EP0668440A1 - Internal combustion engine - Google Patents

Internal combustion engine Download PDF

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Publication number
EP0668440A1
EP0668440A1 EP95100638A EP95100638A EP0668440A1 EP 0668440 A1 EP0668440 A1 EP 0668440A1 EP 95100638 A EP95100638 A EP 95100638A EP 95100638 A EP95100638 A EP 95100638A EP 0668440 A1 EP0668440 A1 EP 0668440A1
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EP
European Patent Office
Prior art keywords
oil
housing
internal combustion
channels
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.)
Granted
Application number
EP95100638A
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German (de)
French (fr)
Other versions
EP0668440B1 (en
Inventor
Winfried Distelrath
Manfred Batzill
Hans-Joachim Dr. Esch
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
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Dr Ing HCF Porsche AG
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Publication of EP0668440A1 publication Critical patent/EP0668440A1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N15/00—Other power-operated starting apparatus; Component parts, details, or accessories, not provided for in, or of interest apart from groups F02N5/00 - F02N13/00
    • F02N15/006—Assembling or mounting of starting devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
    • F01M11/02—Arrangements of lubricant conduits
    • 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
    • F02B75/24—Multi-cylinder engines with cylinders arranged oppositely relative to main shaft and of "flat" type
    • F02B75/243—Multi-cylinder engines with cylinders arranged oppositely relative to main shaft and of "flat" type with only one crankshaft of the "boxer" type, e.g. all connecting rods attached to separate crankshaft bearings
    • 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
    • F02F7/00—Casings, e.g. crankcases or frames
    • F02F7/0043—Arrangements of mechanical drive elements
    • F02F7/0053—Crankshaft bearings fitted in the crankcase
    • 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
    • F02B75/02—Engines characterised by their cycles, e.g. six-stroke
    • F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
    • F02B2075/027—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle four
    • 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
    • F05C2201/00—Metals
    • F05C2201/02—Light metals
    • F05C2201/021—Aluminium
    • 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
    • F05C2201/00—Metals
    • F05C2201/04—Heavy metals
    • F05C2201/0433—Iron group; Ferrous alloys, e.g. steel
    • F05C2201/0436—Iron
    • 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
    • F05C2201/00—Metals
    • F05C2201/04—Heavy metals
    • F05C2201/0433—Iron group; Ferrous alloys, e.g. steel
    • F05C2201/0436—Iron
    • F05C2201/0439—Cast iron

