EP2514934B1 - Réservoir de lubrifiant pour moteur à combustion interne - Google Patents

Réservoir de lubrifiant pour moteur à combustion interne Download PDF

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Publication number
EP2514934B1
EP2514934B1 EP20120159571 EP12159571A EP2514934B1 EP 2514934 B1 EP2514934 B1 EP 2514934B1 EP 20120159571 EP20120159571 EP 20120159571 EP 12159571 A EP12159571 A EP 12159571A EP 2514934 B1 EP2514934 B1 EP 2514934B1
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EP
European Patent Office
Prior art keywords
lubricant
lubricant sump
radius
walls
casting
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.)
Active
Application number
EP20120159571
Other languages
German (de)
English (en)
Other versions
EP2514934A1 (fr
Inventor
Alfred Sadlauer
Gerald Goekler
Christian Schroecker
Martin Wieländer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke AG
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Publication date
Application filed by Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Publication of EP2514934A1 publication Critical patent/EP2514934A1/fr
Application granted granted Critical
Publication of EP2514934B1 publication Critical patent/EP2514934B1/fr
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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
    • F01M2011/002—Oilsumps with means for improving the stiffness

Definitions

  • the invention relates to a lubricant pan for an internal combustion engine with the features of the preamble of patent claim 1.
  • Drur kgussschmierstoffwannen usually have consistent wall thicknesses. For example, stiffness and acoustic requirements are met with additional ribbing.
  • An example of this measure is from the German patent specification DE 40 14 788 C1 known.
  • ribs mean extra weight and a restriction on the oil flow direction with respect to engine leaning. Each rib also means additional, expensive tooling and often requires additional cooling channels in the tool.
  • a disadvantage of this known embodiment is a very complex production of the lubricant pan.
  • German patent application DE 40 09 688 A1 a final part or shielding for motor housing of internal combustion engines, such as oil pans, known, which has at least one of the sound emission of the motor housing significantly involved wall area, which is characterized in that this wall area is flat or slightly curved and at least partially limited by a narrow zone in that the stiffness of the wall material with respect to the rigidity of the wall material outside this zone is reduced by at least 30%, preferably by more than 50%, which leads to a shift of the first self-resonance of the wall area to lower frequencies.
  • a disadvantage of this configuration is a complicated demolding of the lubricant pan after an injection molding or casting process.
  • This known prior art is characterized by a relatively complex production of the lubricant pan.
  • the present invention seeks to identify a lubricant pan, which is easy to manufacture and meets the acoustic requirements while maintaining rigidity.
  • the size ranges according to claims 2 to 5 are particularly preferred size ranges for a lubricant trough according to the invention.
  • An embodiment according to claim 6 advantageously reduces the sound radiation of the side walls, whereby the acoustics is further improved.
  • the lubricant pan is particularly preferably a casting and manufactured with one of the methods according to claim 8.
  • Fig. 1 shows a plan view of a three-dimensional illustrated cut lubricant cup according to the invention 1.
  • a sectional surface of the lubricant pan 1 is shown hatched.
  • the bowl-shaped lubricant pan 1 is shown in the installed position and a numbered with U arrow shows geodetic down.
  • the lubricant pan 1 is provided for an internal combustion engine, not shown, and has a mounting flange 2 for fastening the lubricant pan 1 to a likewise not shown crankcase of the internal combustion engine.
  • At the mounting flange 2 close in the direction of geodetic down side walls 3 at. These lateral walls 3 go geodetically down over a radius in a bottom 4 of Schmiennittelwanne1 1 over.
  • the lubricant-tight bowl shape of the lubricant pan 1 is formed by the side walls 3 and the bottom 4, the mounting flange 2 is for mounting on the internal combustion engine and the rigidity.
  • a floor thickness d decreases from a geometric floor center 5 (shown in FIG Fig. 2 ) in the direction of the walls 3 to continuously, wherein an inner radius R i at the transition from the bottom 4 to the walls 3 is greater than a corresponding outer radius R a .
  • the area of the geometric center of the ground 5 is shown as a crossing point
  • the center of the floor 5 can be up to 30% of the total floor area in terms of area in which the punctiform geometric floor center 5 lies.
  • the bottom thickness d in the region of the bottom center 5 has a wall thickness of at least 2 mm and at the transition to the radius 3 has a wall thickness of not more than 10 mm.
  • the radius of the transition from the bottom 4 to the walls 3 preferably has an outer radius R a of at least 3 mm and the corresponding inner radius R i of this has preferably the double outer radius R a and at least 6 mm.
  • the walls 3 have a geometry corresponding to the bottom 4. This means that an in Fig. 1 constant ground thickness d continuously increases from a geometric wall center in the direction of the bottom 4 or the mounting flange 2 or a connecting the wall 3, wherein an inner radius R i at the transition from the walls to the bottom 4 and at the transition to the mounting flange 2 is greater than a corresponding outer radius R a .
  • the lubricant trough 1 is preferably a cast part, wherein the lubricant trough 1 can be produced as a die cast part or a sand casting or an injection molded part. _
  • Fig. 2 shows a plan view of an underside of a three-dimensionally illustrated inventive lubricant pan 1.
  • the base 4 starting from the region of its geometric center 5 an increasing wall thickness in the direction of the walls 3, which is marked by individual rings shown by dashed lines.
  • a ground thickness d belonging to a ring is in each case by way of example applied, starting at 2.3 mm for the geometric center 5 of the base 4, up to a thickness of 4.1 mm in the area of the outer radius R a ,
  • a U-numbered arrow in turn marks the direction of geodesic below.
  • the wall thickness of the bottom 4 changes starting from the production-related, supplier-specific minimum wall thickness of 2.3 mm, even 2 mm are still displayed in the antinode (bottom center), towards the corners continuously to 3 to 3.5 mm.
  • the range of the radius itself is, as shown in the table, about 4.1 mm.
  • the same design can also be applied to the walls 3, but is in Fig. 2 not shown.
  • the Eckenausrundungen have the inversion for this version, in the vertex, the wall thickness is greater (inner radius R i is about twice as large as the outer radius R a ).
  • the inventive design of the lubricant pan 1 brings a significant weight advantage, since it can be dispensed with additional ribs while maintaining rigidity.
  • the tool costs are lower.
  • the material flow is favored during casting, there is no additional effort required for additional cooling of the tool. This leads advantageously to a lower tool tuning requirement and less rejects.
  • casting methods such as die casting, sand casting or injection molding are used for the production.
  • the radii R i and R a can also be represented as bevels, ie the radii assume the value "infinite".

