EP1546535B1 - Mehrteiligen gekühlten kolben für einen verbrennungsmotor - Google Patents

Mehrteiligen gekühlten kolben für einen verbrennungsmotor Download PDF

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Publication number
EP1546535B1
EP1546535B1 EP03769200A EP03769200A EP1546535B1 EP 1546535 B1 EP1546535 B1 EP 1546535B1 EP 03769200 A EP03769200 A EP 03769200A EP 03769200 A EP03769200 A EP 03769200A EP 1546535 B1 EP1546535 B1 EP 1546535B1
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EP
European Patent Office
Prior art keywords
piston
pistons
fact
holes
accordance
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
EP03769200A
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German (de)
English (en)
French (fr)
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EP1546535A1 (de
Inventor
Peter Kemnitz
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 GmbH
Original Assignee
Mahle GmbH
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Filing date
Publication date
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Publication of EP1546535A1 publication Critical patent/EP1546535A1/de
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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 
    • 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
    • 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 
    • F02F3/0084—Pistons  the pistons being constructed from specific materials
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2201/00—Metals
    • F05C2201/04—Heavy metals
    • F05C2201/0433—Iron group; Ferrous alloys, e.g. steel
    • F05C2201/0448—Steel

Definitions

  • the invention relates to a multi-part cooled piston for an internal combustion engine according to the preamble of claim 1.
  • a multi-part cooled piston for an internal combustion engine is from the JP 61175255 A known.
  • This piston shows at the level of the ring portion of the piston a number of ribs, between which a heat-insulating plate for minimizing the heat transfer from the combustion bowl to the ring section is arranged.
  • a pendulum piston which consists of a piston body with a piston upper part and formed thereon with pin bosses and a separate shaft part, which is connected by means of piston pin with the piston body.
  • the pendulum piston has an annular cooling channel, which is bounded partly by the upper piston part and partly by the shaft part, and also has no technical features that improve the cooling effect of flowing in the cooling channel cooling oil.
  • the invention is therefore based on the object to provide a multi-part cooled piston, which is inexpensive to produce with a sufficient dimensional stability and a cooling system with improved cooling effect.
  • the cooling channel can be formed closer to the piston crown or combustion bowl and nevertheless has excellent dimensional stability.
  • the arrangement of the support ribs a kind of chamber formation in the cooling channel, d. h., A generation of shaker chambers, whereby an extension of the residence time of the cooling oil and thus an improved heat dissipation of the piston areas to be cooled is achieved.
  • the multi-part cooled piston 20 consists of a forged piston upper part 1 with a combustion bowl 3, ring wall 4 with ring portion 11 and a (upper, towards the piston head) part of a cooling channel 7 and a piston lower part 2, the (lower, the piston shaft 9 out ) Part of a cooling channel 7, a piston shaft 9 and hub supports 6, as shown Fig. 5 can be seen.
  • holes 14 are provided in the cooling channel 7, which are arranged distributed symmetrically on the circumference and in the direction of the piston crown, ie parallel to the piston longitudinal axis K, are introduced.
  • the depth h B of the holes is at most half the total height H of the cooling channel 7, so that an unhindered cooling oil circuit is ensured.
  • FIGS. 3 and 4 show, between the holes 14 designated as support ribs 8 material areas go radially to the piston longitudinal axis K in sections of an annular rib 5, which forms the annular rib 5 in its entirety.
  • the holes 14 and thus the support ribs 8 are, as in Fig. 4 represented, distributed radially symmetrically over the circumference of the cooling channel 7 arranged.
  • the distribution can be designed such that in pressure-back pressure direction D, GD of the piston 20, a larger number of holes 14 and thus support ribs 8 is arranged, as transverse to it, ie, a single-ended circumferential distribution in Cooling channel 7 takes place.
  • the distribution of the bores 14 and thus of the support ribs 8 in the cooling channel 7 when it is characterized according to the quadrant formed by the piston main axes K H I - IV be such that within a quadrant a symmetric ( Figure 6 ) or unbalanced distribution (not shown) is provided, which in the opposite quadrant, ie I. and III. or II. and IV., finds again.
  • the holes 14 can thereby by round holes, as in the FIGS. 4 and 6 shown, or oblong holes (not shown), which are aligned with its long side in the direction of the piston center radially outward to the piston wall.
  • the tips of the holes 14 may be round or, as in Fig. 1 shown to be angled.
  • the axes of the holes 14 can, as Fig. 1 shows, parallel to the piston longitudinal axis K and / or, that is, in combination, to be arranged at an acute angle thereto, the bores 14 pointing in the direction of the combustion bowl 3.
  • annular circumferential support rib 10 is formed, as seen from Fig. 3 can be seen, which corresponds in their geometric dimensions with the annular rib 5.
  • the upper piston part 1 and the lower piston part 2 are permanently connected to each other via the supporting and annular ribs 10 and 5 by means of a welding or soldering process, subsequently finishing the piston 20 to a piston which can be used in a motor by means of machining.
  • the upper piston part 1 is advantageously made of an oxidation-resistant and / or heat-resistant material and the lower piston part 2 of a precipitation-hardening ferritic-pearlitic steel or tempered steel.
  • the outer piston wall regions between two piston parts 1 and 2 form a bearing surface, which is characterized by a few tenths of a millimeter wide gap 13. This can remain open or be sealed by means of a temperature-resistant sealing ring, which is positioned before joining both piston parts 1 and 2 on one of the bearing surfaces, for example, the piston lower part 2.

