EP2486263A1 - Piston for an internal combustion engine, and internal combustion engine having a piston - Google Patents

Piston for an internal combustion engine, and internal combustion engine having a piston

Info

Publication number
EP2486263A1
EP2486263A1 EP10752751A EP10752751A EP2486263A1 EP 2486263 A1 EP2486263 A1 EP 2486263A1 EP 10752751 A EP10752751 A EP 10752751A EP 10752751 A EP10752751 A EP 10752751A EP 2486263 A1 EP2486263 A1 EP 2486263A1
Authority
EP
European Patent Office
Prior art keywords
piston
recess
internal combustion
combustion engine
lower edge
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
EP10752751A
Other languages
German (de)
French (fr)
Other versions
EP2486263B2 (en
EP2486263B1 (en
Inventor
Marcus Freidhager
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.)
Federal Mogul Nuernberg GmbH
Original Assignee
Federal Mogul Nuernberg 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=43086964&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2486263(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Federal Mogul Nuernberg GmbH filed Critical Federal Mogul Nuernberg GmbH
Priority to PL10752751T priority Critical patent/PL2486263T4/en
Publication of EP2486263A1 publication Critical patent/EP2486263A1/en
Application granted granted Critical
Publication of EP2486263B1 publication Critical patent/EP2486263B1/en
Publication of EP2486263B2 publication Critical patent/EP2486263B2/en
Active 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

Abstract

A piston for an internal combustion engine has, on the lower edge thereof opposite the piston crown, at least one cutout formed in the radial direction. An internal combustion engine is provided with at least one such piston.

