EP1227236B1 - Crankcase for a liquid cooled piston combustion engine - Google Patents

Crankcase for a liquid cooled piston combustion engine Download PDF

Info

Publication number
EP1227236B1
EP1227236B1 EP01130052A EP01130052A EP1227236B1 EP 1227236 B1 EP1227236 B1 EP 1227236B1 EP 01130052 A EP01130052 A EP 01130052A EP 01130052 A EP01130052 A EP 01130052A EP 1227236 B1 EP1227236 B1 EP 1227236B1
Authority
EP
European Patent Office
Prior art keywords
flow
cooling chamber
influencing element
crankcase
combustion engine
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP01130052A
Other languages
German (de)
French (fr)
Other versions
EP1227236A3 (en
EP1227236A2 (en
Inventor
Uwe Brendel
Rudolf Gibisch
Georg Malek
Armin Oetter
Axel Temmesfeld
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.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke 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 Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Publication of EP1227236A2 publication Critical patent/EP1227236A2/en
Publication of EP1227236A3 publication Critical patent/EP1227236A3/en
Application granted granted Critical
Publication of EP1227236B1 publication Critical patent/EP1227236B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/02—Cylinders; Cylinder heads  having cooling means
    • F02F1/10—Cylinders; Cylinder heads  having cooling means for liquid cooling
    • F02F1/14—Cylinders with means for directing, guiding or distributing liquid stream
    • 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
    • F01P3/02—Arrangements for cooling cylinders or cylinder heads
    • 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
    • F01P3/02—Arrangements for cooling cylinders or cylinder heads
    • F01P2003/021—Cooling cylinders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/02—Cylinders; Cylinder heads  having cooling means
    • F02F1/10—Cylinders; Cylinder heads  having cooling means for liquid cooling
    • F02F2001/104—Cylinders; Cylinder heads  having cooling means for liquid cooling using an open deck, i.e. the water jacket is open at the block top face
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2251/00—Material properties
    • F05C2251/04—Thermal properties
    • F05C2251/048—Heat transfer

