EP1185774A1 - Piston refroidi pour moteurs a combustion interne - Google Patents

Piston refroidi pour moteurs a combustion interne

Info

Publication number
EP1185774A1
EP1185774A1 EP00936631A EP00936631A EP1185774A1 EP 1185774 A1 EP1185774 A1 EP 1185774A1 EP 00936631 A EP00936631 A EP 00936631A EP 00936631 A EP00936631 A EP 00936631A EP 1185774 A1 EP1185774 A1 EP 1185774A1
Authority
EP
European Patent Office
Prior art keywords
piston
wall part
cooling channel
cooled
transverse walls
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
EP00936631A
Other languages
German (de)
English (en)
Other versions
EP1185774B1 (fr
Inventor
Wolfgang Issler
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 EP1185774A1 publication Critical patent/EP1185774A1/fr
Application granted granted Critical
Publication of EP1185774B1 publication Critical patent/EP1185774B1/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 
    • F02F3/16—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

Definitions

  • the invention relates to a cooled piston for internal combustion engines with the features according to the preamble of claim 1.
  • Such pistons are known from DD 252 638 AI and DE 41 34 530 AI, in which the wall part serving to cover the downwardly open annular cooling channel is designed as an open sheet metal ring which, using its elastic deformation according to the Seeger ring Principle, ie under prestress in the radial direction, in a groove on the inner circumference of the piston ring zone or on the outer circumference of the combustion chamber wall.
  • a piston head part is known from DE 42 08 037 C2, in which the cooling channel, which is open at the bottom, is covered by a radially fixed tensioned disk spring which is divided at least in two parts on its circumference and which bears freely on supports radially on the inside and outside on axially opposite sides.
  • a piston with a cooling channel in the piston head in which a baffle plate covering the lower open end of the cooling channel is provided, the ends of which are bent vertically upwards in the area of the division by a certain level of cooling oil in the cooling channel to keep .
  • a disadvantage of the above explanations is that the dwell time of the cooling oil in the cooling channel is not satisfactorily solved to the desired extent.
  • the invention is therefore based on the object of extending the dwell time of the cooling oil in the cooling channel and of intensifying the shaker effect of the cooling oil in order to achieve better heat dissipation of the piston regions to be cooled.
  • FIG. 2 is a bottom view of FIG. 1, left half after section II-II, right half after section III-III,
  • FIG. 3 is an enlarged view of view X of FIG. 1,
  • Fig. 5 is a partial view of the wall part after the forming
  • FIG. 6 is a partial view of a further embodiment of the wall part before forming (processing)
  • Fig. 7 is a partial view of a wall part with a supply opening for the cooling oil
  • FIG. 8 is a side view of FIG .. 7
  • Fig. 9 is a partial view of another embodiment according to section IX-IX
  • FIG. 10 is a plan view according to FIG. 9.
  • a cooled piston consists of a piston head 1 and a piston shaft (not shown) which is articulated to the piston head via a piston pin (not shown).
  • an annular circumferential cooling channel 2 is provided, which is closed at its end open to the piston skirt by a wall part 3, for example a two-part disc spring or two sheet metal strip halves 4, 5.
  • the wall part 3 should be distributed over its circumference with a plurality of radially arranged transverse walls 6 extending axially into the cooling channel 2, whereby certain shaker rooms are formed.
  • the wall part 3 is mounted in the piston head 1 in a manner known per se, for example by providing a support 7 for the inner circumference and a corresponding collar-like recess 8 for the outer circumference of the wall part 3.
  • the wall part 3 is by radial divisions 9, 10 divided into two sheet metal strip halves 4, 5, which form the lower end of the cooling channel 2 in a prestressed manner.
  • For the supply of cooling oil in the first sheet metal strip half 4 from the wall part 3 two sections 11, 12 bent obliquely upward so that the cooling oil jet is divided and approximately half enters the cooling channel 2 in the opposite direction. The oil flow then runs circumferentially in the cooling channel and is discharged again through a discharge opening 13 provided in the second metal strip half 5.
  • the transverse walls 6 of the wall part 3 can be produced in a simple manner by reshaping.
  • an annular, punched-out flat wall part 3 or a straight flat wall part 3 can be assumed, the folding 14 having to be carried out in the case of the straight exit strip such that an annular wall part 3 is subsequently present.
  • a recess 16 is formed in the flat region 15 of the wall part 3 by reshaping in the direction of the piston skirt in order to enlarge the Shaker rough.