Description

Kolben für einen Verbrennungsmotor und Verbrennungsmotor mit einem Kolben  Piston for an internal combustion engine and internal combustion engine with a piston
TECHNISCHES GEBIET TECHNICAL AREA
Die Erfindung betrifft einen Kolben für einen The invention relates to a piston for a
Verbrennungsmotor sowie einen Verbrennungsmotor mit einem Kolben. Internal combustion engine and an internal combustion engine with a piston.
Auf dem Gebiet der Verbrennungsmotoren, in denen sich Kolben in Zylindern oder Zylinderlaufbuchsen bewegen und zusammen mit weiteren Komponenten den Brennraum definieren, ist es unter bestimmten Umständen üblich, die Kolben mit In the field of internal combustion engines, in which pistons move in cylinders or cylinder liners and define together with other components the combustion chamber, it is common in certain circumstances, the piston with
beispielsweise ringförmigen Kühlkanälen zu versehen, und in diese mittels einer oder mehreren Düsen Kühlmittel, For example, to provide annular cooling channels, and in this by means of one or more nozzles coolant,
beispielsweise Kühlöl, einzuspritzen. Es versteht sich, dass es unter keinen Umständen zu einem zu geringen Freiraum zwischen der Kühlöldüse und jeglichen Teilen des Kolbens oder sogar einer Kollision zwischen diesen Bauteilen kommen darf. Dementsprechend ist es bislang erforderlich, das Kolbendesign an gegebenenfalls geänderte Positionen der Kühlöldüsen anzupassen. Dies kann wirtschaftlich deshalb besonders aufwändig sein, weil vollständige Gusswerkzeuge neu erzeugt werden müssen. For example, cooling oil to inject. It will be understood that under no circumstances may there be too little clearance between the cooling oil nozzle and any parts of the piston or even a collision between these components. Accordingly, it has hitherto been necessary to adapt the piston design to optionally changed positions of the cooling oil nozzles. This can be particularly costly because economic because complete casting tools must be recreated.
STAND DER TECHNIK STATE OF THE ART
Aus der WO 2006/014741 A2 ist ein Kolben für einen From WO 2006/014741 A2 is a piston for a
Verbrennungsmotor bekannt, bei dem am unteren Rand des Internal combustion engine known at the bottom of the
Kolbenschaftes eine in Richtung der Kolbenachse, das heißt in axialer Richtung ausgebildete Kerbe vorhanden ist. Dies dient der Aufnahme einer Kühlöldüse oder einer Zuleitung hierzu, insbesondere im unteren Todpunkt des Kolbens. DARSTELLUNG DER ERFINDUNG Piston shaft in the direction of the piston axis, that is formed in the axial direction notch is present. This serves to receive a cooling oil nozzle or a supply line for this purpose, in particular in the lower dead center of the piston. PRESENTATION OF THE INVENTION
Vor dem oben genannten Hintergrund liegt der Erfindung die Aufgabe zugrunde, einen Kolben für einen Verbrennungsmotor und einen damit ausgerüsteten Verbrennungsmotor zu schaffen, bei denen eine erhöhte Flexibilität im Hinblick auf Against the background mentioned above, the object of the invention is to provide a piston for an internal combustion engine and an internal combustion engine equipped therewith, in which an increased flexibility with regard to
unterschiedliche Positionen von Kühlöldüsen realisiert ist. different positions of cooling oil nozzles is realized.
Die Lösung dieser Aufgabe erfolgt durch den im Anspruch 1 beschriebenen Kolben. The solution to this problem is achieved by the piston described in claim 1.
Demzufolge weist dieser an seinem in Gebrauchsstellung üblicherweise unteren, das heißt dem Kolbenboden, der den Brennraum begrenzt, gegenüberliegenden Rand zumindest eine in radialer Richtung ausgebildete Aussparung auf. Mit anderen Worten ist der durch Schaftwandabschnitte, die im Gebrauch an den Zylinderwänden anliegen, und die Verbindungswände Accordingly, this has at its in use position usually lower, that is, the piston head, which limits the combustion chamber, opposite edge on at least one recess formed in the radial direction. In other words, it is through leg wall portions that abut the cylinder walls in use and the connecting walls
dazwischen definierte "Innenraum" des Kolbens in radialer Richtung erweitert. Diese Erweiterung führt, wenn man den Kolben in axialer Richtung betrachtet, an der Außenseite der Verbindungswand oder -wände, in der die Aussparung between defined "interior" of the piston extended in the radial direction. This extension, when viewed in the axial direction, results in the exterior of the connecting wall or walls in which the recess is located
üblicherweise ausgebildet ist, zu einer Ausbauchung oder Beule. Dies gilt insbesondere, wenn die Wanddicke im Bereich der Aussparung im Wesentlichen gleich ist wie benachbart hierzu. Unabhängig davon kann jedoch auch bei verringerter Wanddicke an der Innenseite die beschriebene Aussparung oder Nische ausgebildet sein, die zusätzlichen Raum für is usually formed, to a bulge or bulge. This is especially true if the wall thickness in the region of the recess is substantially the same as adjacent thereto. Regardless of this, however, the described recess or niche can be formed even with a reduced wall thickness on the inside, the additional space for
unterschiedliche Positionen von Kühlöldüsen schafft. creates different positions of cooling oil nozzles.
Dies führt zu einer Verbesserung verglichen mit einer This leads to an improvement compared to a
Situation, bei der, aus welchen Gründen auch immer, die Situation where, for whatever reason, the
Kühlöldüse ein wenig in radialer Richtung nach außen versetzt wurde, und hierdurch die Gestaltung des Kolbens geändert werden müsste. Bei dem erfindungsgemäßen Kolben ermöglicht die beschriebene Aussparung oder Nische zusätzliche Cooling oil nozzle was offset a little in the radial direction outwards, and thereby the design of the piston would have to be changed. In the piston according to the invention, the described recess or niche allows additional
Kühlölpositionen, so dass die Verwendbarkeit des erfindungsgemäßen Kolbens verbessert, und die Cooling oil positions, so that the usability of the improved piston according to the invention, and the
Wirtschaftlichkeit desselben erhöht wird. Profitability of the same is increased.
Insbesondere hat sich herausgestellt, dass vorhandene In particular, it has been found that existing