Definitions

  • the invention relates to a crankcase for a liquid-cooled reciprocating internal combustion engine, in which a common cooling chamber for all cylinders is arranged, and in which at least one flow-influencing element is provided.
  • the invention is based on US Pat. No. 4,461,247.
  • a crankcase for a liquid-cooled reciprocating internal combustion engine is described.
  • a common cooling chamber for all cylinders is arranged, in which at least one flow-influencing element is provided.
  • This is integrally molded with the crankcase, wherein the flow-influencing element extends over at least half the length of the cooling space and divides the cooling space into an upper cooling space and a lower cooling space.
  • the upper cooling space and the lower cooling space are connected to each other through openings or bores in the flow-influencing element.
  • a disadvantage of this arrangement are very complex geometric change measures to the internal combustion engine when the cooling of the cylinder must be changed.
  • the object of the invention is to show a simpler separation of the cooling space in an upper cooling chamber and a lower cooling chamber, with later geometric changes are easy to carry out.
  • the embodiment of the invention advantageously facilitates changes to the cylinder cooling.
  • it allows easy installation, for example as a pinch or plug-in solution. Changes to the cooling are thus fast, easy and inexpensive, without changing the geometry of the crankcase.
  • the flow influencing by the flow-influencing element is even better controllable and a clamp assembly is easily possible by this geometry.
  • Claim 3 again supports the advantages of claim 2.
  • An embodiment according to claim 4 ensures maintenance-free operation. Moreover, can be produced with the different materials different advantageous component properties, such. B. the realization of hard or elastic parts.
  • An apparatus according to claim 6 helps to secure the flow-influencing element at positions mechanically highly loaded by flow resistances against slipping.
  • a production according to claim 7 provides simple and inexpensive production and a cost-effective and easy installation.
  • Figure 1 shows a section through an open-deck crankcase 1, which extends centrally through a cylinder 2 with a cylinder axis 2a.
  • crankcase 1 On both sides of the cylinder, equidistant from the cylinder axis 2 a, two cooling chambers 3, 3 'are arranged in the crankcase 1.
  • Open deck crankcase means that the cooling chambers 3, 3 'are sealed in the crankcase 1 with respect to a cylinder head, not shown, only by a cylinder head gasket 8 with coolant passage openings 9, 9'.
  • the cylinder head gasket opposite side of the cylinder 2 opens into a crank chamber 10 of a reciprocating internal combustion engine, not shown.
  • the rib 6 and the flow-influencing element 4 ' are located in the plane of the upper piston reversal of the piston, not shown here, which is moved in the cylinder 2 in the direction of the cylinder axis 2a up and down.
  • a coolant pump conveys the coolant through an opening (not shown) into the upper coolant chambers 3a, 3'a.
  • the coolant through the openings 5, 5' and the coolant passage openings 9, 9 'from the upper coolant chambers 3a, 3'a in the lower Coolant chambers 3b, 3'b and distributed in the cylinder head, not shown.
  • the coolant can also at least in some areas from the cylinder head through the coolant passage openings 9, 9 'in the upper cooling chambers 3a, 3'a and from there into the lower cooling chambers 3b, 3'b be pressed.
  • the openings 5, 5 'and the coolant passage openings 9, 9' are dimensioned such that in the lower cooling chambers 3b, 3'b only a very weak flow and in the upper cooling chambers 3a, 3'a a large flow velocity in the direction of not adjusted cylinder head. Due to the correct dimensioning a homogeneous temperature distribution in the cylinder wall in the direction of the cylinder axis 2a is ensured in areas with low heat input and in areas with large heat input.
  • the flow-influencing element 4 is shaped such that the ribs 6, 6 'additionally act as holding elements during assembly. Furthermore, they also take on the task to direct the coolant targeted to the cylinder 2. For additional clamping of the flow-influencing element 4 surface curvatures 7, 7 'are present. The areas of surface curvature are elastic but may be stiff.
  • Portions of the flow-influencing element 4 ' are on the cylinder side and the crankcase side interlocked with each other, which also surface curvatures 7' are achieved. Again, these serve as mounting aid when installed in the cooling chamber 3 ', wherein the resilient action of the surface curvature 7' is utilized to key the flow-influencing element 4 'between the crankcase wall and the cylinder wall.
  • the cooling system can be designed both as a cooling system with a coolant circuit and as a split-cooling system.
  • Split-cooling system means the use of two separate coolant circuits for a reciprocating internal combustion engine.
  • a cooling circuit cools the crankcase 1, wherein the coolant flow is in turn divided among the upper cooling chambers 3a, 3'a and the lower cooling chambers 3b, 3'b and the coolant is also discharged from the upper cooling chambers 3a, 3'a again.
  • Another cooling circuit cools the cylinder head, not shown.
  • the coolant temperature in each flow area is controlled by two separate controllers.

Landscapes

  • 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)

Description

Die Erfindung betrifft ein Kurbelgehäuse für eine flüssigkeitsgekühlte Hubkolben-Brennkraftmaschine, in dem ein für alle Zylinder gemeinsamer Kühlraum angeordnet ist, und in dem mindestens ein strömungsbeeinflussendes Element vorgesehen ist.The invention relates to a crankcase for a liquid-cooled reciprocating internal combustion engine, in which a common cooling chamber for all cylinders is arranged, and in which at least one flow-influencing element is provided.

Die Erfindung geht aus von dem US Patent 4,461,247 aus. In dieser ist ein Kurbelgehäuse für eine flüssigkeitsgekühlte Hubkolben-Brennkraftmaschine beschrieben. In dem Kurbelgehäuse ist ein für alle Zylinder gemeinsamer Kühlraum angeordnet, in dem mindestens ein strömungsbeeinflussendes Element vorgesehen ist. Dieses ist einstückig mit dem Kurbelgehäuse gegossen, wobei sich das strömungsbeeinflussende Element über mindestens die halbe Länge des Kühlraumes erstreckt und den Kühlraum in einen oberen Kühlraum und einen unteren Kühlraum aufteilt. Der obere Kühlraum und der untere Kühlraum sind durch Öffnungen, bzw. Bohrungen in dem strömungsbeeinflussenden Element miteinander verbunden.The invention is based on US Pat. No. 4,461,247. In this, a crankcase for a liquid-cooled reciprocating internal combustion engine is described. In the crankcase, a common cooling chamber for all cylinders is arranged, in which at least one flow-influencing element is provided. This is integrally molded with the crankcase, wherein the flow-influencing element extends over at least half the length of the cooling space and divides the cooling space into an upper cooling space and a lower cooling space. The upper cooling space and the lower cooling space are connected to each other through openings or bores in the flow-influencing element.

