den Vorlaufstutzen 46 zum Kühler geführt; das durch den Kühler abgekühlte Kühlmittel gelangt über den Rücklaufstutzen 48 in die zweite Rücklaufkammer 44 zurück und wird von dort aus wieder über den Ansaugstutzen 14 der Wasserpumpe 6 und mit Hilfe des Wasserpumpenrades 10 über das Kühlmittelrohr 60 zu den Zylinderbänken geführt. In addition to the small coolant circuit just described, after reaching the operating temperature of the internal combustion engine, a switch is made to the large coolant circuit, in which the cooler circuit is also included. In this case, as shown in FIG. 6, the opening 22 is closed by the first valve plate 24, while the opening 50 controlled by the second valve plate 52 is released to the cooler return (return pipe 48). The coolant flowing back from the cylinder banks passes into the first return chamber 16 and is then led to the cooler via the flow connector 46; the coolant cooled by the cooler returns to the second return chamber 44 via the return pipe 48 and from there it is guided again via the intake pipe 14 of the water pump 6 and with the help of the water pump wheel 10 via the coolant pipe 60 to the cylinder banks.

Claims

Patentansprüche claims
1. Wassergekühlte, mehrzylindrige Brennkraftmaschine mit einem Kurbelgehäuse und die Zylinder umgebende Kühlkanäle, die über eine Pumpe in einem Kühlkreislauf mit Kühlmittel beaufschlagt sind (kleiner Kühlkreislauf), wobei zum Umschalten auf einen mit einem Kühler versehenen großen Kühlkreislauf ein in einem Gehäuse eingesetzter Thermostat vorgesehen ist, wobei das Thermostatgehäuse aus einem mit Kühlmittelanschlüssen versehenen Oberteil und einem vorzugsweise im Kurbelgehäuse integrierten Unterteil besteht, dadurch gekennzeichnet, dass im Unterteil (18) des Thermostatgehäuses ein Einlegeteil (20) eingesetzt ist, das mindestens eine Öffnung (22, 50) aufweist, die vom Thermostatventil (26) zur Steuerung des kleinen und des großen Kühlkreislaufs überwacht ist.1.Water-cooled, multi-cylinder internal combustion engine with a crankcase and cooling ducts surrounding the cylinders, which are supplied with coolant via a pump in a cooling circuit (small cooling circuit), a thermostat inserted in a housing being provided for switching over to a large cooling circuit provided with a cooler , wherein the thermostat housing consists of an upper part provided with coolant connections and a lower part preferably integrated in the crankcase, characterized in that an insert part (20) is inserted in the lower part (18) of the thermostatic housing, which has at least one opening (22, 50) which is monitored by the thermostatic valve (26) to control the small and large cooling circuits.
2. Wassergekühlte, mehrzylindrige Brennkraftmaschine nach Anspruch 1, dadurch gekennzeichnet, dass das Einlegeteil (20) eine mit einem Stutzen (28) versehene2. Water-cooled, multi-cylinder internal combustion engine according to claim 1, characterized in that the insert (20) is provided with a nozzle (28)
Öffnung (30) aufweist, wobei der Stutzen (28) in einen Ansaugstutzen (14) eingreift, der zur Saugseite der Wasserpumpe (6) führt.Has opening (30), wherein the connector (28) engages in an intake connector (14) which leads to the suction side of the water pump (6).
3. Wassergekühlte, mehrzylindrige Brennkraftmaschine nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass zwischen dem Einlegeteil (20) und dem Unterteil (18) des Thermostatgehäuses eine erste Kühlmittel- Rücklauf kammer (16) ausgebildet ist.3. Water-cooled, multi-cylinder internal combustion engine according to claim 1 or 2, characterized in that a first coolant return chamber (16) is formed between the insert (20) and the lower part (18) of the thermostat housing.
