EP0334855A1 - Piston-fourreau refroidissable pour moteurs a combustion interne. - Google Patents

Piston-fourreau refroidissable pour moteurs a combustion interne.

Info

Publication number
EP0334855A1
EP0334855A1 EP87907219A EP87907219A EP0334855A1 EP 0334855 A1 EP0334855 A1 EP 0334855A1 EP 87907219 A EP87907219 A EP 87907219A EP 87907219 A EP87907219 A EP 87907219A EP 0334855 A1 EP0334855 A1 EP 0334855A1
Authority
EP
European Patent Office
Prior art keywords
piston
wall
plunger
ring
sheet metal
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.)
Granted
Application number
EP87907219A
Other languages
German (de)
English (en)
Other versions
EP0334855B1 (fr
Inventor
Eberhard Kopf
Joachim Wille
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
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 Mahle GmbH filed Critical Mahle GmbH
Publication of EP0334855A1 publication Critical patent/EP0334855A1/fr
Application granted granted Critical
Publication of EP0334855B1 publication Critical patent/EP0334855B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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 
    • F02F3/0015—Multi-part pistons
    • F02F3/0069—Multi-part pistons the crown and skirt being interconnected by the gudgeon pin
    • 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
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00—Pressure lubrication
    • F01M1/08—Lubricating systems characterised by the provision therein of lubricant jetting means
    • F01M2001/086—Lubricating systems characterised by the provision therein of lubricant jetting means for lubricating gudgeon pins
    • 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

Definitions

  • the invention relates to a coolable plunger for internal combustion engines according to the preamble of claim 1.
  • Such pistons are known from US-PS 43 77 967.
  • the wall part (shaped sheet) used there to cover the cavity forming the cooling oil chamber is crimped onto the outer circumference of the ring wall carrying the piston rings. This type of fastening is unsafe because flanging of the relatively thin-walled wall part can become detached in the long term in motor operation.
  • the collar protruding beyond the ring wall, which is flanged around the wall part, can be made much thicker than the wall part itself and thus provide a more stable flared connection.
  • the wall part can be radially divided over its circumference according to claim 2.
  • a support ribs which are tight against the hubs or connect them to the base of the piston head cannot be reached to the wall part.
  • Fig. 1 shows a piston in longitudinal section
  • Fig. 2 shows a section through the piston according to the arrows II - II
  • FIG. 3 shows a detail from a longitudinal section through a piston with a welded-on cover wall
  • the piston consists overall of a head part 1. At its hubs 2, a piston shaft 3 is articulated via a piston pin (not shown). An outer ring wall 4 containing the grooves for the piston rings extends from the bottom of the head part 1. Radially at a distance within the ring wall 4, an annular rib 5 connects the hubs 2 to the piston crown. Between the annular rib 5 and the annular wall 4 there is an annular cavity 6, which is covered by a sheet metal part 7, which has the shape of an annular recess, to form a closed annular space. The cavity 6 can be acted upon by cooling oil through the sheet metal part 7.
  • the sheet metal part 7 rests against the inner edge of the free end ring surface of the ring wall 4 and is held there by a collar 8 which flanges radially inwards and extends from the outer edge of the ring wall.
  • the sheet metal part 7 is separated radially into two halves. These halves abut each other on joints 9.
  • the oil is fed into the annular cavity 6 through an indentation 10 provided on the inner edge of the sheet metal part 7.
  • the oil is discharged through a diametrically opposed opening 11 which can lie in the bottom of the annular trough of the sheet metal part 7.
  • the opening 11 can, however, also be provided as an indentation on the inner edge of the sheet metal part 7 and thus correspond to the design of the oil supply opening.
  • the annular rib contains pe 5 radial bores 12. In order to achieve a shaker effect in the space 13 lying radially inside the annular rib 5, this is covered at its open end facing the connecting rod head with an additional trough-shaped sheet metal part 14. The oil drain from this space can follow the gap between this sheet metal part 14 and the annular rib 5 or the hubs 2.
  • the sheet metal part 7 covering the outer annular cavity 6 can also be fastened to the outer ring wall 4 by welding or screwing instead of by flanging.
  • a weld is shown in Fig. 3 and a screw in Fig. 4.