Kolbenwerkzeuge zur Ausbildung der Erfindungsgemäßen Piston tools for the formation of the inventive
Aussparung umgebaut werden können, ohne neue Komponenten verwenden zu müssen. Eine Berechnung mittels finiter Elemente hat darüber hinaus die grundsätzliche Machbarkeit des Recess can be rebuilt without having to use new components. A calculation by means of finite elements also has the fundamental feasibility of the
erfindungsgemäßen Kolbens ergeben. inventive piston yield.
Bevorzugte Weiterbildungen sind in den weiteren Ansprüchen beschrieben . Preferred developments are described in the further claims.
Um die Stabilität des Kolbens in seinem unteren Bereich nicht zu gefährden, und gleichzeitig in vorteilhafter Weise den Materialeinsatz zu begrenzen, wird bevorzugt, die In order not to endanger the stability of the piston in its lower region, and at the same time to limit the use of material in an advantageous manner, it is preferred that
Materialdicke an dem die Aussparung begrenzenden Abschnitt in etwa gleich zu den Bereichen benachbart zu der Aussparung auszuführen. Material thickness at the recess limiting portion to perform approximately equal to the areas adjacent to the recess.
Ferner können Einkerbungen oder dergleichen am unteren Rand des Kolbens in vorteilhafter Weise dadurch vermieden werden, dass, wie bevorzugt wird, der untere Rand des Kolbens im Bereich der Aussparung in etwa auf dem gleichen Niveau liegt, wie benachbart hierzu. Furthermore, indentations or the like at the lower edge of the piston can advantageously be avoided in that, as is preferred, the lower edge of the piston in the region of the recess is approximately at the same level as adjacent thereto.
Für eine Tiefe der zumindest Aussparung in radialer Richtung hat sich am unteren Rand des Kolbens ein Wert von ein bis drei Millimeter als günstig erwiesen. For a depth of the at least recess in the radial direction, a value of one to three millimeters has proved favorable at the lower edge of the piston.
Um entsprechende Gestaltungen von Kühlöldüsen zu To appropriate designs of cooling oil nozzles to
berücksichtigen und/oder für einen harmonischen Übergang zu dem Bereich oberhalb der beschriebenen Aussparung zu Consider and / or for a harmonious transition to the area above the recess described
gewährleisten, kann es günstig sein, die Aussparung mit einer Tiefe in radialer Richtung auszubilden, die sich von dem unteren Rand ausgehend in Richtung der Kolbenachse ensure, it may be beneficial to form the recess with a depth in the radial direction, starting from the lower edge in the direction of the piston axis
verringert . Bei ersten Überlegungen im Hinblick auf den praktischen Einsatz des erfindungsgemäßen Kolbens hat sich reduced. At first considerations with regard to the practical use of the piston according to the invention has
herausgestellt, dass eine Ausbildung der beschriebenen pointed out that an education described the
Aussparung auf der Gegendruckseite des Kolbens bevorzugt wird . Recess on the back pressure side of the piston is preferred.
Die Erfindung beschreibt ferner einen Verbrennungsmotor, der neben dem vorangehend beschriebenen Kolben zumindest eine Kühlöldüse aufweist. Für den Abstand zwischen der Kühlöldüse und der beschriebenen Aussparung wird derzeit, um den The invention further describes an internal combustion engine, which has at least one cooling oil nozzle in addition to the previously described piston. For the distance between the cooling oil nozzle and the described recess is currently, to the
Betriebsbedingungen und bestimmten Toleranzen Rechnung zu tragen, ein Wert von zwei Millimeter oder mehr bevorzugt. Operating conditions and certain tolerances, a value of two millimeters or more preferred.
KURZE BESCHREIBUNG DER ZEICHNUNG BRIEF DESCRIPTION OF THE DRAWING
Nachfolgend wird ein Ausführungsbeispiel der Erfindung unter Bezugnahme auf die Zeichnung näher erläutert. An embodiment of the invention will be explained in more detail with reference to the drawing.
Die Figur zeigt eine perspektivische Unteransicht des erfindungsgemäßen Kolbens. The figure shows a perspective bottom view of the piston according to the invention.
AUSFÜHRLICHE BESCHREIBUNG EINER BEVORZUGTEN AUSFÜHRUNGSFORM DER ERFINDUNG DETAILED DESCRIPTION OF A PREFERRED EMBODIMENT OF THE INVENTION
Die Figur zeigt einen erfindungsgemäßen Kolben 10 von seiner dem Kolbenboden 12 entgegengesetzten Unterseite her. Der untere Rand des Kolbens 10 wird hier durch den jeweiligen unteren Rand von Schaftwandabschnitten 14 und The figure shows a piston 10 according to the invention from its underside opposite the piston head 12. The lower edge of the piston 10 is here by the respective lower edge of skirt wall portions 14 and
Verbindungswänden 16 zwischen den Schaftwandabschnitten 14 gebildet. Wie in der Figur zu erkennen ist, ist im Bereich einer Verbindungswand, neben einer Kolbenbolzenbohrung 18 eine in radialer Richtung ausgebildete Aussparung 20 vorhanden. Mit anderen Worten ist bei dem gezeigten Beispiel die Verbindungswand 16 bei weitgehend gleichbleibender Connecting walls 16 formed between the shaft wall portions 14. As can be seen in the figure, in the region of a connecting wall, in addition to a piston pin bore 18, there is a recess 20 formed in the radial direction. In other words, in the example shown, the connecting wall 16 is largely constant
Wandstärke und/oder einem in axialer Richtung auf weitgehend gleichbleibendem Niveau befindlichen Rand in radialer Richtung etwas ausgebaucht, so dass an der Innenseite, das heißt zu der gegenüberliegenden Verbindungswand 16 hin, eine Aussparung oder Wische entsteht. In dieser Aussparung oder Nische kann auch bei veränderter Position eine Kühlöldüse aufgenommen werden, so dass sich die Einsatzmöglichkeit des erfindungsgemäßen Kolbens in wirtschaftlich günstiger Art und Weise verbessert. Wall thickness and / or located in the axial direction at a substantially constant level edge in the radial Direction slightly bulged, so that on the inside, that is, to the opposite connecting wall 16, a recess or wipe is formed. In this recess or niche, a cooling oil nozzle can be accommodated even when the position is changed, so that the possible use of the piston according to the invention improves in an economically favorable manner.

