EP2514934A1 - 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
EP2514934A1
EP2514934A1 EP12159571A EP12159571A EP2514934A1 EP 2514934 A1 EP2514934 A1 EP 2514934A1 EP 12159571 A EP12159571 A EP 12159571A EP 12159571 A EP12159571 A EP 12159571A EP 2514934 A1 EP2514934 A1 EP 2514934A1
Authority
EP
European Patent Office
Prior art keywords
lubricant
walls
radius
trough
combustion engine
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP12159571A
Other languages
German (de)
English (en)
Other versions
EP2514934B1 (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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Filing date
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.
  • Die casting lubricant troughs 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 show a lubricant pan that is easy to manufacture and meets the acoustic requirements while maintaining rigidity.
  • the lubricant pan Due to the design of the lubricant pan a significant weight advantage is achieved while maintaining rigidity, since according to the invention can be dispensed with additional ribs.
  • the tooling costs are significantly lower, since, for example, no ribbing and / or undercut can be provided on the tool side.
  • no effort for additional cooling of the tools is necessary because no rib areas must be cooled. This leads advantageously to a lower tool tuning requirement and fewer reject parts.
  • the non-ribbed surface of the lubricant pan according to the invention less fire cracks and breakouts on the casting tools, which can be made with a casting tool more lubricant pans and thus the production costs can be reduced.
  • the shape of the material flow in the casting process is favored.
  • the size ranges according to the claims 2 to 5 are particularly preferred size range for a lubricant pan 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.
  • 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 geodetic down over a radius in a bottom 4 of the lubricant pan 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 geometric 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 floor 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 with constant stiffness can be dispensed with additional ribs.
  • the tool costs are lower.
  • the material flow is favored during casting, there is no additional overhead costs for additional cooling of the tool necessary. 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)
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 true EP2514934A1 (fr) 2012-10-24
EP2514934B1 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)

Citations (7)

* 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
DE4009688A1 (de) 1989-04-26 1990-10-31 Avl Verbrennungskraft Messtech Abschlussteil oder abschirmteil fuer motorgehaeuse von brennkraftmaschinen
DE4014788C1 (fr) 1990-05-09 1991-03-14 Dr.Ing.H.C. F. Porsche Ag, 7000 Stuttgart, De
US6041751A (en) * 1997-01-13 2000-03-28 Nissan Motor Co., Ltd. Oil pan of internal combustion engine
DE10302191A1 (de) 2003-01-20 2004-08-05 Carcoustics Tech Center Gmbh Akustisch wirksame Ölwanne
EP1816321A1 (fr) * 2006-01-21 2007-08-08 Joma-Polytec Kunststofftechnik GmbH Carter d'huile pour moteur à combustion
GB2451326A (en) * 2007-07-26 2009-01-28 Ford Global Tech Llc I.c. engine oil pan with oil flow tunnel

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004025450A1 (de) * 2004-05-19 2005-12-22 Joma-Polytec Kunststofftechnik Gmbh Ölwanne für einen Motor und/oder ein Getriebe

Patent Citations (7)

* 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
DE4009688A1 (de) 1989-04-26 1990-10-31 Avl Verbrennungskraft Messtech Abschlussteil oder abschirmteil fuer motorgehaeuse von brennkraftmaschinen
DE4014788C1 (fr) 1990-05-09 1991-03-14 Dr.Ing.H.C. F. Porsche Ag, 7000 Stuttgart, De
US6041751A (en) * 1997-01-13 2000-03-28 Nissan Motor Co., Ltd. Oil pan of internal combustion engine
DE10302191A1 (de) 2003-01-20 2004-08-05 Carcoustics Tech Center Gmbh Akustisch wirksame Ölwanne
EP1816321A1 (fr) * 2006-01-21 2007-08-08 Joma-Polytec Kunststofftechnik GmbH Carter d'huile pour moteur à combustion
GB2451326A (en) * 2007-07-26 2009-01-28 Ford Global Tech Llc I.c. engine oil pan with oil flow tunnel

Also Published As

Publication number Publication date
EP2514934B1 (fr) 2014-10-01
DE102011007567A1 (de) 2012-10-18

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