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)

Abstract

Dans un piston en deux parties comportant une tête (1) et un fourreau (3) articulé seulement sur l'axe de piston, qui sont censésrecouvrir un espace annulaire (6) situé dans la rainure annulaire du piston concentriquement par rapport à celui-ci, espace ouvert dans la direction du fourreau (3) et comportant une partie en tôle (7) délimitant un canal de refroidissement à l'huile. Dans la forme d'exécution connue, la partie en tôle (7) est sertie dans la paroi (4) de l'espace annulaire qui porte les segments du piston. En raison de la minceur de la tôle (7), on n'est pas sûr que ce mode de fixation résiste quand le piston fonctionne longtemps. En outre, on s'efforce d'obturer le plus possible l'espace annulaire (6) dans lequel circule l'huile de refroidissement. L'invention consiste à fixer la partie en tôle (7) par un collier (8) qui part de la paroi externe annulaire (4) de la tête (1) et est serti autour de la tôle (7). Pour que l'espace annulaire (6) soit suffisamment obturé, la partie en tôle (7) est divisée en deux parties dans le sens radial.
EP87907219A 1986-12-17 1987-10-24 Piston-fourreau refroidissable pour moteurs a combustion interne Expired - Lifetime EP0334855B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3643039 1986-12-17
DE19863643039 DE3643039A1 (de) 1986-12-17 1986-12-17 Kuehlbarer tauchkolben fuer verbrennungsmotoren

Publications (2)

Publication Number Publication Date
EP0334855A1 true EP0334855A1 (fr) 1989-10-04
EP0334855B1 EP0334855B1 (fr) 1990-08-08

Family

ID=6316366

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87907219A Expired - Lifetime EP0334855B1 (fr) 1986-12-17 1987-10-24 Piston-fourreau refroidissable pour moteurs a combustion interne

Country Status (6)

Country Link
US (1) US5052280A (fr)
EP (1) EP0334855B1 (fr)
JP (1) JPH02501153A (fr)
BR (1) BR8707917A (fr)
DE (2) DE3643039A1 (fr)
WO (1) WO1988004725A1 (fr)

Families Citing this family (60)

