EP1924765A1 - Piston, en particulier piston a canal de refroidissement d'un moteur a combustion interne, comportant au moins trois zones de soudure par friction - Google Patents

Piston, en particulier piston a canal de refroidissement d'un moteur a combustion interne, comportant au moins trois zones de soudure par friction

Info

Publication number
EP1924765A1
EP1924765A1 EP05783061A EP05783061A EP1924765A1 EP 1924765 A1 EP1924765 A1 EP 1924765A1 EP 05783061 A EP05783061 A EP 05783061A EP 05783061 A EP05783061 A EP 05783061A EP 1924765 A1 EP1924765 A1 EP 1924765A1
Authority
EP
European Patent Office
Prior art keywords
piston
cooling channel
joining
parts
channel piston
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Withdrawn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
EP05783061A
Other languages
German (de)
English (en)
Inventor
Volker Gniesmer
Gerhard Luz
Emmerich Ottlickzky
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 EP1924765A1 publication Critical patent/EP1924765A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • 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

  • Piston in particular cooling channel piston of an internal combustion engine with at least three Reibsch spacialn
  • the invention relates to a piston, in particular a cooling channel piston, an internal combustion engine according to the features of the preamble of patent claim 1.
  • a cooling channel piston is known from US 6,155,157.
  • a first and a second part are produced separately from each other and then joined together by means of a joining process (here Reibsch dipleton) to form a one-piece cooling channel piston, which forms a cooling passage for the circulation of a cooling medium approximately behind its ring field.
  • the invention is therefore based on the object to further develop the known cooling channel piston so that in the design of the piston with its known and already listed elements greater design freedom is given ben.
  • the cooling channel piston has at least a third part, the third part also having at least one rotationally symmetrical joining region in the direction of the first part and at least one rotationally symmetrical joining region in the direction of the second part, and these joining regions of the third part with joining regions of the first part and second part correspond.
  • a part made of a material which is more heat-resistant than the material of which the other parts are made can be used. Additionally or alternatively, it is possible to produce the at least three parts in the same process or in different processes.
  • the joining process is in a particularly advantageous manner a friction welding process, since this makes it possible to machine all three joining regions simultaneously and thus to non-releasably bond the at least three parts together.
  • the parts may be made in the same or different processes (such as forging, casting, pressing, extrusion, stamping, and the like), which may then be of the same or different materials.
  • one part may consist of a more heat-resistant material than the other part (for the purpose of reinforcement, in particular of the trough edge and / or the surface of the piston crown).
  • Weight aspects also play a role here.
  • the at least one part of a lightweight material such as aluminum
  • the at least further part of a ferrous material for example, gray cast iron
  • the at least three parts After the at least three parts have been produced independently, they are joined together by means of a joining process, in particular by means of a friction welding process. It should be remembered that first two parts are joined and then the third part is added. It is also conceivable the simultaneous assembly of all three parts, which is more complex compared to the successive joining.
  • the joining of initially two parts also has the advantage that at least a part or even all parts of the joining area are freely accessible in order to be processed and further treated. In the processing of the joining region, in particular the removal of a joining burr is intended, while in the further treatment, for example, the application of a protective layer or the like may be mentioned. Is it?
  • the mutually directed joining regions between the third and the first part are arranged in at least one joining plane and the mutually facing joining regions between the third and the first part in at least one deviating plane.
  • This also results in greater freedom in the design of the individual parts and their functions of the cooling channel piston, which also takes into account the production engineering aspects in a particularly advantageous manner.
  • the joint areas of the respective two parts which are formed in a particularly advantageous manner as rotationally symmetrical joints, can be designed such that in a first process step two parts are optimally assembled and then in a next process step the further part is added to this partial combination can be.
  • the three parts of the cooling channel piston are designed such that they form at least one lying behind a ring field of the cooling channel piston cooling channel after their joining. This also expresses the fact that the at least three parts are designed and thus joined together. that they together form the lying behind the annular field of the cooling channel piston cooling channel.
  • all three parts of the cooling channel piston contribute to the formation of the cooling channel. It should be mentioned at this point that a part which closes this cooling channel after opening its cooling channel does not fall under the concept of the first, second or third part here. Because in the claimed here at least three parts are essential components of the cooling channel piston.
  • cooling channel pistons designed according to the invention are described below and explained with reference to FIGS. 1 to 7.
  • FIG. 1 shows a first exemplary embodiment of a cooling channel piston according to the invention
  • FIG. 2 shows a second embodiment of a cooling channel piston according to the invention
