EP1504182B1 - Piston refroidi pour moteur a combustion interne - Google Patents

Piston refroidi pour moteur a combustion interne Download PDF

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Publication number
EP1504182B1
EP1504182B1 EP03735298A EP03735298A EP1504182B1 EP 1504182 B1 EP1504182 B1 EP 1504182B1 EP 03735298 A EP03735298 A EP 03735298A EP 03735298 A EP03735298 A EP 03735298A EP 1504182 B1 EP1504182 B1 EP 1504182B1
Authority
EP
European Patent Office
Prior art keywords
cooling
piston
internal combustion
combustion engine
cooling oil
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
EP03735298A
Other languages
German (de)
English (en)
Other versions
EP1504182A1 (fr
Inventor
Hanspeter Wieland
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 EP1504182A1 publication Critical patent/EP1504182A1/fr
Application granted granted Critical
Publication of EP1504182B1 publication Critical patent/EP1504182B1/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 
    • F02F3/16—Pistons  having cooling means
    • F02F3/20—Pistons  having cooling means the means being a fluid flowing through or along piston
    • 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 an internal combustion engine, with a combustion bowl in the piston head and an annular ring at the circumference of the annular cooling channel, at its end open to the piston shaft end by a correspondingly shaped and circumferentially at least once radially divided with adeöeinlass anddeölauslass wall portion provided is closed.
  • Such a piston is for example from the DE 199 26 568 A1 known, in which a wall part closes the cooling channel, wherein the wall portion distributed on its circumference with a plurality of radially arranged, extending axially into the cooling channel extending transverse walls to improve the heat dissipation.
  • the transverse walls divide the cooling channel into shaper spaces or sections of constant size in order to maintain a certain level of cooling oil in the cooling channel.
  • a multi-part, liquid-cooled piston for internal combustion engines which has a ⁇ lleitring atdeöleinlass its cooling channel, which passes the incoming cooling oil into the cooling channel by means of a lip along the periphery of the cooling channel.
  • the DE 35 18 497 A1 describes a liquid-cooled piston, in which a deep eccentric piston recess can be realized without affecting the strength of the piston.
  • a cooling channel is designed such that its width and depth depend on the distance from the piston recess, but the cross-sectional area of the cooling channel is circumferentially and thus the cooling channel volume, constant.
  • a general disadvantage of the aforementioned embodiments is that the residence time of the cooling oil in the cooling channel is not satisfactorily solved and that with the aforementioneddekanalkonstrutationen dependent on the temperatures occurring or certain heat dissipation from the hot piston areas can not be realized in the coolant.
  • the object of the invention is to design a cooling channel for a piston of an internal combustion engine so as to achieve improved location-dependent heat dissipation from the particular hot piston areas, so that an approximately uniform temperature distribution in the cooling channel and thus optimum cooling effect of the piston is ensured.
  • the cold cooling oil introduced into the cooling channel is distributed on a first section of an oil guide ring with a very small volume relative to the total cooling channel volume and thus a close contact with the wall surfaces to be cooled is produced by the shaker action.
  • the amount of heat introduced into the cooling oil or the cooling of the piston is therefore high and intense.
  • the following sections of the oil guide increase the respective cooling channel volume, thereby correspondingly shortening the residence time of the cooling oil on the wall surfaces to be cooled.
  • the existing between the cooling inlet -cold cooling oil anddeölauslass -hot cooling oil- large temperature difference is prevented and thus a cause for the emergence of mechanical stresses in the combustion chamber of the piston.
  • a piston 1 has a provided in height of the ring section cooling channel 2, which is closed at its end open to the piston skirt end by a two-part spring member 8, which has a serving as a cooling oil inlet 5 opening.
  • the ⁇ lleitring 3 Due to the axial spring action of the spring member 8, the ⁇ lleitring 3 is fixed in the cooling channel, wherein the radial alignment of the opening 5 of the spring member 8 and the ⁇ lleitrings 3 is required to match thedeoleinleinasse during assembly.
  • the cooling oil outlet 6 is in this mounting position in accordance with a cooling oil drain 6.1, which dissipates the oil in the interior of the piston.
  • a light metal such as aluminum, or temperature-resistant plastic ⁇ lleitring be glued or screwed on at least part of the two-part spring member 8.
  • the bearing of the spring member 8 in the piston 1 is carried out in a known manner, such as by providing a support for the inner periphery and a corresponding collar-like recess for the outer periphery of the spring member 8.
  • the spring member is divided by radial divisions in half, the biased form the lower end of the cooling channel 8.
  • the oil guide ring 3 has on its circumference symmetrically distributed between the cooling oil inlet and - outlet stages 9, each forming sections 4 between the stages, which are arranged axially in the cooling channel 2 at different heights.
  • the first section 4.1 or 4.1 ' has the smallest volume relative to the total cooling channel volume, ie the step 9 has a height h which corresponds to approximately 60 percent of the cooling channel height.
  • Each of the subsequent stages of sections 4.2 to 4.4 or 4.2 'to 4.4' increase by about another 10 percent in height with respect to the first section.
  • the distribution of the steps 9, and thus the number is determined by means of different arc angles ⁇ , ⁇ , ⁇ , ⁇ (in the clockwise direction, as shown in FIG.
  • the cold cooling oil in the first section 4 receives a large amount of heat through the direct contact with the hot wall surfaces without shaker effect.
  • the further absorption of heat is reduced by the partial enlargement of the cooling channel volume, wherein the heat transfer is now achieved only by the action of the shakem as a result of the stroke movement of the piston.
  • the 28 mm 2 large cross section of the first sections 4.1 / 4.1 'of the cooling channel increases to 198 mm 2 in the fourth sections 4.4 / 4.4'. Overall, this results in a better heat distribution, in particular on the ring part and the trough edge of the piston.