Nachteilig bei dieser Anordnung sind sehr aufwendige geometrische Änderungsmaßnahmen an der Brennkraftmaschine, wenn die Kühlung der Zylinder verändert werden muss.A disadvantage of this arrangement are very complex geometric change measures to the internal combustion engine when the cooling of the cylinder must be changed.

Aufgabe der Erfindung ist es, eine einfachere Trennung des Kühlraumes in einen oberen Kühlraum und einen unteren Kühlraum aufzuzeigen, wobei spätere geometrische Änderungen einfach durchführbar sind.The object of the invention is to show a simpler separation of the cooling space in an upper cooling chamber and a lower cooling chamber, with later geometric changes are easy to carry out.

Diese Aufgabe wird von den Merkmalen im Kennzeichen des Patentanspruchs 1 gelöst.This object is solved by the features in the characterizing part of patent claim 1.

Die erfindungsgemäße Ausgestaltung erleichtert in vorteilhafter Weise Änderungen an der Zylinderkühlung. Zudem gestattet sie eine einfache Montage, beispielsweise als Einklemm- bzw. Stecklösung. Änderungen an der Kühlung sind somit schnell, einfach und kostengünstig möglich, ohne die Geometrie des Kurbelgehäuses zu verändern.The embodiment of the invention advantageously facilitates changes to the cylinder cooling. In addition, it allows easy installation, for example as a pinch or plug-in solution. Changes to the cooling are thus fast, easy and inexpensive, without changing the geometry of the crankcase.

Vorteilhaft nach Anspruch 2 ist die Strömungsbeeinflussung durch das strömungsbeeinflussende Element noch besser steuerbar und eine Klemmmontage wird durch diese Geometrie problemlos möglich.Advantageously, the flow influencing by the flow-influencing element is even better controllable and a clamp assembly is easily possible by this geometry.

Anspruch 3 unterstützt nochmals die Vorteile von Anspruch 2.Claim 3 again supports the advantages of claim 2.

Eine Ausführung gemäß Anspruch 4 gewährleistet Wartungsfreiheit im Betrieb. Darüberhinaus lassen sich mit den unterschiedlichen Werkstoffen unterschiedliche vorteilhafte Bauteileigenschaften erzeugen, wie z. B. die Realisierung von harten oder elastischen Teilbereichen.An embodiment according to claim 4 ensures maintenance-free operation. Moreover, can be produced with the different materials different advantageous component properties, such. B. the realization of hard or elastic parts.

Aufgrund der Bauteilausführung gemäß Anspruch 5 wird beispielsweise einer Zerstörung des Bauteils durch Bruch wirkungsvoll entgegengewirkt. Darüberhinaus sind Klemmmontagen einfach zu realisieren.Due to the component design according to claim 5, for example, a destruction of the component by breaking effectively counteracted. In addition, clamp assemblies are easy to implement.

Eine Vorrichtung nach Anspruch 6 hilft das strömungsbeeinflussende Element an durch Strömungswiderstände mechanisch hoch belasteten Stellen gegen Verrutschen zu sichern.An apparatus according to claim 6 helps to secure the flow-influencing element at positions mechanically highly loaded by flow resistances against slipping.

Eine Fertigung nach Anspruch 7 bietet einfache und kostengünstige Herstellung sowie eine kostengünstige und einfache Montage.A production according to claim 7 provides simple and inexpensive production and a cost-effective and easy installation.

Im Folgenden ist die Erfindung an Hand von zwei bevorzugten Ausführungsbeispielen in einer Zeichnung dargestellt.In the following the invention with reference to two preferred embodiments is shown in a drawing.