  • FIG. 3 shows a third exemplary embodiment of a cooling channel piston according to the invention
  • FIG. 4 shows a fourth exemplary embodiment of a cooling channel piston according to the invention
  • FIG. 5 shows a fifth exemplary embodiment of a cooling channel piston according to the invention
  • FIG. 6 shows a sixth exemplary embodiment of a cooling channel piston according to the invention
  • Figure 7 shows a seventh embodiment of a cooling channel piston according to the invention.
  • Figure 1 shows in half a sectional view of a piston, here a cooling channel piston 1 of an internal combustion engine having a first part 2 (piston crown) and a second part 3 (piston lower part). Furthermore, in a manner known per se, a combustion chamber guide 4, a radially encircling annular field 5 (here with three annular grooves), a bore bore 6 and a piston skirt 7 are provided.
  • a third part 8 is provided, which is formed as an intermediate part between the first part 2 and the second part 3.
  • the three parts 2, 3 and 8 are designed such that they form at least one approximately behind the ring field 5 of the cooling channel piston 1 lying cavity or cooling channel after their joining, will be discussed later .
  • the first part 2 has joining areas 9, 10, which point in the direction of joining areas 12, 13 of the third part 8 and thus correspond with them.
  • the second part 3 has joining areas 14, 15 which point in the direction of joining areas 16, 17 of the third part 8. All joining areas 10 to 17, which are designed here as radially circumferential joining webs, have in common that they are matched to one another in terms of their arrangement to one another, in particular as regards the position in the respective plane and its width.
  • the joining regions 9, 12 lie in a first joining plane 18, the joining regions 10, 13 in a second joining plane 19 and the joining regions 14, 16 and 15, 17 in a common third joining plane 20, it also being conceivable that the Joining areas 14, 16 and 15, 17 lie in different joining planes, just as the first joining plane 18 and the second joining plane 19 can be arranged in one and the same joining plane.
  • the reference numeral 23 is still a below the combustion chamber 4 existing inner region 23 of the cooling channel piston 1, wherein those constructive measures have not been shown in the drawing, the supply and the flow of cooling medium to the at least one cooling channel 21, 22 and the process dar- put.
  • Such measures (such as openings, bores and the like) are known per se and can after the joining of the three parts 2, 3, 8 are introduced. With regard to the joining of the three parts 2, 3, 8 is still to be stated that these parts separately from each other from the same material or from different materials in one and the same manufacturing process or in manufactured divergent methods and then assembled.
  • the third part 8 is joined together with the second part 3 in a friction welding process, so that the joints can be processed (but not necessarily) within the cooling channel 21 which is still open at the time.
  • the joining of the then already assembled parts 3, 8 with the first part 2 is carried out in an advantageous manner also in a friction welding, whereby here too the joints can be processed (but also not have).
  • the processing of the joints is then considered when they are in places that are disturbing for the subsequent operation of the cooling channel piston 1.
  • the joints on the outer surface (running surface) of the cooling channel piston 1 are being removed.
  • FIG. 2 shows a further embodiment of the cooling channel piston with the three parts 2, 3, 8, in which case the two joining regions 10, 13 in the first joining plane 18 and the further joining regions 9, 14 and 15, 17 in the second joining plane 19 correspond to one another.
  • the above statements apply as already to FIG. 1.
  • Figure 3 shows a third embodiment of the cooling channel piston 1, wherein here the first part 2 is designed such that it forms only a part of the combustion chamber 4 (in contrast to Figure 2, where the first part 2, the combustion chamber 4 completely covered).
  • the design form of the first part 2 shown in FIG. 3 has the advantage that it can be produced, in particular, from a heat-resistant material than the part 8, in order thus to make the piston crown and, above all, the peripheral edge of the combustion bowl 4 more heat-resistant in these areas a special load of the cooling channel piston 1 is given. Due to this configuration of the parts 2, 3 and 8, the joining regions 9, 14 and 10, 13 in the first joining plane 18 and the joining regions 15, 17 in the second joining plane correspond to each other and are designed so that only one kuhikanal 21 after assembly results.
  • Figure 4 shows a fourth embodiment of the cooling channel piston 1, in turn, the parts 2, 3, 8 together form the cooling channel 21, in which case the third part 8 as a connecting part between the first part 2 and the second part 3 in the area of the ring field 5 is formed.
  • the joining regions 9, 12 in the first joining plane 18, the joining regions 10, 15 in the second joining plane 19 and the joining regions 14, 16 in the third joining plane 20 correspond to one another. Again, it is clearly visible that the mutually facing joining areas of the respective parts in position and shape match each other.
  • FIG. 5 shows a modification of FIG. 4, in which case the first part 2 and the second part 3 are designed so that the joining regions 14, 16 and 15, 19 lie together in the second joining plane 19 and a third joining plane is absent.
  • Figures 6 and 7 show the piston or cooling channel piston 1, in which at least one of the parts 2, 3, 8 is formed as a reinforcement for a partial surface of the piston or the cooling channel piston 1.
  • the part 8 is designed as reinforcement for a base and in FIG. 7 as reinforcement for the trough edge of the combustion chamber trough 4 of the piston or of the cooling channel piston (1). Also this part 8 is permanently attached, in particular in Reibschweissclar.
  • First joining plane 20 18. Second joining plane

