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WO2009000420A1 - Piston pour un moteur à combustion interne et procédé pour sa fabrication - Google Patents

Piston pour un moteur à combustion interne et procédé pour sa fabrication Download PDF

Info

Publication number
WO2009000420A1
WO2009000420A1 PCT/EP2008/004653 EP2008004653W WO2009000420A1 WO 2009000420 A1 WO2009000420 A1 WO 2009000420A1 EP 2008004653 W EP2008004653 W EP 2008004653W WO 2009000420 A1 WO2009000420 A1 WO 2009000420A1
Authority
WO
WIPO (PCT)
Prior art keywords
piston
combustion chamber
covering part
main body
lining part
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.)
Ceased
Application number
PCT/EP2008/004653
Other languages
German (de)
English (en)
Inventor
Erwin Schmidt
Siegfried Sumser
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.)
Mercedes Benz Group AG
Original Assignee
Daimler 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
Application filed by Daimler AG filed Critical Daimler AG
Publication of WO2009000420A1 publication Critical patent/WO2009000420A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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 
    • F02F3/02—Pistons  having means for accommodating or controlling heat expansion
    • F02F3/04—Pistons  having means for accommodating or controlling heat expansion having expansion-controlling inserts
    • F02F3/045—Pistons  having means for accommodating or controlling heat expansion having expansion-controlling inserts the inserts being located in the crown
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D19/00—Casting in, on, or around objects which form part of the product
    • B22D19/0009—Cylinders, 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 
    • F02F3/10—Pistons  having surface coverings
    • F02F3/12—Pistons  having surface coverings on piston heads
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B23/00—Other engines characterised by special shape or construction of combustion chambers to improve operation
    • F02B23/02—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition
    • F02B23/06—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition the combustion space being arranged in working piston
    • F02B23/0603—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition the combustion space being arranged in working piston at least part of the interior volume or the wall of the combustion space being made of material different from the surrounding piston part, e.g. combustion space formed within a ceramic part fixed to a metal piston head