Claims

Patentansprüche claims
1. Kolben (10) für einen Verbrennungsmotor, der an seinem dem Kolbenboden (12) gegenüberliegenden unteren Rand zumindest eine in radialer Richtung ausgebildete 1. piston (10) for an internal combustion engine, which at its the piston head (12) opposite lower edge at least one formed in the radial direction
Aussparung (20) aufweist.  Has recess (20).
2. Kolben nach Anspruch 1, dadurch gekennzeichnet, dass die Materialdicke an dem die Aussparung (20) begrenzenden Abschnitt in etwa gleich zu der Materialdicke benachbart zu der Aussparung (20) ist. 2. Piston according to claim 1, characterized in that the material thickness at which the recess (20) delimiting portion is approximately equal to the material thickness adjacent to the recess (20).
3. Kolben nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der untere Rand des Kolbens (10) im Bereich der Aussparung (20) in etwa auf dem gleichen Niveau ist, wie benachbart zu der Aussparung (20) . 3. Piston according to claim 1 or 2, characterized in that the lower edge of the piston (10) in the region of the recess (20) is approximately at the same level as adjacent to the recess (20).
4. Kolben nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die Aussparung (20) am unteren Rand des Kolbens (10) eine Tiefe in radialer Richtung von etwa 1 bis 3 mm aufweist. 4. Piston according to one of the preceding claims, characterized in that the recess (20) at the lower edge of the piston (10) has a depth in the radial direction of about 1 to 3 mm.
5. Kolben nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass sich die Tiefe der Aussparung (20) vom unteren Rand des Kolbens (10) ausgehend in Richtung der Kolbenachse verringert. 5. Piston according to one of the preceding claims, characterized in that the depth of the recess (20) from the lower edge of the piston (10) decreases starting in the direction of the piston axis.
6. Kolben nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass zumindest eine Aussparung (20) auf der Gegendruckseite des Kolbens (10) ausgebildet ist. 6. Piston according to one of the preceding claims, characterized in that at least one recess (20) on the counter-pressure side of the piston (10) is formed.
7. Verbrennungsmotor mit zumindest einem Kolben (10) nach zumindest einem der vorangehenden Ansprüche und 7. internal combustion engine with at least one piston (10) according to at least one of the preceding claims and
zumindest einer Kühlöldüse, wobei ein Abstand zwischen der Kühlöldüse und der Begrenzung der Aussparung (20) bevorzugt etwa 2 mm oder mehr beträgt.  at least one cooling oil nozzle, wherein a distance between the cooling oil nozzle and the boundary of the recess (20) is preferably about 2 mm or more.
EP10752751.7A 2009-10-07 2010-09-01 Piston for an internal combustion engine, and internal combustion engine having a piston Active EP2486263B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL10752751T PL2486263T4 (en) 2009-10-07 2010-09-01 Piston for an internal combustion engine, and internal combustion engine having a piston