Landscapes

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

Abstract

L'invention concerne un piston pour moteurs à combustion interne dont la tête (1) contient un conduit de refroidissement en anneau (2), fermé à son extrémité ouverte en direction de la tige de piston par un élément paroi (3) de forme appropriée et divisé au moins une fois radialement. L'invention vise à améliorer la dissipation de la chaleur dans un tel piston. A cet effet, l'élément paroi (3) est pourvu de plusieurs parois transversales (6) réparties radialement sur sa circonférence et s'étendant axialement à l'intérieur du conduit de refroidissement (2).
EP00936631A 1999-06-11 2000-04-14 Piston refroidi pour moteurs a combustion interne Expired - Lifetime EP1185774B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19926568A DE19926568A1 (de) 1999-06-11 1999-06-11 Gekühlter Kolben für Verbrennungsmotoren
DE19926568 1999-06-11
PCT/DE2000/001169 WO2000077379A1 (fr) 1999-06-11 2000-04-14 Piston refroidi pour moteurs a combustion interne

Publications (2)

Publication Number Publication Date
EP1185774A1 true EP1185774A1 (fr) 2002-03-13
EP1185774B1 EP1185774B1 (fr) 2004-10-13

Family

ID=7910860

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00936631A Expired - Lifetime EP1185774B1 (fr) 1999-06-11 2000-04-14 Piston refroidi pour moteurs a combustion interne

Country Status (6)

Country Link
US (1) US6659062B1 (fr)
EP (1) EP1185774B1 (fr)
JP (1) JP2003502558A (fr)
BR (1) BR0011495A (fr)
DE (2) DE19926568A1 (fr)
WO (1) WO2000077379A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8065984B2 (en) 2006-03-25 2011-11-29 Mahle International Gmbh Piston for internal combustion engine

Families Citing this family (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10221561A1 (de) 2002-05-15 2004-01-08 Mahle Gmbh Gekühlter Kolben für einen Verbrennungsmotor
DE10244513A1 (de) * 2002-09-25 2004-04-08 Mahle Gmbh Mehrteiliger gekühlter Kolben für einen Verbrennungsmotor und Verfahren zu dessen Herstellung
DE10244511A1 (de) * 2002-09-25 2004-04-15 Mahle Gmbh Mehrteiliger gekühlter Kolben für einen Verbrennungsmotor
DE10244512A1 (de) 2002-09-25 2004-04-15 Mahle Gmbh Mehrteiliger gekühlter Kolben für einen Verbrennungsmotor
DE10244510A1 (de) * 2002-09-25 2004-04-08 Mahle Gmbh Einteiliger Kühlkanalkolben für einen Verbrennungsmotor
DE10325917A1 (de) * 2003-06-07 2005-03-31 Mahle Gmbh Kolben für einen Verbrennungsmotor und Gießverfahren zu dessen Herstellung
DE10326456A1 (de) * 2003-06-12 2004-12-30 Mahle Gmbh Kolben für einen Verbrennungsmotor
US6820582B1 (en) * 2003-10-06 2004-11-23 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
DE10346822A1 (de) * 2003-10-06 2005-04-21 Mahle Gmbh Kolben für einen Verbrennungsmotor
US6938604B2 (en) * 2003-10-06 2005-09-06 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
DE102004019010A1 (de) * 2004-04-20 2005-11-17 Mahle Gmbh Kühlkanalabdeckung für einen Kolben eines Verbrennungsmotors
DE102004019011A1 (de) * 2004-04-20 2005-11-17 Mahle Gmbh Kühlkanalabdeckung für einen Kolben eines Verbrennungsmotors
DE102004056870A1 (de) * 2004-11-25 2006-06-01 Mahle International Gmbh Kolben mit einem Kühlkanal für einen Verbrennungsmotor und Verfahren zur Herstellung des Kolbens
DE102004056871A1 (de) * 2004-11-25 2006-06-01 Mahle International Gmbh Kolben für einen Verbrennungsmotor mit einem Kühlkanal und Verfahren zum Anbringen von Vorsprüngen an der Innenwand des Kühlkanals
DE102004057624A1 (de) * 2004-11-30 2006-06-01 Mahle International Gmbh Mehrteiliger, gekühlter Kolben für einen Verbrennungsmotor
US7299772B1 (en) * 2006-06-22 2007-11-27 Caterpillar Inc. Cooling gallery fan assembly for a piston
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
DE102008055848A1 (de) * 2008-11-04 2010-05-06 Ks Kolbenschmidt Gmbh Kühlkanalkolben einer Brennkraftmaschine mit einem Verschlusselement, das den Kühlkanal verschließt
DE102010056220A1 (de) * 2010-12-24 2012-06-28 Mahle International Gmbh Kolben für einen Verbrennungsmotor
DE102011076369A1 (de) * 2011-05-24 2012-11-29 Mahle International Gmbh Untere Abdeckung eines Kühlkanals eines Kolbens
DE102012213558A1 (de) * 2012-08-01 2014-02-06 Mahle International Gmbh Kolben
US20150260124A1 (en) * 2012-10-08 2015-09-17 Componenta Finland Oy Piston for an internal combustion engine
US9404439B2 (en) 2012-10-12 2016-08-02 Mahle International Gmbh Piston with cooling gallery and cooling gallery fins
US9228480B2 (en) 2014-06-06 2016-01-05 Mahle Industries, Incorporated Piston crown cooling gallery insert
DE102014015947A1 (de) * 2014-10-30 2016-05-19 Mahle International Gmbh Kühlkanalabdeckung sowie mit einer Kühlkanalabdeckung versehener Kolben
DE102015215803A1 (de) * 2015-08-19 2017-02-23 Federal-Mogul Nürnberg GmbH Verfahren zur Herstellung zumindest eines Teils eines Stahl- oder Aluminiumkolbens für einen Verbrennungsmotor sowie Stahl- oder Aluminiumkolben für einen Verbrennungsmotor
US10247133B2 (en) 2016-01-25 2019-04-02 Tenneco Inc. Piston with cooling gallery radiator and method of construction thereof
DE102016225632A1 (de) * 2016-12-20 2018-06-21 Mahle International Gmbh Kolben einer Brennkraftmaschine
US10774781B2 (en) * 2017-01-25 2020-09-15 Tenneco, Inc. Piston with anti-coking design features
DE102017205716A1 (de) 2017-04-04 2018-10-04 Mahle International Gmbh Kolben einer Brennkraftmaschine
CN110469421A (zh) * 2018-05-11 2019-11-19 强莉莉 一种组合式活塞
US10591059B2 (en) * 2018-06-05 2020-03-17 Mahle International Gmbh Piston with cooling oil diverter
DE102019217732A1 (de) * 2019-11-18 2021-05-20 Mahle International Gmbh Kolben für eine Brennkraftmaschine sowie Brennkraftmaschine