Definitions

  • Piston for an internal combustion engine and method for its
  • the invention relates to a piston for an internal combustion engine specified in the preamble of claim 1. Art. Furthermore, the invention relates to a method for producing such a piston specified in the preamble of claim 7 Art.
  • the object of the present invention is therefore to improve a piston and a method for the production thereof so that, on the one hand, a particularly high resistance and, on the other hand, a particularly simple production of the piston can be realized.
  • This object is achieved by a piston and a method for its preparation with the features of claims 1 and 7, respectively.
  • Advantageous embodiments with expedient and non-trivial developments of the invention are specified in the respective dependent claims.
  • the further component is formed as a covering part, which completely forms the combustion chamber facing the piston surface of the piston.
  • a lining part which completely covers or forms at least the piston surface facing the combustion chamber. The complete coverage thus ensures that the combustion chamber resulting thermal and mechanical stress can be absorbed by the piston accordingly.
  • the lining part - as will be explained in more detail below - be made relatively thin relative to the piston diameter of the piston, so that a total of both a simple production of the lining part itself as well as the piston can be realized in total.
  • the covering part and the piston body is made of a same base alloy, wherein the covering part is subjected to a tempering process - for example, a thermal and possibly also chemical and material-technical tempering.
  • a tempering process for example, a thermal and possibly also chemical and material-technical tempering.
  • the covering part is provided on its side facing the piston main body with connecting means - for example in the form of a surface structure or in the form of anchors. In this way, a particularly reliable connection of the lining part to the piston main body can be achieved.
  • the lining part has a shell thickness, which is based on a piston diameter according to the formula 1% ⁇ S / D ⁇ 10%. If the shell thickness of the lining part lies in the specified value range, then on the one hand a particularly simple production of the lining part itself can be realized and on the other hand a good and reliable connection to the piston main body.
  • the outer peripheral side of the piston is formed at least partially by the lining part.
  • the lining part it is possible, for example, to easily map piston ring grooves of the piston in the region of the covering part.
  • the production of the lining part itself is preferably carried out in a casting or ümformmaschinen, depending on how complex, for example, the intended on the piston body facing side connecting means should be formed.
  • Figure 1 is a partial sectional and partial side view of a piston for an internal combustion engine, which consists of a piston body and a completely forming the combustion chamber facing the piston surface forming part.
  • FIG. 2 shows a partial sectional and partial side view of the piston according to FIG. 1, wherein the covering part is shown in an alternative embodiment and at least partially also forms the outer peripheral side of the piston;
  • Fig. 3 is a partial sectional and partial side view of the piston according to FIGS. 1 and 2, wherein the covering part is shown in a third embodiment, which mediates a Moderator layer is connected to the piston body.
  • FIGS. 1 to 3 each show a piston for an internal combustion engine, which is shown in a partial side view to the left of a central axis m of the piston in a partial sectional view and to the right of the central axis m.
  • the piston is provided for a truck diesel engine.
  • the piston could also be used in other internal combustion engines.
  • the piston in particular comprises a piston head 10, the piston surface 12 of which faces a combustion chamber 14, not shown, of the internal combustion engine. It is common to all three embodiments according to FIGS. 1 to 3 that the piston surface 12 of the piston facing the combustion chamber is formed by a component in the form of a lining part 16 whose shape and specific embodiment will be explained in more detail below.
  • the lining part 16 is inseparably connected to or carried by a piston main body 18, which in turn has on its side facing away from the piston surface 12 and the combustion chamber 14 a non-recognizable piston pin bearing for connecting the piston with an associated connecting rod.
  • the lining part 16 is adapted to the increasing thermal and mechanical stresses.
  • formed as a piston cup lining part 16 is a thermal and possibly also chemical and material engineering Annealing process has been suspended, which leads to an adapted and possibly very fine structure with the highest strength.
  • the lining part 16 is made in the present embodiments, due to the desirable same thermal expansion almost from the same base material or from the same base alloy as the piston body 18.
  • the lining part 16 is cast in the present embodiments in the casting process of the piston main body 18 directly or molded.
  • the covering part 16 has connecting means 22, which in the embodiment according to FIG. 1 form a surface structure 24.
  • the covering part 16 at the connecting surface to the piston main body 18 has a very high accessible surface, for example, by the surface structure 24 or by a specific porosity.
  • a further connection means 22 is provided in the form of a central anchorage 26 which is provided in the region of the central axis m of the piston and via the casting process to a positive connection between the lining part 16 and the piston body 18 ,
  • a region 28, in which a piston ring groove 30 of the piston is formed is additionally used as connecting means.
  • Fig. 2 shows an embodiment in which an outer peripheral side of the piston or piston crown at least partially - namely over a certain height - is formed by the lining part 16.
  • the formed as a piston cup Covering part 16 over a predominant area has a shell thickness S, which is based on a piston diameter D according to the formula 1% ⁇ S / D ⁇ 10%. This usually results in a shell thickness S of the lining part 16 of less than one millimeter to more than 10 millimeters in the present interest car or truck pistons. It can also be seen from FIGS. 1 to 3 that the shell thickness S of the covering part 16 is provided at least where not directly a connecting means 22 for connection to the piston main body 18 or a radius or corner region is arranged. It can also be seen from FIGS. 1 to 3 that the covering part 16 is not flat, but at least one combustion recess 32 is formed, inter alia.
  • the lining part 16 is thus initially produced.
  • the production of the shells or lining parts, which may extend into the piston eye, z. B. also take place with a lost wax process, in which the lining parts 16 are manufactured as precision castings with little Nachbearbeitungsaufwand.

Landscapes

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

Abstract

L'invention concerne un piston pour un moteur à combustion interne comprenant un corps de base de piston (18) qui est connecté de manière imperdable à un autre composant (16) tourné vers une chambre de combustion (14) associée. L'autre composant est réalisé sous forme de partie formant garniture (16) qui forme entièrement la surface (12) du piston tournée vers la chambre de combustion (14).
PCT/EP2008/004653 2007-06-22 2008-06-11 Piston pour un moteur à combustion interne et procédé pour sa fabrication Ceased WO2009000420A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200710029307 DE102007029307A1 (de) 2007-06-22 2007-06-22 Kolben für eine Brennkraftmaschine und Verfahren zu dessen Herstellung
DE102007029307.2 2007-06-22

Publications (1)

Publication Number Publication Date
WO2009000420A1 true WO2009000420A1 (fr) 2008-12-31

Family

ID=39744874

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/004653 Ceased WO2009000420A1 (fr) 2007-06-22 2008-06-11 Piston pour un moteur à combustion interne et procédé pour sa fabrication

