EP0903474B1 - Device for encapsulating a countershaft of a combustion engine - Google Patents

Device for encapsulating a countershaft of a combustion engine Download PDF

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Publication number
EP0903474B1
EP0903474B1 EP98117181A EP98117181A EP0903474B1 EP 0903474 B1 EP0903474 B1 EP 0903474B1 EP 98117181 A EP98117181 A EP 98117181A EP 98117181 A EP98117181 A EP 98117181A EP 0903474 B1 EP0903474 B1 EP 0903474B1
Authority
EP
European Patent Office
Prior art keywords
oil
arrangement according
trough
crankcase
encapsulating device
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
EP98117181A
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German (de)
French (fr)
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EP0903474A1 (en
Inventor
Volker Cornelius
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.)
Volkswagen AG
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Volkswagen AG
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Filing date
Publication date
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Publication of EP0903474A1 publication Critical patent/EP0903474A1/en
Application granted granted Critical
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Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01MLUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M11/00Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
    • F01M11/0004Oilsumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B77/00Component parts, details or accessories, not otherwise provided for
    • F02B77/11Thermal or acoustic insulation
    • F02B77/13Acoustic insulation
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01MLUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00Pressure lubrication
    • F01M1/02Pressure lubrication using lubricating pumps
    • F01M2001/0253Pressure lubrication using lubricating pumps characterised by the pump driving means
    • F01M2001/0276Pressure lubrication using lubricating pumps characterised by the pump driving means driven by a balancer shaft
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01MLUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M11/00Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
    • F01M11/0004Oilsumps
    • F01M2011/0029Oilsumps with oil filters

