EP1457646B1 - Oil collecting device for an engine, particularly for a flat engine - Google Patents

Oil collecting device for an engine, particularly for a flat engine Download PDF

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Publication number
EP1457646B1
EP1457646B1 EP04004754A EP04004754A EP1457646B1 EP 1457646 B1 EP1457646 B1 EP 1457646B1 EP 04004754 A EP04004754 A EP 04004754A EP 04004754 A EP04004754 A EP 04004754A EP 1457646 B1 EP1457646 B1 EP 1457646B1
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EP
European Patent Office
Prior art keywords
oil
collecting
chamber
collecting device
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
EP04004754A
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German (de)
French (fr)
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EP1457646A1 (en
Inventor
Christian Schwarzl
Tobias Bäumler
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Dr Ing HCF Porsche AG
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Dr Ing HCF Porsche AG
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Publication of EP1457646A1 publication Critical patent/EP1457646A1/en
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Classifications

    • 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
    • F01M11/0004—Oilsumps
    • 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
    • F01M11/0004—Oilsumps
    • F01M2011/0033—Oilsumps with special means for guiding the return of oil into the sump
    • 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
    • F01M11/0004—Oilsumps
    • F01M2011/0037—Oilsumps with different oil compartments
    • 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
    • F01M11/0004—Oilsumps
    • F01M2011/0037—Oilsumps with different oil compartments
    • F01M2011/0045—Oilsumps with different oil compartments for controlling the oil temperature
    • 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
    • F01M11/0004—Oilsumps
    • F01M2011/007—Oil pickup tube to oil pump, e.g. strainer
    • 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

