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EP1457646A1 - 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
EP1457646A1
EP1457646A1 EP04004754A EP04004754A EP1457646A1 EP 1457646 A1 EP1457646 A1 EP 1457646A1 EP 04004754 A EP04004754 A EP 04004754A EP 04004754 A EP04004754 A EP 04004754A EP 1457646 A1 EP1457646 A1 EP 1457646A1
Authority
EP
European Patent Office
Prior art keywords
oil
space
bulkhead
collecting device
oil collecting
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
EP04004754A
Other languages
German (de)
French (fr)
Other versions
EP1457646B1 (en
Inventor
Christian Schwarzl
Tobias Bäumler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dr Ing HCF Porsche AG
Original Assignee
Dr Ing HCF Porsche AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dr Ing HCF Porsche AG filed Critical Dr Ing HCF Porsche AG
Publication of EP1457646A1 publication Critical patent/EP1457646A1/en
Application granted granted Critical
Publication of EP1457646B1 publication Critical patent/EP1457646B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • 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.
  • the object of the invention is to improve the so-called.
  • Integrated dry sump To further improve functionality in order to achieve a high degree of integration at the same time includes a reduction in the scope of pre-assembly.
  • one is formed in the oil collecting space from a wall section Inclined provided that as a drainage surface for the returned to the oil collection space Lubricating oil is used.
  • This sloping side wall of the oil collection space supports the oil return from the cylinder heads to the extraction point in an advantageous manner.
  • the lubricating oil returned from the cylinder heads hits the oblique one running drainage surface and from there passes over the in the oil bulkhead provided openings in the oil extraction chamber.
  • running drainage surfaces can maintain the volume of the oil collecting space the functionality of the pressure lubrication can be reduced.
  • they serve Drain surfaces through the defined flow of the returning oil to Defoaming of the lubricating oil; they take over the function of otherwise Usually used oil / air separators, the so-called swirlpots.
  • the wall section provided with the lubricating oil drainage surface in the oil collecting space is open advantageous way in one piece from the oil collection housing down final oil cap formed. This can be for the drain surface provided plastic part are molded so that the previous one in the oil sump Dead spaces can be significantly reduced. So that the internal combustion mesh with a lower amount of lubricant in circulation, which means weight and Cost advantages can be claimed.
  • the sloping drainage surfaces which simultaneously defoam the lubricating oil are provided, can also be provided with ribs, knobs or similar shaped bodies be provided so that the lubricating oil on the way into the oil extraction chamber is degassed accordingly.
  • the two oil bulkheads delimiting the oil extraction space and in the oil collection space arranged oil return lines are in one piece as a kind of pre-assembly module summarized.
  • the integration of the components belonging to the dry sump is further increases when the oil suction snorkel located in the oil collection chamber with the two Oil return lines is combined in one piece as a common module.
  • the crankcase of a 6-cylinder boxer engine shown in section in FIG. 2 consists of two crankcase halves 2 without limitation to this embodiment 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 is one down extending wall sections 6 and 8 formed, which together with one at the Flange surfaces 10 and 12 of the two wall sections 6 and 8 fastened oil covers 14 form an oil collecting housing, hereinafter referred to as an oil pan.
  • the oil pan faces an oil suction chamber 16, in which a main oil pump, not shown leading oil suction snorkel 18 is arranged.
  • two oil collection spaces 20 and 22 are formed, which are opposite the oil extraction space 16 are separated by two oil bulkheads 24 and 26. Both oil bulkheads 24 and 26 are provided with three window-like openings 28, 29 and 30, respectively by means of a flow flap 32 and 34 acting as a check valve are monitored.
  • Flow flaps 32 and 34 are four for each flow flap 32, 34 Oil bulkheads 24, 26 provided holding pins 36 on which the Flow flap 32, 34 is mounted; preferably there are elastic ones Flow flaps 32, 34 made of rubber.
  • the oil suction snorkel 18 is at the same time on the connection plate 52 connected in one piece, the connecting flange 58 of the oil suction snorkel 18 on Crankcase 2 is screwed.
  • the two form Oil bulkheads 24, 26 and the two oil return lines 42, 44 together with the Oil suction snorkel 18 a one-piece plastic bulkhead module, which as prefabricated assembly unit is formed.
  • the oil cover 14 which is also made of plastic, has the side limitation of the two oil collection spaces 20 and 22 two integrally connected to the oil cover 14 Ramps 60 and 62 on in the assembled state of the engine in the two Intervene in oil collecting spaces 20 and 22.
  • the two ramps 60 and 62 each have one which delimits the oil collecting space 20 or 22 and is provided with a slope Wall section 64 and 66, which acts as an oil drainage surface for the oil collecting space 20, 22 returned lubricating oil, as will be explained in more detail later, serves.
  • two cylindrical sealing stubs 68 and 70 are also formed, which are in the assembled state in openings 72 and 74 provided in crankcase 2, 4 intervene sealingly.
  • a drain plug for the coolant can be provided.
  • the one made of plastic Existing oil cover 14 has a for sealing against the flange surfaces 10, 12 circumferential groove-shaped contour 76, in which an elastomer seal 77 is inserted.
  • 4 are still on the Outer contour of the oil cover 14 corresponding flange screwing points 78 developed. It engages in a cup-shaped recess 80 provided in the oil cap 14 the oil suction snorkel 18.
  • the oil is returned to the oil pan in the following way:
  • the lubricating oil extracted from the two cylinder heads of the engine is transferred to the two oil return channels 50 (oil return shown by the arrows in Fig. 1) and over the two oil return lines 42 and 44 into the two oil collection spaces 20 and 22 conveyed back.
  • the lubricating oil drains off on the wall sections 64, 66 the lubricating oil defoams and thus the gaseous components of the lubricating oil be separated.
  • the defoaming of the back-flowing lubricating oil can continue be improved if the drainage surfaces 64, 66 additionally with ribs, knobs o. ⁇ . Shaped bodies are provided.
  • FIG. 5 shows a second embodiment, which is compared to the first Embodiment only slightly modified and identical in functionality to first embodiment is formed.
  • the oil suction snorkel 18 is not attached in one piece to the bulkhead module, but instead running separately, arranged.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)

