EP1185775A2 - Piston refroidi pour moteur thermique - Google Patents

Piston refroidi pour moteur thermique

Info

Publication number
EP1185775A2
EP1185775A2 EP00940175A EP00940175A EP1185775A2 EP 1185775 A2 EP1185775 A2 EP 1185775A2 EP 00940175 A EP00940175 A EP 00940175A EP 00940175 A EP00940175 A EP 00940175A EP 1185775 A2 EP1185775 A2 EP 1185775A2
Authority
EP
European Patent Office
Prior art keywords
wall part
cooled piston
piston
piston according
cooled
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
EP00940175A
Other languages
German (de)
English (en)
Other versions
EP1185775B1 (fr
Inventor
Detlef Jacobi
Rolf Wellandt
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 EP1185775A2 publication Critical patent/EP1185775A2/fr
Application granted granted Critical
Publication of EP1185775B1 publication Critical patent/EP1185775B1/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 statements is that the supply of the cooling oil for the cooling channel is not satisfactorily solved to the desired extent.
  • the invention is therefore based on the object to improve the supply of the cooling oil in order to cheap catch or. Achieve filling level in the cooling channel.
  • FIG. 2 is a side view of a wall part according to the invention
  • FIG. 3 shows a top view of the wall part according to FIG. 2
  • Fig. 4 is a side view of the twisted ends of the wall part
  • Fig. 5 is a plan view of a second embodiment of the wall part
  • Fig. 6 is a side view of another embodiment of the feed opening of the wall part
  • FIG. 7 is a plan view of FIG .. 6
  • a cooled piston 1 with a cooling channel 3 running in an annular manner in the piston head 2 is closed at its end open towards the piston skirt 4 by a wall part 5, for example a two-part disc spring.
  • the wall part 5 is provided with a first radial division 6 in the region of the oil supply and with a second radial division 7 in the region of the oil drain.
  • the wall part 5 is provided on the one hand with a recess 8, 9, which extends approximately over half the radial width of the wall part 5.
  • a further improvement in the supply of cooling oil can also be achieved by profiling the sections 10, 11, e.g. through a U-shaped design that acts as a gutter.
  • the wall part 5, which has been divided radially once, is on one side at its division 14 for deflecting the cooling oil flow with an obliquely upward direction
  • a drain hole 16 is provided in the wall part 5 as a drain according to about 360.
  • an upwardly narrowing opening 17 is provided in the wall part 5 for supplying the cooling oil, the gap width 18 of which is less than or equal to the diameter 19 of the supplied oil jet.

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)

Abstract

L'invention concerne un piston refroidi pour moteur thermique présentant un canal de refroidissement périphérique annulaire situé dans la tête de piston. Ce piston est fermé du côté de l'ouverture vers la jupe de piston par une paroi de forme appropriée, séparée au moins une fois radialement. Pour améliorer l'arrivée d'huile de refroidissement dans le canal de refroidissement, la paroi doit comporter, au niveau de son extrémité séparatrice, une échancrure et une pièce de séparation pliée vers le haut en forme de S, servant à dévier le jet d'huile de refroidissement.
EP00940175A 1999-06-11 2000-05-05 Piston refroidi pour moteur thermique Expired - Lifetime EP1185775B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19926567 1999-06-11
DE19926567A DE19926567A1 (de) 1999-06-11 1999-06-11 Gekühlter Kolben für Verbrennungsmotoren
PCT/DE2000/001456 WO2000077377A2 (fr) 1999-06-11 2000-05-05 Piston refroidi pour moteur thermique

Publications (2)

Publication Number Publication Date
EP1185775A2 true EP1185775A2 (fr) 2002-03-13
EP1185775B1 EP1185775B1 (fr) 2002-11-13

Family

ID=7910859

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00940175A Expired - Lifetime EP1185775B1 (fr) 1999-06-11 2000-05-05 Piston refroidi pour moteur thermique

Country Status (6)