Definitions

  • the invention relates to an internal combustion engine, in particular a boxer engine, according to the preamble of claim 1.
  • crankcase for an internal combustion engine is known in which one half of the bearing bracket is part of the housing and the other half of the bearing bracket is fixed by means of fastening screws.
  • the housing halves are connected to one another via continuous cylinder head screws.
  • a crankcase is known from US-PS 29 69 781, which is connected to the bearing bracket via common screws.
  • the object of the invention is to provide an internal combustion engine, in particular a boxer engine, which has a simple assembly structure, enables construction to be carried out with different materials and ensures optimum oil supply to both crankshaft bearings.
  • the bearing bridge can consist of a different material than the cylinder crankcase and an assembly takes place detached from the crankcase. This is made possible by fixing the bearing bracket in the crankcase using cylinder head screws arranged separately from the bearing bracket screws.
  • Cooling channels are also integrated in the housing. Furthermore, the two housing halves have walls to form an oil space, in which an oil trap device with through openings to the oil pan are arranged on the housing halves.
  • Oil channels are embedded in the connecting surfaces of the cylinder crankcase facing the bearing bridge, which are covered by the flat connecting surface of the bearing bridge.
  • the oil circuit runs through the oil channels in the cylinder crankcase, through transverse bores and oblique bores in the bearing bridge to the bearing points of the crankshaft.
  • a few holes in the cylinder head screws supply oil to the cylinder head, which has corresponding inclined channels.
  • the parting plane of the cylinder crankcase is in the same parting plane as the bearing bridge and runs through the center of the crankshaft bearing. This results in a symmetrical crankcase with the respective cylinder heads.
  • An internal combustion engine in particular a boxer engine, essentially comprises a crankcase 1 in which a bearing bracket 2 is held.
  • the respective cylinder heads 3 and 4 are connected to the crankcase 1.
  • the crankcase is made, for example, of an aluminum material and the bearing bridge is made of cast iron, for example.
  • the cylinder crankcase 1 consists of housing halves 5 and 6, which have a parting plane a-a, which corresponds to the parting plane b-b of the bearing bracket 2.
  • the two halves 2a, 2b of the bearing bracket 2 are connected to one another via bearing chair screws 7, 8 arranged in the same direction.
  • Each housing half 5, 6 of the crankcase 1 is over cylinder head screws 9, 10; 9a, 10a braced with the bearing bracket 2, the screws 9, 10 and 9a, 10a each also fixing the cylinder head 3, 4 to the housing 1.
  • the cylinder head screws 9, 10 are arranged in the opposite direction to the further cylinder head screws 9a, 10a and each end is based in a receiving bore of the bearing bracket 2.
  • Oil channels 15, 16 and 17 are embedded in the contact surface 11 and 12 of each crankcase half 6 and 5, which face the flat surfaces 13 and 14 of the bearing bridge halves 2a and 2b. These are covered by the opposite flat contact surfaces 13 and 14, so that each result in closed oil channels.
  • the oil channels 15 and 16 are mutually connected via a first housing-side channel 18 and the oil channel 15 of the one housing half 6 is connected to the oil channel 17 of the further housing half 5 at least two transverse channels 19 and 20 connected in the bearing bridge 2. From these channels 19, 20 and from channel 17, inclined channels 21 branch off in the bearing bridge 2, which lead to the bearing locations 22 of the crankshaft.
  • the inlet opening 22 of the oblique channels 21 are shown in more detail in FIG. 5.
  • the inclined channels 21 can preferably have the same oil inlet opening 19a with the two transverse channels 14, 20.
  • the inlet openings of the channels 19 and 21 or 20 and 21 are advantageously separated.
  • the oil channel 16 has an inflow at 23, which is connected to an oil pump 24.
  • the oil flows through the housing-side channel 18 to the oil channel 15 via an interposed oil filter 25 in the channel 16. Before entering this channel 15, the oil flows through an oil / water heat exchanger 26.
  • the cylinder head screws 9, 10 and 9a, 10a are arranged in bores 30 of the housing 1 and the heads 4 and 5, which simultaneously form oil passages. For this purpose, they have a larger diameter than the screws. Connection channels 31 branch off from these bores into the oil channel 15. Also in the second housing half 6 connecting channels 32 are provided from the bores of the bolts 9, 10 in the oil channel 17. As a result, the oil can flow from the oil channels 15 and 17 to each head side 4, 5 through the bores of the cylinder head screws 9, 9a and 10, 10a, for which purpose an inclined channel 33 branches off from the bores.
  • the oil channels 15, 16 and 17 extend almost over the entire length of the crankcase 1, with the oil channels 15, 16 and on the housing half 6 in the housing halves 5 on both long sides
  • the oil channel 17 is arranged only on one long side.
  • Each half 5, 6 of the cylinder crankcase 1 has at least opposite, cast-on cooling channels 35, 36.
  • a starter receptacle 37 is provided between the cooling channels 35 on one side of the housing and is assigned to the housing half 6 and ends with the parting plane a-a.
  • two funnel-shaped walls 38, 39 of an oil trap are integrally cast into the housing halves 5, 6 symmetrically to the parting plane a-a.
  • An intermediate shaft 40 is mounted within this device.
  • This device is arranged between walls 41, 42, which branch off from cooling channels 36.
  • the space formed by the walls 41, 42 is closed off by a cover 43 and forms an oil pan.
  • Oil passage openings 44 are provided in the walls 41, 42.

Landscapes

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

Abstract

The engine comprises a cylinder crankcase (1) which has a common vertical joint plane (a-a) with the end bracket. The bracket sections are connected via thrust bearing screws. The end bracket is held via cylinder head screws (9,10) between the crankcase sections (5,6), to form oil channels (15-17). Cylinder heads (3,4) may be fastened to the crankcase via the same screws. The cylinder head screws are partially located in bores (30) in housing and head, which form oil passages. These have a connection channel to the oil channels in the cylinder crankcase.

Description

Die Erfindung bezieht sich auf eine Brennkraftmaschine, insbesondere einen Boxermotor, nach dem Oberbegriff des Anspruchs 1.The invention relates to an internal combustion engine, in particular a boxer engine, according to the preamble of claim 1.