Abstract

An oil drip dish fits underneath a crankcase (2,4) to form an oil extraction area (OEA) (16), from which lubricating oil (LO) is fed to consumers via a main oil pump with an oil suction pipe. LO from the consumers returns via oil pipes (42,44) to oil collecting areas (OCA) (20,22) next to the OEA separated from the OCA by oil bulkhead walls (24,26) with a passage controlled by flaps (32,34).

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 911 series Carrera (Dr. Ing.h.c. F. Porsche AG) is in the oil guide housing or in the oil pan an oil bulkhead box attached to the oil pan cover is provided, in which the oil sump for the engine is supplied with lubricating oil. That from consumers to the Oil pan returned lubricating oil is first outside of the oil extraction space forming oil bulkhead is returned before passing through it in the oil bulkhead Flaps monitored openings in the actual oil extraction chamber.

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 improve the so-called. Integrated dry sump To further improve functionality in order to achieve a high degree of integration at the same time includes a reduction in the scope of pre-assembly.

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, one is formed in the oil collecting space from a wall section Inclined provided that as a drainage surface for the returned to the oil collection space Lubricating oil is used. This sloping side wall of the oil collection space supports the oil return from the cylinder heads to the extraction point in an advantageous manner. The lubricating oil returned from the cylinder heads, for example, hits the oblique one running drainage surface and from there passes over the in the oil bulkhead provided openings in the oil extraction chamber. Through the training at an angle running drainage surfaces can maintain the volume of the oil collecting space the functionality of the pressure lubrication can be reduced. At the same time they serve Drain surfaces through the defined flow of the returning oil to Defoaming of the lubricating oil; they take over the function of otherwise Usually used oil / air separators, the so-called swirlpots.