Definitions

  • the invention relates to an oil collecting device for an internal combustion engine, in particular for a boxer engine according to the preamble of patent claim 1.
  • an oil sump box attached to the sump cover is provided in the oil guide housing or in the oil sump, in which the oil sump is designed to supply the engine with lubricating oil is.
  • the returned by the consumers in the oil pan lubricating oil is first returned outside of the ⁇ labsaugraum forming oil pan box before it passes through the monitored in ⁇ lschottkasten by flaps openings in the actual ⁇ labsaugraum.
  • DE 101 39 709 A1 shows an oil-collecting device for an internal combustion engine, in particular for a boxer engine, in which an oil-collecting housing is arranged below the crankcase.
  • an oil-collecting housing is arranged below the crankcase.
  • ⁇ llaufammgephinuse two ⁇ lsammelsammlung are formed next to an ⁇ labsaugraum, the separation takes place over a wall portion.
  • a flap is provided which controls the passage of oil from the oil collecting space in the ⁇ labsaugraum.
  • Oil return lines for lubricating oil extracted from the engine lead to swirl spots located in the oil collection spaces.
  • the Swirlpots are used to defoam the oil, which can pass over the flaps in the ⁇ labsaugraum after defoaming.
  • the object of the invention is to further improve the so-called integrated dry sump in terms of its functionality, in order to achieve a high degree of integration, which at the same time includes a reduction of the preassembly circumference.
  • a bevel formed out of a wall section is provided in the oil collecting space, which serves as a drainage surface for the lubricating oil returned to the oil collecting space.
  • This sloping side wall of the oil collection chamber supported in an advantageous manner, the oil return from the cylinder heads to the extraction point.
  • the recirculated for example from the cylinder heads lubricating oil meets the sloping drainage surface and from there via the openings provided in the oil bulkhead openings in the ⁇ labsaugraum over.
  • the provided in the oil collection chamber with the lubricating oil - drainage wall portion is advantageously integrally formed from a oil cap the oil cap downwards final oil cap.
  • provided for the drainage plastic part can be formed so that the existing dead spaces existing in the oil sump can be substantially reduced.
  • the obliquely extending run-off surfaces which are provided at the same time for defoaming the lubricating oil, can additionally be provided with ribs, nubs or the like. Molded bodies, so that the lubricating oil is degassed accordingly on the way into the ⁇ labsaugraum.
  • the two oil bulkheads delimiting the oil suction chamber and oil return pipes arranged in the oil collecting chamber are combined in one piece as a type of pre - assembly module.
  • the integration of the components belonging to the dry sump is further increased when the ⁇ labsaugschnorchel arranged in the oil collecting space is combined with the two oil return lines as a common module in one piece.
  • the crankcase of a 6-cylinder boxer engine shown in section in FIG. 2 consists, without limitation, of this embodiment of two crankcase halves 2 and 4 with two horizontally arranged rows of cylinder banks 1 to 3 and 4 to 6 (not shown). From each of the two crankcase halves 2 and 4, a downwardly extending wall portion 6 and 8 is formed, which together with an attached to the flange 10 and 12 of the two wall sections 6 and 8 oil cover 14, an oil collection housing, hereinafter referred to as oil sump form.
  • the oil pan has an ⁇ labsaugraum 16, in which a leading to a main oil pump, not shown ⁇ labsaugschnorchel 18 is arranged.
  • both oil collecting spaces 20 and 22 are formed, which are separated from the ⁇ labsaugraum 16 by two oil bulkheads 24 and 26.
  • Both oil bulkhead walls 24 and 26 are each provided with three window-like passage openings 28, 29 and 30, which are monitored by a respective functioning as a check valve flow flap 32 and 34.
  • 26 retaining pins 36 are provided for each flow flap 32, 34, where the flow flap 32, 34 is mounted;
  • the elastically formed flow flaps 32, 34 are made of rubber.
  • a further rectangular opening 38 and 40 to each of which, a funnel-shaped widening oil return line 42 and 44 is introduced.
  • the respective other end of the two oil return lines 42, 44 is connected via a respective connecting piece 46 and 48 to two integrated in the crankcase halves 2 and 4 return channels 50.
  • Both formed by the crankcase halves 2 and 4 oil return passages 50 are separated by a partition, not shown, which is arranged in the region between the two connecting pieces 46 and 48.
  • Both connecting pieces 46, 48 are connected to each other via a connection plate 52; the latter is attached via two screw 54 and 56 on the crankcase 2, 4.
  • the ⁇ labsaugschnorchel 18 is integrally connected to the connection plate 52, wherein the connecting flange 58 of the ⁇ labsaugschnorchels 18 is bolted to the crankcase 2.
  • the two oil bulkheads 24, 26 and the two oil return lines 42, 44 together with the ⁇ labsaugschnorchel 18 a one-piece plastic bulkhead module, which is designed as a prefabricated mounting unit.
  • the also made of plastic oil cover 14 has to the lateral boundary of the two oil collecting chambers 20 and 22 two integral with the oil cover 14 connected ramps 60 and 62, which engage in the assembled state of the engine in the two oil collecting spaces 20 and 22.
  • the two ramps 60 and 62 each have a the oil collecting space 20 and 22 delimiting and provided with a slope wall portion 64 and 66, which serves as an oil drainage surface for in the oil collection chamber 20, 22 recirculated lubricating oil, as explained in more detail below.
  • From the oil cover 14 two cylindrical Abdichtstutzen 68 and 70 are further formed, which engage in the mounted state provided in the crankcase 2, 4 openings 72 and 74 sealingly.
  • two coolant channels are sealed, which adjoin the oil sump of the crankcase.
  • a drain plug for the coolant can be provided in one of these seals.
  • the existing oil plastic cover 14 has to seal against the flange surfaces 10, 12 a circumferential groove-shaped contour 76, in which an elastomeric seal 77 is inserted.
  • 4 are still on the Outer contour of the oil cover 14 corresponding Flansch - screwing 78 formed.
  • cup-shaped recess 80 engages the ⁇ labsaugschnorchel 18 a.
  • the oil return into the sump is done in the following way:
  • the extracted from the two cylinder heads of the engine lubricating oil is fed back via the two oil return passages 50 (oil return on the arrows in Fig. 1) and the two oil return lines 42 and 44 in the two oil collecting spaces 20 and 22.
  • the lubricating oil exits into the oil collecting chambers 20, 22, the lubricating oil strikes the two inclined wall sections 64, 66 of the two ramps 60, 62 arranged in the oil collecting chamber 20, 22 and flows therefrom, depending on the height of the oil level through the flaps 32, 34 monitored openings 28 to 30 in the ⁇ labsaugraum 16 a. From there, it is fed back to the consumers in a known manner via the main oil pump, not shown.
  • the lubricating oil When the lubricating oil drains from the wall sections 64, 66, the lubricating oil can be defoamed and thus the gaseous constituents separated from the lubricating oil.
  • the defoaming of the back-flowing lubricating oil can be further improved if the drainage surfaces 64, 66 are additionally provided with ribs, nubs o. ⁇ . Formed bodies.
  • a second embodiment is shown, which is only slightly modified compared to the first embodiment and is identical in function to the first embodiment.
  • the ⁇ labsaugschnorchel 18 is not integrally attached to the bulkhead module, but separately extending, arranged.

