EP2321513B2 - Piston pour un moteur à combustion interne - Google Patents

Piston pour un moteur à combustion interne Download PDF

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Publication number
EP2321513B2
EP2321513B2 EP09776111.8A EP09776111A EP2321513B2 EP 2321513 B2 EP2321513 B2 EP 2321513B2 EP 09776111 A EP09776111 A EP 09776111A EP 2321513 B2 EP2321513 B2 EP 2321513B2
Authority
EP
European Patent Office
Prior art keywords
piston
outer circumferential
friction
weld seam
circumferential
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.)
Not-in-force
Application number
EP09776111.8A
Other languages
German (de)
English (en)
Other versions
EP2321513A1 (fr
EP2321513B1 (fr
Inventor
Peter Kemnitz
Carmen Klusch
Rainer Scharp
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.)
Mahle International GmbH
Original Assignee
Mahle International GmbH
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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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=41606146&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2321513(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Mahle International GmbH filed Critical Mahle International GmbH
Publication of EP2321513A1 publication Critical patent/EP2321513A1/fr
Application granted granted Critical
Publication of EP2321513B1 publication Critical patent/EP2321513B1/fr
Publication of EP2321513B2 publication Critical patent/EP2321513B2/fr
Not-in-force legal-status Critical Current
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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
    • F02F3/00—Pistons 
    • F02F3/16—Pistons  having cooling means
    • F02F3/20—Pistons  having cooling means the means being a fluid flowing through or along piston
    • F02F3/22—Pistons  having cooling means the means being a fluid flowing through or along piston the fluid being liquid
    • 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
    • F02F3/00—Pistons 
    • F02F3/0015—Multi-part pistons
    • F02F3/003—Multi-part pistons the parts being connected by casting, brazing, welding or clamping

Definitions

  • the present invention relates to a piston for an internal combustion engine, having a piston lower part and a piston upper part, which are joined together by friction welding and form an outer circumferential cooling channel, wherein the piston upper part has an outer circumferential land land and a ring groove provided below the land ridge encircling ring whose inner wall delimits the peripheral outer cooling channel, wherein the upper piston part has an outer circumferential support element and the lower piston part has an outer circumferential support element, which form an outer circumferential friction weld below the annular part.
  • a friction welded piston is also used in the US 2003/0051694 A1 shown.
  • the JP 2003/025076 A discloses a generic piston whose supporting elements forming the outer friction weld are arranged radially inwards.
  • the object of the present invention is thus to further develop a generic piston so that the risk of tension is reduced and the stability of the piston is improved.
  • the solution consists in a piston with the features of claim 1. According to the invention it is provided that the width of the outer circumferential friction weld at most is just as large as the wall thickness between the respective groove bottom of the annular grooves and the inner wall of the ring section, and that in the peripheral outer cooling channel in the region of the outer peripheral friction weld a trough is formed, in which a weld bead is received.
  • the width of the inner friction weld is less than previously known in the art. Nevertheless, the piston according to the invention is very stable for the reasons described above.
  • the inner support element (27) of the upper piston part (12) and the inner support element (28) of the piston lower part (15) are formed such that along the inner circumferential friction weld (30, 130) in the outer circumferential cooling channel (19 ) and / or in the inner region (24) a trough (31) is formed, in which a Sch spawulst (32) is received.
  • the piston lower part 15 has a piston shaft 14 and provided with hub bores 17 pin bosses 16.
  • the piston upper part 12 has a piston bottom 13, which is provided in the exemplary embodiment with a combustion bowl 11.
  • an outer circumferential fire bar 18 connects.
  • a circumferential ring portion 20 is provided, which is provided in the embodiment with three circumferential annular grooves 21, 22, 23 for piston rings (not shown).
  • the piston lower part 15 and the piston upper part 12 also together form an outer circumferential cooling channel 19.
  • the inner friction weld 30 has a width b2, which in the embodiment according to the FIGS. 1 and 2A in the context of the usual manufacturing tolerances is smaller than the width b1 of the outer friction weld 29. But the width b2 can also be exactly as large as the width b1.
  • the outer and inner support elements 26, 28 and 25, 27 of the lower piston part 15 and the piston upper part 12 are configured in the embodiment in the region of the friction welds 30, 29 such that the outer circumferential cooling channel 19 and the inner region 24 aligned, in the exemplary embodiment rotating , Troughs 31 are formed.
  • the Sch undulste 32 are added, which may arise during the Reibsch dovorgangs.
  • the surfaces of the walls of the cooling channel 19 are comparatively smooth.
  • the volume of the cooling channel 19 for receiving cooling oil remains unaffected.
  • the cooling oil in the cooling channel 19 can flow substantially without interference. The cooling effect of the cooling oil thus remains substantially preserved in this advantageous embodiment of the piston according to the invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)

Claims (6)