Aus der DE-AS 11 49 198 ist ein Kurbelgehäuse für eine Brennkraftmaschine bekannt, bei der eine Lagerbrückenhälfte Teil des Gehäuses ist und die weitere Lagerbrückenhälfte über Befestigungsschrauben festgesetzt wird. Die Gehäusehälften sind über durchgehende Zylinderkopfschrauben miteinander verbunden. Desweiteren ist aus der US-PS 29 69 781 ein Kurbelgehäuse bekannt, das mit der Lagerbrücke über gemeinsame Schrauben verbunden wird.From DE-AS 11 49 198 a crankcase for an internal combustion engine is known in which one half of the bearing bracket is part of the housing and the other half of the bearing bracket is fixed by means of fastening screws. The housing halves are connected to one another via continuous cylinder head screws. Furthermore, a crankcase is known from US-PS 29 69 781, which is connected to the bearing bracket via common screws.

Aufgabe der Erfindung ist es, eine Brennkraftmaschine, insbesondere einen Boxermotor zu schaffen, die einen einfachen Montageaufbau besitzt, eine Bauausführung mit verschiedenen Werkstoff ermöglicht und eine optimale Ölzuführung zu beiden Lagerstellen der Kurbelwelle gewährleistet.The object of the invention is to provide an internal combustion engine, in particular a boxer engine, which has a simple assembly structure, enables construction to be carried out with different materials and ensures optimum oil supply to both crankshaft bearings.

Diese Aufgabe wird erfindungsgemäß durch die kennzeichnenden Merkmale des Anspruchs 1 gelöst. Weitere vorteilhatte Merkmale beinhalten die Unteransprüche.This object is achieved according to the invention by the characterizing features of claim 1. Further advantageous features include the subclaims.

Mit der Erfindung wird erreicht, daß die Lagerbrücke aus einem anderen Material als das Zylinderkurbelgehäuse bestehen kann und eine Montage losgelöst vom Kurbelgehäuse erfolgt. Dies wird möglich durch eine Festlegung der Lagerbrücke im Kurbelgehäuse über getrennt von den Lagerstuhlschrauben angeordnete Zylinderkopfschrauben.With the invention it is achieved that the bearing bridge can consist of a different material than the cylinder crankcase and an assembly takes place detached from the crankcase. This is made possible by fixing the bearing bracket in the crankcase using cylinder head screws arranged separately from the bearing bracket screws.

An das Kurbelgehäuse sind Aufnahmen für Aggregate wie für einen Anlasser usw. mit angegossen. Ebenso sind Kühlkanäle in das Gehäuse integriert. Desweiteren weisen die beden Gehäusehälften Wandungen zur Bildung eines Ölraumes auf, in der eine Ölfangeinrichtung mit Durchtrittsöffnungen zur Ölwanne an den Gehäusehälften angeordnet sind.Mountings for units such as for a starter etc. are cast onto the crankcase. Cooling channels are also integrated in the housing. Furthermore, the two housing halves have walls to form an oil space, in which an oil trap device with through openings to the oil pan are arranged on the housing halves.

In den der Lagerbrücke zugerichteten Verbindungsflächen des Zylinderkurbelgehäuses sind ÖIkanäle eingelassen, die von der ebenen Verbindungsfläche der Lagerbrücke abgedeckt werden. Der Ölkreislauf verläuft über die Ölkanäle im Zylinderkurbelgehäuse, durch Querbohrungen und Schrägbohrungen in der Lagerbrücke zu den Lagerstellen der Kurbelwelle. Über einige Bohrungen der Zylinderkopfschrauben erfolgt eine Zuführung von Öl in den Zylinderkopf, der hierzu entsprechende Schrägkanäle aufweist.Oil channels are embedded in the connecting surfaces of the cylinder crankcase facing the bearing bridge, which are covered by the flat connecting surface of the bearing bridge. The oil circuit runs through the oil channels in the cylinder crankcase, through transverse bores and oblique bores in the bearing bridge to the bearing points of the crankshaft. A few holes in the cylinder head screws supply oil to the cylinder head, which has corresponding inclined channels.

Die Trennebene des Zylinderkurbelgehäuses ist in der gleichen Trennebene wie die Lagerbrücke gelegen und verläuft durch die Kurbelwellenlagermitte. Hierdurch ergibt sich ein symmetrisches Kurbelgehäuse mit den jeweiligen Zylinderköpfen.The parting plane of the cylinder crankcase is in the same parting plane as the bearing bridge and runs through the center of the crankshaft bearing. This results in a symmetrical crankcase with the respective cylinder heads.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird im folgenden näher beschrieben.An embodiment of the invention is shown in the drawing and will be described in more detail below.