Description

Die Erfindung betrifft eine Ölauffangvorrichtung für eine Brennkraftmaschine, insbesondere für einen Boxermotor nach dem Oberbegriff des Patentanspruchs 1.The invention relates to an oil collecting device for an internal combustion engine, in particular for a boxer engine according to the preamble of patent claim 1.

Bei den heutigen wassergekühlten 6 - Zylinder - Boxermotoren der Modellreihe 911 Carrera (Firma Dr. Ing. h.c. F. Porsche AG) ist im Ölführungsgehäuse bzw. in der Ölwanne ein am Ölwannendeckel befestigter Ölschottkasten vorgesehen, in dem der Ölsumpf für die Schmierölversorgung des Motors ausgebildet ist. Das von den Verbrauchern in die Ölwanne zurückgeführte Schmieröl wird zuerst außerhalb des den Ölabsaugraum bildenden Ölschottkastens zurückgeleitet, bevor es über im Ölschottkasten durch Klappen überwachte Öffnungen in den eigentlichen Ölabsaugraum übertritt.In today 's water - cooled 6 - cylinder boxer engines of the model 911 Carrera (Dr. Ing. Hc F. Porsche AG), an oil sump box attached to the sump cover is provided in the oil guide housing or in the oil sump, in which the oil sump is designed to supply the engine with lubricating oil is. The returned by the consumers in the oil pan lubricating oil is first returned outside of the Ölabsaugraum forming oil pan box before it passes through the monitored in Ölschottkasten by flaps openings in the actual Ölabsaugraum.

Aus der GB 2 278 400 A ist bereits eine Ölwanne für eine Brennkraftmaschine bekannt geworden, bei der innerhalb der Ölwanne ein Ölabsaugraum und ein Ölsammelraum gebildet sind, die durch eine Klappe voneinander getrennt werden. Ein Teil des Wandbereiches des Ölsammelraumes verläuft schräg zur Klappe hin abfallend.From GB 2 278 400 A an oil pan for an internal combustion engine is already known, in which an oil suction and an oil collection chamber are formed within the oil pan, which are separated by a flap. Part of the wall area of the oil collecting space slopes downwards towards the flap.

Die DE 101 39 709 A1 zeigt eine Ölauffangvorrichtung für eine Brennkraftmaschine, insbesondere für einen Boxermotor, bei der unterhalb des Kurbelgehäuses ein Ölauffanggehäuse angeordnet ist. Im Ölauffanggehäuse sind neben einem Ölabsaugraum zwei Ölsammelräume gebildet, wobei die Abtrennung über einen Wandabschnitt erfolgt. Im Wandabschnitt ist eine Klappe vorgesehen, die den Durchtritt von Öl vom Ölsammelraum in den Ölabsaugraum kontrolliert. Ölrückführleitungen für aus dem Motor abgesaugtes Schmieröl führen zu Swirlpots, die in den Ölsammelräumen angeordnet sind. Die Swirlpots dienen zur Entschäumung des Öles, das nach dem Entschäumen über die Klappen in den Ölabsaugraum übertreten kann.DE 101 39 709 A1 shows an oil-collecting device for an internal combustion engine, in particular for a boxer engine, in which an oil-collecting housing is arranged below the crankcase. In Öllaufammgehäuse two Ölsammelräume are formed next to an Ölabsaugraum, the separation takes place over a wall portion. In the wall portion, a flap is provided which controls the passage of oil from the oil collecting space in the Ölabsaugraum. Oil return lines for lubricating oil extracted from the engine lead to swirl spots located in the oil collection spaces. The Swirlpots are used to defoam the oil, which can pass over the flaps in the Ölabsaugraum after defoaming.

Aufgabe der Erfindung ist es, den sog. integrierten Trockensumpf hinsichtlich seiner Funktionalität weiter zu verbessern, um einen hohen Integrationsgrad zu erreichen, der gleichzeitig eine Reduzierung des Vormontageumfanges mit einschliesst.The object of the invention is to further improve the so-called integrated dry sump in terms of its functionality, in order to achieve a high degree of integration, which at the same time includes a reduction of the preassembly circumference.

Diese Aufgabe wird erfindungsgemäß mit den Merkmalen des Patentanspruchs 1 gelöst.This object is achieved with the features of claim 1.