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)
  • Dowels (AREA)

Claims (7)

  1. Piston refroidi pour un moteur à combustion interne, comportant un canal de refroidissement s'étendant périphériquement en forme d'anneau à la hauteur de la partie segments, qui est fermé à son extrémité ouverte en direction de la jupe de piston par une pièce de paroi de forme correspondante et divisée radialement au moins une fois du côté périphérique, pourvue d'une entrée d'huile de refroidissement, caractérisé en ce qu'un anneau de guidage d'huile (3) qui divise le canal de refroidissement du côté périphérique, symétriquement de l'entrée d'huile de refroidissement (5) à la sortie d'huile de refroidissement (6), en tronçons de volumes de canal différents, est disposé périphériquement dans le canal de refroidissement (2).
  2. Piston refroidi pour un moteur à combustion interne, selon la revendication 1, caractérisé en ce que du côté périphérique, les tronçons (4) sont formés par des paliers (9) ménagés dans l'anneau de guidage d'huile (3), chaque palier (9) augmentant le volume du canal de refroidissement proportionnellement au volume total du canal de refroidissement, de l'entrée d'huile de refroidissement (5) à la sortie d'huile de refroidissement (6).
  3. Piston refroidi pour un moteur à combustion interne, selon la revendication 1 et 2, caractérisé en ce que les tronçons (4) de forme annulaire sont définis par un angle d'arc de cercle, dont l'élévation augmente de manière linéaire de l'entrée d'huile de refroidissement (5) à la sortie d'huile de refroidissement (6).
  4. Piston refroidi pour un moteur à combustion interne, selon la revendication 3, caractérisé en ce que l'élévation est de 10 degrés d'arc de cercle pour chaque tronçon.
  5. Piston refroidi pour un moteur à combustion interne, selon l'une des revendications 1 à 4, caractérisé en ce que l'entrée d'huile de refroidissement (5) et la sortie d'huile de refroidissement (6) sont disposées en vis-à-vis l'une de l'autre dans le canal de refroidissement (2) et que le premier tronçon (4.1) de l'entrée d'huile de refroidissement (5) est formé par un angle d'arc de cercle de 30 degrés.
  6. Piston refroidi pour un moteur à combustion interne, selon la revendication 1, caractérisé en ce que l'anneau de guidage d'huile (3) est fixé sur au moins l'une des pièces de ressort (8).
  7. Moteur à combustion interne selon la revendication 1, caractérisé en ce que l'anneau de guidage d'huile (3) est constitué d'aluminium ou de matière plastique.
EP03735298A 2002-05-15 2003-05-13 Piston refroidi pour moteur a combustion interne Expired - Lifetime EP1504182B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10221561A DE10221561A1 (de) 2002-05-15 2002-05-15 Gekühlter Kolben für einen Verbrennungsmotor
DE10221561 2002-05-15
PCT/DE2003/001534 WO2003098022A1 (fr) 2002-05-15 2003-05-13 Piston refroidi pour moteur a combustion interne

