EP2655840A2 - Piston pour moteur à combustion interne - Google Patents

Piston pour moteur à combustion interne

Info

Publication number
EP2655840A2
EP2655840A2 EP11833595.9A EP11833595A EP2655840A2 EP 2655840 A2 EP2655840 A2 EP 2655840A2 EP 11833595 A EP11833595 A EP 11833595A EP 2655840 A2 EP2655840 A2 EP 2655840A2
Authority
EP
European Patent Office
Prior art keywords
piston
closure element
piston component
support flange
component
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
EP11833595.9A
Other languages
German (de)
English (en)
Other versions
EP2655840B1 (fr
Inventor
Rainer Scharp
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 EP2655840A2 publication Critical patent/EP2655840A2/fr
Application granted granted Critical
Publication of EP2655840B1 publication Critical patent/EP2655840B1/fr
Not-in-force 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
    • 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

Definitions

  • the present invention relates to a piston for an internal combustion engine having a first piston component and a second piston component, wherein the first piston component and the second piston component form a peripheral cooling channel open to the second piston component, which is closed by means of a peripheral closure element.
  • Pistons with such a cooling channel are known per se.
  • the cooling channel of such a piston is closed by means of a circumferential, two-part sheet metal ring.
  • the disadvantage of this arrangement is that two loosely additional components for the preparation of the cooling channel are required.
  • the object of the present invention is therefore to design a piston with such a cooling channel so that its production is simplified.
  • the solution consists in that the closure element is connected to the first piston component and extends radially in the direction of the second piston component, that the second piston component has a circumferential support flange extending radially in the direction of the first piston component and that the closure element rests on the support flange or the closure element is supported with a peripheral lower edge on an end face of the support flange.
  • the closure element is designed as a structural element of the first piston component.
  • a ring plate for closing the cooling channel is no longer needed, so that an assembly step for the production of the piston according to the invention is eliminated and the piston no longer has loose components.
  • the closure element is preferably formed integrally with the first piston component to further simplify the manufacturing process.
  • the closure element can also be produced as a separate component and firmly connected to the first piston component.
  • the support flange is integral with the second piston component.
  • the radial width of the closure element and the support flange can be sized equal or different sizes.
  • the radial width of the support flange can be greater than the radial width of the closure element.
  • the closure element is biased on the support flange to seal the cooling channel particularly reliable.
  • the end face of the support flange is arranged inclined in the direction of the closure element in order to optimize the sealing of the cooling channel.
  • the closure element and the support flange can also be connected to each other by means of a joining process, for example. Welding or soldering.
  • At least one coolant inlet opening and at least one coolant outlet opening are expediently provided in the closure element and / or in the support flange.
  • the first and second piston components are preferably connected to one another by means of a friction welding process.
  • the first piston component is a piston ring element which has at least a part of a piston crown, a circumferential crown land and a circumferential annular band provided with annular grooves.
  • the closure element is connected to the first piston component in the region of a lower free end of the annular band.
  • the first piston component may have a combustion bowl.
  • the first piston component can also have at least one wall region of a combustion chamber recess, while the second piston component has at least one bottom region of a combustion chamber recess.
  • the second piston component is preferably designed as a piston main body, particularly preferably for a box piston, which has at least one piston shaft with piston hubs which are provided with hub bores.
  • the piston skirt is thermally decoupled from the ring band.
  • Figure 1 shows an embodiment of a piston according to the invention in section
  • Figure 2 shows another embodiment of a piston according to the invention in
  • FIG. 3 shows another embodiment of a piston according to the invention in
  • Figure 4 is a detail view of another embodiment of a piston according to the invention in section.
  • FIG. 1 shows a first exemplary embodiment of a piston 10 according to the invention.
  • the piston 10 consists of a first piston component 11 and a second piston component 12.
  • the first piston component 11 is designed as a piston ring element and the second piston component 12 as a piston main body for a piston box.
  • Other divisions are also conceivable as long as the ring band 15 (see below) at least in the region of its free end 24 - -
  • first piston member 11 (see below) is formed by the first piston member 11. Both components can be made of any suitable metallic material.
  • the first piston component 11 has a piston bottom 13 and a circumferential top land 14 and a circumferential annular band 15 with annular grooves for receiving piston rings (not shown).
  • the first piston component 11 also forms a wall region 16 'of a combustion bowl 16.
  • the second piston member 12 forms in the present embodiment, a thermally decoupled from the annular band 15 piston skirt 17, which is provided in a conventional manner with hubs 18 and hub bores 19 for receiving a piston pin (not shown).
  • the hubs 18 are connected to each other via running surfaces 21.
  • the second piston component 12 also forms a bottom region 16 "of the combustion bowl 16.
  • the hubs 18 are connected via hub connections 22 on the underside of the combustion bowl 16.
  • the first piston component 11 and the second piston component 12 are connected to one another via a joining seam 27, in the exemplary embodiment by means of friction welding.
  • the joining seam 27 is arranged in the exemplary embodiment in the region of the combustion chamber trough 16.
  • this is not mandatory; It is essential that the annular band 15 is formed by the first piston component 11 at least in the area of its free end 24 (see below).
  • the annular band 15 has a closure element 25 at its free lower end 24.
  • the closure element 25 extends radially in the direction of the second piston component 12 and, in the exemplary embodiment, is connected in one piece with the free end 24 of the annular band 15 of the first piston component 11.
  • the second piston component 1, in the exemplary embodiment approximately at the level of the hub connections 22, has a peripheral bearing flange 26, which is integral with the second piston component 12. - -
  • the closure element 25 and the support flange 26 are dimensioned such that after the joining of the first piston component 11 and the second piston component 12, the closure element 25 rests on the support flange 26.
  • the closure element 25 can in this case rest tension-free or under pretension on the support flange 26. In the latter case, a particularly reliable sealing of the cooling channel 23 is given.
  • the closure element 25 and the support flange 26 may also be joined together by joining, for example. Welding or soldering.
  • the radial brette of the closure member 25 is sized larger than the radial width of the support flange 26 and extends in this particular case almost over the entire cross section of the cooling channel 23. Therefore, the openings 28 for access or the process of the coolant introduced in the closure element 25.
  • FIG. 2 shows a further exemplary embodiment of a piston 110 according to the invention.
  • the piston 110 largely corresponds to the piston 10 according to FIG. 1, so that the same reference numerals are provided for the same structural elements and reference is made to the description of FIG.
  • the support flange 126 extends over almost the entire cross section of the cooling channel 23. Therefore, the Openings 28 for the access and the drain of the coolant introduced in the support flange 126.
  • FIG. 3 shows a further exemplary embodiment of a piston 210 according to the invention.
  • the piston 210 largely corresponds to the piston 10 according to FIG. 1, so that the same reference numerals are provided for the same structural elements and reference is made to the description of FIG.
  • the radial width of the closure element 225 is approximately equal to the radial - - len width of the support flange 226 corresponds. Therefore, the openings 28 for the access and the discharge of the coolant are introduced both in the closure element 225 and in the support flange 226.
  • FIG. 4 shows a detailed view of a further exemplary embodiment of a piston 310 according to the invention.
  • the piston 310 largely corresponds to the piston 10 according to FIG. 1, so that the same reference numerals are provided for the same structural elements and reference is made to the description of FIG.
  • the closure element 325 has a circumferential lower edge 329 and the support flange 326 has an end face 331.
  • the end face 331 of the support flange 326 is arranged inclined in the direction of the closure element 325.
  • the circumferential lower edge 329 of the closure element 325 is supported, possibly under prestress, on the end face 331 of the support flange 326.
  • the openings 28 for the access or the discharge of the coolant are in this case introduced into the closure element 325.