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009045437A DE102009045437A1 (en) 2009-10-07 2009-10-07 Piston for an internal combustion engine and internal combustion engine with a piston
PCT/EP2010/062799 WO2011042264A1 (en) 2009-10-07 2010-09-01 Piston for an internal combustion engine, and internal combustion engine having a piston

Publications (3)

Publication Number Publication Date
EP2486263A1 true EP2486263A1 (en) 2012-08-15
EP2486263B1 EP2486263B1 (en) 2015-11-04
EP2486263B2 EP2486263B2 (en) 2019-08-28

Family

ID=43086964

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10752751.7A Active EP2486263B2 (en) 2009-10-07 2010-09-01 Piston for an internal combustion engine, and internal combustion engine having a piston

Country Status (8)

Country Link
US (1) US20120260869A1 (en)
EP (1) EP2486263B2 (en)
JP (1) JP5859967B2 (en)
DE (1) DE102009045437A1 (en)
ES (1) ES2559507T5 (en)
HU (1) HUE028228T2 (en)
PL (1) PL2486263T4 (en)
WO (1) WO2011042264A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015124748A1 (en) * 2014-02-21 2015-08-27 Ks Kolbenschmidt Gmbh Piston without a closed cooling chamber for internal combustion engines with at least one cooling oil nozzle per cylinder and method for cooling said piston
DE102016120907A1 (en) 2015-11-02 2017-05-04 Ks Kolbenschmidt Gmbh Optimized hub support
CN109312688A (en) 2016-05-04 2019-02-05 Ks科尔本施密特有限公司 Piston
DE102018203226A1 (en) 2018-03-05 2019-09-05 Federal-Mogul Nürnberg GmbH Piston for an internal combustion engine

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE898827C (en) * 1951-06-08 1953-12-03 Mahle Kg Oval internal combustion engine piston, in particular light metal piston
US4280455A (en) * 1978-01-30 1981-07-28 Fuji Jukogyo Kabushiki Kaisha Internal combustion engine
DE3639806A1 (en) * 1986-11-21 1988-05-26 Kolbenschmidt Ag LIGHT METAL PISTON FOR INTERNAL COMBUSTION ENGINES
DE3717767A1 (en) * 1987-05-26 1988-12-08 Mahle Gmbh COOLABLE SUBMERSIBLE PISTON FOR COMBUSTION ENGINES
DE3732927A1 (en) * 1987-09-30 1989-04-13 Mahle Gmbh Coolable trunk piston for internal combustion engines
US5042364A (en) * 1988-05-31 1991-08-27 Atsugi Motor Parts Company, Limited Piston structure for internal combustion engine
DE4007992A1 (en) * 1989-03-20 1990-09-27 Avl Verbrennungskraft Messtech Internal combustion engine piston - has separate top and bottom sections with chamber wall in bottom one
DE4434994C2 (en) * 1994-09-30 1998-02-19 Porsche Ag Pistons for internal combustion engines
JP3091141B2 (en) * 1996-09-27 2000-09-25 川崎重工業株式会社 Piston for internal combustion engine
JP3548451B2 (en) * 1999-02-22 2004-07-28 本田技研工業株式会社 Pin hole structure of piston
EP1268991B1 (en) * 2000-03-28 2006-07-05 Federal-Mogul Corporation Heavy duty piston having oil splash deflector
NL1021673C1 (en) † 2002-10-17 2004-04-20 Mecal Applied Mechanics B V Wind turbine hub, has arched pitch plate in each of blade flanges to reduce deformation
US7086354B2 (en) * 2003-10-29 2006-08-08 Deere & Company Cooling nozzle mounting arrangement
DE102004023773B3 (en) † 2004-05-11 2005-11-17 Repower Systems Ag Wind turbine
US7406941B2 (en) 2004-07-21 2008-08-05 Federal - Mogul World Wide, Inc. One piece cast steel monobloc piston
DE102004056769A1 (en) 2004-11-24 2006-06-01 Federal-Mogul Nürnberg GmbH Piston for an internal combustion engine and combination of a piston with an oil injection assembly
JP4337741B2 (en) * 2005-01-19 2009-09-30 トヨタ自動車株式会社 Piston for internal combustion engine
GB2428452B (en) * 2005-07-20 2011-02-23 Ford Global Tech Llc Oil spray system for an internal combustion engine
DE102005041002A1 (en) 2005-08-29 2007-03-01 Ks Kolbenschmidt Gmbh Piston for internal combustion engine, has piston skirt arranged at piston body and having shaft wall portion, where curved region is provided within piston during transfer of pin bore towards shaft wall portion
WO2007025686A1 (en) * 2005-08-29 2007-03-08 Ks Kolbenschmidt Gmbh Lightweight piston
JP4580328B2 (en) * 2005-11-29 2010-11-10 日野自動車株式会社 Engine lubrication structure
US8047123B2 (en) * 2007-12-07 2011-11-01 Mahle Engine Components Usa, Inc. Cooling gallery insert for a piston