Es zeigen

  • Fig. 1 einen Querschnitt durch ein Zylinderkurbelgehäuse mit Lagerbrücke und Zylinderköpfen im Bereich der Zylinderkopfschrauben,
  • Fig. 2 einen Querschnitt gemäß Fig. 1 im Bereich der Zylinderbohrungen,
  • Fig. 3 einen Schnitt durch die Lagerbrücke nach Linie 111-111 der Fig. 7,
  • Fig. 4 eine Ansicht in Pfeilrichtung Z auf einer Anlagefläche der Lagerbrücke gemäß Fig. 3 gesehen,
  • Fig. 5 eine Ansicht in Pfeilrichtung X auf die weitere Anlagefläche der Lagerbrücke gemäß Fig. 3 gesehen,
  • Fig. 6 eine Ansicht auf die Ölkanäle im Kurbelgehäuse in Pfeilrichtung X in der Schnittebene VI-VI gemäß Fig. 2 gesehen, und
  • Fig. 7 eine Ansicht auf die Ölkanäle im Kurbelgehäuses in Pfeilrichtung Z in der Schnittebene VII-VII der Fig. 2 gesehen.
Show it
  • 1 shows a cross section through a cylinder crankcase with a bearing bridge and cylinder heads in the area of the cylinder head bolts,
  • 2 shows a cross section according to FIG. 1 in the region of the cylinder bores,
  • 3 shows a section through the bearing bridge according to line 111-111 of FIG. 7,
  • 4 is a view seen in the direction of arrow Z on a contact surface of the bearing bridge according to FIG. 3,
  • 5 is a view seen in the direction of arrow X on the further contact surface of the bearing bridge according to FIG. 3,
  • 6 is a view of the oil passages in the crankcase in the direction of arrow X in the section plane VI-VI according to FIG. 2, and
  • Fig. 7 is a view of the oil channels in the crankcase in the direction of arrow Z in the section plane VII-VII of FIG. 2 seen.

Eine Brennkraftmaschine, insbesondere ein Boxermotor, umfaßt im wesentlichen ein Kurbelgehäuse 1, in dem eine Lagerbrücke 2 gehalten ist. Mit dem Kurbelgehäuse 1 sind die jeweiligen Zylinderköpfe 3 und 4 verbunden. Das Kurbelgehäuse besteht beispielsweise aus einem Aluminium-Werkstoff und die Lagerbrücke besteht beispielsweise aus einem Grauguß.An internal combustion engine, in particular a boxer engine, essentially comprises a crankcase 1 in which a bearing bracket 2 is held. The respective cylinder heads 3 and 4 are connected to the crankcase 1. The crankcase is made, for example, of an aluminum material and the bearing bridge is made of cast iron, for example.

Das Zylinderkurbelgehäuse 1 besteht aus Gehäusehälften 5 und 6, die eine Trennebene a-a besitzen, welche mit der Trennebene b-b der Lagerbrücke 2 übereinstimmt.The cylinder crankcase 1 consists of housing halves 5 and 6, which have a parting plane a-a, which corresponds to the parting plane b-b of the bearing bracket 2.

Die beiden Hälften 2a, 2b der Lagerbrücke 2 sind über gleichgerichtet angeordnete Lagerstuhlschrauben 7, 8 miteinander verbunden.The two halves 2a, 2b of the bearing bracket 2 are connected to one another via bearing chair screws 7, 8 arranged in the same direction.

Jede Gehäusehälfte 5, 6 des Kurbelgehäuses 1 ist über Zylinderkopfschrauben 9, 10; 9a, 10a mit der Lagerbrücke 2 verspannt, wobei die Schrauben 9, 10 und 9a, 10a jeweils auch den Zylinderkopf 3, 4 am Gehäuse 1 festsetzen. Die Zylinderkopfschrauben 9, 10 sind entgegengerichtet zu den weiteren Zylinderkopfschrauben 9a, 10a angeordnet und gründen endseitig jeweils in einer Aufnahmebohrung der Lagerbrücke 2.Each housing half 5, 6 of the crankcase 1 is over cylinder head screws 9, 10; 9a, 10a braced with the bearing bracket 2, the screws 9, 10 and 9a, 10a each also fixing the cylinder head 3, 4 to the housing 1. The cylinder head screws 9, 10 are arranged in the opposite direction to the further cylinder head screws 9a, 10a and each end is based in a receiving bore of the bearing bracket 2.