Weitere Vorteile und vorteilhafte Ausgestaltungen der Erfindung ergeben sich aus den Unteransprüchen und der Beschreibung.Further advantages and advantageous embodiments of the invention result from the Subclaims 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 Schmiermittel-Umlaufmenge betrieben werden, wodurch Gewichts- und Kostenvorteile geltend gemacht werden können.The wall section provided with the lubricating oil drainage surface in the oil collecting space is open advantageous way in one piece from the oil collection housing down final oil cap formed. This can be for the drain surface provided plastic part are molded so that the previous one in the oil sump Dead spaces can be significantly reduced. So that the internal combustion mesh with a lower amount of lubricant in circulation, which means 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 sloping drainage surfaces, which simultaneously defoam the lubricating oil are provided, can also be provided with ribs, knobs or similar shaped bodies be provided so that the lubricating oil on the way into the oil extraction chamber is degassed accordingly.

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 extraction space and in the oil collection space arranged oil return lines are in one piece as a kind of pre-assembly module summarized. The integration of the components belonging to the dry sump is further increases when the oil suction snorkel located in the oil collection chamber with the two Oil return lines is combined in one piece as a common module.

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

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 cap with a bulkhead module,
Fig. 4
an individual representation of the compartment module,
Fig. 5
the compartment 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 of two crankcase halves 2 without limitation to this embodiment 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 is one down extending wall sections 6 and 8 formed, which together with one at the Flange surfaces 10 and 12 of the two wall sections 6 and 8 fastened oil covers 14 form an oil collecting housing, hereinafter referred to as an oil pan. The oil pan faces an oil suction chamber 16, in which a main oil pump, not shown leading oil suction snorkel 18 is arranged. Left and right of the oil extraction room 16, two oil collection spaces 20 and 22 are formed, which are opposite the oil extraction space 16 are separated by two oil bulkheads 24 and 26. Both oil bulkheads 24 and 26 are provided with three window-like openings 28, 29 and 30, respectively by means of a flow flap 32 and 34 acting as a check valve are monitored. To attach the only opening in the oil extraction chamber 16 Flow flaps 32 and 34 are four for each flow flap 32, 34 Oil bulkheads 24, 26 provided holding pins 36 on which the Flow flap 32, 34 is mounted; preferably there are elastic ones Flow flaps 32, 34 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 Through openings 28 to 30 are each a further rectangular opening 38 and 40 is provided, to each of which an oil return line 42 that widens in a funnel shape or 44 is introduced. The other end of the two oil return lines 42, 44 is via a connector 46 and 48 to two in the crankcase halves 2 and 4 integrated return channels 50 connected. Both through the crankcase halves 2 and 4 formed oil return channels 50 are by a partition, not shown, the is arranged in the area between the two connecting pieces 46 and 48, separately. Both connecting pieces 46, 48 are connected to one another via a connecting plate 52; the latter is via two screw points 54 and 56 on the crankcase 2, 4 attached. The oil suction snorkel 18 is at the same time on the connection plate 52 connected in one piece, the connecting flange 58 of the oil suction snorkel 18 on Crankcase 2 is screwed. As shown in Fig. 4, the two form Oil bulkheads 24, 26 and the two oil return lines 42, 44 together with the Oil suction snorkel 18 a one-piece plastic bulkhead module, which as prefabricated assembly unit is formed.

