EP0804680B1 - Tete forgee ou coulee d'un piston a plusieurs parties - Google Patents

Tete forgee ou coulee d'un piston a plusieurs parties Download PDF

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Publication number
EP0804680B1
EP0804680B1 EP96900584A EP96900584A EP0804680B1 EP 0804680 B1 EP0804680 B1 EP 0804680B1 EP 96900584 A EP96900584 A EP 96900584A EP 96900584 A EP96900584 A EP 96900584A EP 0804680 B1 EP0804680 B1 EP 0804680B1
Authority
EP
European Patent Office
Prior art keywords
piston
ring
ring section
piston head
cast iron
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
EP96900584A
Other languages
German (de)
English (en)
Other versions
EP0804680A1 (fr
Inventor
Siegfried Mielke
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.)
KS Kolbenschmidt GmbH
Original Assignee
KS Kolbenschmidt 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
Application filed by KS Kolbenschmidt GmbH filed Critical KS Kolbenschmidt GmbH
Publication of EP0804680A1 publication Critical patent/EP0804680A1/fr
Application granted granted Critical
Publication of EP0804680B1 publication Critical patent/EP0804680B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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 
    • F02F3/0015—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 
    • F02F3/0015—Multi-part pistons
    • F02F3/003—Multi-part pistons the parts being connected by casting, brazing, welding or clamping
    • F02F2003/0061—Multi-part pistons the parts being connected by casting, brazing, welding or clamping by welding
    • 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
    • F02F2200/00—Manufacturing
    • F02F2200/04—Forging of engine parts
    • 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
    • F05C2201/02—Light metals
    • F05C2201/021—Aluminium
    • 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
    • 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
    • F05C2203/00—Non-metallic inorganic materials
    • F05C2203/08—Ceramics; Oxides
    • F05C2203/0865—Oxide ceramics
    • F05C2203/0882—Carbon, e.g. graphite

Definitions

  • the invention relates to a forged or cast Piston head of a pendulum shaft piston for Internal combustion engines in which the piston crown faces radially outside in the ring section having the piston ring grooves merges with the underside of the Piston plate integrally connected supports at a distance from the Are attached to the inside of the ring section and in the Pin eye bores a piston pin carrying the piston skirt is storable.
  • a built-in piston is known from EP-A-0 019 323, at the upper piston part and lower piston part via collar-like Supports lie on top of each other and in the area of the divided Ringfelds are welded together.
  • FIG. 1 shows a cross section through a piston head for a multi-part piston for diesel engines along the Piston pin axis and plane including the piston axis, consisting of a one-piece forged from steel Combustion chamber trough (1) having a piston crown (2), radially after it the top ring groove adjoining the piston crown (2) on the outside having the upper part of the ring portion (3) and with Place the distance from the inside of the ring section (3) bearing the hubs (4) with the underside of the piston crown (2) connected supports (5).
  • the lower part (6) of the Ring section (3) consists of austenitic special cast iron or steel and is with the upper part over a weld seam (7) connected.
  • Bearing bushes (9) are in the pin hub bores (8) used.
  • FIG. 2 is a cross section through a piston head along the the piston pin axis and the plane including the piston axis shown for a piston in a multi-part design, in which the piston crown (10), the hubs (11), in their bores (12) Bearing bushes (13) are inserted, and the hubs (11) load-bearing supports (14) are forged in one piece from steel.
  • the one made separately from austenitic cast iron Ring section (15) is over a weld (16) with the Piston plate (10) connected.
  • FIG. 3 shows a further embodiment of the piston head Fig. 1 shown.
  • annulus located annulus is above the including the lower groove flank of the second ring groove horizontal plane an annular cross section trough-shaped sheet metal part (41) for forming a cooling channel (42) arranged.

Landscapes

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

Abstract

L'invention concerne une tête d'un piston à plusieurs parties, destiné à des moteurs à combustion interne. Le fond du piston fait saillie dans le sens radial vers l'extérieur dans la partie annulaire présentant les gorges des segments de piston. Les supports de moyeu sont placés à distance de la face intérieure de la partie annulaire et l'axe de piston comportant la tige de piston peut être placé dans les alésages d'axe. Il est possible d'améliorer la fabrication de la tête de piston en raccordant la partie annulaire au fond du piston, au moyen d'un assemblage par soudage, brasage, friction ou liaison de forme.