Definitions

  • the invention relates to an arrangement for encapsulating a secondary shaft of a reciprocating piston internal combustion engine with a crankcase and one arranged on the crankcase Oil pan according to the preamble of claim 1.
  • the present invention has for its object an improved arrangement of to provide the above type, with the above disadvantages be overcome.
  • the secondary shaft supporting structure separate, trough-shaped capsule device with an open side, a housing and a tub rim running around the open side is provided, wherein the capsule device is designed and flanged to the support structure such that the capsule device encloses the counter shaft together with the bearing and against encapsulates the oil pan.
  • Fixing means are expediently on the capsule device on the crankcase side formed, for example, as mounting holes or as at least one clip closure and are particularly preferably formed around the tub rim.
  • the capsule device has in the tub floor an oil intake opening, which is arranged such that when the capsule device is mounted An intake port of an oil pump with this oil intake opening on the crankcase side connected is.
  • an uninterrupted oil supply to the oil pump is achieved in that the oil intake opening oil pan side has a snorkel, which in an oil sump in the Oil pan protrudes and preferably a snorkel connection on the oil pan side at the oil intake opening is arranged.
  • the support structure on the oil pan side one of an outer edge of the support structure spaced, circumferential web, with a contour of the tub edge Capsule device essentially follows this web, so that the capsule device is on this web can be flanged, can advantageously a large part of the in the crankcase circulating lubricating oil are directed past the capsule device and only one smaller, predetermined part of the lubricating oil penetrates into the secondary shaft to lubricate it Capsule device.
  • the capsule device in the trough bottom at least one oil drain opening has a defined oil-conducting connection between the oil pan in an advantageous manner and an interior of the capsule device created, whereby the interior the capsule device is connected to an oil circulation in the crankcase
  • the capsule device is advantageous integrally formed as an injection molded part.
  • FIGS 1 to 4 show parts of a crank mechanism of an internal combustion engine for explanation with a arranged under a crankcase on a support structure 3, as Balance shaft 20 trained auxiliary shaft.
  • the reciprocating piston internal combustion engine has a crankcase, not shown, with one therein rotating crankshaft 1. Lateral walls of the crankcase are over the crankshaft center 2 in the direction of an oil pan, not shown, into one Flange level E guided. At this flange level E includes in the direction of the oil pan connected to the walls of the crankcase, labeled 3 in total Component, which is referred to below as support structure 3. This is essentially plate-shaped and extends in the longitudinal direction L and transverse direction Q of Crankcase and separates through its connection to the opening area of the crankcase surrounding flange opposite the crank drive designated overall with 4 the oil pan essentially.
  • the surface of the support structure 3 facing the crank mechanism 4 is at least in the region of Crank cheeks 6 of the crank mechanism 4 in accordance with the rotation there Conrod violin structure formed.
  • the Support structure 3 On its surface 7 facing away from the crank mechanism 4 and facing the oil pan, the Support structure 3 formed in one piece and of the same material, each an undivided bearing 8 and 9 bearing blocks 10 and 11.
  • the support structure 3 is essentially rectangular, with longitudinal sides 12 and 13 mounting eyes 14 are arranged for performing screw connections.
  • the long side 12 is essentially covered in the illustration in FIG. 1. With the Screw connections, the support structure 3 is fixed in the flange plane E on the crankcase.
  • each end extends between the long sides 12 and 13 End faces 15 and 16.
  • One end face 15 is designed as an end wall 17 and takes including the bearing block 10 integrally.
  • auxiliary shaft In the assembled state of the support structure 3 according to Figures 2, 3 and 4 is in the bearings 8 and 9 rotatably held a total of 20 designated auxiliary shaft.
  • This is integral and provided in one piece with a leveling compound 21 and initially from the end face 16 inserted through the bearing 9 and then through the bearing 8.
  • stepped pin 22 of the auxiliary shaft 20th On one plugged in Condition of the bearing 8 penetrating, stepped pin 22 of the auxiliary shaft 20th is a drive wheel 23 designed as a chain wheel and then a further balancing mass 24 put on.
  • This arrangement ensures together with one at the On the inside of the end wall 17, the collar 26 of the secondary shaft 20 has an axial bearing, while the bearing 9 is designed as a floating bearing.
  • the floating mounting of the balancing mass 21 ensures that the space is optimally approached this balancing mass 21 to the support structure 3.
  • This has a section 7a appropriately shaped contour surfaces 27 to create a free passage.
  • Crossing stiffening ribs 30 are between the two bearing blocks 10 and 11 arranged, which intersect at intersection points 31.
  • the auxiliary shaft 20 is driven by an output gear 40 of the crankshaft 1. Together with the drive wheel 23, this driven wheel 40 defines a drive plane T for a chain 41. As best seen in Figures 2 and 3, the chain 41 drives with her Back to reverse the direction of rotation, the auxiliary shaft 20.
  • the chain 41 drives with her Back to reverse the direction of rotation, the auxiliary shaft 20.
  • Deflection wheels 42 are provided, one of these deflection wheels 42 in a bearing 43 End wall 17 is held rotatably.
  • Another deflection wheel 42 acts as a drive wheel for an oil pump, not shown, of the reciprocating internal combustion engine. This is for optimal Space utilization between the inside 25 of the end wall 17, the surface 7 and next to the auxiliary shaft 20, detachably arranged on the support structure 3.
  • Area 7 carries fastening points 44 for this purpose.
  • the support structure 3 has a channel system for lubricating oil. From the flange level E starting in the area of the bearing block 11 extends essentially transverse inflow channel 45, which extends to the bearing 9 there. In one shaft 46 protruding from surface 7 extends parallel to the auxiliary shaft 20 a supply channel 47 which intersects the inflow channel 45 and which feeds in the Lubricating oil to bearing 8 promotes. The shaft 46 receiving the supply channel 47 runs along a series of crossing points 31.
  • the surface 7 continues to bear a web 32 which is a capsule device according to the invention described below Drive shaft 20 adjacent.
  • This web 32 extends from the end wall 17 spaced and parallel to the long side 13 along the end face 16 and again after internally offset essentially parallel to the other long side 12.
  • window-like openings 33 between them and the web 32 arranged for the passage of lubricating oil of the crank mechanism 4 in the oil pan.
  • FIG. 5 to 9 show the aforementioned capsule device 49 according to the invention in one preferred embodiment.
  • This comprises a trough-like housing 50, which in a circumferential contour and in a peripheral tub rim which is only partially visible in FIG. 5 64 the contour of the web 32 of FIG. 4 is adapted such that it is on the web 32 can be flanged and the auxiliary shaft 20 encapsulates against an oil pan.
  • the capsule device 49 further includes, in the preferred embodiment shown, mounting eyes 52, Clip connector 54, a snorkel flange with cover 56, a snorkel 58 and one Oil intake opening 60.
  • FIG. 6 shows in detail the area of the oil suction opening 60 which, in addition to the snorkel flange with cover 56, also comprises a sieve 62.
  • the cover 56 with the snorkel 58 (not visible in FIG. 6) is arranged on the oil pan side, ie in the installed position below the capsule device 49.
  • a connecting piece 66 formed integrally with the housing 50 is provided on an opposite side facing the crankcase or the support structure 3 in an interior of the capsule device 49.
  • this connecting piece 66 interacts with an intake port 67 of the oil pump in such a way that the oil pump is connected to the snorkel 58 and pumps and delivers oil from an oil sump.
  • connection piece 66 and the oil pump or their suction piece 67 are arranged in such a way that this connection is established automatically by fitting the capsule device 49. Additional installation work for connecting the oil pump is therefore not necessary.
  • the intake port 67 acts as a centering for the housing 50.
  • the strainer 62 is first inserted into the oil intake opening 60 and the cover 56 is placed on it. In this assembly stage, the latter abuts an elevation 68 which runs around the oil intake opening 60 and is accordingly spaced apart from the strainer 62.
  • the cover 56 is friction-welded onto the elevation 68, as a result of which the elevation 68 partially melts and the lid 56 moves downward in FIG. 6 until it rests on the sieve 66.
  • FIG. 7 the snorkel 58 is shown in solid lines for a specific internal combustion engine, while a shortened snorkel 58 for a specific internal combustion engine is shown in dashed lines with a different stroke volume and / or a different installation position.
  • FIG. 10 shows a detailed illustration of a fastening eye 52 on the housing 50
  • Fastening the capsule device 49 is a screw on the oil pan side in the direction of arrow 70 53 performed by the mounting eye 52 and either on the crankcase side Crankcase or screwed to the attachment points 44 ( Figure 1) of the support structure 3.
  • An annular web 59 integrally formed with the housing 50 in a depression 61 is plastically pressed by contacting the screw head 53 a and makes one separate sealing ring unnecessary.
  • the screw torque is based on the crankcase or on the lead frame, but not on the housing 50. This means that no independent occurs Dissolve by creeping the housing material.
  • the clip connectors 54 shown in detail in FIGS. 11 and 12 can be used in addition to the Fastening eyes 52 or be provided instead.
  • the clip connector 54 includes a hook-shaped element 55, which is attached to the housing 50 via an elastic arm 57 is. When pushed onto the web 32, the hook-shaped element 55 engages around the Web 32, as shown in Figure 12, and thus secures the housing 50 in a predetermined Position below the crankcase. An inserted sealing cord 72 seals the housing 50 on a circumferential bearing surface on the web 32 against the interior of the surrounding oil pan.
  • the clip connections 54 have the advantage that they are the same can be removed again simply and quickly, as previously by "clipping on" the housing 50 were manufactured.
  • the capsule device 49 can also be closed again quickly and easily disassemble, for example for later maintenance or repair work.
  • Fig. 13 shows the lid 56 with sieve 62 in an enlarged view in a view from the Crankcase side.
  • the screen 62 is preferably tilted at a predetermined angle arranged to the oil pan or to the oil sump contained in it, so that the Pump oil pumped through sieve 62 along sieve 62 along an enlarged sieve area must overcome. In this way, the extracted oil is freed of air bubbles that build up on it separate the screen 62.
  • the capsule device 49 advantageously prevents the rotating ones from “splashing" Counter shaft 20 in the oil sump, which leads to an undesirable foaming of the oil and unnecessary loss of work.
  • the suction snorkel integrated in the capsule device 49 58 for the oil pump reduces the total number of parts when assembling the Internal combustion engine.
  • the capsule device 49 for example, only takes on the auxiliary shaft 20 oil extracted for their lubrication and the oil flowing out of the crank mechanism becomes of such an embodiment completely past the auxiliary shaft 20 into the oil pan directed.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)

Description

Die Erfindung betrifft eine Anordnung zum Einkapseln einer Nebenwelle einer Hubkolben-Brennkraftmaschine mit einem Kurbelgehäuse und einer am Kurbelgehäuse angeordneten Ölwanne gemäß dem Oberbegriff von Anspruch 1.The invention relates to an arrangement for encapsulating a secondary shaft of a reciprocating piston internal combustion engine with a crankcase and one arranged on the crankcase Oil pan according to the preamble of claim 1.

Eine derartige Anordnung ist aus der EP 0 634 566 B1 bekannt, die zum Führen von Öl in dem Kurbelgehäuse an der Nebenwelle vorbei zwischen einem Kurbeltrieb und der Ölwanne eine Schale aufweist, von der sich in Richtung Ölwanne Stege erstrecken, welche die Nebenwelle teilweise umschließen und mit der Schale zusammen ein Profil bilden, welches gegenüber dem Kurbeltrieb geschlossen ist. Durch Ausbilden der Stege derart, daß sie an Wandabschnitten der Brennkraftmaschine anliegen, wird eine Kapselung der Nebenwelle erzielt.Such an arrangement is known from EP 0 634 566 B1, which is used to guide oil in the crankcase past the auxiliary shaft between a crank mechanism and the oil pan has a shell, from which extend towards the oil pan webs, which the Partially enclose the auxiliary shaft and form a profile with the shell, which is closed to the crank mechanism. By forming the webs so that they are on If there are wall sections of the internal combustion engine, the secondary shaft is encapsulated achieved.