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)
  • Fuel-Injection Apparatus (AREA)
EP03769200A 2002-09-25 2003-09-19 Mehrteiligen gekühlten kolben für einen verbrennungsmotor Expired - Lifetime EP1546535B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10244512 2002-09-25
DE10244512A DE10244512A1 (de) 2002-09-25 2002-09-25 Mehrteiliger gekühlter Kolben für einen Verbrennungsmotor
PCT/DE2003/003114 WO2004029442A1 (de) 2002-09-25 2003-09-19 Mehrteiligen gekühlten kolben für einen verbrennungsmotor

Publications (2)

Publication Number Publication Date
EP1546535A1 EP1546535A1 (de) 2005-06-29
EP1546535B1 true EP1546535B1 (de) 2011-08-31

Family

ID=31502554

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03769200A Expired - Lifetime EP1546535B1 (de) 2002-09-25 2003-09-19 Mehrteiligen gekühlten kolben für einen verbrennungsmotor

Country Status (9)

Country Link
US (1) US6698391B1 (zh)
EP (1) EP1546535B1 (zh)
JP (1) JP2006500505A (zh)
KR (1) KR20050057574A (zh)
CN (1) CN100353046C (zh)
BR (1) BR0314963B1 (zh)
DE (1) DE10244512A1 (zh)
HK (1) HK1078917A1 (zh)
WO (1) WO2004029442A1 (zh)

