EP1815123A1 - Piston muni d'un canal de refroidissement pour moteur a combustion interne et procede de production dudit piston - Google Patents

Piston muni d'un canal de refroidissement pour moteur a combustion interne et procede de production dudit piston

Info

Publication number
EP1815123A1
EP1815123A1 EP05826464A EP05826464A EP1815123A1 EP 1815123 A1 EP1815123 A1 EP 1815123A1 EP 05826464 A EP05826464 A EP 05826464A EP 05826464 A EP05826464 A EP 05826464A EP 1815123 A1 EP1815123 A1 EP 1815123A1
Authority
EP
European Patent Office
Prior art keywords
cooling channel
piston
salt core
helix
producing
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
EP05826464A
Other languages
German (de)
English (en)
Other versions
EP1815123B1 (fr
Inventor
Peter Heidrich
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 International GmbH
Original Assignee
Mahle International 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 International GmbH filed Critical Mahle International GmbH
Publication of EP1815123A1 publication Critical patent/EP1815123A1/fr
Application granted granted Critical
Publication of EP1815123B1 publication Critical patent/EP1815123B1/fr
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/10—Cores; Manufacture or installation of cores
    • B22C9/105—Salt cores
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D19/00—Casting in, on, or around objects which form part of the product
    • B22D19/0009—Cylinders, pistons
    • B22D19/0027—Cylinders, pistons pistons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D19/00—Casting in, on, or around objects which form part of the product
    • B22D19/0072—Casting in, on, or around objects which form part of the product for making objects with integrated channels
    • 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
    • F02F2200/06—Casting

Definitions

  • Piston having a cooling passage for an internal combustion engine and method of manufacturing the piston
  • the invention relates to a piston with a cooling channel for a Verbrennungs ⁇ engine according to the preamble of claim 1 and a method for producing the piston according to the preamble of the independent claim.
  • Japanese Unexamined Patent Publication No. 09096248 discloses a piston for an internal combustion engine having an annular cooling passage in its radially outer portion and near the piston head, on the inner wall of which protrusions projecting into the interior of the cooling passage are formed consist of the same material as the piston.
  • the use of a soluble core is required, which has a very complicated structured surface, which has the disadvantage that the production of the known piston is very complicated and expensive.
  • a simple helix is used, which, in order to attach projections to the inner wall of the cooling channel, becomes a salt core, which is used to produce the cooling channel.
  • FIG. 2 shows a toroidal salt core, on the outer surface of which the coil according to the invention is wound, and which, in the production of the piston, is inserted into a casting mold and surrounded by aluminum.
  • piston 1 shows a piston 1 made of aluminum in section, which has a combustion bowl 3 formed in its piston head 2 and on its underside facing away from the piston bottom two mutually opposite shaft elements 4, 4 ', of which pin bosses 5 are held with hub bores 6 , In the vicinity of the piston bottom is located on the radial outer side 8 of the piston 1, a ring portion. 7
  • the piston 1 has a ring ⁇ shaped and dashed lines drawn cooling channel 9, in the oil inlet opening 10 via a cooling oil 11 is introduced via an oil drain opening 12 in the direction of arrow 13 from the cooling channel 9 runs out again.
  • the surface of the cooling channel 9 crucial for the cooling effect is increased so that the heat dissipation via the cooling oil is also improved, since in this case additional heat is dissipated by the helix 15 Piston 1 is received and passed over the surface of the cooling oil.
  • the coil 15 can be arranged according to the invention in the cooling channel of a cooled ring carrier.
  • the method of introducing the helix 15 into the cooling channel 9 will be explained with reference to FIG. 2. Shown is a donut-shaped salt core 16, on the outer surface of the helix 15 is arranged. This salt core 16 is placed in a casting mold for pistons and surrounded with aluminum, wherein the salt core 16 plays the role of a Platzhal ⁇ ter for the cooling channel 9. Subsequently, the oil feed and the oil drain opening 10 and 12 are introduced into the finished cast Kol ⁇ benrohling within the fine machining of the piston 1, whereupon the salt of the Salzkernes16 is washed out of the cooling channel 9. What remains is the helix 15, which is connected to the inner wall of the cooling channel 9 and thereby improves the cooling effect of the oil passed through the cooling channel 9.
  • the salt core 16 is first prepared by filling in a salt corrugation corresponding to the salt core 16, which is subjected to a pressing pressure which solidifies the salt and thereby forms the salt core 16, On the salt core 16, the helix 15 is then wound up.
  • either the shape for the salt core can have a helical formation directed into the interior of the shape, such that a spiral groove results when the salt core is pressed on its surface, in which the helix 15 comes to lie on the salt core 16 during winding.
  • a shape is selected for the salt core 16 whose inner diameter is equal to the radial diameter r, the slightly prestressed helix 15, which is therefore smaller than the radial diameter of the relaxed helix 15th
  • the helix 15, which is slightly preloaded about its longitudinal axis by twisting, is inserted into this mold and, moreover, salt granules are introduced, after which the salt core 16 is pressed with the helix 15 inserted.
  • the salt core 16 is solidified such that the coil 15 remains in the salt core 16 after the pressing process. If, after pouring the piston 1 using this salt core 16, the salt is washed out, the coil 15 adheres under prestress to the inner surface of the cooling channel 9 and thereby contributes to improving the cooling effect of the cooling oil.