Diese Anordnung hat jedoch den Nachteil, daß sie einen komplizierten Aufbau und dementsprechend kostenintensiv in der Herstellung und Montage ist.However, this arrangement has the disadvantage that it is complicated in construction and accordingly is expensive to manufacture and assemble.

Aus der DE 42 04 522 C1 ist es ferner bekannt, zum Zwecke der Geräuschdämpfung in einer Brennkraftmaschine mit Kurbelgehäuse das Triebwerk zur Ölwanne hin mittels einer Schale abzudecken, welche wenigstens eine Öffnung zum Ableiten von Schmieröl aufweist, wobei die Öffnung in eine Dämpfungskammer mündet. Die Schale ist in ihrer Kontur derart ausgebildet, daß sie nahe entlang einer Pleuelgeige verläuft. Diese Schale ist jedoch oberhalb einer eventuell vorhandenen, als Ausgleichswelle ausgebildeten Nebenwelle vorgesehen, wobei die Nebenwelle selbst zur Ausbildung der Dämpfungskammer dient und daher immer notwendigerweise außerhalb der Schale angeordnet ist. From DE 42 04 522 C1 it is also known for the purpose of noise reduction in one Internal combustion engine with crankcase, the engine to the oil pan by means of a shell cover, which has at least one opening for discharging lubricating oil, wherein the opening opens into a damping chamber. The shape of the bowl is like this trained to run closely along a connecting rod violin. However, this bowl is above a possible existing auxiliary shaft designed as a balancer shaft, the auxiliary shaft itself serves to form the damping chamber and therefore is always located outside the shell.

Die US 5 535 643 beschreibt eine geteilte Lagerbrücke für eine Ausgleichswellenpaar. Ein unterer Teil der Lagerbrücke bildet gleichzeitig eine Kapselung für die Ausgleichswelten aus. Dies Anordnung ist jedoch bzgl. Herstellung der geteilten Lagerbrücke, wie auchbzgl. der Montage aufwendig, kostenintensiv und zeitintensiv.US 5,535,643 describes a split bearing bracket for a pair of balance shafts. On the lower part of the bearing bridge also forms an encapsulation for the compensation worlds. However, this arrangement is related to the manufacture of the split bearing bridge, as well as the Assembly complex, costly and time consuming.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, eine verbesserte Anordnung der obengenannten Art zur Verfügung zu stellen, wobei die oben genannten Nachteile überwunden werden.The present invention has for its object an improved arrangement of to provide the above type, with the above disadvantages be overcome.

Diese Aufgabe wird erfindungsgemäß durch eine Anordnung der o.g. Art mit den in Anspruch 1 gekennzeichneten Merkmalen gelöst. Vorteilhafte Ausgestaltungen der Erfindung sind in den abhängigen Ansprüchen angegeben.This object is achieved by an arrangement of the above. Kind with the claim 1 marked features solved. Advantageous embodiments of the invention are shown in the dependent claims.

Dazu ist es erfindungsgemäß vorgesehen, daß eine bzgl. der die Nebenwelle lagernd haltenden Stützstruktur separate, wannenförmige Kapselvorrichtung mit einer offenen Seite, einem Gehäuse und einen um die offene Seite umlaufenden Wannenrand vorgesehen ist, wobei die Kapselvorrichtung derart ausgebildet und an die Stützstruktur angeflanscht ist, daß die Kapselvorrichtung die Nebenwelle zusammen mit der Lagerung umschließt und gegen die Ölwanne abkapselt.For this purpose, it is provided according to the invention that one with respect to the secondary shaft supporting structure separate, trough-shaped capsule device with an open side, a housing and a tub rim running around the open side is provided, wherein the capsule device is designed and flanged to the support structure such that the capsule device encloses the counter shaft together with the bearing and against encapsulates the oil pan.

Dies hat den Vorteil, daß eine derartige Anordnung von unten, also ölwannenseitig, auf das Kurbelgehäuse oder einen daran angeordneten Leiterrahmen z. B. einfach aufsteckbar ist und daher unabhängig von der Form und Ausgestaltung des Innenraumes des Kurbelgehäuses universell ausgebildet werden kann, da die Kapseleinrichtung selbst und ohne Zuhilfenahme von Wandungen der Brennkraftmaschine, eine Kapselung gegen die Ölwanne ausbildet.This has the advantage that such an arrangement from below, ie on the oil pan side, on the Crankcase or a lead frame arranged thereon z. B. is simply attachable and therefore regardless of the shape and design of the interior of the crankcase can be designed universally, since the capsule device itself and without Using walls of the internal combustion engine, an encapsulation against the oil pan formed.

Zweckmäßigerweise sind an der Kapselvorrichtung kurbelgehäuseseitig Befestigungsmittel ausgebildet, die beispielsweise als Befestigungslöcher oder als wenigstens ein Clipverschluß und in besonders bevorzugter Weise um den Wannenrand herum ausgebildet sind.Fixing means are expediently on the capsule device on the crankcase side formed, for example, as mounting holes or as at least one clip closure and are particularly preferably formed around the tub rim.

In einer vorteilhaften Weiterbildung der Erfindung weist die Kapselvorrichtung im Wannenboden eine Ölansaugöffnung auf, welche derart angeordnet ist, daß bei montierter Kapselvorrichtung kurbelgehäuseseitig ein Ansaugstutzen einer Ölpumpe mit dieser Ölansaugöffnung verbunden ist. Dies hat den Vorteil, daß bei Montage der Kapselvorrichtung die Ölpumpe automatisch und ohne weiter Montagearbeiten angeschlossen ist. Dadurch wird ein herkömmlicher Saugschnorchel ersetzt.In an advantageous development of the invention, the capsule device has in the tub floor an oil intake opening, which is arranged such that when the capsule device is mounted An intake port of an oil pump with this oil intake opening on the crankcase side connected is. This has the advantage that when mounting the capsule device Oil pump is connected automatically and without further assembly work. This will make a conventional suction snorkel replaced.

Zum Abscheiden von Partikeln aus dem von der Ölpumpe über die Ölansaugöffnung angesaugten Schmieröl ist in vorteilhafter Weise die Ölansaugöffnung mit einem Sieb versehen. Durch diagonale Anordnung des Siebs steht eine besonders große Filterfläche zur Verfügung.For separating particles from the oil pump via the oil intake opening Sucked lubricating oil is advantageously the oil suction opening with a sieve Mistake. The diagonal arrangement of the sieve provides a particularly large filter area Available.