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US4867119A (en) * 1988-10-21 1989-09-19 Caterpillar Inc. Engine piston assembly and forged piston member therefor having a cooling recess
IN175093B (fr) * 1988-10-21 1995-04-29 Caterpillar Inc
BR8807857A (pt) * 1988-10-21 1990-11-13 Caterpillar Inc Motor que inclui um pistao que tem uma ranhura para anel superior alta
US4986167A (en) * 1989-05-25 1991-01-22 Caterpillar Inc. Articulated piston with a cooling recess having a preestablished volume therein
DE3919872A1 (de) * 1989-06-19 1990-12-20 Mahle Gmbh Tauchkolben fuer verbrennungsmotoren mit einem kuehloeldurchfluteten kolbenkopf
BR9001916A (pt) * 1990-04-20 1991-11-12 Metal Leve Sa Processo de obtencao de embolo refrigerado e embolo refrigerado
BR9005371A (pt) * 1990-10-18 1992-06-16 Metal Leve Sa Processo de fabricacao de embolo com galeria de refrigeracao
BR9005376A (pt) * 1990-10-18 1992-06-16 Metal Leve Sa Embolo bipartido com fechamento postico de galeria e processo para sua obtencao
DE4039751A1 (de) * 1990-12-13 1992-06-17 Mahle Gmbh Mehrteililger, gekuehlter kolben fuer verbrennungsmotoren
DE4039752A1 (de) * 1990-12-13 1992-06-17 Mahle Gmbh Mehrteiliger, gekuehlter kolben fuer verbrennungsmotoren
DE4039754A1 (de) * 1990-12-13 1992-06-17 Mahle Gmbh Mehrteiliger, gekuehlter kolben fuer verbrennungsmotoren
US5357920A (en) * 1990-12-13 1994-10-25 Mahle Gmbh Cooled multi-component piston for internal combustion engines
DE4124634A1 (de) * 1991-07-25 1993-01-28 Mahle Gmbh Mehrteiliger, gekuehlter kolben fuer verbrennungsmotoren
DE4208037C2 (de) * 1992-03-13 1998-03-26 Mahle Gmbh Mehrteiliger, gekühlter Kolben für Verbrennungsmotoren
DE4342044B4 (de) * 1993-12-09 2006-08-31 Mahle Gmbh Kolben für einen Verbrennungsmotor
DE4430137B4 (de) * 1994-08-25 2004-07-22 Mahle Gmbh Mehrteiliger, gekühlter Kolben für Verbrennungsmotoren
DE4446726A1 (de) * 1994-12-24 1996-06-27 Mahle Gmbh Verfahren zur Herstellung eines einteiligen Kühlkanalkolbens
DE19720958B4 (de) * 1997-05-17 2007-07-26 Mahle Gmbh Mehrteiliger, gekühlter Kolben für Verbrennungsmotoren
DE19747944A1 (de) 1997-10-30 1999-05-06 Mahle Gmbh Kolben mit zentralem Kühlraum
DE19846496A1 (de) * 1998-10-09 2000-04-13 Mahle Gmbh Kolben für einen Verbrennungsmotor
GB9909033D0 (en) * 1999-04-19 1999-06-16 Seneca Tech Ltd Piston coolant path
US6286414B1 (en) * 1999-08-16 2001-09-11 Caterpillar Inc. Compact one piece cooled piston and method
US6327962B1 (en) * 1999-08-16 2001-12-11 Caterpillar Inc. One piece piston with supporting piston skirt
DE10040486C2 (de) * 2000-08-18 2002-10-31 Ks Kolbenschmidt Gmbh Stahlkolben
US6494170B2 (en) * 2000-12-01 2002-12-17 Caterpillar Inc Two-piece piston assembly with skirt having pin bore oil ducts
US6499387B2 (en) 2001-03-06 2002-12-31 Federal-Mogul World Wide, Inc. Unified multi-piece piston and method of manufacture
DE10110889C1 (de) * 2001-03-07 2002-10-02 Ks Kolbenschmidt Gmbh Verfahren zur Herstellung eines Kühlkanalkolbens, sowie ein nach dem Verfahren hergestellter Kühlkanalkolben
US6487773B2 (en) 2001-03-23 2002-12-03 Mahle Gmbh Method of making one-piece piston
US6609485B2 (en) * 2001-03-29 2003-08-26 International Engine Intellectual Property Company, Llc Piston pin bushing cooler
US6491013B1 (en) 2001-09-19 2002-12-10 Federal-Mogul World Wide, Inc. Closed gallery piston having reinforced oil hole
US6513477B1 (en) 2001-09-19 2003-02-04 Federal-Mogul World Wide, Inc. Closed gallery piston having pin bore lubrication
US6539910B1 (en) 2001-09-19 2003-04-01 Federal-Mogul World Wide, Inc. Closed gallery piston having con rod lubrication