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 oil cover 14, which is also made of plastic, has the side limitation of the two oil collection spaces 20 and 22 two integrally connected to the oil cover 14 Ramps 60 and 62 on in the assembled state of the engine in the two Intervene in oil collecting spaces 20 and 22. The two ramps 60 and 62 each have one which delimits the oil collecting space 20 or 22 and is provided with a slope Wall section 64 and 66, which acts as an oil drainage surface for the oil collecting space 20, 22 returned lubricating oil, as will be explained in more detail later, serves. From the oil cap 14, two cylindrical sealing stubs 68 and 70 are also formed, which are in the assembled state in openings 72 and 74 provided in crankcase 2, 4 intervene sealingly. This seals two coolant channels that connect to the Limit the oil sump of the crankcase. In addition, one of these seals a drain plug for the coolant can be provided. The one made of plastic Existing oil cover 14 has a for sealing against the flange surfaces 10, 12 circumferential groove-shaped contour 76, in which an elastomer seal 77 is inserted. For screwing the oil cover 14 to the crankcase 2, 4 are still on the Outer contour of the oil cover 14 corresponding flange screwing points 78 developed. It engages in a cup-shaped recess 80 provided in the oil cap 14 the oil suction snorkel 18.

Die Ölrückführung in die Ölwanne erfolgt auf folgende Art und Weise:The oil is returned to the oil pan 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 lubricating oil extracted from the two cylinder heads of the engine is transferred to the two oil return channels 50 (oil return shown by the arrows in Fig. 1) and over the two oil return lines 42 and 44 into the two oil collection spaces 20 and 22 conveyed back. This occurs when the lubricating oil escapes into the oil collecting spaces 20, 22 Lubricating oil on the two inclined wall sections 64, 66 of the two in Oil collecting space 20, 22 arranged ramps 60, 62, flows off at these and enters Dependence on the level of the oil level through the flaps 32, 34 monitored openings 28 to 30 in the oil extraction chamber 16. From there it gets up known way to consumers via the main oil pump, not shown fed again. When the lubricating oil drains off on the wall sections 64, 66 the lubricating oil defoams and thus the gaseous components of the lubricating oil be separated. The defoaming of the back-flowing lubricating oil can continue be improved if the drainage surfaces 64, 66 additionally with ribs, knobs o. Ä. Shaped bodies are provided.

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.5 shows a second embodiment, which is compared to the first Embodiment only slightly modified and identical in functionality to first embodiment is formed. In contrast to the first embodiment the oil suction snorkel 18 is not attached in one piece to the bulkhead module, but instead running separately, arranged.

Claims (7)