Claims (4)

  1. Tête forgée ou coulée d'un piston à jupe oscillante pour machines à combustion interne, dans laquelle le fond de piston (2, 10) se prolonge radialement vers l'extérieur en l'élément de logement des segments (3, 15) présentant les gorges de segment de piston, et dans lequel les appuis (5, 14) portant les bossages d'axe (4, 11) et reliés monobloc à la face inférieure du fond de piston sont rapportés à distance de la face interne de l'élément de logement des segments, et dans lequel un axe de piston portant la jupe de piston peut être logé dans l'alésage du bossage d'axe du piston (8, 12), caractérisée en ce que l'élément de logement des segments (3, 15) ou une partie inférieure (6) de l'élément de logement des segments (3) est relié(e) au fond de piston (2, 10) ou à une partie supérieure de l'élément de logement des segments (3) par un assemblage par soudage, brasage, assemblage à force ou par crabotage.
  2. Tête de piston selon la revendication 1, caractérisée en ce que le fond de piston est en acier, de préférence en acier de traitement et acier de forge, fonte de fer, de préférence de la fonte de fer à graphite sphéroïdal, fonte malléable ou un matériau à base d'aluminure, en particulier TiAl3 et Ni3Al, et en ce que l'élément de logement des segments est en un alliage d'aluminium pour piston, en fonte spéciale austénitique ou en un des matériaux du fond de piston.
  3. Tête de piston melon la revendication 1 ou 2, caractérisée en ce que dans l'espace annulaire situé derrière la face interne de l'élément de logement des segments (3), une tôle (41) en anneau de cercle plane ou de section en forme d'auge est agencée au-dessus d'un plan horizontal comprenant le flanc de gorge inférieur de la seconde gorge de segment pour délimiter un canal de refroidissement (42) et est reliée intimement avec le cordon de soudure ou la brasure (7).
  4. Tête de piston selon la revendication 3, caractérisée en ce que le diamètre intérieur du canal de refroidissement de part et d'autre d'un plan horizontal s'étendant au-dessus de la seconde gorge de segment est supérieur d'au moins 0,2 mm au diamètre à l'endroit le plus étroit du canal de refroidissement.
EP96900584A 1995-01-19 1996-01-16 Tete forgee ou coulee d'un piston a plusieurs parties Expired - Lifetime EP0804680B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19501416 1995-01-19
DE19501416A DE19501416A1 (de) 1995-01-19 1995-01-19 Geschmiedeter oder gegossener Kolbenkopf eines mehrteiligen Kolbens
PCT/EP1996/000145 WO1996022459A1 (fr) 1995-01-19 1996-01-16 Tete forgee ou coulee d'un piston a plusieurs parties

Publications (2)

Publication Number Publication Date
EP0804680A1 EP0804680A1 (fr) 1997-11-05
EP0804680B1 true EP0804680B1 (fr) 2000-04-12

Family

ID=7751782

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96900584A Expired - Lifetime EP0804680B1 (fr) 1995-01-19 1996-01-16 Tete forgee ou coulee d'un piston a plusieurs parties

Country Status (4)

Country Link
US (1) US5778846A (fr)
EP (1) EP0804680B1 (fr)
DE (2) DE19501416A1 (fr)
WO (1) WO1996022459A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10040486A1 (de) * 2000-08-18 2002-03-07 Ks Kolbenschmidt Gmbh Stahlkolben