Figur 1 zeigt einen Schnitt durch ein open-deck Kurbelgehäuse 1, der zentrisch durch einen Zylinder 2 mit einer Zylinderachse 2a verläuft. Beidseitig vom Zylinder, äquidistant von der Zylinderachse 2a entfernt, sind zwei Kühlräume 3, 3' in das Kurbelgehäuse 1 angeordnet. Open deck Kurbelgehäuse bedeutet, dass die Kühlräume 3, 3' im Kurbelgehäuse 1 gegenüber einem nicht dargestellten Zylinderkopf nur durch eine Zylinderkopfdichtung 8 mit Kühlmitteldurchtrittsöffnungen 9, 9' verschlossen sind. Auf der, der Zylinderkopfdichtung gegenüberliegenden Seite mündet der Zylinder 2 in einen Kurbelraum 10 einer nicht weiter dargestellten Hubkolben-Brennkraftmaschine.Figure 1 shows a section through an open-deck crankcase 1, which extends centrally through a cylinder 2 with a cylinder axis 2a. On both sides of the cylinder, equidistant from the cylinder axis 2 a, two cooling chambers 3, 3 'are arranged in the crankcase 1. Open deck crankcase means that the cooling chambers 3, 3 'are sealed in the crankcase 1 with respect to a cylinder head, not shown, only by a cylinder head gasket 8 with coolant passage openings 9, 9'. On the, the cylinder head gasket opposite side of the cylinder 2 opens into a crank chamber 10 of a reciprocating internal combustion engine, not shown.

In den Kühlräumen 3, 3' befinden sich strömungsbeeinflussende Elemente 4, 4' mit Öffnungen 5, 5'. An das strömungsbeeinflussende Element 4 sind drei Rippen 6, 6' angeformt. Ferner weisen die strömungsbeeinflussenden Elemente 4, 4' in Teilbereichen eine Oberflächenkrümmung 7, 7' auf. Die Kühlmitteldurchtrittsöffnungen 9, 9' in der Zylinderkopfdichtung 8 sind im Bereich der Kühlräume 3, 3' angeordnet. Die strömungsbeeinflussenden Elemente 4, 4' teilen die Kühlräume 3, 3' in obere Kühlräume 3a, 3'a und in untere Kühlräume 3b, 3'b auf.In the cooling chambers 3, 3 'are flow-influencing elements 4, 4' with openings 5, 5 '. On the flow-influencing element 4 three ribs 6, 6 'are integrally formed. Furthermore, the flow-influencing elements 4, 4 'have a surface curvature 7, 7' in partial regions. The coolant passage openings 9, 9 'in the cylinder head gasket 8 are arranged in the region of the cooling chambers 3, 3'. The flow-influencing elements 4, 4 'divide the cooling chambers 3, 3' into upper cooling chambers 3a, 3'a and lower cooling chambers 3b, 3'b.

Die Rippe 6 sowie das strömungsbeeinflussende Element 4' sitzen in der Ebene der oberen Kolbenumkehr des hier nicht dargestellten Kolbens, der im Zylinder 2 in Richtung der Zylinderachse 2a auf und ab bewegt wird.The rib 6 and the flow-influencing element 4 'are located in the plane of the upper piston reversal of the piston, not shown here, which is moved in the cylinder 2 in the direction of the cylinder axis 2a up and down.

Bei Betrieb der Hubkolben-Brennkraftmaschine fördert eine hier nicht dargestellte Kühlmittelpumpe das Kühlmittel durch eine nicht dargestellte Öffnung in die oberen Kühlmittelräume 3a, 3'a. Entsprechend den aktuellen Betriebsbedingungen, wie z.B. der Lastverhältnisse der Hubkolben-Brennkraftmaschine, wird aufgrund der vorherrschenden Temperatur- und Druckverhältnisse in den Kühlräumen 3, 3' das Kühlmittel durch die Öffnungen 5, 5' und den Kühlmitteldurchtrittsöffnungen 9, 9' von den oberen Kühlmittelräumen 3a, 3'a in die unteren Kühlmittelräume 3b, 3'b und in den nicht dargestellten Zylinderkopf verteilt. Abhängig von der Lage der nicht dargestellten Öffnung für die Kühlmittelzufuhr, kann das Kühlmittel zumindest in Teilbereichen auch vom Zylinderkopf durch die Kühlmitteldurchtrittsöffnungen 9, 9' in die oberen Kühlräume 3a, 3'a und von dort weiter in die unteren Kühlräume 3b, 3'b gedrückt werden.During operation of the reciprocating internal combustion engine, a coolant pump (not illustrated here) conveys the coolant through an opening (not shown) into the upper coolant chambers 3a, 3'a. According to the current operating conditions, e.g. the load conditions of the reciprocating internal combustion engine, due to the prevailing temperature and pressure conditions in the cooling chambers 3, 3 ', the coolant through the openings 5, 5' and the coolant passage openings 9, 9 'from the upper coolant chambers 3a, 3'a in the lower Coolant chambers 3b, 3'b and distributed in the cylinder head, not shown. Depending on the position of the opening, not shown, for the coolant supply, the coolant can also at least in some areas from the cylinder head through the coolant passage openings 9, 9 'in the upper cooling chambers 3a, 3'a and from there into the lower cooling chambers 3b, 3'b be pressed.

