EP1963655A1 - Piston pour moteur a combustion interne et procede de fabrication dudit piston - Google Patents

Piston pour moteur a combustion interne et procede de fabrication dudit piston

Info

Publication number
EP1963655A1
EP1963655A1 EP06828686A EP06828686A EP1963655A1 EP 1963655 A1 EP1963655 A1 EP 1963655A1 EP 06828686 A EP06828686 A EP 06828686A EP 06828686 A EP06828686 A EP 06828686A EP 1963655 A1 EP1963655 A1 EP 1963655A1
Authority
EP
European Patent Office
Prior art keywords
piston
cooling channel
cooling
salt core
projections
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.)
Withdrawn
Application number
EP06828686A
Other languages
German (de)
English (en)
Inventor
Arnold Benz
Helmut Kollotzek
Markus Leitl
Sven Schilling
Ernst Limbach
Josip Zvonkovic
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 EP1963655A1 publication Critical patent/EP1963655A1/fr
Withdrawn legal-status Critical Current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
    • 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
    • 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
    • B22D15/00—Casting using a mould or core of which a part significant to the process is of high thermal conductivity, e.g. chill casting; Moulds or accessories specially adapted therefor
    • B22D15/02—Casting using a mould or core of which a part significant to the process is of high thermal conductivity, e.g. chill casting; Moulds or accessories specially adapted therefor of cylinders, pistons, bearing shells or like thin-walled objects
    • 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
    • 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
    • B22D21/00—Casting non-ferrous metals or metallic compounds so far as their metallurgical properties are of importance for the casting procedure; Selection of compositions therefor
    • B22D21/002—Castings of light metals
    • B22D21/007—Castings of light metals with low melting point, e.g. Al 659 degrees C, Mg 650 degrees C
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D29/00—Removing castings from moulds, not restricted to casting processes covered by a single main group; Removing cores; Handling ingots
    • B22D29/001—Removing cores
    • B22D29/002—Removing cores by leaching, washing or dissolving
    • 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
    • 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
    • Y10T29/49249—Piston making
    • 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
    • Y10T29/49249—Piston making
    • Y10T29/49252—Multi-element piston making
    • 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 piston for an internal combustion engine according to the preamble of claim 1 and a method for its production according to claim 6.
  • US Pat. No. 4,662,319 discloses a built-up piston for an internal combustion engine which comprises a piston main body with pin bosses and a piston upper part connected thereto.
  • the piston base body On the piston bottom side, the piston base body has an annular bearing surface on which the piston upper part rests, and which is connected to the pin bosses via conically shaped wall elements.
  • the wall elements form an annular space approaching the pin bosses, which is covered on the piston bottom side by a ring element which has openings through which cooling oil is introduced into the annular space with which the pin bosses are cooled.
  • the ring member further includes a radially outwardly formed in the underside of the piston upper part recess, so that there is a closed, annular cooling channel for cooling the annular grooves.
  • the disadvantage here is the complicated structure of the known from the US patent piston, whereby the production of the piston is complicated and expensive.
  • Show it 1 shows a section through a piston shown in perspective with a circumferential cooling channel, each having a Nabenk ⁇ hl- channel in the region of the pin bosses,
  • FIG. 2 shows a section through the piston shown in perspective with a cooling channel according to FIG. 2, which has a plurality of hump-shaped and piston-bottom-side arranged cross-sectional widenings, FIG.
  • FIG 3 shows a section through the piston, which is shown in perspective, with a hub cooling channel, which is connected to the cooling channel only via an oil inlet opening, and
  • Fig. 4 shows a section through the piston shown in perspective with a cooling channel having in the region of the pin bosses depending on a radially inwardly directed, surface-shaped Nabenkühlkanal.
  • Fig. 1 shows a perspective view of a piston 1 for an internal combustion engine in section with a combustion bowl 2 in the piston head 3.
  • the radial outer surface of the piston 1 has an adjacent to the piston crown 3 land land 4 and adjacent to a ring section 5, followed by a rotating shaft 6 connects.
  • On opposite sides of the shaft 6 are each a pin hub 7, each with a hub bore 8 is held.
  • the piston 1 in the piston crown radially outside an annular, circumferential cooling channel 9, is introduced into the cooling oil via an opening into the piston interior 14 oil supply passage 10, and from the cooling oil via a in the Figures not shown, discharged into the piston interior 14 ⁇ lab Concretekanal is discharged again.
  • the cooling channel 9 is connected to one in the areas T of the two pin bosses 7 arranged Nabenkühlkanal 13, wherein the two Nabenkühlkanäle 13 via one oil inlet opening 11 and one each Oil drain opening 12 are connected to the cooling channel 9.
  • the two Nabenkühlkanäle 13 also each have an opening into the piston interior 14 oil drain channel 15.
  • a salt core is initially formed, which has the shape of the cooling channel 9 with the hub cooling channels 13 formed thereon, each with an oil drain channel 15.
  • the salt core is then placed in a mold and encapsulated with the piston material, i.e., with aluminum or with cast iron.
  • the oil supply channel 10 and the ⁇ lab Industrieskanal is drilled into the piston 1, through which the salt of the salt core is washed out of the piston blank.
  • the piston is completed by means of a machining process.
  • FIG. 2 an embodiment of a cooling channel 9 1 is shown, distributed over the entire circumference, piston bottom side arranged humpy cross-sectional extensions 16 whose purpose is to improve the cooling of the thermally highly loaded edge of the combustion bowl 2 in that the cooling channel 9 'in the areas of the cross-sectional widenings 16 comes closer to the edge of the combustion chamber trough 2, so that the cooling oil can get closer to the trough edge.
  • Fig. 3 an embodiment of the Nabenkühlkanals 13 'is shown, which is connected exclusively via the oil drain passage 15 with the piston interior 14, so that the entire through the Nabenkühlkanal 13' flowing oil is fed into the piston interior 14.
  • the design of the cooling channel 9 "according to FIG. 4 has in each case a radially inwardly directed, in plan view flat surface-shaped hub cooling channel 17 in the piston bottom side regions T of the pin bosses 7, from which cooling oil is conducted via the oil drain channel 15 into the piston interior 14 area-wide - A -
  • Th Nabenkühlkanals 17 is a relatively large area of the pin bosses 7 covered with cooling surface, which comes into contact with cooling oil, so that in this way a very good cooling of the areas T of the pin bosses 7 is achieved.

