EP0515773B1 - Structure renfort d'un bloc cylindrique de machine à pistons en particulier moteur à combustion interne - Google Patents

Structure renfort d'un bloc cylindrique de machine à pistons en particulier moteur à combustion interne Download PDF

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Publication number
EP0515773B1
EP0515773B1 EP92102365A EP92102365A EP0515773B1 EP 0515773 B1 EP0515773 B1 EP 0515773B1 EP 92102365 A EP92102365 A EP 92102365A EP 92102365 A EP92102365 A EP 92102365A EP 0515773 B1 EP0515773 B1 EP 0515773B1
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EP
European Patent Office
Prior art keywords
guide surfaces
baffle
struts
crankcase
disposed
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
EP92102365A
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German (de)
English (en)
Other versions
EP0515773A1 (fr
Inventor
Alfred Sadlauer
Johann Stastny
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
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
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Publication of EP0515773A1 publication Critical patent/EP0515773A1/fr
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Publication of EP0515773B1 publication Critical patent/EP0515773B1/fr
Anticipated expiration legal-status Critical
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F7/00—Casings, e.g. crankcases or frames
    • F02F7/0043—Arrangements of mechanical drive elements
    • F02F7/0053—Crankshaft bearings fitted in the crankcase
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F7/00—Casings, e.g. crankcases or frames
    • F02F7/0021—Construction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F7/00—Casings, e.g. crankcases or frames
    • F02F7/0043—Arrangements of mechanical drive elements
    • F02F7/0053—Crankshaft bearings fitted in the crankcase
    • F02F2007/0056—Crankshaft bearings fitted in the crankcase using bearing beams, i.e. bearings interconnected by a beam or multiple beams

Definitions

  • the invention relates to a device for stiffening the crankcase of a reciprocating engine according to the features specified in the preamble of claim 1.
  • crankcases for internal combustion engines with housing walls extended far beyond the split bearings of a crankshaft it is e.g. from AT-C-308 475 known to stiffen the crankcase walls in the free edge areas by a detachable frame with ladder-like struts to increase the bending and torsional stiffness and to reduce sound radiation.
  • DE-C 37 29 966 shows a stiffening device designed as a casting with a cross-sectionally U-shaped, straight stiffening struts
  • DE-A 39 11 014 shows a stiffening device with cranked, U-shaped struts.
  • stiffening struts also U-shaped in cross section, which between baffle or guide surfaces arranged in one piece in a V-shape.
  • DE-A 1 576 361 and DE-A 33 15 304 show further devices for avoiding the disadvantageous oil splashing by the crank mechanism, the respective device being equipped with deflection tongues or cooled cutting-like lamellae arranged obliquely to a lubricating oil roller rotating with the crank mechanism.
  • the invention has for its object to design the stiffening device described above, including the aforementioned oil-repellent device with little additional material so that the bending and torsional rigidity is increased.
  • the shell-like stiffening device preferably being designed as a die-cast part in light metal.
  • a reciprocating piston internal combustion engine 1 shown only in sections in cross section comprises a crankcase 2 with crankcase walls 3 and 4.
  • a crank mechanism 5 arranged between them comprises a crankshaft 6 with counterweights 7 on both sides of a diametrically arranged crank pin 8 for a connecting rod 9 for a piston, not shown.
  • a strut 11 with a U-shaped cross section connected to the crankcase walls 3 and 4.
  • the mutually facing legs 12 of the struts 11 of the stiffening device 13 arranged at a crankshaft bearing spacing are baffle or guide surfaces 14 arranged obliquely to a lubricating oil roller rotating or entrained with the crank mechanism 5 in the direction of arrow A, 14 'and 15, 15' and 16, 16 'and 17, 18, 19 firmly connected.
  • baffle or guide surfaces are for the particularly effective reduction of oil spill work Movement contours of different engine parts - crankshaft balancing weights 7 and large bearing eye 20 of the connecting rod 9 - specially adapted.
  • Fig. 2 shows that adapted to the movement contour 21 of the crankshaft balancing weights 7 adapted baffle or guide surfaces 14, 14 'and 15, 15' and 16, 16 'are arranged on the legs 12 of the struts. In their end regions facing one another, these impact or guide surfaces are connected to supporting walls 22, 22 ′ which are essentially parallel to and spaced apart from the legs 12, between which adapted impact or guide surfaces are adapted to the movement contour 23 of the large connecting rod bearing eye 20 17, 18 and 19 are arranged.
  • This enables a frameless design of the device 13 with an arrangement via the struts 11 that is separate from the attachment of an oil pan 24 to the crankcase walls 3 and 4.
  • the device 13 is designed as a die-cast part in light metal with little material expenditure.
  • the lubricating oil separated via the aforementioned baffle or guide surfaces from the lubricating oil roller rotating with the crankshaft 6 according to arrow A is transferred between the connecting rod or guide surfaces 14, 14 '; 15, 15'; 16, 16 'and 17, 18, 19 openings 25 arranged in the stiffening device 13 are guided into the oil pan 24.