  1. Piston (10, 110) pour un moteur à combustion interne, avec une partie inférieure de piston (15) et une partie supérieure de piston (12), qui sont reliées ensemble par une soudure par friction et forment un canal de refroidissement (19) périphérique externe, où la partie supérieure de piston (12) présente un cordon de feu (18) périphérique externe ainsi qu'une partie annulaire (20) périphérique, munie de rainures annulaires (21, 22, 23), disposée en dessous du cordon de feu (18), dont la paroi interne (20') limite le canal de refroidissement (19) périphérique externe, où la partie supérieure de piston (12) présente un élément d'appui (25) périphérique externe et la partie inférieure de piston (15) présente un élément d'appui (26) périphérique externe, qui forment en dessous de la partie annulaire (20) un cordon de soudure par friction (29) périphérique externe, caractérisé en ce que la largeur (b1) du cordon de soudure par friction (29) périphérique externe est au plus aussi grande que l'épaisseur de paroi (d) entre les fonds de rainures (21', 22', 23') respectifs des rainures annulaires (21, 22, 23) et la paroi interne (20') de la partie annulaire (20), de sorte que les surfaces d'enveloppe externes (25a, 26a) des éléments d'appui (25, 26) ainsi que la surface d'enveloppe externe (12a) du cordon de feu (12) présentent le même diamètre extérieur (D), de telle manière qu'une cuvette (31) est formée dans le canal de refroidissement (19) externe dans la région du cordon de soudure par friction (29) périphérique externe, dans laquelle est logé un bourrelet de soudure (32).
  2. Piston selon la revendication 1, caractérisé en ce la largeur (b1) du cordon de soudure par friction (29) périphérique externe est aussi grande que l'épaisseur de paroi (d) entre les fonds de rainures (21', 22', 23') respectifs des rainures annulaires (21, 22, 23) et la paroi interne (20') de la partie annulaire (20).
  3. Piston selon la revendication 1, ou 2, caractérisé en ce qu'entre une région interne (24) du piston (10, 110) et le canal de refroidissement (19) périphérique externe, un cordon de soudure par friction (30, 130) périphérique interne est prévu.
  4. Piston selon la revendication 3, caractérisé en ce que la largeur (b3) du cordon de soudure par friction (130) périphérique interne est aussi grande que la largeur (b1) du cordon de soudure par friction (29) périphérique externe.
  5. Piston selon la revendication 3, caractérisé en ce que la largeur (b2) du cordon de soudure par friction (30) périphérique interne est inférieure à la largeur (b1) du cordon de soudure par friction (29) périphérique externe.
  6. Piston selon l'une des revendications précédentes, caractérisé en ce que l'élément d'appui (27) interne de la partie supérieure de piston (12) et l'élément d'appui (28) interne de la partie inférieure de piston (15) sont conçus de telle manière que le long du cordon de soudure par friction (30, 130) périphérique interne dans le canal de refroidissement (19) périphérique externe et/ou dans la région interne (24), une cuvette (31) est formée, dans laquelle est logé un bourrelet de soudure (32).
EP09776111.8A 2008-09-02 2009-08-26 Piston pour un moteur à combustion interne Not-in-force EP2321513B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008045456A DE102008045456A1 (de) 2008-09-02 2008-09-02 Kolben für einen Verbrennungsmotor
PCT/DE2009/001189 WO2010025703A1 (fr) 2008-09-02 2009-08-26 Piston pour un moteur à combustion interne

Publications (3)

Publication Number Publication Date
EP2321513A1 EP2321513A1 (fr) 2011-05-18
EP2321513B1 EP2321513B1 (fr) 2012-02-01
EP2321513B2 true EP2321513B2 (fr) 2016-12-21

Family

ID=41606146

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09776111.8A Not-in-force EP2321513B2 (fr) 2008-09-02 2009-08-26 Piston pour un moteur à combustion interne

Country Status (8)

Country Link
US (1) US8434400B2 (fr)
EP (1) EP2321513B2 (fr)
JP (1) JP5631314B2 (fr)
CN (1) CN202165174U (fr)
AT (1) ATE543996T1 (fr)
BR (1) BRPI0918059A2 (fr)
DE (1) DE102008045456A1 (fr)
WO (1) WO2010025703A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010033879A1 (de) * 2010-08-10 2012-02-16 Mahle International Gmbh Verfahren zur Herstellung eines Kolbens für einen Verbrennungsmotor sowie Kolben für einen Verbrennungsmotor
US9216474B2 (en) 2012-04-24 2015-12-22 Industrial Parts Depot, Llc Two-piece friction-welded piston
DE102012008947A1 (de) * 2012-05-05 2013-11-07 Mahle International Gmbh Verfahren zur Herstellung eines Kolbens für einen Verbrennungsmotor
US9243709B2 (en) * 2013-03-14 2016-01-26 Mahle International Gmbh Welded piston assembly
CN103437898A (zh) * 2013-09-22 2013-12-11 中国北方发动机研究所(天津) 一种带环形槽的柴油机活塞
US10449621B2 (en) * 2014-05-01 2019-10-22 Mahle International Gmbh Magnetic arc welded piston assembly
US10711732B2 (en) * 2017-01-19 2020-07-14 Industrial Parts Depot, Llc Reduced height piston
CN114810410B (zh) * 2022-05-10 2023-08-18 潍柴动力股份有限公司 一种活塞及发动机