Erfindungsgemäß ist im Ölsammelraum eine aus einem Wandabschnitt herausgebildete Schräge vorgesehen, die als Ablauffläche für das in den Ölsammelraum zurückgeführte Schmieröl dient. Diese schräg verlaufende Seitenwand des Ölsammelraums unterstützt auf vorteilhafte Art und Weise den Ölrücklauf aus den Zylinderköpfen zur Absaugstelle. Das beispielsweise aus den Zylinderköpfen zurückgeführte Schmieröl trifft auf die schräg verlaufende Ablauffläche und tritt von dort aus über die in der Ölschottwand vorgesehenen Öffnungen in den Ölabsaugraum über. Durch die Ausbildung schräg verlaufender Ablaufflächen kann das Volumen des Ölsammelraumes unter Beibehaltung der Funktionalität der Druckumlaufschmierung verringert werden. Gleichzeitig dienen die Ablaufflächen durch das definiert ausgerichtete Anströmen des rücklaufenden Öls zur Entschäumung des Schmieröls; sie übernehmen damit die Funktion der ansonsten üblicherweise verwendeten Öl / Luftabscheider, der sog. Swirlpots.According to the invention, a bevel formed out of a wall section is provided in the oil collecting space, which serves as a drainage surface for the lubricating oil returned to the oil collecting space. This sloping side wall of the oil collection chamber supported in an advantageous manner, the oil return from the cylinder heads to the extraction point. The recirculated for example from the cylinder heads lubricating oil meets the sloping drainage surface and from there via the openings provided in the oil bulkhead openings in the Ölabsaugraum over. By forming oblique drainage surfaces, the volume of the oil collection chamber can be reduced while maintaining the functionality of the pressure circulation lubrication. At the same time serve the drainage surfaces by the defined aligned flow of the returning oil to Defoaming the lubricating oil; They thus assume the function of the otherwise commonly used oil / air separator, the so-called. Swirl spots.

Weitere Vorteile und vorteilhafte Ausgestaltungen der Erfindung ergeben sich aus den Unteransprüchen und der Beschreibung.Further advantages and advantageous embodiments of the invention will become apparent from the dependent claims and the description.

Der im Ölsammelraum mit der Schmieröl - Ablauffläche versehene Wandabschnitt ist auf vorteilhafte Art und Weise einstückig aus einem das Ölauffanggehäuse nach unten abschließenden Öldeckel herausgebildet. Dabei kann das für die Ablauffläche vorgesehene Kunststoffteil so ausgeformt werden, das bisherige im Ölsumpf vorhandene Toträume wesentlich verringert werden können. Damit kann die Brennkraftmasche mit einer geringeren SchmiermitteWmlaufmenge betrieben werden, wodurch Gewichts- und Kostenvorteile geltend gemacht werden können.The provided in the oil collection chamber with the lubricating oil - drainage wall portion is advantageously integrally formed from a oil cap the oil cap downwards final oil cap. In this case, provided for the drainage plastic part can be formed so that the existing dead spaces existing in the oil sump can be substantially reduced. Thus, the Brennkraftmasche can be operated with a smaller SchmiermitteWmlaufmenge, whereby weight and cost advantages can be claimed.

Die schräg verlaufenden Ablaufflächen, die gleichzeitig zur Entschäumung des Schmieröls vorgesehen sind, können noch zusätzlich mit Rippen, Noppen o. ä. Formkörpern versehen werden, so dass das Schmieröl auf dem Weg in den Ölabsaugraum entsprechend entgast wird.The obliquely extending run-off surfaces, which are provided at the same time for defoaming the lubricating oil, can additionally be provided with ribs, nubs or the like. Molded bodies, so that the lubricating oil is degassed accordingly on the way into the Ölabsaugraum.

Die beiden den Ölabsaugraum begrenzenden Ölschottwände sowie im Ölsammelraum angeordnete Ölrücklaufleitungen sind als eine Art Vormontage - Modul einstückig zusammengefasst. Die Integration der zum Trockensumpf gehörenden Bauteile ist weiter erhöht, wenn der im Ölsammelraum angeordnete Ölabsaugschnorchel mit den beiden Ölrücklaufleitungen als gemeinsames Modul einstückig zusammengefasst ist.The two oil bulkheads delimiting the oil suction chamber and oil return pipes arranged in the oil collecting chamber are combined in one piece as a type of pre - assembly module. The integration of the components belonging to the dry sump is further increased when the Ölabsaugschnorchel arranged in the oil collecting space is combined with the two oil return lines as a common module in one piece.

Zwei Ausführungsbeispiele der Erfindung sind in der nachfolgenden Beschreibung und Zeichnung näher erläutert.Two embodiments of the invention are explained in more detail in the following description and drawings.