Landscapes

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

Abstract

Piston, en particulier piston (1) à canal de refroidissement d'un moteur à combustion interne, composé d'une première partie (2), d'une deuxième partie (3) et d'une troisième partie (8) qui peuvent être fabriquées séparément les unes des autres et qui peuvent ensuite être jointes à l'aide d'un procédé d'assemblage. Une partie, en particulier la troisième partie (8), possède d'une part au moins une zone de jonction à symétrie de rotation, en direction d'une partie, en particulier de la première partie (2), et d'autre part également au moins une zone de jonction à symétrie de rotation en direction d'une partie, en particulier de la deuxième partie (3). Ces zones de jonction correspondent à des zones de jonction des deux parties, en particulier de la première partie (2) et de la deuxième partie (3).
EP05783061A 2005-09-17 2005-09-17 Piston, en particulier piston a canal de refroidissement d'un moteur a combustion interne, comportant au moins trois zones de soudure par friction Withdrawn EP1924765A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2005/010063 WO2007031109A1 (fr) 2005-09-17 2005-09-17 Piston, en particulier piston a canal de refroidissement d'un moteur a combustion interne, comportant au moins trois zones de soudure par friction

Publications (1)

Publication Number Publication Date
EP1924765A1 true EP1924765A1 (fr) 2008-05-28

Family

ID=36177618

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05783061A Withdrawn EP1924765A1 (fr) 2005-09-17 2005-09-17 Piston, en particulier piston a canal de refroidissement d'un moteur a combustion interne, comportant au moins trois zones de soudure par friction

Country Status (3)

Country Link
US (1) US20080245231A1 (fr)
EP (1) EP1924765A1 (fr)
WO (1) WO2007031109A1 (fr)

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DE102008011922A1 (de) 2008-02-29 2009-09-03 Ks Kolbenschmidt Gmbh Kolben für Brennkraftmaschinen, hergestellt mittels eines Multi-Orbitalen Reibschweißverfahrens
US9238283B2 (en) * 2008-07-24 2016-01-19 Ks Kolbenschmidt Gmbh Friction welded steel piston having optimized cooling channel
US9293849B2 (en) * 2008-07-30 2016-03-22 Bal Seal Engineering, Inc. Electrical connector using a canted coil multi-metallic wire
DE102008055848A1 (de) 2008-11-04 2010-05-06 Ks Kolbenschmidt Gmbh Kühlkanalkolben einer Brennkraftmaschine mit einem Verschlusselement, das den Kühlkanal verschließt
US20100289198A1 (en) * 2009-04-28 2010-11-18 Pete Balsells Multilayered canted coil springs and associated methods
DE102009059658A1 (de) * 2009-12-19 2011-06-22 MAHLE International GmbH, 70376 Verfahren zur Herstellung eines Kolbens für einen Verbrennungsmotor sowie mittels dieses Verfahrens herstellbarer Kolben
DE102010043124A1 (de) * 2010-10-29 2012-05-03 Federal-Mogul Nürnberg GmbH Kolben für einen Verbrennungsmotor
US8844126B2 (en) 2010-12-23 2014-09-30 Bal Seal Engineering, Inc. Method of manufacturing an electrical connector
DE102011012758A1 (de) * 2011-03-01 2012-09-06 Ks Kolbenschmidt Gmbh Gekühlter Kolben und Verfahren zu dessen Herstellung
US9702317B2 (en) * 2013-08-29 2017-07-11 Federal-Mogul Llc Double welded steel piston with full skirt
DE102017101131A1 (de) * 2016-01-22 2017-07-27 Ks Kolbenschmidt Gmbh Kolben mit drei Ringnuten und einer weiteren Nut aufweisend eine Trennfuge
DE102019215486A1 (de) 2019-10-09 2021-04-15 Mahle International Gmbh Kolben für eine Brennkraftmaschine

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GB1277579A (en) * 1968-07-15 1972-06-14 Wellworthy Ltd Pistons
DE2230722C3 (de) * 1972-06-23 1981-12-24 Mahle Gmbh, 7000 Stuttgart Brennkraftmaschinenkolben, insbesondere für Dieselmaschinen, mit einem Unterteil und einem mit diesem lösbar verbundenen Oberteil
DE2537182A1 (de) * 1975-08-21 1977-03-03 Motoren Turbinen Union Kolben
GB8413800D0 (en) * 1984-05-30 1984-07-04 Ae Plc Manufacture of pistons
BR9005370A (pt) * 1990-10-18 1992-06-16 Metal Leve Sa Processo de fabricacao de embolo refrigerado
US6155157A (en) * 1998-10-06 2000-12-05 Caterpillar Inc. Method and apparatus for making a two piece unitary piston
EP1084793A1 (fr) * 1999-09-20 2001-03-21 Riken Forge Co., Ltd Procédé de fabrication de piston pour moteur à combustion interne
WO2001050042A1 (fr) * 1999-12-30 2001-07-12 Federal-Mogul Corporation Piston a jupe decouplee
US6675761B2 (en) * 2002-01-30 2004-01-13 Caterpillar Inc Ring band for a piston
DE102004038465A1 (de) * 2004-08-07 2006-02-23 Ks Kolbenschmidt Gmbh Kolben, insbesondere Kühlkanalkolben einer Brennkraftmaschine, mit zumindest drei Reibschweißzonen

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Also Published As

Publication number Publication date
US20080245231A1 (en) 2008-10-09
WO2007031109A1 (fr) 2007-03-22

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