US6532913B1 (en) * 2001-11-27 2003-03-18 Caterpillar Inc Piston cooling fin
DE10301367A1 (de) * 2003-01-16 2004-07-29 Mahle Gmbh Verfahren zum Einbringen von Shakerbohrungen in den Kühlkanal eines einteiligen Kolbens
ATE413936T1 (de) 2003-03-01 2008-11-15 Ks Kolbenschmidt Gmbh Herstellungsverfahren für einen kühlkanalkolben mit umformbarem bund
US6820582B1 (en) * 2003-10-06 2004-11-23 Mahle Gmbh Cooling channel cover for a one-piece piston of an internal combustion engine
US6938604B2 (en) * 2003-10-06 2005-09-06 Mahle Gmbh Cooling channel cover for a one-piece piston of an internal combustion engine
US6892690B2 (en) * 2003-10-06 2005-05-17 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
DE10346819A1 (de) 2003-10-06 2005-04-21 Mahle Gmbh Einteiliger Kolben für einen Verbrennungsmotor
DE102004031513A1 (de) 2004-06-30 2006-01-26 Ks Kolbenschmidt Gmbh Verfahren zur Herstellung eines Kühlkanalkolbens für eine Brennkraftmaschine
DE102004057284A1 (de) * 2004-11-26 2006-06-14 Fev Motorentechnik Gmbh Leichtbaukolben für thermisch hochbelastete Kolben
US20070074695A1 (en) * 2005-10-04 2007-04-05 Mahle Technology, Inc. Piston having improved cooling characteristics
US7162990B1 (en) * 2005-12-29 2007-01-16 Mahle Technology, Inc. Two-part piston for an internal combustion engine
JP4333693B2 (ja) * 2006-05-22 2009-09-16 トヨタ自動車株式会社 内燃機関用ピストンおよび内燃機関
DE102006030699B4 (de) 2006-06-30 2014-10-02 Daimler Ag Gegossener Stahlkolben für Verbrennungsmotoren
US7762227B2 (en) * 2008-02-19 2010-07-27 Federal Mogul Corporation Coolable piston for internal combustion engine
US8347842B2 (en) * 2008-02-19 2013-01-08 Federal-Mogul Corporation Coolable piston for internal combustion engine
DE102008055908A1 (de) * 2008-11-05 2010-05-06 Mahle International Gmbh Mehrteiliger Kolben für einen Verbrennungsmotor
DE102008055911A1 (de) * 2008-11-05 2010-05-06 Mahle International Gmbh Mehrteiliger Kolben für einen Verbrennungsmotor sowie Verfahren zu seiner Herstellung
DE102008055909A1 (de) * 2008-11-05 2010-05-06 Mahle International Gmbh Mehrteiliger Kolben für einen Verbrennungsmotor
DE102008062219A1 (de) * 2008-12-13 2010-06-17 Mahle International Gmbh Kolben für einen Verbrennungsmotor
DE102011013113A1 (de) * 2011-03-04 2012-09-06 Mahle International Gmbh Kolben für einen Verbrennungsmotor und Verfahren zu seiner Herstellung
DE102012014195A1 (de) * 2012-07-18 2014-01-23 Mahle International Gmbh Kolben für einen Verbrennungsmotor
RU2533265C2 (ru) * 2013-01-09 2014-11-20 Общество с ограниченной ответственностью "Краснодарский Компрессорный Завод" Дисковый литой поршень компрессора
US9291119B2 (en) 2013-03-14 2016-03-22 Mahle International Gmbh Piston assembly with preloaded support surfaces
US9797337B2 (en) * 2015-07-10 2017-10-24 Mahle International Gmbh Oil-cooled piston for an internal combustion engine
US10316790B2 (en) 2016-09-27 2019-06-11 TennecoInc. Piston ring-belt structural reinforcement via additive machining
DE102016225632A1 (de) * 2016-12-20 2018-06-21 Mahle International Gmbh Kolben einer Brennkraftmaschine
US11248557B1 (en) * 2020-12-03 2022-02-15 Caterpillar Inc. Piston having oil gallery drain outlets biased in distribution to anti-thrust side

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Also Published As

Publication number Publication date
JPH02501153A (ja) 1990-04-19
BR8707917A (pt) 1989-10-31
DE3764275D1 (de) 1990-09-13
US5052280A (en) 1991-10-01
EP0334855B1 (fr) 1990-08-08
DE3643039A1 (de) 1988-06-30
WO1988004725A1 (fr) 1988-06-30

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