Es zeigen:

Fig. 1
eine Ansicht auf das Ölführungsgehäuse von unten,
Fig. 2
einen Querschnitt durch das Ölführungsgehäuse,
Fig. 3
eine Perspektivansicht auf einen Öldeckel mit einem Schottraummodul,
Fig. 4
eine Einzeldarstellung des Schottraummoduls,
Fig. 5
das Schottraummodul nach einem zweiten Ausführungsbeispiel und
Fig. 6
eine Perspektivansicht auf den Öldeckel mit Ablaufflächen für das Schmieröl.
Show it:
Fig. 1
a view of the oil guide housing from below,
Fig. 2
a cross section through the oil guide housing,
Fig. 3
a perspective view of an oil cover with a bulkhead module,
Fig. 4
an individual view of the bulkhead module,
Fig. 5
the bulkhead module according to a second embodiment and
Fig. 6
a perspective view of the oil cap with drainage surfaces for the lubricating oil.

Das in Fig. 2 im Schnitt dargestellte Kurbelgehäuse eines 6 - Zylinder Boxermotors besteht ohne Einschränkung auf diese Ausführungsform aus zwei Kurbelgehäusehälften 2 und 4 mit zwei horizontal angeordneten Zylinderbankreihen 1 bis 3 und 4 bis 6 (nicht dargestellt). Aus jedem der beiden Kurbelgehäusehälften 2 und 4 ist ein nach unten verlaufender Wandabschnitt 6 und 8 herausgebildet, die zusammen mit einem an den Flanschflächen 10 und 12 der beiden Wandabschnitte 6 und 8 befestigten Öldeckel 14 ein Ölauffanggehäuse, im folgenden als Ölwanne bezeichnet, bilden. Die Ölwanne weist einen Ölabsaugraum 16 auf, in dem ein zu einer nicht dargestellten Hauptölpumpe führender Ölabsaugschnorchel 18 angeordnet ist. Links und rechts vom Ölabsaugraum 16 sind zwei Ölsammelräume 20 und 22 ausgebildet, die gegenüber dem Ölabsaugraum 16 durch zwei Ölschottwände 24 und 26 abgetrennt sind. Beide Ölschottwände 24 und 26 sind mit jeweils drei fensterartigen Durchtrittsöffnungen 28, 29 und 30 versehen, die durch jeweils eine als Rückschlagventil fungierende Strömungsklappe 32 und 34 überwacht sind. Zur Befestigung der nur in den Ölabsaugraum 16 öffnenden Strömungsklappen 32 und 34 sind für jede Strömungsklappe 32, 34 jeweils vier an den Ölschottwänden 24, 26 befestigte Haltepins 36 vorgesehen, an denen die Strömungsklappe 32, 34 gelagert ist; vorzugsweise bestehen die elastisch ausgebildeten Strömungsklappen 32, 34 aus Gummi.The crankcase of a 6-cylinder boxer engine shown in section in FIG. 2 consists, without limitation, of this embodiment of two crankcase halves 2 and 4 with two horizontally arranged rows of cylinder banks 1 to 3 and 4 to 6 (not shown). From each of the two crankcase halves 2 and 4, a downwardly extending wall portion 6 and 8 is formed, which together with an attached to the flange 10 and 12 of the two wall sections 6 and 8 oil cover 14, an oil collection housing, hereinafter referred to as oil sump form. The oil pan has an Ölabsaugraum 16, in which a leading to a main oil pump, not shown Ölabsaugschnorchel 18 is arranged. To the left and right of the Ölabsaugraum 16 two oil collecting spaces 20 and 22 are formed, which are separated from the Ölabsaugraum 16 by two oil bulkheads 24 and 26. Both oil bulkhead walls 24 and 26 are each provided with three window-like passage openings 28, 29 and 30, which are monitored by a respective functioning as a check valve flow flap 32 and 34. For attachment of only in the Ölabsaugraum 16 opening flow flaps 32 and 34 four fortified on the oil bulkheads 24, 26 retaining pins 36 are provided for each flow flap 32, 34, where the flow flap 32, 34 is mounted; Preferably, the elastically formed flow flaps 32, 34 are made of rubber.