Im Bereich zwischen Zylinderkopfdichtung 8 und Rippe 6 bzw. dem strömungsbeeinflussenden Element 4' wird ca. 80 % der an das Kurbelgehäuse vom Brennraum abgegebenen Wärmemenge eingetragen. Die Öffnungen 5, 5' und die Kühlmitteldurchtrittsöffnungen 9, 9' sind derart dimensioniert, dass sich in den unteren Kühlräumen 3b, 3'b nur eine sehr schwache Strömung und in den oberen Kühlräumen 3a, 3'a eine große Strömungsgeschwindigkeit in Richtung des nicht dargestellten Zylinderkopfes einstellt. Durch die korrekte Dimensionierung ist in Bereichen mit geringem Wärmemengeneintrag und in Bereichen mit großem Wärmemengeneintrag gleichermaßen eine homogene Temperaturverteilung in der Zylinderwandung in Richtung der Zylinderachse 2a gewährleistet.In the area between the cylinder head gasket 8 and the rib 6 or the flow-influencing element 4 ', approximately 80% of the heat released to the crankcase from the combustion chamber is introduced. The openings 5, 5 'and the coolant passage openings 9, 9' are dimensioned such that in the lower cooling chambers 3b, 3'b only a very weak flow and in the upper cooling chambers 3a, 3'a a large flow velocity in the direction of not adjusted cylinder head. Due to the correct dimensioning a homogeneous temperature distribution in the cylinder wall in the direction of the cylinder axis 2a is ensured in areas with low heat input and in areas with large heat input.

Durch diese Art der Kühlung werden thermische Verzüge der Zylinderwandung weitestgehend vermieden. Weiter wird die Hubkolben-Brennkraftmaschine schnell aufgeheizt, wodurch Kraftstoffeinsparungen möglich sind und die Schadstoff-Rohemissionen, speziell von Kohlenwasserstoffen, in der Warmlaufphase minimiert sind.By this type of cooling thermal distortion of the cylinder wall are largely avoided. Further, the reciprocating internal combustion engine is heated rapidly, whereby fuel savings are possible and the pollutant raw emissions, especially of hydrocarbons, are minimized in the warm-up phase.

Das strömungsbeeinflussende Element 4 ist derart ausgeformt, dass die Rippen 6, 6' bei der Montage zusätzlich als Halteelemente fungieren. Ferner übernehmen sie auch die Aufgabe, das Kühlmittel gezielt um den Zylinder 2 zu leiten. Zur zusätzlichen Klemmung des strömungsbeeinflussenden Elements 4 sind Oberflächenkrümmungen 7, 7' vorhanden. Die Bereiche der Oberflächenkrümmung sind elastisch, können jedoch auch steif ausgelegt sein. Die strömungsbeeinflussenden Elemente 4, 4' sind aus einer korrosionsfesten Aluminiumlegierung hergestellt, können jedoch in weiteren Ausführungsvarianten auch aus Kunststoff bzw. Metallkunststoffverbänden hergestellt werden.The flow-influencing element 4 is shaped such that the ribs 6, 6 'additionally act as holding elements during assembly. Furthermore, they also take on the task to direct the coolant targeted to the cylinder 2. For additional clamping of the flow-influencing element 4 surface curvatures 7, 7 'are present. The areas of surface curvature are elastic but may be stiff. The flow-influencing elements 4, 4 'are made of a corrosion-resistant aluminum alloy, but can also be made of plastic or metal plastic composites in other embodiments.