In der Anlagefläche 11 und 12 jeder Kurbelgehäusehälfte 6 und 5, die den ebenen Flächen 13 und 14 der Lagerbrückenhälften 2a und 2b gegenüberstehen, sind Ölkanäle 15, 16 und 17 eingelassen. Diese werden von den gegenüberstehenden ebenen Anlageflächen 13 und 14 abgedeckt, so daß sich jeweils geschlossene Ölkanäle ergeben.Oil channels 15, 16 and 17 are embedded in the contact surface 11 and 12 of each crankcase half 6 and 5, which face the flat surfaces 13 and 14 of the bearing bridge halves 2a and 2b. These are covered by the opposite flat contact surfaces 13 and 14, so that each result in closed oil channels.

Die Ölkanäle 15 und 16 sind untereinander über einen ersten gehäuseseitigen Kanal 18 und der Ölkanal 15 der einen Gehäusehälfte 6 ist mit dem Ölkanal 17 der weiteren Gehäusehälfte 5 über mindestens zwei Querkanäle 19 und 20 in der Lagerbrücke 2 verbunden. Von diesen Kanälen 19, 20 sowie vom Kanal 17 zweigen Schrägkanäle 21 in der Lagerbrücke 2 ab, die zu den Lagerorten 22 der Kurbelwelle führen. Die Eintrittsöffnung 22 der Schrägkanäle 21 sind in Fig. 5 näher dargestellt. Die Schrägkanäle 21 können mit den beiden Querkanälen 14, 20 vorzugsweise eine gleiche Öleintrittsöffnung 19a aufweisen. In vorteilhafter Weise sind die Eintrittsöffnungen der Kanäle 19 und 21 bzw. 20 und 21 getrennt.The oil channels 15 and 16 are mutually connected via a first housing-side channel 18 and the oil channel 15 of the one housing half 6 is connected to the oil channel 17 of the further housing half 5 at least two transverse channels 19 and 20 connected in the bearing bridge 2. From these channels 19, 20 and from channel 17, inclined channels 21 branch off in the bearing bridge 2, which lead to the bearing locations 22 of the crankshaft. The inlet opening 22 of the oblique channels 21 are shown in more detail in FIG. 5. The inclined channels 21 can preferably have the same oil inlet opening 19a with the two transverse channels 14, 20. The inlet openings of the channels 19 and 21 or 20 and 21 are advantageously separated.

Der Ölkanal 16 weist einen Zufluß bei 23 auf, der mit einer Ölpumpe 24 verbunden ist. Über einen zwischengeschalteten Ölfilter 25 im Kanal 16 fließt das Öl durch den gehäuseseitigen Kanal 18 zum Ölkanal 15. Vor Eintritt in diesen Kanal 15 durchfließt das Öl einen ÖI-/Wasserwärmetauscher 26.The oil channel 16 has an inflow at 23, which is connected to an oil pump 24. The oil flows through the housing-side channel 18 to the oil channel 15 via an interposed oil filter 25 in the channel 16. Before entering this channel 15, the oil flows through an oil / water heat exchanger 26.

Die Zylinderkopfschrauben 9, 10 und 9a, 10a sind in Bohrungen 30 des Gehäuses 1 sowie der Köpfe 4 und 5 angeordnet, welche gleichzeitig Öldurchführungen bilden. Hierzu weisen sie einen größeren Durchmesser als die Schrauben auf. Von diesen Bohrungen zweigen Verbindungskanäle 31 in den Ölkanal 15 ab. Ebenfalls sind in der zweiten Gehäusehälfte 6 Verbindungskanäle 32 von den Bohrungen der Bolzen 9, 10 in den Ölkanal 17 vorgesehen. Hierdurch kann das Öl von den Ölkanälen 15 und 17 zu jeder Kopfseite 4, 5 durch die Bohrungen der Zylinderkopfschrauben 9, 9a und 10, 10a fließen, wozu von den Bohrungen jeweils ein im Kopf angeordneter Schrägkanal 33 abzweigt.The cylinder head screws 9, 10 and 9a, 10a are arranged in bores 30 of the housing 1 and the heads 4 and 5, which simultaneously form oil passages. For this purpose, they have a larger diameter than the screws. Connection channels 31 branch off from these bores into the oil channel 15. Also in the second housing half 6 connecting channels 32 are provided from the bores of the bolts 9, 10 in the oil channel 17. As a result, the oil can flow from the oil channels 15 and 17 to each head side 4, 5 through the bores of the cylinder head screws 9, 9a and 10, 10a, for which purpose an inclined channel 33 branches off from the bores.

