EP2867509A1 - Agencement spécial d'un alésage de raccordement d'un canal de refroidissement - Google Patents

Agencement spécial d'un alésage de raccordement d'un canal de refroidissement

Info

Publication number
EP2867509A1
EP2867509A1 EP13731137.9A EP13731137A EP2867509A1 EP 2867509 A1 EP2867509 A1 EP 2867509A1 EP 13731137 A EP13731137 A EP 13731137A EP 2867509 A1 EP2867509 A1 EP 2867509A1
Authority
EP
European Patent Office
Prior art keywords
cooling channel
piston
cooling
cooling duct
channel
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.)
Ceased
Application number
EP13731137.9A
Other languages
German (de)
English (en)
Inventor
Michael Albert Janssen
Wolfgang Köhler
Gerhard Luz
Franz Ratzky
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.)
KS Kolbenschmidt GmbH
Original Assignee
KS Kolbenschmidt 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 KS Kolbenschmidt GmbH filed Critical KS Kolbenschmidt GmbH
Publication of EP2867509A1 publication Critical patent/EP2867509A1/fr
Ceased 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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • B23P15/10—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass pistons
    • 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
    • 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
    • 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 
    • F02F3/28—Other pistons with specially-shaped head
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49229—Prime mover or fluid pump making
    • Y10T29/49274—Piston ring or piston packing making

Definitions

  • the invention relates to a method for producing a cooling channel piston according to the preamble of claim 1 and a cooling channel piston of an internal combustion engine produced thereafter.
  • Coolant piston for internal combustion engines are basically known in the art. These have a radially encircling cooling channel arranged behind a ring field, in which a cooling medium, in particular oil circulates. This cooling medium is introduced into the cooling channel via at least one inlet opening, in particular injected, then circulated in the cooling channel and exits again at at least one outlet opening in order to remove the heat in the piston bottom of the cooling channel. Within the cooling channel is around the piston axis around another cooling space, often below a combustion bowl, available. Such a cooling channel piston is known for example from DE 10 2007 018 932 A1.
  • the cooling channel piston of DE 10 2007 018 932 A1 has an outer circumferential annular cooling channel and, approximately below a combustion bowl, a dome-shaped cooling chamber. With this construction, it is possible, for example, that a cooling medium is injected from an injection nozzle via an inlet opening into the outer annular, radially running cooling channel, circulates there and passes via at least one, preferably several, transfer openings into the inner cooling space.
  • the cooling medium can escape from the central cooling chamber via a central bore, through which the piston stroke axis passes, in order to remove the heat in the piston bottom (that is, the region located behind the annular field).
  • a circulation flow in the opposite direction is also possible.
  • the contour of the inner cooling channel (or cooling chamber) is designed according to constant wall thickness towards the combustion chamber recess. Therefore, at any angle to the axis of the transfer hole these holes could be introduced by first with a cutter, the material at the point at which the hole is to be introduced, is lowered and then after a tool change the transfer hole is drilled.
  • this manufacturing step is complicated, since two tools must be used, so that two successive manufacturing steps and / or a tool change is required, which is disadvantageous in particular in the mass production of such cooling channel piston.
  • the invention is therefore based on the object to improve a manufacturing method for crossing holes in cooling channel piston, in particular with regard to reduced production costs. This object is solved by the features of patent claim 1.
  • the contour of the inner surface of the internal cooling channel or cooling space is designed such that, in cross section, the entry angle of the transfer opening is between 85 ° and 95 °, preferably between 87 ° and 93 °, more preferably between 89 ° and 91 °, Finally, preferably exactly 90 °.
  • top, bottom, left, right, front, back, etc. refer exclusively to the example representation and position of the device and other parts selected in the figure. These terms are not meant to be limiting, that is to say that these relationships may change as a result of different working positions and / or mirror-symmetrical design or the like.
  • the FIGURE shows a sectional view of a cooling channel piston 1 produced by the method according to the invention.
  • the cooling channel 1 has a radially encircling cooling channel 2. Below the combustion bowl 3, a cooling space 4 is arranged, which can be filled with a cooling medium, regular engine oil. Between the cooling channel 2 and the cooling chamber 4 are transfer channels 5, designed in particular as holes provided. Through these transfer channels, the cooling medium from the cooling channel can get into the cavity and vice versa.
  • the cooling channel piston 1 is composed of a piston upper part 6 and a piston lower part 7 together. A joining seam 8 forms the contact point between the upper piston part 6 and the lower piston part 7. At the periphery of the cooling channel piston 1 has annular grooves 9 for receiving piston rings, not shown here.
  • the contour of the inner surface of the inner cooling channel 2 or cooling chamber 4 is designed so that in cross section of the entry angle ⁇ of the transfer opening 5 between 85 ° and 95 °, preferably between 87 ° and 93 °, more preferably between 89 ° and 91 °, finally preferably exactly 90 °.