Eine unterbrechungsfreie Ölversorgung der Ölpumpe wird dadurch erzielt, daß die Ölansaugöffnung ölwannenseitig einen Schnorchel aufweist, welcher in einen Ölsumpf in der Ölwanne ragt und bevorzugt ölwannenseitig an der Ölansaugöffnung ein Schnorchelstutzen angeordnet ist.An uninterrupted oil supply to the oil pump is achieved in that the oil intake opening oil pan side has a snorkel, which in an oil sump in the Oil pan protrudes and preferably a snorkel connection on the oil pan side at the oil intake opening is arranged.

Dadurch, daß die Stützstruktur ölwannenseitig einen von einem äußeren Rand der Stützstruktur beabstandeten, umlaufend Steg aufweist, wobei eine Kontur des Wannenrandes der Kapselvorrichtung im wesentlichen diesem Steg folgt, so daß die Kapselvorrichtung an diesen Steg anflanschbar ist, kann in vorteilhafter Weise ein Großteil des im Kurbelgehäuse zirkulierenden Schmieröls an der Kapselvorrichtung vorbei geleitet werden und nur ein kleinerer, vorbestimmter Teil des Schmieröls dringt zum Schmieren der Nebenwelle in die Kapselvorrichtung ein.Characterized in that the support structure on the oil pan side one of an outer edge of the support structure spaced, circumferential web, with a contour of the tub edge Capsule device essentially follows this web, so that the capsule device is on this web can be flanged, can advantageously a large part of the in the crankcase circulating lubricating oil are directed past the capsule device and only one smaller, predetermined part of the lubricating oil penetrates into the secondary shaft to lubricate it Capsule device.

Eine einfach herzustellende und lösbare Befestigung der Kapselvorrichtung für eventuelle Wartungs- oder Reparaturarbeiten wird in vorteilhafter Weise dadurch erzielt, daß an der Kapselvorrichtung vorgesehene Befestigungsmittel auf diesen Steg aufschnappen.An easy to manufacture and detachable attachment of the capsule device for any Maintenance or repair work is advantageously achieved in that the Snap the capsule device provided fastening means onto this web.

Dadurch, daß die Kapselvorrichtung in dem Wannenboden wenigstens eine Ölablauföffnung aufweist, wird in vorteilhafter Weise eine definierte ölleitende Verbindung zwischen der Ölwanne und einem Innenraum der Kapselvorrichtung geschaffen, wodurch auch der Innenraum der Kapselvorrichtung an einer Ölzirkulation im Kurbelgehäuse angeschlossen istCharacterized in that the capsule device in the trough bottom at least one oil drain opening has a defined oil-conducting connection between the oil pan in an advantageous manner and an interior of the capsule device created, whereby the interior the capsule device is connected to an oil circulation in the crankcase

Aus Gründen einer einfachen Herstellung und Montage ist in vorteilhafter Weise die Kapselvorrichtung einstückig als Spritzgußteil ausgebildet. For reasons of simple manufacture and assembly, the capsule device is advantageous integrally formed as an injection molded part.

Weitere Merkmale, Vorteile und vorteilhafte Ausgestaltungen der Erfindung ergeben sich aus den abhängigen Ansprüchen, sowie aus der nachstehenden Beschreibung der Erfindung anhand der beigefügten Zeichnungen. Diese zeigen in

Fig. 1
eine perspektivische Ansicht von schräg unten auf eine Stützstruktur für ein Kurbelgehäuse zum Anbau einer Nebenwelle,
Fig. 2
eine perspektivische Ansicht einer in einer Hubkolben-Brennkraftmaschine verbauten Stützstruktur mit einem teilweise dargestellten Kurbeltrieb ohne Kurbelgehäuse,
Fig. 3
eine stirnseitige Seitenansicht zu Fig. 2,
Fig. 4
eine Seitenansicht zu Fig. 3,
Fig. 5
eine erfindungsgemäße Kapselvorrichtung in einer Ansicht von unten,
Fig. 6
einen Teil einer Schnittansicht entlang der Linie VI - VI von Fig. 5,
Fig. 7
einen Schnitt entlang der Linie VII - VII von Fig. 5,
Fig. 8
einen Schnitt entlang der Linie VIII - VIII von Fig. 5,
Fig. 9
eine Seitenansicht in Richtung S von Fig. 5,
Fig. 10
eine Detailansicht des Ausschnittes F von Fig. 7,
Fig. 11
eine Detailansicht des Ausschnittes E von Fig. 7,
Fig. 12
eine Detailansicht des Ausschnittes C von Fig. 8 und
Fig. 13
eine Aufsicht eines Schnorchelflansches mit Sieb.
Further features, advantages and advantageous embodiments of the invention result from the dependent claims and from the following description of the invention with reference to the accompanying drawings. These show in
Fig. 1
1 shows a perspective view obliquely from below of a support structure for a crankcase for mounting a secondary shaft,
Fig. 2
1 shows a perspective view of a support structure installed in a reciprocating piston internal combustion engine, with a crank mechanism shown in part without a crankcase,
Fig. 3
2 shows an end side view of FIG. 2,
Fig. 4
3 shows a side view of FIG. 3,
Fig. 5
a capsule device according to the invention in a view from below,
Fig. 6
FIG. 5 shows a part of a sectional view along the line VI-VI of FIG. 5,
Fig. 7
4 shows a section along the line VII-VII of FIG. 5,
Fig. 8
4 shows a section along the line VIII-VIII of FIG. 5,
Fig. 9
5 shows a side view in the direction S of FIG. 5,
Fig. 10
7 shows a detailed view of section F from FIG. 7,
Fig. 11
7 shows a detailed view of section E of FIG. 7,
Fig. 12
a detailed view of section C of Fig. 8 and
Fig. 13
a top view of a snorkel flange with sieve.

Die Figuren 1 bis 4 zeigen zur Erläuterung Teile eines Kurbeltriebes einer Brennkraftmaschine mit einer unter einem Kurbelgehäuse an einer Stützstruktur 3 angeordneten, als Ausgleichswelle 20 ausgebildeten Nebenwelle.Figures 1 to 4 show parts of a crank mechanism of an internal combustion engine for explanation with a arranged under a crankcase on a support structure 3, as Balance shaft 20 trained auxiliary shaft.