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DE252638C (fr)
DD252638A1 (de) * 1986-09-17 1987-12-23 Ifa Motorenwerke Spritzoelgekuehlter eisenkolben fuer hubkolbenbrennkraftmaschinen
US4986167A (en) 1989-05-25 1991-01-22 Caterpillar Inc. Articulated piston with a cooling recess having a preestablished volume therein
DE3991677T1 (de) * 1989-05-25 1991-06-06 Caterpillar Inc Gelenkiger kolben mit einer ein bestimmtes volumen aufweisenden kuehlausnehmung
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
WO1992010659A1 (fr) * 1990-12-13 1992-06-25 Mahle Gmbh Piston compose refroidi pour moteurs a combustion interne
DE4039754A1 (de) * 1990-12-13 1992-06-17 Mahle Gmbh Mehrteiliger, gekuehlter kolben fuer verbrennungsmotoren
DE4208037C2 (de) * 1992-03-13 1998-03-26 Mahle Gmbh Mehrteiliger, gekühlter Kolben für Verbrennungsmotoren
DE4430137B4 (de) * 1994-08-25 2004-07-22 Mahle Gmbh Mehrteiliger, gekühlter Kolben für Verbrennungsmotoren
DE19501416A1 (de) * 1995-01-19 1996-07-25 Kolbenschmidt Ag Geschmiedeter oder gegossener Kolbenkopf eines mehrteiligen Kolbens
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

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0077379A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8065984B2 (en) 2006-03-25 2011-11-29 Mahle International Gmbh Piston for internal combustion engine

Also Published As

Publication number Publication date
US6659062B1 (en) 2003-12-09
DE19926568A1 (de) 2000-12-14
WO2000077379A1 (fr) 2000-12-21
EP1185774B1 (fr) 2004-10-13
DE50008239D1 (de) 2004-11-18
BR0011495A (pt) 2002-03-05
JP2003502558A (ja) 2003-01-21

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