Wie insbesondere aus den Fig. 6 und 7 näher zu erkennen ist, erstrecken sich die Ölkanäle 15, 16 und 17 nahezu über die gesamte Länge des Kurbelgehäuses 1, wobei in den Gehäusehälften 5 an beiden Längsseiten die Ölkanäle 15, 16 und an der Gehäusehälfte 6 nur an einer Längsseite der Ölkanal 17 angeordnet ist.As can be seen in particular from FIGS. 6 and 7, the oil channels 15, 16 and 17 extend almost over the entire length of the crankcase 1, with the oil channels 15, 16 and on the housing half 6 in the housing halves 5 on both long sides The oil channel 17 is arranged only on one long side.

Jede Hälfte 5,6 des Zylinderkurbelgehäuses 1 weist mindestens sich gegenüberliegende angegossene Kühlkanäle 35, 36 auf. Zwischen den Kühlkanälen 35 einer Gehäuseseite ist eine Anlasseraufnahme 37 vorgesehen, die der Gehäusehälfte 6 zugeordnet ist und mit der Trennebene a-a endet.Each half 5, 6 of the cylinder crankcase 1 has at least opposite, cast-on cooling channels 35, 36. A starter receptacle 37 is provided between the cooling channels 35 on one side of the housing and is assigned to the housing half 6 and ends with the parting plane a-a.

Gegenüberliegend an der anderen Gehäuseseite sind symmetrisch zur Trennebene a-a in die Gehäusehälften 5, 6 integriert zwei trichterförmig zulaufende Wandungen38, 39 einer Ölfangeinrichtung angegossen. Innerhalb dieser Einrichtung ist eine Zwischenwelle 40 gelagert. Diese Einrichtung ist zwischen Wänden 41, 42, welche von Kühlkanälen 36 abzweigen, angeordnet. Der von den Wänden 41, 42 gebildete Raum wird mittels eines Dekkels 43 abgeschlossen und bildet eine Ölwanne. In den Wänden 41, 42 sind ÖI-Durchtrittsöffnungen 44 vorgesehen.Opposite on the other side of the housing, two funnel-shaped walls 38, 39 of an oil trap are integrally cast into the housing halves 5, 6 symmetrically to the parting plane a-a. An intermediate shaft 40 is mounted within this device. This device is arranged between walls 41, 42, which branch off from cooling channels 36. The space formed by the walls 41, 42 is closed off by a cover 43 and forms an oil pan. Oil passage openings 44 are provided in the walls 41, 42.

Claims (11)