Die Hubkolben-Brennkraftmaschine weist ein nicht gezeigtes Kurbelgehäuse mit einer darin rotierend gelagerten Kurbelwelle 1 auf. Seitliche Wandungen des Kurbelgehäuses sind über die Kurbelwellenmitte 2 hinaus in Richtung auf eine nicht gezeigte Ölwanne bis in eine Flanschebene E geführt. An dieser Flanschebene E schließt in Richtung auf die Ölwanne ein an die Wandungen des Kurbelgehäuses angebundenes, insgesamt mit 3 bezeichnetes Bauteil an, welches nachfolgend als Stützstruktur 3 bezeichnet wird. Dieses ist im wesentlichen plattenartig ausgebildet und erstreckt sich in Längsrichtung L und Querrichtung Q des Kurbelgehäuses und trennt durch seine Anbindung an den den Öffnungsbereich des Kurbelgehäuses umgebenden Flansch den insgesamt mit 4 bezeichneten Kurbeltrieb gegenüber der Ölwanne im wesentlichen ab.The reciprocating piston internal combustion engine has a crankcase, not shown, with one therein rotating crankshaft 1. Lateral walls of the crankcase are over the crankshaft center 2 in the direction of an oil pan, not shown, into one Flange level E guided. At this flange level E includes in the direction of the oil pan connected to the walls of the crankcase, labeled 3 in total Component, which is referred to below as support structure 3. This is essentially plate-shaped and extends in the longitudinal direction L and transverse direction Q of Crankcase and separates through its connection to the opening area of the crankcase surrounding flange opposite the crank drive designated overall with 4 the oil pan essentially.

Die dem Kurbeltrieb 4 zugewandte Fläche der Stützstruktur 3 ist zumindest im Bereich von Kurbelwangen 6 des Kurbeltriebes 4 entsprechend der dort durch die Rotation entstehenden Pleuelgeigenstruktur ausgebildet.The surface of the support structure 3 facing the crank mechanism 4 is at least in the region of Crank cheeks 6 of the crank mechanism 4 in accordance with the rotation there Conrod violin structure formed.

Auf seiner vom Kurbeltrieb 4 abgewandten und der Ölwanne zugewandten Fläche 7 trägt die Stützstruktur 3 einstückig und materialeinheitlich ausgebildete, jeweils ein ungeteiltes Lager 8 und 9 aufweisende Lagerböcke 10 und 11.On its surface 7 facing away from the crank mechanism 4 and facing the oil pan, the Support structure 3 formed in one piece and of the same material, each an undivided bearing 8 and 9 bearing blocks 10 and 11.

Die Stützstruktur 3 ist im wesentlichen rechteckfömig ausgebildet, wobei an Längsseiten 12 und 13 Befestigungsaugen 14 zur Durchführung von Schraubverbindungen angeordnet sind. Die Längsseite 12 ist hierbei in der Darstellung von Fig. 1 im wesentlichen verdeckt. Mit den Schraubverbindungen ist die Stützstruktur 3 in der Flanschebene E am Kurbelgehäuse festgelegt.The support structure 3 is essentially rectangular, with longitudinal sides 12 and 13 mounting eyes 14 are arranged for performing screw connections. The long side 12 is essentially covered in the illustration in FIG. 1. With the Screw connections, the support structure 3 is fixed in the flange plane E on the crankcase.

In Längsrichtung L erstrecken sich zwischen den Längsseiten 12 und 13 endseitig jeweils Stirnseiten 15 und 16. Die eine Stirnseite 15 ist als Stirnwandung 17 ausgebildet und nimmt unter anderem integral den Lagerbock 10 auf.In the longitudinal direction L, each end extends between the long sides 12 and 13 End faces 15 and 16. One end face 15 is designed as an end wall 17 and takes including the bearing block 10 integrally.

Im bestückten Zustand der Stützstruktur 3 gemäß Figuren 2, 3 und 4 ist in den Lagern 8 und 9 eine insgesamt mit 20 bezeichnete Nebenwelle drehbar gehalten. Diese ist integral und einstückig mit einer Ausgleichsmasse 21 versehen und von der Stirnseite 16 aus zunächst durch das Lager 9 und anschließend durch das Lager 8 gesteckt. Auf einen im eingesteckten Zustand das Lager 8 durchsetzenden, abgesetzten Zapfen 22 der Nebenwelle 20 ist ein als Kettenrad ausgebildetes Antriebsrad 23 und anschließend eine weitere Ausgleichsmasse 24 aufgesetzt. Diese Anordnung gewährleistet gemeinsam mit einem an der Innenseite der Stimwandung 17 anliegenden Bund 26 der Nebenwelle 20 eine Axiallagerung, während das Lager 9 als Loslager ausgebildet ist.In the assembled state of the support structure 3 according to Figures 2, 3 and 4 is in the bearings 8 and 9 rotatably held a total of 20 designated auxiliary shaft. This is integral and provided in one piece with a leveling compound 21 and initially from the end face 16 inserted through the bearing 9 and then through the bearing 8. On one plugged in Condition of the bearing 8 penetrating, stepped pin 22 of the auxiliary shaft 20th is a drive wheel 23 designed as a chain wheel and then a further balancing mass 24 put on. This arrangement ensures together with one at the On the inside of the end wall 17, the collar 26 of the secondary shaft 20 has an axial bearing, while the bearing 9 is designed as a floating bearing.

Die fliegende Lagerung der Ausgleichsmasse 21 gewährleistet ein bauraumoptimales Heranrücken dieser Ausgleichsmasse 21 an die Stützstruktur 3. Diese weist in einem Abschnitt 7a entsprechend geformte Konturflächen 27 zur Schaffung eines Freiganges auf.The floating mounting of the balancing mass 21 ensures that the space is optimally approached this balancing mass 21 to the support structure 3. This has a section 7a appropriately shaped contour surfaces 27 to create a free passage.

Zwischen den beiden Lagerböcken 10 und 11 sind sich kreuzende Versteifungsrippen 30 angeordnet, welche sich in Kreuzungspunkten 31 schneiden.Crossing stiffening ribs 30 are between the two bearing blocks 10 and 11 arranged, which intersect at intersection points 31.

Der Antrieb der Nebenwelle 20 erfolgt von einem Abtriebsrad 40 der Kurbelwelle 1 aus. Dieses Abtriebsrad 40 definiert gemeinsam mit dem Antriebsrad 23 eine Triebebene T für eine Kette 41. Wie am besten aus Figuren 2 und 3 ersichtlich, treibt die Kette 41 mit ihrer Rückseite zur Drehrichtungsumkehr die Nebenwelle 20 an. Zu diesem Zwecke sind zwei Umlenkräder 42 vorgesehen, wobei eines dieser Umlenkräder 42 in einer Lagerung 43 der Stimwandung 17 drehbar gehalten ist. Ein weiteres Umlenkrad 42 wirkt als Antriebsrad für eine nicht gezeigte Ölpumpe der Hubkolben-Brennkraftmaschine. Diese ist zur optimalen Bauraumausnutzung zwischen der Innenseite 25 der Stirnwandung 17, der Fläche 7 und neben der Nebenwelle 20 liegend lösbar an der Stützstruktur 3 angeordnet. Die Fläche 7 trägt zu diesem Zwecke Befestigungspunkte 44. The auxiliary shaft 20 is driven by an output gear 40 of the crankshaft 1. Together with the drive wheel 23, this driven wheel 40 defines a drive plane T for a chain 41. As best seen in Figures 2 and 3, the chain 41 drives with her Back to reverse the direction of rotation, the auxiliary shaft 20. For this purpose there are two Deflection wheels 42 are provided, one of these deflection wheels 42 in a bearing 43 End wall 17 is held rotatably. Another deflection wheel 42 acts as a drive wheel for an oil pump, not shown, of the reciprocating internal combustion engine. This is for optimal Space utilization between the inside 25 of the end wall 17, the surface 7 and next to the auxiliary shaft 20, detachably arranged on the support structure 3. Area 7 carries fastening points 44 for this purpose.