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2011042264A1 *

Also Published As

Publication number Publication date
DE102009045437A1 (en) 2011-04-14
ES2559507T3 (en) 2016-02-12
ES2559507T5 (en) 2020-04-15
JP5859967B2 (en) 2016-02-16
EP2486263B2 (en) 2019-08-28
PL2486263T5 (en) 2019-11-29
PL2486263T4 (en) 2019-11-29
PL2486263T3 (en) 2016-04-29
JP2013507556A (en) 2013-03-04
US20120260869A1 (en) 2012-10-18
HUE028228T2 (en) 2016-12-28
EP2486263B1 (en) 2015-11-04
WO2011042264A1 (en) 2011-04-14

Similar Documents

Publication Publication Date Title
WO2007093289A1 (en) Multiple-part steel piston for an internal combustion engine having a cooling duct
WO2008131739A1 (en) Piston for an internal combustion engine
EP2595771B1 (en) Method for producing a cooling channel system for internal combustion engines and piston produced in this way
EP2486263B1 (en) Piston for an internal combustion engine, and internal combustion engine having a piston
DE102013215538B4 (en) Piston for an internal combustion engine
DE102010027637A1 (en) Piston for internal combustion engines, and internal combustion engine for this purpose
DE102005041001A1 (en) Lightweight piston for internal combustion engine has arched zone inside piston at transition from gudgeon pin boring in direction of shaft wall section
EP2823166A1 (en) Cast light metal piston, in particular an aluminium piston
EP3334918A1 (en) Piston for an internal combustion engine
DE102010024270A1 (en) Lubrication and sealing system for an internal combustion engine
EP3250804A1 (en) Piston for an internal combustion engine and method for producing the piston for an internal combustion engine
EP2742225A1 (en) Piston
DE102014010156A1 (en) Arrangement of a piston in a cylinder of a reciprocating internal combustion engine and piston for a reciprocating internal combustion engine
DE102014222416A1 (en) Piston for an internal combustion engine
DE10360739B4 (en) Cylinder crankcase with cylinder liner
DE102016201621A1 (en) Piston of an internal combustion engine
EP3108133A1 (en) Piston with an open cooling chamber having a flow-effective oil guiding surface and method for cooling said piston
DE102009001888B4 (en) Piston for an internal combustion engine
WO2019170589A1 (en) Piston for an internal combustion engine
DE102020116878A1 (en) Connecting rod for an internal combustion engine with variable compression and manufacturing process for a connecting rod
DE102019216252A1 (en) Pistons for an internal combustion engine
EP3710686A1 (en) Steel piston with optimized design
DE102015218430A1 (en) Piston for an internal combustion engine
EP3063400A1 (en) Piston for an internal combustion engine and method for the production thereof

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: 20120117

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR

DAX Request for extension of the european patent (deleted)
17Q First examination report despatched

Effective date: 20140822

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

INTG Intention to grant announced

Effective date: 20150605

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): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR

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: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 759374