1. Brennkraftmaschine, insbesondere Boxermotor mit einem in Kurbelwellenlagermitte längsgeteilten Zylinderkurbelgehäuse sowie einer Lagerbrücke, welche über Zylinderkopfschrauben mit dem Kurbelgehäuse verbunden ist, dadurch gekennzeichnet, daß das Zylinderkurbelgehäuse (1) mit der Lagerbrücke (2) eine gemeinsame vertikale Trennebene (a-a) aufweist und beide Lagerbrückenhälften (2a, 2b) einerseits über Lagerstuhlschrauben (7, 8) miteinander verbunden sind und andererseits die Lagerbrücke (2) über Zylinderkopfschrauben (9, 10 und 9a, 10a) zwischen den zu beiden Seiten der Lagerbrücke (2) angeordneten Kurbelgehäusehälften (5, 6) unter Bildung von Ölkanälen (15, 16 und 17) gehalten ist und über die Schrauben (9, 10 und 9a, 10a) gleichzeitig Zylinderköpfe (3, 4) am Kurbelgehäuse (1) befestigbar sind.1. Internal combustion engine, in particular a boxer engine with a cylinder crankcase divided longitudinally in the center of the crankshaft bearing and a bearing bridge which is connected to the crankcase by means of cylinder head screws, characterized in that the cylinder crankcase (1) with the bearing bridge (2) has a common vertical parting plane (aa) and both Bearing bridge halves (2a, 2b) on the one hand are connected to one another via bearing block screws (7, 8) and, on the other hand, the bearing bridge (2) via cylinder head screws (9, 10 and 9a, 10a) between the crankcase halves (5,) arranged on both sides of the bearing bracket (2) 6) is held to form oil passages (15, 16 and 17) and, at the same time, cylinder heads (3, 4) can be fastened to the crankcase (1) via the screws (9, 10 and 9a, 10a). 2. Brennkraftmaschine nach Anspruch 1, dadurch gekennzeichnet, daß die Lagerstuhlschrauben (7, 8) jeweils gleichgerichtet in der Lagerbrücke (2) und die Zylinderkopfschrauben (9, 10) des Zylinderkopfes (3) und der Gehäusehälfte (6) den Schrauben (9a, 10a) des Zylinderkopfes (4) und der Gehäusehälfte (5) entgegengerichtet angeordnet sind.2. Internal combustion engine according to claim 1, characterized in that the bearing block screws (7, 8) each rectified in the bearing bracket (2) and the cylinder head screws (9, 10) of the cylinder head (3) and the housing half (6) the screws (9a, 10a) of the cylinder head (4) and the housing half (5) are arranged in opposite directions. 3. Brennkraftmaschine nach den Ansprüchen 1 oder 2, dadurch gekennzeichnet, daß die Zylinderkopfschrauben (9, 10 und 9a, 10a) teilweise in Öldurchführungen bildenden Bohrungen (30) des Gehäuses (1) und des Kopfes (3, 4) angeordnet sind, welche ausgangsseitig des Gehäuses (1) bzw. der Gehäusehälften (5, 6) in einer Anlagefläche (12 und 11) einen Verbindungskanal (31, 32) zu den Ölkanälen (15, 17) im Zylindergehäuse (1) aufweisen und die Bohrungen (30) mit einem Schrägkanal (33) im Zylinderkopf (3, 4) verbunden sind.3. Internal combustion engine according to claims 1 or 2, characterized in that the cylinder head screws (9, 10 and 9a, 10a) are partially arranged in oil passages forming holes (30) of the housing (1) and the head (3, 4), which on the output side of the housing (1) or the housing halves (5, 6) in a contact surface (12 and 11) have a connecting channel (31, 32) to the oil channels (15, 17) in the cylinder housing (1) and the bores (30) are connected to an inclined channel (33) in the cylinder head (3, 4). 4. Brennkraftmaschine nach Anspruch 1 oder einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Ölkanäle (15, 16 und 17) nur in den Flächen (11, 12) des Zylinderkurbelgehäuses (1) angeordnet und jeweils von einer gegenüberstehenden Anlagefläche (13, 14) der Lagerbrücke (2) abgeschlossen sind.4. Internal combustion engine according to claim 1 or one of the preceding claims, characterized in that the oil channels (15, 16 and 17) arranged only in the surfaces (11, 12) of the cylinder crankcase (1) and each of an opposing contact surface (13, 14th ) the bearing bridge (2) are completed. 5. Brennkraftmaschine nach Anspruch 1 oder einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Ölkanäle (15, 16 und 17) im Zylinderkurbelgehäuse (1) sich annähernd über die gesamte Länge zu beiden Längsseiten jeder Gehäusehälfte (6) erstrekken und die Kanäle (15 und 16) miteinander über mindestens einen Gehäusequerkanal (18) verbunden sind und gegenüberliegende Ölkanäle (15, 17) der Gehäusehälften (5, 6) an Schräg- und Querkanälen (21, 19, 20) in der Lagerbrücke (2) angeschlossen sind.5. Internal combustion engine according to claim 1 or one of the preceding claims, characterized in that the oil channels (15, 16th and 17) in the cylinder crankcase (1) extend approximately over the entire length to both long sides of each housing half (6) and the channels (15 and 16) are connected to one another via at least one housing transverse channel (18) and opposite oil channels (15, 17) Housing halves (5, 6) are connected to inclined and transverse channels (21, 19, 20) in the bearing bracket (2). 