Oberhalb der drei in den beiden Ölschottwänden 22 und 24 angeordneten Durchtrittsöffnungen 28 bis 30 ist jeweils eine weitere rechteckförmige Öffnung 38 und 40 vorgesehen, an die jeweils eine, sich trichterförmig erweiternde Ölrücklaufleitung 42 bzw. 44 herangeführt ist. Das jeweils andere Ende der beiden Ölrücklaufleitungen 42, 44 ist über jeweils ein Anschlussstück 46 und 48 an zwei in den Kurbelgehäusehälften 2 und 4 integrierten Rücklaufkanälen 50 angeschlossen. Beide durch die Kurbelgehäusehälften 2 und 4 gebildeten Ölrücklaufkanäle 50 sind durch eine nicht dargestellte Trennwand, die im Bereich zwischen den beiden Anschlussstücken 46 und 48 angeordnet ist, getrennt. Beide Anschlussstücke 46, 48 sind über eine Anschlussplatte 52 miteinander verbunden; letztgenannte ist über zwei Verschraubungspunkte 54 und 56 am Kurbelgehäuse 2, 4 befestigt. An der Anschlussplatte 52 ist gleichzeitig der Ölabsaugschnorchel 18 einstückig angebunden, wobei der Anschlussflansch 58 des Ölabsaugschnorchels 18 am Kurbelgehäuse 2 verschraubt ist. Wie in Fig. 4 dargestellt, bilden die beiden Ölschottwände 24, 26 sowie die beiden Ölrücklaufleitungen 42, 44 zusammen mit dem Ölabsaugschnorchel 18 ein einstückiges Kunststoff- Schottraummodul, das als vorgefertigte Montageeinheit ausgebildet ist.Above the three arranged in the two oil bulkheads 22 and 24 passages 28 to 30 is in each case a further rectangular opening 38 and 40, to each of which, a funnel-shaped widening oil return line 42 and 44 is introduced. The respective other end of the two oil return lines 42, 44 is connected via a respective connecting piece 46 and 48 to two integrated in the crankcase halves 2 and 4 return channels 50. Both formed by the crankcase halves 2 and 4 oil return passages 50 are separated by a partition, not shown, which is arranged in the region between the two connecting pieces 46 and 48. Both connecting pieces 46, 48 are connected to each other via a connection plate 52; the latter is attached via two screw 54 and 56 on the crankcase 2, 4. At the same time the Ölabsaugschnorchel 18 is integrally connected to the connection plate 52, wherein the connecting flange 58 of the Ölabsaugschnorchels 18 is bolted to the crankcase 2. As shown in Fig. 4, the two oil bulkheads 24, 26 and the two oil return lines 42, 44 together with the Ölabsaugschnorchel 18 a one-piece plastic bulkhead module, which is designed as a prefabricated mounting unit.

Der ebenfalls aus Kunststoff bestehende Öldeckel 14 weist zur seitlichen Begrenzung der beiden Ölsammelräume 20 und 22 zwei einstückig mit dem Öldeckel 14 verbundene Rampen 60 und 62 auf, die im montierten Zustand des Motors in die beiden Ölsammelräume 20 und 22 eingreifen. Die beiden Rampen 60 und 62 weisen jeweils einen den Ölsammelraum 20 bzw. 22 begrenzenden und mit einer Schräge versehenen Wandabschnitt 64 und 66 auf, der als Ölablauffläche für das in den Ölsammelraum 20, 22 zurückgeführte Schmieröl, wie später noch näher erläutert, dient. Aus dem Öldeckel 14 sind weiterhin zwei zylinderförmige Abdichtstutzen 68 und 70 herausgebildet, die im montierten Zustand in im Kurbelgehäuse 2, 4 vorgesehene Öffnungen 72 und 74 abdichtend eingreifen. Damit werden zwei Kühlmittelkanäle abgedichtet, die an den Ölsumpf des Kurbelgehäuses angrenzen. Zusätzlich kann in einer dieser Abdichtungen noch eine Ablassschraube für das Kühlmittel vorgesehen werden. Der aus Kunststoff bestehende Öldeckel 14 weist zur Abdichtung gegenüber den Flanschflächen 10, 12 eine umlaufende nutenförmige Kontur 76 auf, in die eine Elastomerdichtung 77 eingelegt ist. Für die Verschraubung des Öldeckels 14 am Kurbelgehäuse 2, 4 sind weiterhin an der Außenkontur des Öldeckels 14 entsprechende Flansch - Verschraubungspunkte 78 herausgebildet. In eine im Öldeckel 14 vorgesehene topfförmige Ausnehmung 80 greift der Ölabsaugschnorchel 18 ein.The also made of plastic oil cover 14 has to the lateral boundary of the two oil collecting chambers 20 and 22 two integral with the oil cover 14 connected ramps 60 and 62, which engage in the assembled state of the engine in the two oil collecting spaces 20 and 22. The two ramps 60 and 62 each have a the oil collecting space 20 and 22 delimiting and provided with a slope wall portion 64 and 66, which serves as an oil drainage surface for in the oil collection chamber 20, 22 recirculated lubricating oil, as explained in more detail below. From the oil cover 14 two cylindrical Abdichtstutzen 68 and 70 are further formed, which engage in the mounted state provided in the crankcase 2, 4 openings 72 and 74 sealingly. Thus, two coolant channels are sealed, which adjoin the oil sump of the crankcase. In addition, a drain plug for the coolant can be provided in one of these seals. The existing oil plastic cover 14 has to seal against the flange surfaces 10, 12 a circumferential groove-shaped contour 76, in which an elastomeric seal 77 is inserted. For the screw connection of the oil cover 14 on the crankcase 2, 4 are still on the Outer contour of the oil cover 14 corresponding Flansch - screwing 78 formed. Into a provided in the oil cover 14 cup-shaped recess 80 engages the Ölabsaugschnorchel 18 a.