Teilbereiche des strömungsbeeinflussenden Elements 4' sind zylinderseitig und kurbelgehäuseseitig gegeneinander verschränkt, wodurch ebenfalls Oberflächenkrümmungen 7' erzielt werden. Auch hier dienen diese als Montagehilfe beim Einbau in den Kühlraum 3', wobei die federnde Wirkung der Oberflächenkrümmung 7' ausgenutzt wird, um das strömungsbeeinflussende Element 4' zwischen Kurbelgehäusewandung und Zylinderwandung zu verkeilen.Portions of the flow-influencing element 4 'are on the cylinder side and the crankcase side interlocked with each other, which also surface curvatures 7' are achieved. Again, these serve as mounting aid when installed in the cooling chamber 3 ', wherein the resilient action of the surface curvature 7' is utilized to key the flow-influencing element 4 'between the crankcase wall and the cylinder wall.

Durch den Einsatz eines strömungsbeeinflussenden Elements 4, 4' kann das Kühlsystem sowohl als Kühlsystem mit einem Kühlmittelkreislauf, als auch als Split-Cooling-System ausgeführt werden. Split-Cooling-System bedeutet den Einsatz von zwei getrennten Kühlmittelkreisläufen für eine Hubkolben-Brennkraftmaschine. Ein Kühlkreislauf kühlt das Kurbelgehäuse 1, wobei der Kühlmittelstrom wiederum auf die oberen Kühlräume 3a, 3'a und die unteren Kühlräume 3b, 3'b aufgeteilt wird und das Kühlmittel ebenfalls aus den oberen Kühlräumen 3a, 3'a wieder abgeführt wird. Ein weiterer Kühlkreislauf kühlt den nicht dargestellten Zylinderkopf. Bei einem Split-Cooling-System erfolgt die Regelung der Kühlmitteltemperatur in jedem Durchströmungsbereich durch zwei getrennte Regler.By using a flow-influencing element 4, 4 ', the cooling system can be designed both as a cooling system with a coolant circuit and as a split-cooling system. Split-cooling system means the use of two separate coolant circuits for a reciprocating internal combustion engine. A cooling circuit cools the crankcase 1, wherein the coolant flow is in turn divided among the upper cooling chambers 3a, 3'a and the lower cooling chambers 3b, 3'b and the coolant is also discharged from the upper cooling chambers 3a, 3'a again. Another cooling circuit cools the cylinder head, not shown. In a split-cooling system, the coolant temperature in each flow area is controlled by two separate controllers.

Claims (7)

  1. A crankcase for a liquid-cooled internal combustion engine, a common cooling chamber being provided for all cylinders and containing at least one flow-influencing element, wherein the flow-influencing element (4, 4') extends over at least half the length of the cooling chamber (3, 3') and divides the cooling chamber (3, 3'), at least in a part region, into a top cooling chamber (3'a) and a bottom cooling chamber (3'b), wherein the top cooling chamber (3'a) and the bottom cooling chamber (3'b) are connected to one another by openings in the flow-influencing element (4, 4'),
    characterised in that the coolant is introduced into the cooling chamber (3, 3') through the top cooling chamber (3'a) and the flow-influencing element (4, 4') is adapted to be nipped or pinched in the cooling chamber (3, 3').
  2. A crankcase according to claim 1,
    characterised in that at least one rib (6, 6') is disposable on the flow-influencing element.
  3. A crankcase according to claim 1,
    characterised in that the flow-influencing element (4, 4') has a surface curvature (7, 7'), at least in part regions.
  4. A crankcase according to claim 1, characterised in that the flow-influencing element (4, 4') is made of a corrosion-resistant plastics material and/or metal and/or plastics-metal composite material.
  5. A crankcase according to at least one of the previous claims,
    characterised in that the flow-influencing element (4, 4') is elastically deformable, at least in part-regions.
  6. A crankcase according to at least one of the preceding claims,
    characterised in that the flow-influencing element (4, 4') is additionally fastenable in the cooling chamber (3, 3').
  7. A crankcase according to at least one of the previously-mentioned claims,
    characterised in that the flow-influencing element (4, 4') is in one piece.
EP01130052A 2001-01-20 2001-12-18 Crankcase for a liquid cooled piston combustion engine Expired - Lifetime EP1227236B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10102644 2001-01-20
DE2001102644 DE10102644C1 (en) 2001-01-20 2001-01-20 Crank housing for liquid-cooled reciprocating piston engine has common cooling space for all engine cylinders divided by flow control element into upper and lower cooling spaces