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)
  • Pistons, Piston Rings, And Cylinders (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)

Abstract

L'invention concerne un piston (1) pour moteur à combustion interne, qui présente un canal de refroidissement (9) de forme annulaire situé radialement vers l'extérieur à proximité de la tête du piston et qui présente, dans les zones (71) des bossages (7) de l'axe du piston situées à proximité des alésages (8) d'axe, des canaux de refroidissement (13) des bossages qui communiquent avec le canal de refroidissement (9) pour améliorer le refroidissement des bossages (7) de l'axe du piston.
EP06828686A 2005-12-21 2006-12-15 Piston pour moteur a combustion interne et procede de fabrication dudit piston Withdrawn EP1963655A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005061075A DE102005061075A1 (de) 2005-12-21 2005-12-21 Kolben für einen Verbrennungsmotor und Verfahren zu dessen Herstellung
PCT/DE2006/002255 WO2007073719A1 (fr) 2005-12-21 2006-12-15 Piston pour moteur a combustion interne et procede de fabrication dudit piston

Publications (1)

Publication Number Publication Date
EP1963655A1 true EP1963655A1 (fr) 2008-09-03

Family

ID=37890265

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06828686A Withdrawn EP1963655A1 (fr) 2005-12-21 2006-12-15 Piston pour moteur a combustion interne et procede de fabrication dudit piston

Country Status (8)

Country Link
US (1) US7921555B2 (fr)
EP (1) EP1963655A1 (fr)
JP (1) JP2009520901A (fr)
KR (1) KR20080080546A (fr)
CN (1) CN101331309B (fr)
BR (1) BRPI0620283A2 (fr)
DE (1) DE102005061075A1 (fr)
WO (1) WO2007073719A1 (fr)