Die Ölrückführung in die Ölwanne erfolgt auf folgende Art und Weise:The oil return into the sump is done in the following way:

Das aus den beiden Zylinderköpfen des Motors abgesaugte Schmieröl wird über die beiden Ölrücklaufkanäle 50 (Ölrücklauf anhand der Pfeile in Fig. 1 dargestellt) und über die beiden Ölrücklaufleitungen 42 und 44 in die beiden Ölsammelräume 20 und 22 zurückgefördert. Beim Austreten des Schmieröls in die Ölsammelräume 20, 22 trifft das Schmieröl auf die beiden schräg verlaufenden Wandabschnitte 64, 66 der beiden im Ölsammelraum 20, 22 angeordneten Rampen 60, 62, fließt an diesen ab und tritt in Abhängigkeit von der Höhe des Ölspiegels über die durch die Klappen 32, 34 überwachten Öffnungen 28 bis 30 in den Ölabsaugraum 16 ein. Von dort aus wird es auf bekannte Art und Weise über die nicht dargestellte Hauptölpumpe den Verbrauchern wieder zugeführt. Beim Ablaufen des Schmieröls an den Wandabschnitten 64, 66 kann das Schmieröl entschäumt und somit die gashaltigen Bestandteile vom Schmieröl getrennt werden. Die Entschäumung des rückströmenden Schmieröls kann weiter verbessert werden, wenn die Ablaufflächen 64, 66 noch zusätzlich mit Rippen, Noppen o. ä. Formkörpern versehen werden.The extracted from the two cylinder heads of the engine lubricating oil is fed back via the two oil return passages 50 (oil return on the arrows in Fig. 1) and the two oil return lines 42 and 44 in the two oil collecting spaces 20 and 22. When the lubricating oil exits into the oil collecting chambers 20, 22, the lubricating oil strikes the two inclined wall sections 64, 66 of the two ramps 60, 62 arranged in the oil collecting chamber 20, 22 and flows therefrom, depending on the height of the oil level through the flaps 32, 34 monitored openings 28 to 30 in the Ölabsaugraum 16 a. From there, it is fed back to the consumers in a known manner via the main oil pump, not shown. When the lubricating oil drains from the wall sections 64, 66, the lubricating oil can be defoamed and thus the gaseous constituents separated from the lubricating oil. The defoaming of the back-flowing lubricating oil can be further improved if the drainage surfaces 64, 66 are additionally provided with ribs, nubs o. Ä. Formed bodies.

In Fig. 5 ist ein zweites Ausführungsbeispiel dargestellt, das gegenüber dem ersten Ausführungsbeispiel nur leicht abgewandelt und von der Funktionsweise identisch zum ersten Ausführungsbeispiel ausgebildet ist. Im Gegensatz zum ersten Ausführungsbeispiel ist der Ölabsaugschnorchel 18 nicht einstückig am Schottraummodul befestigt, sondern separat dazu verlaufend, angeordnet.In Fig. 5, a second embodiment is shown, which is only slightly modified compared to the first embodiment and is identical in function to the first embodiment. In contrast to the first embodiment, the Ölabsaugschnorchel 18 is not integrally attached to the bulkhead module, but separately extending, arranged.