Zur Versorgung der Lager 8 und 9 mit Schmieröl und zur Vermeidung von externen Zuleitungen, weist die Stützstruktur 3 ein Kanalsystem für Schmieröl auf. Von der Flanschebene E ausgehend erstreckt sich im Bereich des Lagerbockes 11 ein im wesentlichen querlaufender Zuströmkanal 45, welcher sich bis zum dortigen Lager 9 erstreckt. In einem von der Fläche 7 abragend ausgebildeten Schacht 46 erstreckt sich parallel zur Nebenwelle 20 ein den Zuströmkanal 45 schneidender Versorgungskanal 47, der das eingespeiste Schmieröl zum Lager 8 fördert. Der den Versorgungskanal 47 aufnehmende Schacht 46 verläuft entlang einer Reihe von Kreuzungspunkten 31.To supply bearings 8 and 9 with lubricating oil and to avoid external supply lines, the support structure 3 has a channel system for lubricating oil. From the flange level E starting in the area of the bearing block 11 extends essentially transverse inflow channel 45, which extends to the bearing 9 there. In one shaft 46 protruding from surface 7 extends parallel to the auxiliary shaft 20 a supply channel 47 which intersects the inflow channel 45 and which feeds in the Lubricating oil to bearing 8 promotes. The shaft 46 receiving the supply channel 47 runs along a series of crossing points 31.

Wie am besten aus Figur 1 ersichtlich, trägt die Fläche 7 weiterhin einen Steg 32, an welchem eine im nachfolgenden beschriebene erfindungsgemäße Kapselvorrichtung der Antriebswelle 20 angrenzt. Dieser Steg 32 erstreckt sich von der Stirnwand 17 ausgehend beabstandet und parallel zur Längsseite 13 entlang der Stirnseite 16 und wiederum nach innen versetzt im wesentlichen parallel zur anderen Längsseite 12. Im Bereich dieser Längsseiten 12 und 13 sind zwischen diesen und dem Steg 32 fensterartige Öffnungen 33 für den Durchtritt von Schmieröl des Kurbeltriebes 4 in die Ölwanne angeordnet.As can best be seen from FIG. 1, the surface 7 continues to bear a web 32 which is a capsule device according to the invention described below Drive shaft 20 adjacent. This web 32 extends from the end wall 17 spaced and parallel to the long side 13 along the end face 16 and again after internally offset essentially parallel to the other long side 12. In the area of this Longitudinal sides 12 and 13 are window-like openings 33 between them and the web 32 arranged for the passage of lubricating oil of the crank mechanism 4 in the oil pan.

Figur 5 bis 9 zeigen die vorerwähnte erfindungsgemäße Kapselvorrichtung 49 in einer bevorzugten Ausführungsform. Diese umfaßt ein wannenartiges Gehäuse 50, welches in einer Umfangskontur und in einem in Figur 5 nur teilweise sichtbaren umlaufenden Wannenrand 64 der Kontur des Steges 32 von Figur 4 derart angepaßt ist, daß es am Steg 32 anflanschbar ist und die Nebenwelle 20 gegen eine Ölwanne kapselt. Die Kapselvorrichtung 49 umfaßt ferner in der dargestellten bevorzugten Ausführungsform Befestigungsaugen 52, Clipverbinder 54, einen Schnorchelflansch mit Deckel 56, einen Schnorchel 58 und eine Ölansaugöffnung 60.5 to 9 show the aforementioned capsule device 49 according to the invention in one preferred embodiment. This comprises a trough-like housing 50, which in a circumferential contour and in a peripheral tub rim which is only partially visible in FIG. 5 64 the contour of the web 32 of FIG. 4 is adapted such that it is on the web 32 can be flanged and the auxiliary shaft 20 encapsulates against an oil pan. The capsule device 49 further includes, in the preferred embodiment shown, mounting eyes 52, Clip connector 54, a snorkel flange with cover 56, a snorkel 58 and one Oil intake opening 60.