Landscapes

  • 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)

Claims (8)

  1. Bâche à huile (1) de moteur à combustion interne comportant une bride de montage (2) pour fixer la bâche à huile (1) au carter de vilebrequin du moteur recevant les parois latérales (3) de la bâche à huile (1), qui, en position de montage, géodésique, rejoignent en bas U le fond (4) avec un congé,
    bâche à huile caractérisée en ce que
    l'épaisseur (d) du fond augmente de manière continue en direction des parois (3) à partir du milieu géométrique (5) du fond,
    * le congé intérieur (Ri) à la jonction entre le fond (4) et les parois (3) étant supérieur ou égal au congé extérieur (Ra) correspondant.
  2. Bâche à huile selon la revendication 1,
    caractérisée en ce que
    l'épaisseur (d) du fond est au moins égale à 2 mm au milieu (5) du fond.
  3. Bâche à huile selon l'une des revendications 1 ou 2,
    caractérisée en ce qu'
    à la jonction avec le congé, l'épaisseur (d) du fond est au maximum égale à 10 mm.
  4. Bâche à huile selon l'une des revendications 1 à 3,
    caractérisée en ce que
    le congé extérieur (Ra) est au moins égal à 3 mm.
  5. Bâche à huile selon l'une des revendications 1 à 4,
    caractérisée en ce que
    le congé intérieur (Ri) est de préférence double du congé extérieur et est au moins égal à 6 mm.
  6. Bâche à huile selon l'une des revendications 1 à 5,
    caractérisée en ce que
    les parois (3) ont une géométrie correspondant au fond (4).
  7. Bâche à huile selon l'une des revendications 1 à 6,
    caractérisée en ce qu'
    elle est une pièce de fonte.
  8. Bâche à huile selon la revendication 7,
    caractérisée en ce qu'
    elle est une pièce de fonte sous pression ou une pièce de fonte dans une boîte à sable ou une pièce injectée.
EP20120159571 2011-04-18 2012-03-15 Réservoir de lubrifiant pour moteur à combustion interne Active EP2514934B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102011007567A DE102011007567A1 (de) 2011-04-18 2011-04-18 Schmiermittelwanne für eine Brennkraftmaschine

Publications (2)

Publication Number Publication Date
EP2514934A1 EP2514934A1 (fr) 2012-10-24
EP2514934B1 true EP2514934B1 (fr) 2014-10-01

Family

ID=45887973

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20120159571 Active EP2514934B1 (fr) 2011-04-18 2012-03-15 Réservoir de lubrifiant pour moteur à combustion interne

Country Status (2)

Country Link
EP (1) EP2514934B1 (fr)
DE (1) DE102011007567A1 (fr)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3232602A1 (de) 1982-09-02 1984-03-08 Walker Deutschland GmbH Fahrzeugteile Division, 6800 Mannheim Tiefgezogene motorenteile aus stahlblech
AT402435B (de) 1989-04-26 1997-05-26 Avl Verbrennungskraft Messtech Abschlussteil oder abschirmteil für motorgehäuse von brennkraftmaschinen
DE4014788C1 (fr) 1990-05-09 1991-03-14 Dr.Ing.H.C. F. Porsche Ag, 7000 Stuttgart, De
JPH10196341A (ja) * 1997-01-13 1998-07-28 Nissan Motor Co Ltd 内燃機関におけるオイルパンの制振構造
DE10302191B4 (de) 2003-01-20 2005-06-30 Carcoustics Tech Center Gmbh Akustisch wirksame Ölwanne
DE102004025450A1 (de) * 2004-05-19 2005-12-22 Joma-Polytec Kunststofftechnik Gmbh Ölwanne für einen Motor und/oder ein Getriebe
DE102006002956B4 (de) * 2006-01-21 2017-12-28 Joma-Polytec Gmbh Ölwanne für eine Brennkraftmaschine
US20090026015A1 (en) * 2007-07-26 2009-01-29 Ford Global Technologies, Llc Oil Pan With Flow Management Tunnel

Also Published As

Publication number Publication date
EP2514934A1 (fr) 2012-10-24
DE102011007567A1 (de) 2012-10-18

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