Claims (6)

  1. An oil-collecting device for an internal-combustion engine, in particular for an opposed-cylinder engine, with an oil-collecting housing which is arranged below a crankcase and in which is formed an oil-suction chamber (16) from which the lubricating oil is conveyed to the consumer devices by way of a main oil pump provided with an oil-suction line, and at least one oil-collecting chamber (20, 22), in which the lubricating oil arriving from the consumer devices is returned by way of an oil line, adjoins the oil-suction chamber, wherein the oil-suction chamber is separated from the oil-collecting chamber by at least one oil-partition wall (24, 26) in which is arranged at least one passage opening (28 to 30) which is controllable by way of a flap (32, 34) and by way of which the lubricating oil can pass from the oil-collecting chamber to the oil-suction chamber, wherein a wall portion (64, 66) is provided which bounds the oil-collecting chamber (20, 22) and is spaced from the oil-partition wall (24, 26) and which extends in an obliquely sloping manner with respect to the passage opening (28 to 30) in the oil-partition wall (24, 26) and is used as a run-off face for the lubricating oil returned to the oil-collecting chamber (20, 22), characterized in that two oil-return lines (42, 44), which at one end are connected to oil-return ducts (50) incorporated in the crankcase (2, 4) and at the other end open into at least one opening (38, 40) provided in the oil-partition wall (24, 26) in each case, are arranged in the oil-collecting chamber (16) [sic].
  2. An oil-collecting device according to Claim 1, characterized in that the wall portion (64, 66) is part of a ramp (60, 62) which is constructed in one piece from an oil cover (14) closing the oil-collecting housing off at the bottom.
  3. An oil-collecting device according to Claim 2, characterized in that the oil cover (14) and the ramp (60, 62) consist of plastics material.
  4. An oil-collecting device according to any one of the preceding Claims, characterized in that an oil-collecting chamber (20, 22) separated by an oil-partition wall (24, 26) is provided to the left and right of the oil-suction chamber (16) in each case.
  5. An oil-collecting device according to Claim 5 [sic], characterized in that the two oil-partition walls (24, 26) and the two oil-return lines (42, 44) are combined as a partition chamber module.
  6. An oil-collecting device according to Claim 6 [sic], characterized in that an oil-suction snorkel (18) is combined with the two oil-return lines (42, 44).
EP04004754A 2003-03-08 2004-02-26 Oil collecting device for an engine, particularly for a flat engine Expired - Lifetime EP1457646B1 (en)

Applications Claiming Priority (2)

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DE10310179A DE10310179B4 (en) 2003-03-08 2003-03-08 Oil catcher for an internal combustion engine, in particular for a boxer engine
DE10310179 2003-03-08

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EP1457646A1 EP1457646A1 (en) 2004-09-15
EP1457646B1 true EP1457646B1 (en) 2006-11-15

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DE102005029083B4 (en) 2005-06-23 2022-11-03 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Oil collection housing for an internal combustion engine
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DE102006032794A1 (en) * 2006-07-14 2008-01-17 Dr.Ing.H.C. F. Porsche Ag Oil catcher for an internal combustion engine
JP4546430B2 (en) * 2006-08-28 2010-09-15 本田技研工業株式会社 Engine oil return structure
JP4483910B2 (en) * 2007-08-29 2010-06-16 トヨタ自動車株式会社 Oil pan structure
DE102008022446B4 (en) 2008-04-30 2020-04-09 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Oil sump for an internal combustion engine
DE102008022445A1 (en) * 2008-04-30 2009-11-05 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Oil collector for internal combustion engine, has oil suction area formed by arrangement of stiffener wall provided with multiple openings and cover
DE102008040691A1 (en) * 2008-07-24 2010-02-25 Zf Friedrichshafen Ag Transmission oil space
DE102010009913A1 (en) * 2010-03-02 2011-09-08 Daimler Ag Internal combustion engine
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GB2550113B (en) * 2016-05-03 2019-07-24 Ford Global Tech Llc Crankcase oil catcher with an aperture and seal.
US10208637B2 (en) * 2016-09-26 2019-02-19 Solar Turbines Incorporated Sump tank for a gas turbine engine
CN107676147A (en) * 2017-08-10 2018-02-09 中国北方发动机研究所(天津) A kind of novel dry oil pan structure that can be used as sump
US11078958B1 (en) 2020-08-24 2021-08-03 Apq Development, Llc Compression limiter
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USD921045S1 (en) 2020-08-24 2021-06-01 Apq Development, Llc Oil pick-up assembly
USD916152S1 (en) 2020-08-24 2021-04-13 Apq Development, Llc Compression limiter

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DE10139709A1 (en) * 2001-08-11 2003-02-27 Porsche Ag Oil collecting device for an internal combustion engine, in particular for a boxer engine

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JP2004270697A (en) 2004-09-30
DE10310179A1 (en) 2004-09-23
US7124730B2 (en) 2006-10-24
US20040231924A1 (en) 2004-11-25
DE502004001977D1 (en) 2006-12-28
DE10310179B4 (en) 2008-12-24
EP1457646A1 (en) 2004-09-15

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