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003025076A (ja) † 2001-07-09 2003-01-28 Riken Tanzou Kk 内燃機関のピストン製造方法
US20030051694A1 (en) † 2001-09-19 2003-03-20 Federal-Mogul World Wide, Inc. Closed gallery piston having con rod lubrication
US6557514B1 (en) † 2001-10-23 2003-05-06 Federal-Mogul World Wide, Inc. Closed gallery monobloc piston having oil drainage groove
WO2007031107A1 (fr) † 2005-09-17 2007-03-22 Ks Kolbenschmidt Gmbh Piston, en particulier piston a canal de refroidissement, comportant au moins trois zones de soudure par friction

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DE2537182A1 (de) * 1975-08-21 1977-03-03 Motoren Turbinen Union Kolben
US5769306A (en) * 1996-05-31 1998-06-23 The Boeing Company Weld root closure method for friction stir welds
US6213379B1 (en) * 1997-08-27 2001-04-10 Lockheed Martin Corporation Friction plug welding
US5934174A (en) * 1998-10-02 1999-08-10 Cummins Engine Company, Inc. Lightweight articulated piston head and method of making the piston head
DE10210570A1 (de) * 2002-03-09 2003-09-18 Mahle Gmbh Mehrteiliger gekühlter Kolben für einen Verbrennungsmotor
DE10228103A1 (de) 2002-06-24 2004-01-15 Bayer Cropscience Ag Fungizide Wirkstoffkombinationen
DE10244512A1 (de) * 2002-09-25 2004-04-15 Mahle Gmbh Mehrteiliger gekühlter Kolben für einen Verbrennungsmotor
US6825450B2 (en) * 2002-11-06 2004-11-30 Federal-Mogul World Wide, Inc. Piston and method of manufacture
DE10325914B4 (de) * 2003-06-07 2012-08-02 Mahle Gmbh Kolben für einen Verbrennungsmotor
US7563748B2 (en) 2003-06-23 2009-07-21 Cognis Ip Management Gmbh Alcohol alkoxylate carriers for pesticide active ingredients
US7005620B2 (en) * 2003-11-04 2006-02-28 Federal-Mogul World Wide, Inc. Piston and method of manufacture
US7104183B2 (en) * 2004-07-07 2006-09-12 Karl Schmidt Unisia, Inc. One-piece steel piston
DE102004061778A1 (de) * 2004-09-29 2006-04-06 Ks Kolbenschmidt Gmbh Einfach-Reibschweißung
JP2006150397A (ja) * 2004-11-29 2006-06-15 Hitachi Metals Ltd リングプロジェクション溶接方法およびリングプロジェクション溶接部材
DE102006027354A1 (de) * 2006-06-13 2007-12-20 Mahle International Gmbh Mehrteiliger gekühlter Kolben für einen Verbrennungsmotor
DE102007027162A1 (de) * 2007-06-13 2008-12-18 Mahle International Gmbh Zweiteiliger Kolben für einen Verbrennungsmotor
DE102008011922A1 (de) * 2008-02-29 2009-09-03 Ks Kolbenschmidt Gmbh Kolben für Brennkraftmaschinen, hergestellt mittels eines Multi-Orbitalen Reibschweißverfahrens

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003025076A (ja) † 2001-07-09 2003-01-28 Riken Tanzou Kk 内燃機関のピストン製造方法
US20030051694A1 (en) † 2001-09-19 2003-03-20 Federal-Mogul World Wide, Inc. Closed gallery piston having con rod lubrication
US6557514B1 (en) † 2001-10-23 2003-05-06 Federal-Mogul World Wide, Inc. Closed gallery monobloc piston having oil drainage groove
WO2007031107A1 (fr) † 2005-09-17 2007-03-22 Ks Kolbenschmidt Gmbh Piston, en particulier piston a canal de refroidissement, comportant au moins trois zones de soudure par friction

Also Published As

Publication number Publication date
CN202165174U (zh) 2012-03-14
WO2010025703A1 (fr) 2010-03-11
JP2012501408A (ja) 2012-01-19
DE102008045456A1 (de) 2010-03-04
BRPI0918059A2 (pt) 2015-12-01
US8434400B2 (en) 2013-05-07
US20100050862A1 (en) 2010-03-04
EP2321513A1 (fr) 2011-05-18
EP2321513B1 (fr) 2012-02-01
ATE543996T1 (de) 2012-02-15
JP5631314B2 (ja) 2014-11-26

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