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

L'invention concerne un procédé de production d'un piston à canal de refroidissement (1) pour un moteur à combustion interne, comprenant les étapes suivantes : production d'une partie supérieure de piston (6), impliquant l'insertion d'un bol de combustion, d'un espace de refroidissement (4) d'une partie d'un canal de refroidissement (2), ainsi que des canaux de transfert (5), production d'une partie inférieure de piston (7), impliquant l'insertion d'une partie d'un canal de refroidissement, assemblage des parties de piston, au moins un canal de passage étant obtenu par perçage. L'invention concerne en outre un piston à canal de refroidissement produit conformément au procédé selon l'invention.
EP13731137.9A 2012-06-27 2013-06-24 Agencement spécial d'un alésage de raccordement d'un canal de refroidissement Ceased EP2867509A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102012211037 2012-06-27
DE102012218963 2012-10-18
PCT/EP2013/063141 WO2014001256A1 (fr) 2012-06-27 2013-06-24 Agencement spécial d'un alésage de raccordement d'un canal de refroidissement

Publications (1)

Publication Number Publication Date
EP2867509A1 true EP2867509A1 (fr) 2015-05-06

Family

ID=48692505

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13731137.9A Ceased EP2867509A1 (fr) 2012-06-27 2013-06-24 Agencement spécial d'un alésage de raccordement d'un canal de refroidissement

Country Status (5)

Country Link
US (1) US10221807B2 (fr)
EP (1) EP2867509A1 (fr)
CN (1) CN104603436A (fr)
DE (1) DE102013211953A1 (fr)
WO (1) WO2014001256A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9797337B2 (en) 2015-07-10 2017-10-24 Mahle International Gmbh Oil-cooled piston for an internal combustion engine
EP3612727A1 (fr) 2017-04-19 2020-02-26 KS Kolbenschmidt GmbH Piston en mode de construction structurelle
US11098676B1 (en) * 2020-09-21 2021-08-24 GM Global Technology Operations LLC Radial lip piston profile for easy forgeability
DE102021213333A1 (de) 2021-11-26 2023-06-01 Federal-Mogul Nürnberg GmbH Kolben mit allseitig geschlossenen und mit Kühlmedium befüllten Kühlhohlräumen

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009056917A1 (de) * 2009-12-03 2011-06-09 Mahle International Gmbh Verfahren zur Herstellung eines Kolbens für einen Verbrennungsmotor

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7335155U (de) 1974-12-12 Maschinenfabrik Augsburg Nuernberg Ag Mehrteiliger Kolben für Brennkraftmaschinen, insbesondere Großdieselmotoren
US3613521A (en) * 1968-11-07 1971-10-19 Komatsu Mfg Co Ltd Piston for internal combustion engine
DE102006002949A1 (de) * 2006-01-21 2007-08-02 Ks Kolbenschmidt Gmbh Kühlkanalkolben für eine Brennkraftmaschine
DE102007018932A1 (de) 2007-04-21 2008-10-23 Ks Kolbenschmidt Gmbh Belastungsoptimierter Innenraum eines Kolbens
DE102008011922A1 (de) * 2008-02-29 2009-09-03 Ks Kolbenschmidt Gmbh Kolben für Brennkraftmaschinen, hergestellt mittels eines Multi-Orbitalen Reibschweißverfahrens
DE102008056203A1 (de) * 2008-11-06 2010-05-12 Mahle International Gmbh Mehrteiliger Kolben für einen Verbrennungsmotor und Verfahren zu seiner Herstellung
DE102010015568A1 (de) * 2010-04-19 2011-10-20 Ks Kolbenschmidt Gmbh Kolbenoberteil eines gebauten oder geschweißten Kolbens mit erweiterten Kühlräumen
DE102011111319A1 (de) * 2011-08-26 2013-02-28 Mahle International Gmbh Kolben für einen Verbrennungsmotor

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009056917A1 (de) * 2009-12-03 2011-06-09 Mahle International Gmbh Verfahren zur Herstellung eines Kolbens für einen Verbrennungsmotor

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2014001256A1 *

Also Published As

Publication number Publication date
WO2014001256A1 (fr) 2014-01-03
DE102013211953A1 (de) 2014-01-02
US10221807B2 (en) 2019-03-05
US20150159584A1 (en) 2015-06-11
CN104603436A (zh) 2015-05-06

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