Ölauffangvorrichtung für eine Brennkraftmaschine, insbesondere für einen Boxermotor, mit einem unterhalb eines Kurbelgehäuses angeordneten Ölauffanggehäuse, in dem ein Ölabsaugraum (16) ausgebildet ist, aus dem das Schmieröl über eine mit einer Ölabsaugleitung versehene Hauptölpumpe zu den Verbrauchern gefördert wird, und dass an den Ölabsaugraum mindestens ein Ölsammelraum (20, 22) angrenzt, in dem das von den Verbrauchern kommende Schmieröl über eine Ölleitung zurückgeführt wird, wobei der Ölabsaugraum vom Ölsammelraum durch mindestens eine Ölschottwand (24, 26) getrennt ist, in der mindestens eine über eine Klappe (32, 34) kontrollierbare Durchtrittsöffnung (28 bis 30) angeordnet ist, über die das Schmieröl vom Ölsammelraum in den Ölabsaugraum übertreten kann, dadurch gekennzeichnet, dass ein den Ölsammelraum (20, 22) begrenzender und von der Ölschottwand (24, 26) beabstandeter Wandabschnitt (64, 66) vorgesehen ist, der bezogen auf die Durchtrittsöffnung (28 bis 30) in der Ölschottwand (24, 26) schräg abfallend verläuft und als Ablauffläche für das in den Ölsammelraum (20, 22) zurückgeführte Schmieröl dient.Oil collecting device for an internal combustion engine, in particular for a boxer engine, with an oil collecting housing arranged below a crankcase, in which an oil suction chamber (16) is formed, from which the lubricating oil is conveyed to the consumers via a main oil pump provided with an oil suction line, and to the oil suction chamber at least one oil collecting space (20, 22) adjoins, in which the lubricating oil coming from the consumers is returned via an oil line, the oil suction space being separated from the oil collecting space by at least one oil bulkhead wall (24, 26), in which at least one has a flap (32 , 34) controllable passage opening (28 to 30) through which the lubricating oil can pass from the oil collection space into the oil extraction space, characterized in that a wall section (20, 22) delimiting the oil collection space (20, 22) and spaced from the oil bulkhead wall (24, 26) 64, 66) is provided, which is based on the passage openings tion (28 to 30) in the oil bulkhead (24, 26) slopes downwards and serves as a drainage surface for the lubricating oil returned to the oil collecting space (20, 22). Ölauffangvorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass der Wandabschnitt (64, 66) Teil einer Rampe (60, 62) ist, die einstückig aus einem das Ölauffanggehäuse nach unten abschließenden Öldeckel (14) ausgebildet ist.Oil collecting device according to claim 1, characterized in that the wall section (64, 66) is part of a ramp (60, 62) which is formed in one piece from an oil cover (14) which closes the oil collecting housing at the bottom. Ölauffangvorrichtung nach Anspruch 2, dadurch gekennzeichnet, dass der Öldeckel (14) und die Rampe (60, 62) aus Kunststoff bestehen.Oil collecting device according to claim 2, characterized in that the oil cover (14) and the ramp (60, 62) consist of plastic. Ölauffangvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass jeweils links und rechts vom Ölabsaugraum (16) ein durch eine Ölschottwand (24, 26) abgetrennter Ölsammelraum (20, 22) vorgesehen ist. Oil collecting device according to one of the preceding claims, characterized in that an oil collecting space (20, 22) separated by an oil bulkhead (24, 26) is provided on the left and right of the oil suction space (16). Ölauffangvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass im Ölsammelraum (16) zwei Ölrücklaufleitungen (42, 44) angeordnet sind, die auf der einen Seite mit im Kurbelgehäuse (2, 4) integrierte Ölrücklaufkanälen (50) verbunden sind und auf der anderen Seite in jeweils mindestens eine in der Ölschottwand (24, 26) vorgesehene Öffnung (38, 40) einmünden.Oil collecting device according to one of the preceding claims, characterized in that two oil return lines (42, 44) are arranged in the oil collecting space (16), which are connected on one side to oil return channels (50) integrated in the crankcase (2, 4) and on the other Each side opens into at least one opening (38, 40) provided in the oil bulkhead wall (24, 26). Ölauffangvorrichtung nach Anspruch 5, dadurch gekennzeichnet, dass die beiden Ölschottwände (24, 26) sowie die beiden Ölrücklaufleitungen (42, 44) als Schottraummodul zusammengefasst sind.Oil collecting device according to claim 5, characterized in that the two oil bulkhead walls (24, 26) and the two oil return lines (42, 44) are combined as a bulkhead module. Ölauffangvorrichtung nach Anspruch 6, dadurch gekennzeichnet, dass ein Ölabsaugschnorchel (18) mit den beiden Ölrücklaufleitungen (42, 44) zusammengefasst ist.Oil collecting device according to claim 6, 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)

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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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CN107339165A (en) * 2016-05-03 2017-11-10 福特环球技术公司 Crankcase oil catcher with hole and seal
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

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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
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CN107339165B (en) * 2016-05-03 2021-02-09 福特环球技术公司 Crankcase sump having a bore and seal
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Also Published As

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EP1457646B1 (en) 2006-11-15
DE10310179A1 (en) 2004-09-23
US20040231924A1 (en) 2004-11-25
JP2004270697A (en) 2004-09-30
DE10310179B4 (en) 2008-12-24
DE502004001977D1 (en) 2006-12-28
US7124730B2 (en) 2006-10-24

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