Country Status (2)

Country Link
DE (1) DE102007029307A1 (fr)
WO (1) WO2009000420A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102441656A (zh) * 2010-10-06 2012-05-09 通用汽车环球科技运作有限责任公司 带有双金属圆顶的柴油机活塞
CN102787937A (zh) * 2011-05-19 2012-11-21 通用汽车环球科技运作有限责任公司 带有双金属圆顶的活塞
US8813357B2 (en) 2010-10-06 2014-08-26 GM Global Technology Operations LLC Piston with bi-metallic dome
US10578049B2 (en) 2017-04-28 2020-03-03 Mahle International Gmbh Thermal barrier coating for engine combustion component

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010051681B4 (de) 2010-11-17 2019-09-12 Daimler Ag Verfahren zur Herstellung eines Kühlkanalkolbens
DE102011107775A1 (de) * 2011-07-15 2013-01-17 Mahle International Gmbh Kolben für einen Verbrennungsmotor
DE102012009029A1 (de) * 2012-05-05 2013-11-07 Mahle International Gmbh Kolben für einen Verbrennungsmotor

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0427389A1 (fr) * 1989-11-06 1991-05-15 Dana Corporation Procédé de traitement d'un élément ferreux pour un assemblage métallurgique ultérieur avec de l'aluminiun coulé
JPH04183959A (ja) * 1990-11-16 1992-06-30 Mitsubishi Alum Co Ltd ディーゼルエンジン用ピストンの製造方法
JPH04311654A (ja) * 1991-04-11 1992-11-04 Nissan Motor Co Ltd 内燃機関のピストン構造
DE19813430A1 (de) * 1997-03-29 1998-11-05 Alcan Gmbh Verbundgußkolben und Verfahren zu seiner Herstellung
US20030209288A1 (en) * 2002-05-07 2003-11-13 Xiaodi Huang Method for manufacturing clad components
DE102005006879A1 (de) * 2005-02-14 2006-08-17 LAUKÖTTER, Karl-Heinz Kolben für Arbeits- oder Kraftmaschinen

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030128159A1 (en) 2002-01-10 2003-07-10 De La Chapelle Michael 1-D electronic scanned satellite user terminal antenna
EP1386687B2 (fr) 2002-07-30 2015-02-25 Federal-Mogul Nürnberg GmbH Piston et sa méthode de fabrication
DE10244513A1 (de) 2002-09-25 2004-04-08 Mahle Gmbh Mehrteiliger gekühlter Kolben für einen Verbrennungsmotor und Verfahren zu dessen Herstellung

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0427389A1 (fr) * 1989-11-06 1991-05-15 Dana Corporation Procédé de traitement d'un élément ferreux pour un assemblage métallurgique ultérieur avec de l'aluminiun coulé
JPH04183959A (ja) * 1990-11-16 1992-06-30 Mitsubishi Alum Co Ltd ディーゼルエンジン用ピストンの製造方法
JPH04311654A (ja) * 1991-04-11 1992-11-04 Nissan Motor Co Ltd 内燃機関のピストン構造
DE19813430A1 (de) * 1997-03-29 1998-11-05 Alcan Gmbh Verbundgußkolben und Verfahren zu seiner Herstellung
US20030209288A1 (en) * 2002-05-07 2003-11-13 Xiaodi Huang Method for manufacturing clad components
DE102005006879A1 (de) * 2005-02-14 2006-08-17 LAUKÖTTER, Karl-Heinz Kolben für Arbeits- oder Kraftmaschinen

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102441656A (zh) * 2010-10-06 2012-05-09 通用汽车环球科技运作有限责任公司 带有双金属圆顶的柴油机活塞
US8763247B2 (en) 2010-10-06 2014-07-01 GM Global Technology Operations LLC Diesel piston with bi-metallic dome
US8813357B2 (en) 2010-10-06 2014-08-26 GM Global Technology Operations LLC Piston with bi-metallic dome
CN102787937A (zh) * 2011-05-19 2012-11-21 通用汽车环球科技运作有限责任公司 带有双金属圆顶的活塞
US10578049B2 (en) 2017-04-28 2020-03-03 Mahle International Gmbh Thermal barrier coating for engine combustion component

Also Published As

Publication number Publication date
DE102007029307A1 (de) 2008-12-24

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