Publications (3)

Publication Number Publication Date
EP1227236A2 EP1227236A2 (en) 2002-07-31
EP1227236A3 EP1227236A3 (en) 2003-01-22
EP1227236B1 true EP1227236B1 (en) 2006-07-19

Family

ID=7671287

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01130052A Expired - Lifetime EP1227236B1 (en) 2001-01-20 2001-12-18 Crankcase for a liquid cooled piston combustion engine

Country Status (2)

Country Link
EP (1) EP1227236B1 (en)
DE (2) DE10102644C1 (en)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3936247B2 (en) 2002-06-12 2007-06-27 トヨタ自動車株式会社 Engine cooling system
JP3967636B2 (en) 2002-06-12 2007-08-29 トヨタ自動車株式会社 Engine cooling system
DE10342935B4 (en) 2003-09-17 2015-04-30 Robert Bosch Gmbh Internal combustion engine with a cooling circuit
CN1309949C (en) * 2004-03-10 2007-04-11 财团法人工业技术研究院 Engine cylinder block cooling water jacket diversion structure
JP4227914B2 (en) * 2004-03-10 2009-02-18 トヨタ自動車株式会社 Cylinder block cooling structure
JP4227923B2 (en) * 2004-03-26 2009-02-18 トヨタ自動車株式会社 Cylinder block cooling structure
JP4845620B2 (en) 2006-07-21 2011-12-28 トヨタ自動車株式会社 Heat medium passage partition member for cooling internal combustion engine, internal combustion engine cooling structure, and internal combustion engine cooling structure forming method
JP4851258B2 (en) * 2006-07-31 2012-01-11 トヨタ自動車株式会社 Heat medium passage partition member for cooling internal combustion engine, internal combustion engine cooling mechanism, and internal combustion engine cooling mechanism forming method
US8312848B2 (en) * 2010-03-04 2012-11-20 GM Global Technology Operations LLC Engine block assembly for internal combustion engine
DE102010027104A1 (en) 2010-07-12 2012-01-12 Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr Liquid-cooled internal combustion engine has turbulence generating element which is arranged in region of coolant passage of cylinder head
DE102012204805A1 (en) * 2012-03-26 2013-09-26 Bayerische Motoren Werke Aktiengesellschaft Crankcase for internal combustion engine, has rib that is disposed in coolant jacket, and is supported at cylinder sleeve section against crankcase
DE102012015784A1 (en) 2012-08-08 2014-02-13 Daimler Ag Cylinder head for internal combustion engine of motor vehicle, comprises two receiving areas arranged on sides of two sealing flange surfaces for two camshafts, where receiving areas are fluidically connected to each other area by area
DE102012019091A1 (en) 2012-09-27 2014-03-27 Daimler Ag Crankcase for combustion engine of motor vehicle, has coolant chambers, which are separated in fluidic manner from each other by partition wall that is designed one piece with crankcase
DE102012019057A1 (en) 2012-09-27 2014-03-27 Daimler Ag Crankcase for internal combustion engine of motor vehicle e.g. passenger car, has lower and middle coolant chambers that are fluidically separated from each other by intermediate element provided on housing
DE102013003601A1 (en) 2013-03-01 2014-09-04 Daimler Ag Internal combustion engine for motor vehicle, has crankcase, which flowed through one of coolant, where first coolant chamber and second cooling chamber are arranged in vertical direction of crankcase
DE102013003607A1 (en) 2013-03-01 2014-09-04 Daimler Ag Internal combustion engine for motor vehicle, has primary vent channels which are arranged in longitudinal direction of crankcase, and secondary vent channels for venting second coolant chamber is fluidly connected at cylinder
JP6268010B2 (en) 2014-03-19 2018-01-24 株式会社クボタ Engine cooling system
JP2016014338A (en) * 2014-07-01 2016-01-28 アイシン精機株式会社 Internal combustion engine
WO2016104444A1 (en) 2014-12-22 2016-06-30 ニチアス株式会社 Dividing component of cooling water channel of water jacket, internal combustion engine, and automobile
DE102016102159A1 (en) * 2016-02-08 2017-08-10 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Throttling element for an engine block of an internal combustion engine, engine block for an internal combustion engine, method for producing an engine block for an internal combustion engine and internal combustion engine
KR101809020B1 (en) * 2017-06-22 2017-12-15 (주)진양오일씰 Water jacket seal and water jacket module use that seal