Figur 6 zeigt detailliert den Bereich der Ölansaugöffnung 60, welcher neben dem Schnorchelflansch mit Deckel 56 zusätzlich ein Sieb 62 umfaßt. Der Deckel 56 mit dem in Figur 6 nicht sichtbaren Schnorchel 58 ist ölwannenseitig, d. h. in Einbaulage unterhalb der Kapselvorrichtung 49 angeordnet. An einer gegenüberliegenden, dem Kurbelgehäuse bzw. der Stützstruktur 3 zugewandten Seite in einem Innenraum der Kapselvorrichtung 49 ist ein einstückig mit dem Gehäuse 50 ausgebildeter Anschlußstutzen 66 vorgesehen. Bei der Montage der Kapselvorrichtung 49 an der Stützstruktur 3 wirkt dieser Anschlußstutzen 66 mit einem Ansaugstutzen 67 der Ölpumpe derart zusammen, daß die Ölpumpe mit dem Schnorchel 58 verbunden ist und aus einem Ölsumpf Öl pumpt und fördert. Der Anschlußstutzen 66 und die Ölpumpe bzw. deren Ansaugstutzen 67 sind derart angeordnet, daß diese Verbindung automatisch durch Aufsetzten der Kapselvorrichtung 49 hergestellt wird. Zusätzliche Montagearbeiten zum Anschluß der Ölpumpe entfallen demnach. Zugleich wirkt der Ansaugstutzen 67 als Zentrierung für das Gehäuse 50. Bei der Montage wird zunächst das Sieb 62 in die Ölansaugöffnung 60 ein- und der Deckel 56 aufgelegt. Letzterer stößt in diesem Montagestadium an eine um die Ölansaugöffnung 60 umlaufende Erhebung 68 an und ist dementsprechend vom Sieb 62 beabstandet. In einem nachfolgenden Bearbeitungsschritt wird der Deckel 56 auf die Erhebung 68 reibgeschweißt, wodurch die Erhebung 68 teilweise schmilzt und der Deckel 56 in Figur 6 nach unten wandert, bis er auf dem Sieb 66 aufliegt. Weiteres Reibschweißen verbindet nunmehr den Deckel 56 mit dem Sieb 66 und dem Gehäuse 50 am Umfang des Siebes 66 innerhalb der Erhebung 68. Dieses zweistufige Reibschweißen gewährleistet eine sichere, feste und dichte Verbindung im Bereich der Ölansaugöffnung 60.
In Figur 7 ist der Schnorchel 58 in ausgezogenen Linien für eine bestimmte Brennkraftmaschine gezeigt, während ein verkürzter Schnorchel 58 für eine bestimmte Brenkraftmaschine mit einem anderen Hubvolumen und/oder einer anderen Einbaulage gestrichelt dargestellt ist.
FIG. 6 shows in detail the area of the oil suction opening 60 which, in addition to the snorkel flange with cover 56, also comprises a sieve 62. The cover 56 with the snorkel 58 (not visible in FIG. 6) is arranged on the oil pan side, ie in the installed position below the capsule device 49. On an opposite side facing the crankcase or the support structure 3 in an interior of the capsule device 49, a connecting piece 66 formed integrally with the housing 50 is provided. When the capsule device 49 is mounted on the support structure 3, this connecting piece 66 interacts with an intake port 67 of the oil pump in such a way that the oil pump is connected to the snorkel 58 and pumps and delivers oil from an oil sump. The connection piece 66 and the oil pump or their suction piece 67 are arranged in such a way that this connection is established automatically by fitting the capsule device 49. Additional installation work for connecting the oil pump is therefore not necessary. At the same time, the intake port 67 acts as a centering for the housing 50. During assembly, the strainer 62 is first inserted into the oil intake opening 60 and the cover 56 is placed on it. In this assembly stage, the latter abuts an elevation 68 which runs around the oil intake opening 60 and is accordingly spaced apart from the strainer 62. In a subsequent processing step, the cover 56 is friction-welded onto the elevation 68, as a result of which the elevation 68 partially melts and the lid 56 moves downward in FIG. 6 until it rests on the sieve 66. Further friction welding now connects the cover 56 to the strainer 66 and the housing 50 on the circumference of the strainer 66 within the elevation 68. This two-stage friction welding ensures a secure, firm and tight connection in the area of the oil suction opening 60.
In FIG. 7, the snorkel 58 is shown in solid lines for a specific internal combustion engine, while a shortened snorkel 58 for a specific internal combustion engine is shown in dashed lines with a different stroke volume and / or a different installation position.

Figur 10 zeigt eine Detaildarstellung eines Befestigungsauges 52 am Gehäuse 50. Zum Befestigen der Kapselvorrichtung 49 wird ölwannenseitig in Pfeilrichtung 70 eine Schraube 53 durch das Befestigungsauge 52 durchgeführt und kurbelgehäuseseitig entweder am Kurbelgehäuse oder an den Befestigungspunkten 44 (Figur 1) der Stützstruktur 3 festgeschraubt. Ein integral mit dem Gehäuse 50 ausgebildeter Ringsteg 59 in einer Einsenkung 61 wird durch Anlage des Schraubenkopfes 53 a plastisch verpreßt und macht einen separaten Dichtring überflüssig. Das Schraubendrehmoment stützt sich am Kurbelgehäuse oder am Leiterrahmen ab, nicht jedoch am Gehäuse 50. Dadurch tritt kein selbständiges Lösen durch Kriechen des Gehäusewerkstoffes auf.FIG. 10 shows a detailed illustration of a fastening eye 52 on the housing 50 Fastening the capsule device 49 is a screw on the oil pan side in the direction of arrow 70 53 performed by the mounting eye 52 and either on the crankcase side Crankcase or screwed to the attachment points 44 (Figure 1) of the support structure 3. An annular web 59 integrally formed with the housing 50 in a depression 61 is plastically pressed by contacting the screw head 53 a and makes one separate sealing ring unnecessary. The screw torque is based on the crankcase or on the lead frame, but not on the housing 50. This means that no independent occurs Dissolve by creeping the housing material.

Die in Figuren 11 und 12 im Detail dargestellten Clipverbinder 54 könne zusätzlich zu den Befestigungsaugen 52 oder statt diesen vorgesehen sein. Der Clipverbinder 54 umfaßt ein hakenförmiges Element 55, welches über einen elastischen Arm 57 am Gehäuse 50 befestigt ist. Beim Aufschieben auf den Steg 32 umgreift das hakenförmige Element 55 den Steg 32, wie in Figur 12 dargestellt, und befestigt so das Gehäuse 50 in einer vorbestimmten Position unterhalb des Kurbelgehäuses. Eine eingelegte Dichtschnur 72 dichtet das Gehäuse 50 an einer umlaufenden Auflagefläche auf dem Steg 32 gegen den Innenraum der umgebenden Ölwanne ab. Die Clipverbindungen 54 haben den Vorteil, daß sie genauso einfach und schnell wieder zu lösen sind, wie sie vorher durch "aufclipsen" des Gehäuses 50 hergestellt wurden. So ist die Kapselvorrichtung 49 auch einfach und schnell wieder zu demontieren, beispielsweise für spätere Wartungs- oder Reparaturarbeiten.The clip connectors 54 shown in detail in FIGS. 11 and 12 can be used in addition to the Fastening eyes 52 or be provided instead. The clip connector 54 includes a hook-shaped element 55, which is attached to the housing 50 via an elastic arm 57 is. When pushed onto the web 32, the hook-shaped element 55 engages around the Web 32, as shown in Figure 12, and thus secures the housing 50 in a predetermined Position below the crankcase. An inserted sealing cord 72 seals the housing 50 on a circumferential bearing surface on the web 32 against the interior of the surrounding oil pan. The clip connections 54 have the advantage that they are the same can be removed again simply and quickly, as previously by "clipping on" the housing 50 were manufactured. The capsule device 49 can also be closed again quickly and easily disassemble, for example for later maintenance or repair work.

Fig. 13 zeigt den Deckel 56 mit Sieb 62 in vergrößerter Darstellung in einer Ansicht von der Kurbelgehäuseseite her. Das Sieb 62 ist bevorzugt in einem vorbestimmten Winkel verkippt zur Ölwanne bzw. zum in dieser enthaltenen Ölsumpf angeordnet, so daß das von der Pumpe über das Sieb 62 geförderte Öl am Sieb 62 entlang eine vergrößerte Siebfläche überwinden muß. Auf diese Weise wird das geförderte Öl von Luftblasen befreit, die sich auf dem Sieb 62 abscheiden.Fig. 13 shows the lid 56 with sieve 62 in an enlarged view in a view from the Crankcase side. The screen 62 is preferably tilted at a predetermined angle arranged to the oil pan or to the oil sump contained in it, so that the Pump oil pumped through sieve 62 along sieve 62 along an enlarged sieve area must overcome. In this way, the extracted oil is freed of air bubbles that build up on it separate the screen 62.