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DE102007044105A1 (de) * 2007-04-27 2008-10-30 Mahle International Gmbh Gießkern zur Bildung eines Kühlkanals in einem gießtechnisch hergestellten Kolben
DE102008020231A1 (de) * 2008-04-22 2009-10-29 Mahle International Gmbh Gießkern zur Bildung eines Kühlkanals
DE102008002571A1 (de) * 2008-06-20 2009-12-31 Federal-Mogul Nürnberg GmbH Kolben für einen Verbrennungsmotor
DE102008031863A1 (de) * 2008-07-05 2010-01-07 Mahle International Gmbh Einlegeteil für einen Kolben eines Verbrennungsmotors sowie mit dem Einlegeteil versehener Kolben oder Kolbenkopf
KR101417117B1 (ko) 2008-10-22 2014-08-07 두산인프라코어 주식회사 피스톤 냉각 장치
DE102009027148B4 (de) * 2009-06-24 2015-02-12 Federal-Mogul Nürnberg GmbH Kolben für einen Verbrennungsmotor mit Kühlkanalsystem
US8210234B2 (en) * 2010-02-19 2012-07-03 GM Global Technology Operations LLC Combustion chamber wall cooling chamber design for semi-permanent mold cylinder head casting
DE102010015568A1 (de) * 2010-04-19 2011-10-20 Ks Kolbenschmidt Gmbh Kolbenoberteil eines gebauten oder geschweißten Kolbens mit erweiterten Kühlräumen
CN102218641A (zh) * 2010-04-19 2011-10-19 昆山广兴电子有限公司 金属扇框的制造方法
DE102011114105A1 (de) * 2010-12-18 2012-06-21 Mahle International Gmbh Kolben für einen Verbrennungsmotor und Verfahren zu seiner Herstellung
CN102151794B (zh) * 2011-02-23 2013-10-23 江苏大学 一种活塞重力铸造方法及装置
WO2012142433A1 (fr) * 2011-04-15 2012-10-18 Federal-Mogul Corporation Piston et procédé de fabrication d'un piston
US8863647B2 (en) * 2011-05-04 2014-10-21 GM Global Technology Operations LLC Oil gallery piston with improved thermal conductivity
DE102011106655A1 (de) * 2011-07-05 2013-01-10 Mahle International Gmbh Verfahren zur Herstellung eines Kolbens für einen Verbrennungsmotor
CN102407289B (zh) * 2011-11-23 2013-10-09 广州南鸥卫浴用品有限公司 一种弯曲锌合金铸件重力铸造浇口结构
CN103423015A (zh) * 2012-05-15 2013-12-04 安徽华菱汽车有限公司 一种内燃机及其活塞
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GB2523698B (en) * 2013-12-10 2020-06-03 Steyr Motors Betr Gmbh Engine block of a diesel engine with integrally cast cylinder head and casting method
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KR101655571B1 (ko) * 2014-11-17 2016-09-08 현대자동차주식회사 금형 코어 고정 방법 및 코어 고정 캡
KR20160119970A (ko) 2015-04-07 2016-10-17 동양피스톤 주식회사 세라믹 코어를 이용한 스틸 피스톤 제조방법
DE102015213689A1 (de) * 2015-07-21 2017-01-26 Federal-Mogul Nürnberg GmbH Kolben für einen Verbrennungsmotor
US10036346B2 (en) 2015-09-10 2018-07-31 Ford Global Technologies, Llc Lubrication circuit and method of forming
US10227948B2 (en) * 2015-12-18 2019-03-12 Mahle International Gmbh Piston for an internal combustion engine
CN105756801A (zh) * 2016-01-29 2016-07-13 马勒技术投资(中国）有限公司 一种适应高爆压的含双铸铁圈及内冷油道的汽油机活塞
KR101934941B1 (ko) * 2016-05-02 2019-01-04 동양피스톤 주식회사 내연 기관용 피스톤 및 냉각 채널 코어
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Also Published As

Publication number Publication date
KR20080080546A (ko) 2008-09-04
BRPI0620283A2 (pt) 2011-11-08
CN101331309B (zh) 2010-12-08
JP2009520901A (ja) 2009-05-28
WO2007073719A1 (fr) 2007-07-05
CN101331309A (zh) 2008-12-24
US7921555B2 (en) 2011-04-12
DE102005061075A1 (de) 2007-06-28
US20090025550A1 (en) 2009-01-29

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