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4461247A (en) * 1981-09-21 1984-07-24 Nissan Motor Company, Ltd. Cylinder block
EP0206184A2 (en) * 1985-06-19 1986-12-30 Klöckner-Humboldt-Deutz Aktiengesellschaft Water-cooled cylinder liner

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE309046C (en) *
GB146196A (en) * 1917-08-13 1920-09-16 Franz Ludwig Maedler Improvements in the distribution of the cooling water in water-cooled explosion engines
DE3632160A1 (en) * 1986-09-22 1988-03-31 Kloeckner Humboldt Deutz Ag INTERNAL COMBUSTION ENGINE

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4461247A (en) * 1981-09-21 1984-07-24 Nissan Motor Company, Ltd. Cylinder block
EP0206184A2 (en) * 1985-06-19 1986-12-30 Klöckner-Humboldt-Deutz Aktiengesellschaft Water-cooled cylinder liner

Also Published As

Publication number Publication date
EP1227236A3 (en) 2003-01-22
DE10102644C1 (en) 2002-02-21
DE50110492D1 (en) 2006-08-31
EP1227236A2 (en) 2002-07-31

Similar Documents

Publication Publication Date Title
EP1227236B1 (en) Crankcase for a liquid cooled piston combustion engine
DE69826381T2 (en) Gas compressor with water-cooled cylinder head
DE10256178B4 (en) Water jacket for a cylinder head
DE102004052788A1 (en) Cylinder head gasket for use in an internal combustion engine and thus equipped internal combustion engine
WO2008122544A1 (en) Liquid-cooled internal combustion engine
WO2005093242A1 (en) Water-cooled cylinder head for a multi-cylinder internal combustion engine
DE3226509A1 (en) COOLING CIRCUIT FOR INTERNAL COMBUSTION ENGINES
EP1532359B1 (en) Cylinder head for a water-cooled multi-cylinder internal combustion engine
DE19720380C1 (en) Liquid-cooled crank housing for engine
DE10251360B4 (en) Liquid cooled cylinder head
DE69102656T2 (en) CYLINDER RIFLE FOR A WATER-COOLED INTERNAL COMBUSTION ENGINE.
EP1066459B1 (en) Internal combustion engine with a fluid cooling system
AT5142U1 (en) Internal combustion engine
DE202021101256U1 (en) Valve stem seal and arrangement
DE102016216360B4 (en) Cylinder head for an internal combustion engine
DE102019116894A1 (en) Cylinder head with temperature-controlled exhaust duct
DE102020111055B3 (en) Cylinder head with a cooling channel structure
DE102014222368A1 (en) thermostatic valve
DE10113639A1 (en) Coolant channel for liquid-cooled piston for IC engines has corrugated cooling channel with relative distance between channel and piston wall between min. and max. values
DE102019212200A1 (en) CYLINDER HEAD WITH IMPROVED VALVE BRIDGE COOLING
EP1519028A1 (en) Cylinder head of an internal combustion engine
DE68902043T2 (en) COOLING CIRCUIT OF AN INTERNAL COMBUSTION ENGINE OF A VEHICLE.
DE202016104442U1 (en) Cylinder block for a multi-cylinder internal combustion engine
EP1439927A1 (en) Cylinder crankcase having a cylinder sleeve, and casting tool
DE102013004797A1 (en) Piston for internal combustion engine

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

17P Request for examination filed

Effective date: 20030206

AKX Designation fees paid

Designated state(s): DE FR GB IT

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20060802

REF Corresponds to:

Ref document number: 50110492

Country of ref document: DE

Date of ref document: 20060831

Kind code of ref document: P

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20070420

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20141223

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20141219

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20141216

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20141230

Year of fee payment: 14

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 50110492

Country of ref document: DE

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20151218

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20160831

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20151218

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160701

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20151231

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20151218