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US6260472B1 (en) * 1998-07-28 2001-07-17 Federal-Mogul World Wide, Inc. One-piece integral skirt piston and method of making the same
DE19839226A1 (de) * 1998-08-28 2000-03-02 Peter Pelz Kolben, insbesondere für einen Verbrennungsmotor mit Doppelkurbeltrieb
US6279455B1 (en) 1998-10-06 2001-08-28 Caterpillar Inc. Method and apparatus for making a two piece unitary piston
DE19846152A1 (de) * 1998-10-07 2000-04-13 Mahle Gmbh Kolben mit Kolbengrundkörper aus geschmiedetem Stahl und einem Kühlkanal
DE19926568A1 (de) * 1999-06-11 2000-12-14 Mahle Gmbh Gekühlter Kolben für Verbrennungsmotoren
US6286414B1 (en) 1999-08-16 2001-09-11 Caterpillar Inc. Compact one piece cooled piston and method
US6223701B1 (en) 1999-08-16 2001-05-01 Caterpillar Inc. Cooled one piece piston and method
US6327962B1 (en) 1999-08-16 2001-12-11 Caterpillar Inc. One piece piston with supporting piston skirt
US6318243B1 (en) 1999-08-31 2001-11-20 D. Kent Jones Two-piece piston assembly
DE19943945A1 (de) 1999-09-14 2001-03-22 Federal Mogul Wiesbaden Gmbh Kolbenkopf
WO2001050042A1 (fr) 1999-12-30 2001-07-12 Federal-Mogul Corporation Piston a jupe decouplee
DE10221561A1 (de) * 2002-05-15 2004-01-08 Mahle Gmbh Gekühlter Kolben für einen Verbrennungsmotor
US6703577B2 (en) * 2002-06-10 2004-03-09 Sauer-Danfoss Inc. Method of making closed cavity pistons
US8276563B2 (en) * 2002-06-28 2012-10-02 Cummins, Inc. Internal combustion engine piston
DE10244513A1 (de) * 2002-09-25 2004-04-08 Mahle Gmbh Mehrteiliger gekühlter Kolben für einen Verbrennungsmotor und Verfahren zu dessen Herstellung
ATE413936T1 (de) * 2003-03-01 2008-11-15 Ks Kolbenschmidt Gmbh Herstellungsverfahren für einen kühlkanalkolben mit umformbarem bund
FR2854089B1 (fr) * 2003-04-23 2006-05-19 Semt Pielstick Procede de fabrication d'un piston, outillage pour la mise en oeuvre de ce procede et piston ainsi obtenu
US6892690B2 (en) * 2003-10-06 2005-05-17 Mahle Gmbh Cooling channel cover for a one-piece piston of an internal combustion engine
US6820582B1 (en) * 2003-10-06 2004-11-23 Mahle Gmbh Cooling channel cover for a one-piece piston of an internal combustion engine
US6920860B2 (en) * 2003-10-06 2005-07-26 Mahle Gmbh Cooling channel cover for a one-piece piston of an internal combustion engine
US7438039B2 (en) * 2004-02-06 2008-10-21 Electro-Motive Diesel, Inc. Large-bore, medium-speed diesel engine having piston crown bowl with acute re-entrant angle
DE102004031513A1 (de) * 2004-06-30 2006-01-26 Ks Kolbenschmidt Gmbh Verfahren zur Herstellung eines Kühlkanalkolbens für eine Brennkraftmaschine
DE102008038325A1 (de) 2007-12-20 2009-06-25 Mahle International Gmbh Verfahren zum Befestigen eines Ringelementes auf einem Kolben für einen Verbrennungsmotor
US8347842B2 (en) * 2008-02-19 2013-01-08 Federal-Mogul Corporation Coolable piston for internal combustion engine
US7762227B2 (en) * 2008-02-19 2010-07-27 Federal Mogul Corporation Coolable piston for internal combustion engine
DE102011013067A1 (de) 2011-03-04 2012-09-06 Mahle International Gmbh Verfahren zur Herstellung eines Kolbens für einen Verbrennungsmotor
DE102011013141A1 (de) 2011-03-04 2012-09-06 Mahle International Gmbh Verfahren zur Herstellung eines Kolbens für einen Verbrennungsmotor
JP2015511676A (ja) * 2012-03-12 2015-04-20 フェデラル−モーグル コーポレイション エンジンピストン
DE102012014193A1 (de) * 2012-07-18 2014-05-15 Mahle International Gmbh Kolben für einen Verbrennungsmotor
DE102013014344A1 (de) * 2013-03-18 2014-10-02 Mahle International Gmbh Verfahren zur Herstellung eines Kolbens für einen Verbrennungsmotor und mittels dieses Verfahrens hergestellter Kolben
US10591059B2 (en) * 2018-06-05 2020-03-17 Mahle International Gmbh Piston with cooling oil diverter

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10040486A1 (de) * 2000-08-18 2002-03-07 Ks Kolbenschmidt Gmbh Stahlkolben
EP1180592A3 (fr) * 2000-08-18 2002-09-11 KS Kolbenschmidt GmbH Piston en acier
DE10040486C2 (de) * 2000-08-18 2002-10-31 Ks Kolbenschmidt Gmbh Stahlkolben

Also Published As

Publication number Publication date
EP0804680A1 (fr) 1997-11-05
DE59604960D1 (de) 2000-05-18
US5778846A (en) 1998-07-14
DE19501416A1 (de) 1996-07-25
WO1996022459A1 (fr) 1996-07-25

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