Publications (2)

Publication Number Publication Date
EP1504182A1 EP1504182A1 (fr) 2005-02-09
EP1504182B1 true EP1504182B1 (fr) 2007-12-26

Family

ID=29432118

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03735298A Expired - Lifetime EP1504182B1 (fr) 2002-05-15 2003-05-13 Piston refroidi pour moteur a combustion interne

Country Status (9)

Country Link
US (1) US7131418B2 (fr)
EP (1) EP1504182B1 (fr)
JP (1) JP4230449B2 (fr)
KR (1) KR100999229B1 (fr)
AT (1) ATE382119T1 (fr)
BR (1) BR0309971B1 (fr)
DE (2) DE10221561A1 (fr)
ES (1) ES2298528T3 (fr)
WO (1) WO2003098022A1 (fr)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004019011A1 (de) * 2004-04-20 2005-11-17 Mahle Gmbh Kühlkanalabdeckung für einen Kolben eines Verbrennungsmotors
DE102004057624A1 (de) * 2004-11-30 2006-06-01 Mahle International Gmbh Mehrteiliger, gekühlter Kolben für einen Verbrennungsmotor
DE102004060546A1 (de) * 2004-12-16 2006-06-29 Ks Kolbenschmidt Gmbh Kolben mit einem asymmetrischen Kühlkanal
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
DE102008002571A1 (de) * 2008-06-20 2009-12-31 Federal-Mogul Nürnberg GmbH Kolben für einen Verbrennungsmotor
DE102009039217A1 (de) 2009-08-28 2011-03-03 Mahle International Gmbh Kolben für einen Verbrennungsmotor
US8291881B2 (en) * 2009-12-22 2012-10-23 Perkins Engine Company Limited Piston for internal combustion engine
WO2011097205A2 (fr) * 2010-02-03 2011-08-11 Federal-Mogul Corporation Piston pourvu d'un élément de refroidissement de canalisation de refroidissement centrale
US8459229B2 (en) * 2010-04-20 2013-06-11 Southwest Research Institute Piston bowl with spray jet targets
US8978621B2 (en) * 2010-04-20 2015-03-17 Caterpillar Inc. Piston having combustion bowl shaped to balance combustion efficiency and emission properties
US9234451B2 (en) 2010-04-20 2016-01-12 Caterpillar Inc. Piston having combustion bowl shaped to balance combustion efficiency and emission properties
US9279361B2 (en) 2010-04-20 2016-03-08 Southwest Research Institute Piston bowl with spray jet targets
US8555854B2 (en) 2010-04-26 2013-10-15 Southwest Research Institute Piston bowl with deflecting features
US8677974B2 (en) 2010-05-04 2014-03-25 Southwest Research Institute Piston bowl with flat bottom
US9856820B2 (en) * 2010-10-05 2018-01-02 Mahle International Gmbh Piston assembly
WO2012125961A1 (fr) * 2011-03-17 2012-09-20 Cummins Intellectual Property, Inc. Piston pour moteur à combustion interne
US9228531B2 (en) 2013-05-13 2016-01-05 Caterpillar Inc. Piston having combustion bowl and engine using same
US9328693B2 (en) 2013-07-17 2016-05-03 Electro-Motive Diesel, Inc. Piston, engine and operating method for reduced production of particulate matter
US9429101B2 (en) * 2013-08-21 2016-08-30 Caterpillar Inc. Combustion engine piston and engine using same
CN107454924B (zh) * 2015-01-30 2020-03-20 天纳克公司 带有冷却通道冷却插入件的活塞及其构建方法
WO2018096592A1 (fr) * 2016-11-22 2018-05-31 マツダ株式会社 Moteur diesel
US10774781B2 (en) 2017-01-25 2020-09-15 Tenneco, Inc. Piston with anti-coking design features