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

La présente invention concerne un piston (10, 110, 210) pour moteur à combustion interne, comprenant un premier élément de piston (11) et un second élément de piston (12), le premier élément de piston (11) et le second élément de piston (12) formant un canal de refroidissement (23) périphérique, lequel canal est ouvert en direction du second élément de piston et fermé au moyen d'un élément de fermeture périphérique. Selon l'invention, l'élément de fermeture (25, 125, 225) est relié au premier élément de piston 11) et s'étend radialement en direction du second élément de piston (12); le second élément de piston (12) comporte un rebord d'appui (26, 126, 226) périphérique, qui s'étend radialement en direction du premier élément de piston (11), et l'élément de fermeture (25, 125, 225) repose sur le rebord d'appui (26, 126, 226) ou ledit élément de fermeture (325) s'appuie sur une face frontale (331) du rebord d'appui (326) par un bord inférieur (329) périphérique.
EP11833595.9A 2010-12-24 2011-12-15 Piston pour moteur à combustion interne Not-in-force EP2655840B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010056218A DE102010056218A1 (de) 2010-12-24 2010-12-24 Kolben für einen Verbrennungsmotor
PCT/DE2011/002129 WO2012083929A2 (fr) 2010-12-24 2011-12-15 Piston pour moteur à combustion interne

Publications (2)

Publication Number Publication Date
EP2655840A2 true EP2655840A2 (fr) 2013-10-30
EP2655840B1 EP2655840B1 (fr) 2015-06-03

Family

ID=45974186

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11833595.9A Not-in-force EP2655840B1 (fr) 2010-12-24 2011-12-15 Piston pour moteur à combustion interne