Die Kapselvorrichtung 49 verhindert in vorteilhafter Weise ein "panschen" der sich drehenden Nebenwelle 20 im Ölsumpf, was zu einem unerwünschten Aufschäumen des Öls und unnötiger Verlustarbeit führen würde. Der in die Kapselvorrichtung 49 integrierte Saugschnorchel 58 für die Ölpumpe reduziert die Gesamtzahl der Teile bei der Montage der Brennkraftmaschine. Die Kapselvorrichtung 49 nimmt beispielsweise nur zur Nebenwelle 20 zu ihrer Schmierung gefördertes Öl auf und das vom Kurbeltrieb abströmende Öl wird bei einer derartigen Ausführungsform vollständig an der Nebenwelle 20 vorbei in die Ölwanne geleitet.The capsule device 49 advantageously prevents the rotating ones from "splashing" Counter shaft 20 in the oil sump, which leads to an undesirable foaming of the oil and unnecessary loss of work. The suction snorkel integrated in the capsule device 49 58 for the oil pump reduces the total number of parts when assembling the Internal combustion engine. The capsule device 49, for example, only takes on the auxiliary shaft 20 oil extracted for their lubrication and the oil flowing out of the crank mechanism becomes of such an embodiment completely past the auxiliary shaft 20 into the oil pan directed.

Claims (14)

  1. Arrangement for encapsulating a secondary shaft of a reciprocating internal combustion engine, having a crankcase and an oil trough arranged on the crankcase, the secondary shaft being mounted in corresponding bearings (8, 9) in a supporting structure (3) which is fastened on the crankcase, characterized in that a trough-shaped encapsulating device (49) without a bearing function for the secondary shaft, which device is separate from the supporting structure (3) which holds the secondary shaft in bearings, is provided with an open side, a housing (50) and a trough edge (64) encircling the open side, the encapsulating device (49) being designed and flanged onto the supporting structure (3) in such a manner that the encapsulating device (49) encloses the secondary shaft together with the bearing arrangement (8, 9) and seals it off with respect to the oil trough.
  2. Arrangement according to Claim 1, characterized in that fastening means (52, 54) are formed on the encapsulating device (49), on the crankcase side.
  3. Arrangement according to Claim 2, characterized in that fastening means are fastening eyes (52) through which screws (53) can be inserted and can be screwed tight on the crankcase side.
  4. Arrangement according to Claim 2, characterized in that the fastening means comprise at least one clip fastener (54).
  5. Arrangement according to one of Claims 2 to 4, characterized in that the fastening means (52, 54) are formed on the trough edge (64).
  6. Arrangement according to one of the preceding claims, characterized in that the encapsulating device (49) has an oil suction opening (60) on the housing (50), the said opening being arranged in such a manner that, when the encapsulating device (49) is fitted, a suction connection of an oil pump is connected on the crankcase side to this oil suction opening (60).
  7. Arrangement according to Claim 6, characterized in that the oil suction opening (60) is provided with a sieve (62).
  8. Arrangement according to Claim 6 or 7, characterized in that the oil suction opening (60) has, on the oil trough side, a snorkel (58) which protrudes into an oil sump in the oil trough.
  9. Arrangement according to Claim 7, characterized in that in the installation position the sieve (62) is arranged obliquely with respect to the oil flow path.
  10. Arrangement according to one of Claims 6 to 9, characterized in that a snorkel connection having a cover (56) is arranged on the oil trough side of the oil suction opening (60).
  11. Arrangement according to at least one of the preceding claims, characterized in that the supporting structure (3) has, on the oil trough side, an encircling web (32) which is spaced apart from an outer edge of the supporting structure, a contour of the trough edge (64) of the encapsulating device (49) essentially following this web (32), with the result that the encapsulating device (49) can be flanged onto this web (32).
  12. Arrangement according to Claim 11, characterized in that fastening means (54) provided on the encapsulating device (49) snap onto this web (32).
  13. Arrangement according to one of the preceding claims, characterized in that the encapsulating device (49) has at least one oil outlet opening in the housing (50).
  14. Arrangement according to one of the preceding claims, characterized in that the encapsulating device (49) is of integral design as an injection-moulded part.
EP98117181A 1997-09-19 1998-09-10 Device for encapsulating a countershaft of a combustion engine Expired - Lifetime EP0903474B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19741448A DE19741448A1 (en) 1997-09-19 1997-09-19 Arrangement for encapsulating a secondary shaft of a reciprocating piston internal combustion engine
DE19741448 1997-09-19

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EP0903474A1 EP0903474A1 (en) 1999-03-24
EP0903474B1 true EP0903474B1 (en) 2002-07-10

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Publication number Priority date Publication date Assignee Title
DE10329762A1 (en) * 2003-07-02 2005-01-27 Mtu Friedrichshafen Gmbh Cover plate for a crankcase
CN110259885A (en) * 2019-06-26 2019-09-20 浙江吉利控股集团有限公司 A kind of balance system of engine for vehicle

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3321751A1 (en) * 1983-06-16 1984-12-20 Dr.Ing.H.C. F. Porsche Ag, 7000 Stuttgart COMBUSTION ENGINE FOR VEHICLES, ESP. FOR MOTORCYCLES
US4677948A (en) * 1986-05-29 1987-07-07 Chrysler Motors Corporation Lubricating system for an engine balancing device
CA1328588C (en) * 1987-05-15 1994-04-19 Honda Giken Kogyo Kabushiki Kaisha (Also Trading As Honda Motor Co., Ltd .) Internal combustion engine
JPH0211418A (en) * 1988-06-29 1990-01-16 Honda Motor Co Ltd Drive device for vehicle
DE4204522C1 (en) 1992-02-15 1993-04-15 Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De IC engine silencer with lower cover shell - has oil flow shell aperture opening into noise damping chamber
DE4323220C1 (en) 1993-07-12 1994-09-22 Porsche Ag Device for carrying lubricating oil in an internal combustion engine
US5535643A (en) * 1993-11-12 1996-07-16 General Motors Corporation Anti-rattle engine balancer which drives associated oil pump
US5479886A (en) * 1995-05-12 1996-01-02 Cummins Engine Engine oil capacitor
DE19620233A1 (en) * 1996-05-20 1997-11-27 Audi Ag Device for balancing mass moments on reciprocating piston internal combustion engines

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DE19741448A1 (en) 1999-03-25
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