4. Wassergekühlte, mehrzylindrige Brennkraftmaschine nach Anspruch 3, dadurch gekennzeichnet, dass das wannenförmige Einlegeteil (20) nach oben hin durch das Oberteil (34) des Thermostatgehäuses abgeschlossen ist und eine zweite4. Water-cooled, multi-cylinder internal combustion engine according to claim 3, characterized in that the trough-shaped insert (20) is closed at the top by the upper part (34) of the thermostat housing and a second
Rücklaufkammer (44) gebildet ist, die über die vom Thermostatventil (26) überwachte Öffnung (22) mit der ersten Rücklauf kammer (16) in Verbindung steht.Return chamber (44) is formed, which is connected via the opening (22) monitored by the thermostatic valve (26) to the first return chamber (16).
5. Wassergekühlte, mehrzylindrige Brennkraftmaschine nach Anspruch 4, dadurch gekennzeichnet, dass das Oberteil (34) des Thermostatgehäuses mit einem Kühler - Vorlaufstutzen (46) und einem Kühler - Rücklaufstutzen (48) versehen ist, wobei der Vorlaufstutzen (46) mit der ersten Rücklaufkammer (16) und die Öffnung (50) des Kühler - Rücklaufstutzens (48) mit der zweiten Rücklaufkammer (44) in Verbindung steht und dass die Öffnung (50) des Rücklaufstutzens (48) durch einen zweiten Ventilteller (52) des Thermostats überwacht ist.5. Water-cooled, multi-cylinder internal combustion engine according to claim 4, characterized in that the upper part (34) of the thermostat housing with a cooler - Flow connection (46) and a cooler return connection (48) is provided, the flow connection (46) with the first return chamber (16) and the opening (50) of the cooler return connection (48) with the second return chamber (44) in connection stands and that the opening (50) of the return pipe (48) is monitored by a second valve plate (52) of the thermostat.
6. Wassergekühlte, mehrzylindrige Brennkraftmaschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Unterteil (18) des Thermostatgehäuses zusammen mit einem Pumpengehäuse (12) im Kurbelgehäuseoberteil (2) eingegossen ist.6. Water-cooled, multi-cylinder internal combustion engine according to one of the preceding claims, characterized in that the lower part (18) of the thermostat housing is cast together with a pump housing (12) in the crankcase upper part (2).
7. Wassergekühlte, mehrzylindrige Brennkraftmaschine nach Anspruch 6, dadurch gekennzeichnet, dass das Kurbelgehäuseoberteil (2) zwei V- förmig zueinander angeordnete Zylinderbänke aufnimmt, zwischen denen an der einen Stirnseite (4) das Unterteil des Thermostatgehäuses eingegossen ist. 7. Water-cooled, multi-cylinder internal combustion engine according to claim 6, characterized in that the crankcase upper part (2) receives two V-shaped cylinder banks, between which the lower part of the thermostat housing is cast on one end face (4).
EP02718205A 2001-04-06 2002-03-27 Water-cooled, multicylinder internal combustion engine Expired - Lifetime EP1474592B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10117090 2001-04-06
DE10117090A DE10117090B4 (en) 2001-04-06 2001-04-06 Water-cooled, multi-cylinder internal combustion engine
PCT/EP2002/003407 WO2002081881A2 (en) 2001-04-06 2002-03-27 Water-cooled, multicylinder internal combustion engine

Publications (2)

Publication Number Publication Date
EP1474592A2 true EP1474592A2 (en) 2004-11-10
EP1474592B1 EP1474592B1 (en) 2008-03-05

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EP02718205A Expired - Lifetime EP1474592B1 (en) 2001-04-06 2002-03-27 Water-cooled, multicylinder internal combustion engine

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US (1) US6880496B2 (en)
EP (1) EP1474592B1 (en)
JP (1) JP2004538410A (en)
DE (2) DE10117090B4 (en)
WO (1) WO2002081881A2 (en)

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JP2004538410A (en) 2004-12-24
DE10117090B4 (en) 2013-08-14
US6880496B2 (en) 2005-04-19
DE50211863D1 (en) 2008-04-17
WO2002081881A3 (en) 2004-09-10
DE10117090A1 (en) 2002-10-17
EP1474592B1 (en) 2008-03-05
US20040123816A1 (en) 2004-07-01
WO2002081881A2 (en) 2002-10-17

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