Country Status (5)

Country Link
US (1) US20120160203A1 (fr)
EP (1) EP2655840B1 (fr)
CN (1) CN203604062U (fr)
DE (1) DE102010056218A1 (fr)
WO (1) WO2012083929A2 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2900992A1 (fr) * 2012-09-27 2015-08-05 KS Kolbenschmidt GMBH Piston en deux parties pour moteur à combustion interne
WO2014057160A1 (fr) * 2012-10-08 2014-04-17 Componenta Finland Oy Piston pour un moteur à combustion interne
DE102013009164A1 (de) * 2013-05-31 2014-12-04 Mahle International Gmbh Kolben für einen Verbrennungsmotor
DE102013009161A1 (de) 2013-05-31 2014-12-18 Mahle International Gmbh Kolben für einen Verbrennungsmotor
JP6359129B2 (ja) 2014-07-02 2018-07-18 カーエス コルベンシュミット ゲゼルシャフト ミット ベシュレンクテル ハフツングＫＳ Ｋｏｌｂｅｎｓｃｈｍｉｄｔ ＧｍｂＨ 素材結合により接合されるクーリングチャンネル付きピストンにおける間隙幾何学形状
CN104747312A (zh) * 2015-02-16 2015-07-01 山东滨州渤海活塞股份有限公司 带内冷油腔结构的内燃机活塞及内燃机
CN104776221A (zh) * 2015-03-17 2015-07-15 尹建 往复活塞链式连杆无死点发动机活塞连杆组
EP3452712A1 (fr) 2016-05-04 2019-03-13 KS Kolbenschmidt GmbH Piston
CN106979329A (zh) * 2017-05-23 2017-07-25 湖南江滨机器（集团）有限责任公司 一种全钢活塞
DE102019215486A1 (de) * 2019-10-09 2021-04-15 Mahle International Gmbh Kolben für eine Brennkraftmaschine

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BR9001859A (pt) * 1990-04-17 1991-11-12 Metal Leve Sa Processo de fabricacao de embolo e embolo
US6588320B2 (en) * 1999-12-30 2003-07-08 Federal-Mogul World Wide, Inc. Piston having uncoupled skirt
DE10040486C2 (de) * 2000-08-18 2002-10-31 Ks Kolbenschmidt Gmbh Stahlkolben
DE10047258C2 (de) * 2000-09-23 2003-02-06 Ks Kolbenschmidt Gmbh Kolben mit sich am Basisteil abstützenden und angeschweißtem Ringabschnitt
DE10132447A1 (de) * 2001-07-04 2003-01-09 Ks Kolbenschmidt Gmbh Kolben mit angeschweißter Abdeckung des Kühlkanals
DE10244511A1 (de) * 2002-09-25 2004-04-15 Mahle Gmbh Mehrteiliger gekühlter Kolben für einen Verbrennungsmotor
DE102004057624A1 (de) * 2004-11-30 2006-06-01 Mahle International Gmbh Mehrteiliger, gekühlter Kolben für einen Verbrennungsmotor
PL1984613T3 (pl) * 2006-02-17 2018-04-30 Ks Kolbenschmidt Gmbh Wieloczęściowy tłok stalowy do silnika spalinowego z kanałem chłodzącym
US20070283917A1 (en) * 2006-06-12 2007-12-13 Lapp Michael T Piston for a combustion engine
DE102007031400A1 (de) * 2007-07-05 2009-01-08 Ks Kolbenschmidt Gmbh Einteiliger Kühlkanalkolben mit zwei miteinander verschraubten Kolbenteilen
DE102007036236A1 (de) * 2007-08-02 2009-02-05 Mahle International Gmbh Gebauter Kolben
JP4510061B2 (ja) * 2007-09-18 2010-07-21 理研鍛造株式会社 内燃機関用ピストンの製造方法
DE102007061601A1 (de) * 2007-12-20 2009-06-25 Mahle International Gmbh Kolben für einen Verbrennungsmotor sowie Verfahren zu seiner Herstellung
DE102008038325A1 (de) * 2007-12-20 2009-06-25 Mahle International Gmbh Verfahren zum Befestigen eines Ringelementes auf einem Kolben für einen Verbrennungsmotor
US8807109B2 (en) * 2009-11-06 2014-08-19 Federal-Mogul Corporation Steel piston with cooling gallery and method of construction thereof

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Also Published As

Publication number Publication date
WO2012083929A2 (fr) 2012-06-28
WO2012083929A3 (fr) 2012-10-04
DE102010056218A1 (de) 2012-06-28
US20120160203A1 (en) 2012-06-28
EP2655840B1 (fr) 2015-06-03
CN203604062U (zh) 2014-05-21

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