Country Link
US (1) US6647861B1 (fr)
EP (1) EP1185775B1 (fr)
JP (1) JP4473482B2 (fr)
BR (1) BR0011493A (fr)
DE (2) DE19926567A1 (fr)
WO (1) WO2000077377A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005035961A1 (fr) * 2003-10-06 2005-04-21 Mahle Gmbh Piston monobloc destine a un moteur a combustion interne

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7356188B2 (en) * 2001-04-24 2008-04-08 Microsoft Corporation Recognizer of text-based work
DE10158607B4 (de) * 2001-11-29 2005-10-06 Federal-Mogul Nürnberg GmbH Flüssigkeitsgekühlter Kolben für Verbrennungskraftmaschine
DE10221561A1 (de) 2002-05-15 2004-01-08 Mahle Gmbh Gekühlter 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
US6938604B2 (en) * 2003-10-06 2005-09-06 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
DE102004019011A1 (de) * 2004-04-20 2005-11-17 Mahle Gmbh Kühlkanalabdeckung für einen Kolben eines Verbrennungsmotors
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
DE102011076369A1 (de) * 2011-05-24 2012-11-29 Mahle International Gmbh Untere Abdeckung eines Kühlkanals eines Kolbens
DE102012014195A1 (de) 2012-07-18 2014-01-23 Mahle International Gmbh Kolben für einen Verbrennungsmotor
DE102012213558A1 (de) 2012-08-01 2014-02-06 Mahle International Gmbh Kolben
JP5844716B2 (ja) * 2012-11-07 2016-01-20 本田技研工業株式会社 内燃機関のピストン
DE102013013962A1 (de) * 2013-08-23 2015-02-26 Mahle International Gmbh Baueinheit aus einem Kolben und einer Anspritzdüse für einen Verbrennungsmotor
DE102015203135A1 (de) * 2014-02-21 2015-08-27 Ks Kolbenschmidt Gmbh Kolben mit einem strömungsgünstige Ölführungsflächen aufweisenden offenem Kühlraum sowie ein Verfahren zur Kühlung dieses Kolbens
DE102014015947A1 (de) * 2014-10-30 2016-05-19 Mahle International Gmbh Kühlkanalabdeckung sowie mit einer Kühlkanalabdeckung versehener Kolben
DE102017205716A1 (de) 2017-04-04 2018-10-04 Mahle International Gmbh Kolben einer Brennkraftmaschine

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE252638C (fr)
US3336844A (en) * 1964-08-25 1967-08-22 Cornet Andre Pistons for engines with a high thermal load
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
DE4039754A1 (de) * 1990-12-13 1992-06-17 Mahle Gmbh Mehrteiliger, gekuehlter kolben fuer verbrennungsmotoren
WO1992010659A1 (fr) 1990-12-13 1992-06-25 Mahle Gmbh Piston compose refroidi pour moteurs a combustion interne
DE4208037C2 (de) * 1992-03-13 1998-03-26 Mahle Gmbh Mehrteiliger, gekühlter Kolben für Verbrennungsmotoren
DE4446726A1 (de) * 1994-12-24 1996-06-27 Mahle Gmbh Verfahren zur Herstellung eines einteiligen Kühlkanalkolbens
US6401595B1 (en) * 2000-10-18 2002-06-11 Caterpillar Inc. Piston for an internal combustion engine and method of assembly

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0077377A2 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005035961A1 (fr) * 2003-10-06 2005-04-21 Mahle Gmbh Piston monobloc destine a un moteur a combustion interne
US7409903B2 (en) 2003-10-06 2008-08-12 Mahle Gmbh One-piece piston for an internal combustion engine

Also Published As

Publication number Publication date
BR0011493A (pt) 2002-05-14
WO2000077377A3 (fr) 2001-05-31
JP4473482B2 (ja) 2010-06-02
US6647861B1 (en) 2003-11-18
DE50000766D1 (de) 2002-12-19
JP2003502557A (ja) 2003-01-21
DE19926567A1 (de) 2000-12-14
WO2000077377A2 (fr) 2000-12-21
EP1185775B1 (fr) 2002-11-13

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