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KR20050039320A (ko) * 2003-10-24 2005-04-29 현대자동차주식회사 내연기관 엔진용 피스톤
WO2005121608A1 (en) * 2004-06-08 2005-12-22 Savice Limited A piston, a ring and a piston assembly for a two cycle engine
US7406941B2 (en) 2004-07-21 2008-08-05 Federal - Mogul World Wide, Inc. One piece cast steel monobloc piston
DE102004061778A1 (de) * 2004-09-29 2006-04-06 Ks Kolbenschmidt Gmbh Einfach-Reibschweißung
US20080271597A1 (en) * 2006-03-31 2008-11-06 Soul David F Methods and apparatus for operating an internal combustion engine
DE102007027162A1 (de) * 2007-06-13 2008-12-18 Mahle International Gmbh Zweiteiliger Kolben für einen Verbrennungsmotor
DE102007044106A1 (de) * 2007-09-15 2009-03-19 Mahle International Gmbh Zweiteiliger Kolben für einen Verbrennungsmotor
DE102007050213A1 (de) 2007-10-20 2009-04-23 Mahle International Gmbh Kolben für einen Verbrennungsmotor
US7918155B2 (en) * 2007-12-12 2011-04-05 Mahle International Gmbh Piston with a cooling gallery
DE102007061601A1 (de) * 2007-12-20 2009-06-25 Mahle International Gmbh Kolben für einen Verbrennungsmotor sowie Verfahren zu seiner Herstellung
DE102008011922A1 (de) 2008-02-29 2009-09-03 Ks Kolbenschmidt Gmbh Kolben für Brennkraftmaschinen, hergestellt mittels eines Multi-Orbitalen Reibschweißverfahrens
DE102008034430B4 (de) * 2008-07-24 2015-02-19 Ks Kolbenschmidt Gmbh Reibgeschweißter Stahlkolben mit optimiertem Kühlkanal
DE102008045456A1 (de) * 2008-09-02 2010-03-04 Mahle International Gmbh Kolben für einen Verbrennungsmotor
JP5008627B2 (ja) * 2008-09-17 2012-08-22 本田技研工業株式会社 ピストンおよびその製造方法
CN101644327B (zh) * 2009-06-10 2013-01-16 北京中清能发动机技术有限公司 曲柄圆滑块机构的活塞及其内燃机
DE102009025691A1 (de) 2009-06-20 2010-01-28 Daimler Ag Kolben für eine Verbrennungskraftmaschine
US20110030214A1 (en) * 2009-08-05 2011-02-10 Wolfgang Rein Piston assembly multiple step forming process
DE102010015568A1 (de) * 2010-04-19 2011-10-20 Ks Kolbenschmidt Gmbh Kolbenoberteil eines gebauten oder geschweißten Kolbens mit erweiterten Kühlräumen
DE102011113800A1 (de) * 2011-09-20 2013-03-21 Mahle International Gmbh Kolben für einen Verbrennungsmotor und Verfahren zu seiner Herstellung
US9670871B2 (en) * 2011-09-28 2017-06-06 Ks Kolbenschmidt Gmbh Two-part steel piston for internal combustion engines
US20150226151A1 (en) * 2012-09-27 2015-08-13 Ks Kolenbenschmidt Gmbh Piston of two-piece construction for an internal combustion engine
EP2951471A1 (en) * 2013-01-29 2015-12-09 Mahle International GmbH Steel piston with fourth land guidance and improved friction characteristics
US10787991B2 (en) 2013-02-18 2020-09-29 Tenneco Inc. Complex-shaped forged piston oil galleries
US9243582B2 (en) 2013-02-18 2016-01-26 Federal-Mogul Corporation Complex-shaped piston oil galleries with piston crowns made by cast metal or powder metal processes
US9334958B2 (en) 2013-02-18 2016-05-10 Federal-Mogul Corporation Complex-shaped forged piston oil galleries
CN106662035B (zh) * 2014-07-02 2019-07-23 Ks科尔本施密特有限公司 在材料锁合地接合的冷却通道活塞中的间隙几何结构
US10184422B2 (en) 2014-12-30 2019-01-22 Tenneco Inc. Reduced compression height dual gallery piston, piston assembly therewith and methods of construction thereof
JP2018505341A (ja) * 2015-01-30 2018-02-22 フェデラル−モーグル・リミテッド・ライアビリティ・カンパニーＦｅｄｅｒａｌ−Ｍｏｇｕｌ Ｌｌｃ 封止された冷却ギャラリを備えるピストンおよびその構成方法
DE102015006642A1 (de) * 2015-05-22 2016-11-24 Caterpillar Motoren Gmbh & Co. Kg Kolbenbodenbereitstellende baugruppe
DE102017109471A1 (de) 2016-05-04 2017-11-09 Ks Kolbenschmidt Gmbh Kolben
JP7137786B2 (ja) * 2018-09-25 2022-09-15 スズキ株式会社 内燃機関のピストン
CN109268495B (zh) * 2018-11-19 2020-07-10 滨州渤海活塞有限公司 一种钢活塞与活塞销的组合及其加工工艺

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Also Published As

Publication number Publication date
CN100353046C (zh) 2007-12-05
WO2004029442A1 (de) 2004-04-08
BR0314963A (pt) 2005-08-02
DE10244512A1 (de) 2004-04-15
KR20050057574A (ko) 2005-06-16
JP2006500505A (ja) 2006-01-05
BR0314963B1 (pt) 2012-08-21
US6698391B1 (en) 2004-03-02
CN1685143A (zh) 2005-10-19
EP1546535A1 (de) 2005-06-29
HK1078917A1 (en) 2006-03-24

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