Claims (5)

  1. Dispositif pour renforcer le carter de vilebreguin d'un moteur à pistons, notamment d'un moteur à combustion interne, dispositif comprenant, transversalement par rapport à un mécanisme bielle-manivelle (5) et s'étendant entre ces parties de mécanisme à moteur en rotation, des entretoises (11) de section transversale essentiellement en forme de U, qui, avec des surfaces d'impact ou des surfaces conductrices (14 - 19) fixées de façon inamovible et réduisant le cylindre d'huile de lubrification tournant avec le mécanisme bielle-manivelle (5), relient les parois (3, 4) du carter de vilebrequin du moteur (1) des deux côtés du mécanisme à bielle et manivelle (5), tandis que les surfaces d'impact ou les surfaces conductrices (14 - 19) délimitent des ouvertures de passage (25) pour l'huile de lubrification, dispositif caractérisé en ce que :
    - des surfaces d'impact ou des surfaces conductrices (14, 14' ; 15, 15' ; 16, 16') disposées obliquement, séparées les unes des autres et décalées les unes par rapport aux autres en formant des ouvertures de passage (25), sont réparties le long du contour de déplacement (21) d'une partie du mécanisme moteur entre les zones d'extrémités ou les vissages des entretoises (11) respectives sur les côtés latéraux (12) de celles-ci, et
    - ces surfaces d'impact ou ces surfaces conductrices (14 - 16') sont en liaison dans leurs zones terminales tournées les unes vers les autres, avec des parois porteuses (22, 22') espacées les unes des autres, essentiellement parallèles aux côtés latéraux (12), tandis que
    - entre des parois porteuses voisines espacées (22, 22'), des surfaces d'impact ou des surfaces conductrices (17, 18, 19) supplémentaires, disposées obliquement, séparées les unes des autres et décalées les unes par rapport aux autres en formant des ouvertures de passage (25), servent à assurer un assemolage inamovible, par l'intermédiaire des surfaces d'impact ou des surfaces conductrices (14 - 16'), entre les entretoises (11) pour un dispositif de renforcement (13) en forme de coquille.
  2. Dispositif selon la revendication 1 caractérisé en ce que les surfaces d'impact ou les surfaces conductrices (14 - 16') sur les côtés latéraux, et les surfaces d'impact ou les surfaces conductrices (17 - 19) disposées entre les parois porteuses (22, 22'), sont disposées de façon à être adaptées aux contours de déplacement (21, 23) de différentes parties du mécanisme moteur (7, 20).
  3. Dispositif selon la revendication 1 et la revendication 2 caractérisé en ce que :
    - les bords des surfaces d'impact ou des surfaces conductrices (14, 14' ; 15, 15' ; 16, 16') délimitant les ouvertures (25), sont disposés de façon à être adaptés aux contours de déplacement (21) des contrepoids d'équilibrage (7) de l'arbre de vilebrequin, et
    - les bords délimitant les ouvertures (25) des surfaces d'impact ou des surfaces conductrices (17, 18, 19), prévus entre les parois porteuses (22, 22'), sont disposés de façon à être adaptés aux contours de déplacement (23) d'un grand coussinet de bielle (20) tournant avec l'arbre de vilebrequin (6).
  4. Dispositif selon les revendications 1 à 3 caractérisé en ce que le dispositif (13) est réalisé sous la forme d'une pièce coulée sous pression en métal léger.
  5. Dispositif selon les revendications 1 à 4 caractérisé par une configuration sans cadre avec un agencement sur le carter de vilebrequin (2), distinct de la fixation d'une cuve à huile (24) sur les parois (3, 4) du carter de vilebrequin.
EP92102365A 1991-05-25 1992-02-13 Structure renfort d'un bloc cylindrique de machine à pistons en particulier moteur à combustion interne Expired - Lifetime EP0515773B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4117153 1991-05-25
DE4117153 1991-05-25