Landscapes

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

Abstract

L'invention concerne un piston (1) pour moteur à combustion interne, comportant un canal de refroidissement (9) annulaire disposé à proximité du fond du piston (2), dont la paroi intérieure présente des parties saillantes faisant saillie à l'intérieur du canal de refroidissement (9). Lesdites parties saillantes sont formées par une hélice (15) spiroïdale, disposée à l'intérieur du canal de refroidissement (9) et reposant contre la paroi intérieure du canal de refroidissement (9). Il est de ce fait aisé de parvenir au fait que l'huile de refroidissement parcourant le canal de refroidissement (8) soit mise en tourbillonnement et que son action de refroidissement en soit améliorée.
EP05826464A 2004-11-25 2005-11-24 Piston muni d'un canal de refroidissement pour moteur a combustion interne et procede de production dudit piston Expired - Fee Related EP1815123B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200410056870 DE102004056870A1 (de) 2004-11-25 2004-11-25 Kolben mit einem Kühlkanal für einen Verbrennungsmotor und Verfahren zur Herstellung des Kolbens
PCT/DE2005/002118 WO2006056185A1 (fr) 2004-11-25 2005-11-24 Piston muni d'un canal de refroidissement pour moteur a combustion interne et procede de production dudit piston

Publications (2)

Publication Number Publication Date
EP1815123A1 true EP1815123A1 (fr) 2007-08-08
EP1815123B1 EP1815123B1 (fr) 2013-01-09

Family

ID=35994678

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05826464A Expired - Fee Related EP1815123B1 (fr) 2004-11-25 2005-11-24 Piston muni d'un canal de refroidissement pour moteur a combustion interne et procede de production dudit piston

Country Status (3)

Country Link
EP (1) EP1815123B1 (fr)
DE (1) DE102004056870A1 (fr)
WO (1) WO2006056185A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006056012A1 (de) * 2006-11-28 2008-05-29 Ks Kolbenschmidt Gmbh Variabel gestalteter Kühlkanal für einen Kolben
DE102007044105A1 (de) 2007-04-27 2008-10-30 Mahle International Gmbh Gießkern zur Bildung eines Kühlkanals in einem gießtechnisch hergestellten Kolben
KR101371313B1 (ko) 2012-05-03 2014-03-10 자동차부품연구원 엔진피스톤 냉각 갤러리 성형용 솔트코어 및 그 제조방법
DE102012217939A1 (de) * 2012-10-01 2014-04-03 Mahle International Gmbh Verfahren zur Herstellung von Kernen für die gießtechnische Herstellung von Werkstücken