6. Brennkraftmaschine nach Anspruch 1 oder einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß mindestens ein Querkanal (19, 20) oberhalb der Kurbelwellenlagerung vorgesehen ist, der mit den zu den Lagerstellen (22) geführten Schrägkanälen (21) jeweils in den Ölkanal an der Längsseite mündet.6. Internal combustion engine according to claim 1 or one of the preceding claims, characterized in that at least one transverse channel (19, 20) is provided above the crankshaft bearing, with the inclined channels (21) guided to the bearing points (22) each in the oil channel at the Long side opens. 7. Brennkraftmaschine nach Anspruch 1 oder einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Ölkanal (16) der einen Längsseite in der Gehäusehälfte (5) mit einer Ölpumpe (24) verbunden ist und zwischen einer Zu- und Abflußbohrung (16a, 16b) des Kanals (16) ein Ölfilter (25) angeordnet ist und zwischen diesem Ölkanal (16) und dem weiteren Ölkanal (15) an der anderen Längsseite der Gehäusehälfte (5) ein ÖI-/WasserWärmetauscher (26) vorgesehen ist.7. Internal combustion engine according to claim 1 or one of the preceding claims, characterized in that the oil channel (16) of one longitudinal side in the housing half (5) is connected to an oil pump (24) and between an inflow and outflow bore (16a, 16b) an oil filter (25) is arranged in the channel (16) and an oil / water heat exchanger (26) is provided between this oil channel (16) and the further oil channel (15) on the other long side of the housing half (5). 8. Brennkraftmaschine nach Anspruch 1 oder einen der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die eine Gehäusehälfte (5) an beiden Längsseiten jeweils den Ölkanal (15, 16) aufweist, wobei die andere Gehäusehälfte (6) nur an einer Längsseite den Ölkanal (17) aufweist, in den die Querkanäle (19, 20) der Lagerbrücke (2) einmünden.8. Internal combustion engine according to claim 1 or one of the preceding claims, characterized in that the one housing half (5) on both long sides each has the oil channel (15, 16), the other housing half (6) only on one long side of the oil channel (17th ) into which the transverse channels (19, 20) of the bearing bridge (2) open. 9. Brennkraftmaschine nach Anspruch 1 oder einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß jede Hälfte (5, 6) des Zylinderkurbelgehäuses (1) mindestens sich gegenüberliegende angegossene Kühlkanäle (35, 36) aufweist und jeweils zwischen zwei Kühlkanälen (35) einer Gehäuseseite eine in der Gehäusehälfte (6) integrierte Anlasseraufnahme (37) angeordnet ist.9. Internal combustion engine according to claim 1 or one of the preceding claims, characterized in that each half (5, 6) of the cylinder crankcase (1) has at least opposite molded cooling channels (35, 36) and each between two cooling channels (35) one side of the housing integrated starter mount (37) is arranged in the housing half (6). 10. Brennkraftmaschine nach Anspruch 9, dadurch gekennzeichnet, daß zwischen zwei Kühlkanälen (36) der weiteren Gehäuseseite in der Gehäusetrennebene (a-a) zusammentreffende, trichtenförmig zulaufende Wandungen (38, 39) vorgesehen sind, zwischen denen eine Zwischenwelle (40) gelagert ist.10. Internal combustion engine according to claim 9, characterized in that between two cooling channels (36) of the further housing side in the housing parting plane (a-a) meeting, tapered walls (38, 39) are provided, between which an intermediate shaft (40) is mounted. 11. Brennkraftmaschine nach den Ansprüchen 9 oder 10, dadurch gekennzeichnet, daß von den Kühlkanälen (36) Wandungen (41, 42) zur Bildung einer Ölwanne abzweigen, in der die trichterförmig zulaufenden Wandungen (38, 39) angeordnet sind, welche Öffnungen (44) zum Öldurchtritt aufweisen.11. Internal combustion engine according to claims 9 or 10, characterized in that from the cooling channels (36) branches (41, 42) to form an oil pan, in which the funnel-shaped walls (38, 39) are arranged, which openings (44 ) for oil passage.
EP95100638A 1994-02-18 1995-01-19 Internal combustion engine Expired - Lifetime EP0668440B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4405188 1994-02-18
DE4405188A DE4405188C2 (en) 1994-02-18 1994-02-18 Internal combustion engine

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EP0668440A1 true EP0668440A1 (en) 1995-08-23
EP0668440B1 EP0668440B1 (en) 1998-03-04

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DE (2) DE4405188C2 (en)

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EP1477640B1 (en) * 2002-02-20 2011-08-24 Yamaha Hatsudoki Kabushiki Kaisha Lubrication device of engine
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Also Published As

Publication number Publication date
EP0668440B1 (en) 1998-03-04
DE4405188C2 (en) 1997-10-02
DE4405188A1 (en) 1995-08-24
US5579729A (en) 1996-12-03
JPH07259637A (en) 1995-10-09
DE59501510D1 (en) 1998-04-09

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