Publications (2)

Publication Number Publication Date
EP0515773A1 EP0515773A1 (fr) 1992-12-02
EP0515773B1 true EP0515773B1 (fr) 1995-06-14

Family

ID=6432444

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92102365A Expired - Lifetime EP0515773B1 (fr) 1991-05-25 1992-02-13 Structure renfort d'un bloc cylindrique de machine à pistons en particulier moteur à combustion interne

Country Status (3)

Country Link
EP (1) EP0515773B1 (fr)
AT (1) ATE123845T1 (fr)
DE (1) DE59202494D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008060412A1 (de) 2008-11-28 2010-06-02 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Verbrennungsmotor

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19754008C2 (de) * 1997-12-05 2003-04-10 Daimler Chrysler Ag Hubkolbenbrennkraftmaschine
AT3681U1 (de) * 1998-10-06 2000-06-26 Avl List Gmbh Mehrzylinder-brennkraftmaschine mit zumindest einer ersten ausgleichswelle
DE10232318A1 (de) * 2002-07-17 2004-02-05 Bayerische Motoren Werke Ag Maschinengehäuse für eine Brennkraftmaschine
DE102005057258A1 (de) * 2005-12-01 2007-06-06 Audi Ag Brennkraftmaschine mit einem mehrteiligen Zylinderkurbelgehäuse
DE102005057717A1 (de) * 2005-12-02 2007-06-06 Fev Motorentechnik Gmbh Zylinder-Kurbelgehäuse eines Verbrennungsmotors
US20070283918A1 (en) * 2006-06-07 2007-12-13 Ford Global Technologies, Llc Combination Bearing Beam and Crankshaft-Interactive Oil Management Device for Internal Combustion Engine

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4793299A (en) * 1986-07-08 1988-12-27 Mazda Motor Corporation Engine cylinder block reinforcing structure

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3315304A1 (de) * 1983-04-27 1984-10-31 Bayerische Motoren Werke AG, 8000 München Fluessigkeitsgekuehlte hubkolben-brennkraftmaschine mit einem kuehlmittel-schmieroel-waermetauscher
DE3444838C2 (de) * 1984-12-08 1986-10-30 Bayerische Motoren Werke AG, 8000 München Gehäuse für Hubkolben-Brennkraftmaschine, insbesondere Motorblock
JPH071025B2 (ja) * 1988-04-05 1995-01-11 マツダ株式会社 エンジンのシリンダブロック補強装置
JP2548173Y2 (ja) * 1989-09-12 1997-09-17 マツダ株式会社 エンジンのシリンダブロック補強構造

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4793299A (en) * 1986-07-08 1988-12-27 Mazda Motor Corporation Engine cylinder block reinforcing structure

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008060412A1 (de) 2008-11-28 2010-06-02 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Verbrennungsmotor
DE102008060412B4 (de) 2008-11-28 2023-03-30 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Verbrennungsmotor

Also Published As

Publication number Publication date
DE59202494D1 (de) 1995-07-20
ATE123845T1 (de) 1995-06-15
EP0515773A1 (fr) 1992-12-02

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