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1244830A (fr) * 1959-02-03 1960-10-28 Mahle Kg Piston en métal léger avec canaux de refroidissement et son procédé de fabrication
DE2723619C2 (de) * 1977-05-25 1984-10-04 Karl Schmidt Gmbh, 7107 Neckarsulm Mehrteiliger, flüssigkeitsgekühlter Kolben für Brennkraftmaschinen
JPS56124650A (en) 1980-03-06 1981-09-30 Mitsubishi Heavy Ind Ltd Piston for internal combustion engine
DE3518497A1 (de) * 1985-05-23 1986-11-27 Audi AG, 8070 Ingolstadt Fluessigkeitsgekuehlter kolben
DE3830033C2 (de) 1987-11-30 1998-05-07 Mahle Gmbh Gebauter, ölgekühlter Tauchkolben für 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
DE4446726A1 (de) * 1994-12-24 1996-06-27 Mahle Gmbh Verfahren zur Herstellung eines einteiligen Kühlkanalkolbens
DE19501416A1 (de) * 1995-01-19 1996-07-25 Kolbenschmidt Ag Geschmiedeter oder gegossener Kolbenkopf eines mehrteiligen Kolbens
DE19618625C1 (de) 1996-05-09 1997-10-23 Daimler Benz Ag Flüssigkeitsgekühlter Kolben für Verbrennungsmotoren
DE19926568A1 (de) 1999-06-11 2000-12-14 Mahle Gmbh Gekühlter Kolben für Verbrennungsmotoren
DE19926567A1 (de) * 1999-06-11 2000-12-14 Mahle Gmbh Gekühlter Kolben für Verbrennungsmotoren
DE19960913A1 (de) * 1999-12-17 2001-06-21 Mahle Gmbh Untere Abdeckung eines Kühlraumes für Kolben von Verbrennungsmotoren
US6401595B1 (en) * 2000-10-18 2002-06-11 Caterpillar Inc. Piston for an internal combustion engine and method of assembly
DE10244513A1 (de) * 2002-09-25 2004-04-08 Mahle Gmbh Mehrteiliger gekühlter Kolben für einen Verbrennungsmotor und Verfahren zu dessen Herstellung
DE10326456A1 (de) * 2003-06-12 2004-12-30 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

Also Published As

Publication number Publication date
US20050211088A1 (en) 2005-09-29
JP2005534840A (ja) 2005-11-17
DE10221561A1 (de) 2004-01-08
US7131418B2 (en) 2006-11-07
DE50308885D1 (de) 2008-02-07
WO2003098022A1 (fr) 2003-11-27
ES2298528T3 (es) 2008-05-16
EP1504182A1 (fr) 2005-02-09
ATE382119T1 (de) 2008-01-15
BR0309971A (pt) 2005-03-01
JP4230449B2 (ja) 2009-02-25
KR100999229B1 (ko) 2010-12-07
BR0309971B1 (pt) 2013-12-24
KR20040106542A (ko) 2004-12-17

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