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1454468A (fr) * 1965-08-23 1966-02-11 Perfectionnements aux pistons de moteurs
DE1751342B1 (de) * 1968-05-14 1970-06-18 Alcan Aluminiumwerke Kolben mit im Kolbenkopf angeordnetem,ringfoermigem Kuehlkanal
JPS6072656A (ja) * 1983-09-30 1985-04-24 Nissan Motor Co Ltd ピストンの製造方法
JP2764071B2 (ja) * 1988-10-31 1998-06-11 イズミ工業株式会社 内燃機関用ピストンの製造方法
JP3568136B2 (ja) * 1995-10-02 2004-09-22 株式会社小松製作所 内燃機関用ピストンの冷却装置
DE19810937C1 (de) * 1998-03-13 1999-11-25 Daimler Chrysler Ag Kolben für eine Brennkraftmaschine
GB9909034D0 (en) * 1999-04-19 1999-06-16 Seneca Tech Ltd Piston coolant path
DE19926568A1 (de) * 1999-06-11 2000-12-14 Mahle Gmbh Gekühlter Kolben für Verbrennungsmotoren
DE19930630C1 (de) * 1999-07-02 2000-10-26 Federal Mogul Nuernberg Gmbh Flüssigkeitsgekühlter Kolben
DE10036481A1 (de) * 2000-07-20 2002-02-07 Metallwerke Harzgerode Gmbh Verfahren zur Herstellung von Aluminiumkolben
DE10158607B4 (de) * 2001-11-29 2005-10-06 Federal-Mogul Nürnberg GmbH Flüssigkeitsgekühlter Kolben für Verbrennungskraftmaschine
DE10319230A1 (de) * 2003-04-28 2004-11-18 Ks Kolbenschmidt Gmbh Kolben mit Kühlkanal mit verbesserter Durchsatzleistung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2006056185A1 *

Also Published As

Publication number Publication date
WO2006056185A1 (fr) 2006-06-01
DE102004056870A1 (de) 2006-06-01
EP1815123B1 (fr) 2013-01-09

Similar Documents

Publication Publication Date Title
EP0612375B1 (fr) Pointeau pour une soupape a commande electromagnetique et son procede de fabrication
EP0685643B1 (fr) Pointeau pour une soupape à commande électromagnétique
EP1919655B1 (fr) Procede pour realiser une cage solide
DE19740026B4 (de) Kraftstoffeinspritzventil
DE19710470A1 (de) Antriebsschneckeneinheit sowie die Einheit verwendender Elektromotor
DE102005029417A1 (de) Verfahren zur Herstellung eines Kolbens für einen Verbrennungsmotor
DE102016123838B4 (de) Verfahren zur Herstellung eines Aluminium-Zylinderblocks
DE10321198B4 (de) Kraftstoffeinspritzventil
EP1636474B1 (fr) Procede de production d'un piston monobloc pour un moteur a combustion
EP1815123B1 (fr) Piston muni d'un canal de refroidissement pour moteur a combustion interne et procede de production dudit piston
DE102008028197A1 (de) Kolben für einen Verbrennungsmotor und Verfahren zu seiner Herstellung
WO2010003398A1 (fr) Insert pour le piston d'un moteur à combustion interne et piston ou tête de piston équipé de l'insert
DE19712922A1 (de) Brennstoffeinspritzventil
EP1636473B2 (fr) Piston pour un moteur a combustion interne et procede de coulee pour sa production
DE69301520T2 (de) Verfahren zur Herstellung eines Tassenstössels für eine Brennkraftmaschine
DE19716702C2 (de) Metallische Gußformanordnung für einen Hubkolben sowie Hubkolben, insbesondere für Brennkraftmaschinen
DE102019211440A1 (de) Motorgehäuse und Verfahren zur Herstellung eines Motorgehäuses
EP0505773B1 (fr) Piston d'amortisseur fait avec des pièces jointes, de forme différente
DE102009043382B4 (de) Verfahren zur Herstellung eines Kraftfahrzeugmotorbauteils mit nicht achsensymmetrischem Querschnitt
DE10218999B4 (de) Kolben mit Ringträger und Formkühlkanal
DE10325914A1 (de) Kolben für einen Verbrennungsmotor
EP1699578B1 (fr) Procede de production d'un boitier en forme de manchon, a partir de plusieurs toles plates
DE3231998A1 (de) Kolben mit einlage
DE10015709B4 (de) Kolben mit einem ringförmigen Kühlkanal
DE102014106925B4 (de) Lagerbrücke zur Lagerung einer Nockenwelle

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20070615

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR GB IT

RIN1 Information on inventor provided before grant (corrected)

Inventor name: HEIDRICH, PETER

DAX Request for extension of the european patent (deleted)
RBV Designated contracting states (corrected)

Designated state(s): DE FR GB IT

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502005013413

Country of ref document: DE

Effective date: 20130307

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20131010

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20130109

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502005013413

Country of ref document: DE

Effective date: 20131010

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 11

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 12

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20181130

Year of fee payment: 14

Ref country code: GB

Payment date: 20181130

Year of fee payment: 14

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20190131

Year of fee payment: 14

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 502005013413

Country of ref document: DE

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20191124

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20191130

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200603

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20191124