Country of ref document: AT

Kind code of ref document: T

Effective date: 20151115

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502010010598

Country of ref document: DE

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2559507

Country of ref document: ES

Kind code of ref document: T3

Effective date: 20160212

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20151104

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

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

Ref country code: HR

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: 20151104

Ref country code: LT

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: 20151104

Ref country code: IS

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: 20160304

Ref country code: NO

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: 20160204

Ref country code: NL

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: 20151104

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

Ref country code: FI

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: 20151104

Ref country code: PT

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: 20160304

Ref country code: GR

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: 20160205

Ref country code: SE

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: 20151104

Ref country code: LV

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: 20151104

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

Ref country code: CZ

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: 20151104

REG Reference to a national code

Ref country code: DE

Ref legal event code: R026

Ref document number: 502010010598

Country of ref document: DE

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 7

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

Ref country code: SM

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: 20151104

Ref country code: DK

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: 20151104

Ref country code: RO

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: 20151104

Ref country code: SK

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: 20151104

Ref country code: EE

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: 20151104

26 Opposition filed

Opponent name: KS KOLBENSCHMIDT GMBH

Effective date: 20160803

PLAX Notice of opposition and request to file observation + time limit sent

Free format text: ORIGINAL CODE: EPIDOSNOBS2

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

Ref country code: SI

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: 20151104

REG Reference to a national code

Ref country code: HU

Ref legal event code: AG4A

Ref document number: E028228

Country of ref document: HU

PLBB Reply of patent proprietor to notice(s) of opposition received

Free format text: ORIGINAL CODE: EPIDOSNOBS3

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

Ref country code: BE

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

Effective date: 20160930

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

Ref country code: MC

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: 20151104

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PLAY Examination report in opposition despatched + time limit

Free format text: ORIGINAL CODE: EPIDOSNORE2

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

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

Ref country code: IE

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

Effective date: 20160901

Ref country code: LI

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

Effective date: 20160930

Ref country code: CH

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

Effective date: 20160930

PLBC Reply to examination report in opposition received

Free format text: ORIGINAL CODE: EPIDOSNORE3

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 8

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

Ref country code: LU

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

Effective date: 20160901

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 759374

Country of ref document: AT

Kind code of ref document: T

Effective date: 20160901

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20160930

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

Ref country code: AT

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

Effective date: 20160901

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

Ref country code: CY

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: 20151104

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

Ref country code: TR

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: 20151104

Ref country code: MK

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: 20151104

Ref country code: MT

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: 20151104

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

Ref country code: BG

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: 20151104

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 9

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

Ref country code: AL

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: 20151104

APBM Appeal reference recorded

Free format text: ORIGINAL CODE: EPIDOSNREFNO

APBP Date of receipt of notice of appeal recorded

Free format text: ORIGINAL CODE: EPIDOSNNOA2O

APAH Appeal reference modified

Free format text: ORIGINAL CODE: EPIDOSCREFNO

APBU Appeal procedure closed

Free format text: ORIGINAL CODE: EPIDOSNNOA9O

PUAH Patent maintained in amended form

Free format text: ORIGINAL CODE: 0009272

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

Free format text: STATUS: PATENT MAINTAINED AS AMENDED

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

Ref country code: PL

Payment date: 20190621

Year of fee payment: 10

27A Patent maintained in amended form

Effective date: 20190828

AK Designated contracting states

Kind code of ref document: B2

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR

REG Reference to a national code

Ref country code: DE

Ref legal event code: R102

Ref document number: 502010010598

Country of ref document: DE

RIN2 Information on inventor provided after grant (corrected)

Inventor name: FREIDHAGER, MARCUS

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

Ref country code: FR

Payment date: 20190819

Year of fee payment: 10

Ref country code: IT

Payment date: 20190924

Year of fee payment: 10

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

Ref country code: HU

Payment date: 20190903

Year of fee payment: 10

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

Ref country code: GB

Payment date: 20190827

Year of fee payment: 10

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

Ref country code: ES

Payment date: 20191001

Year of fee payment: 10

REG Reference to a national code

Ref country code: ES

Ref legal event code: DC2A

Ref document number: 2559507

Country of ref document: ES

Kind code of ref document: T5

Effective date: 20200415

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

Effective date: 20200901

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: 20200930

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

Ref country code: GB

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

Effective date: 20200901

Ref country code: HU

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

Effective date: 20200902

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 NON-PAYMENT OF DUE FEES

Effective date: 20200901

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20220114

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

Ref country code: ES

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

Effective date: 20200902

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

Ref country code: DE

Payment date: 20220818

Year of fee payment: 13

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230528