DE102007005268A1 - Multi-part steel piston for an internal combustion engine with a cooling channel - Google Patents
Multi-part steel piston for an internal combustion engine with a cooling channel Download PDFInfo
- Publication number
- DE102007005268A1 DE102007005268A1 DE102007005268A DE102007005268A DE102007005268A1 DE 102007005268 A1 DE102007005268 A1 DE 102007005268A1 DE 102007005268 A DE102007005268 A DE 102007005268A DE 102007005268 A DE102007005268 A DE 102007005268A DE 102007005268 A1 DE102007005268 A1 DE 102007005268A1
- Authority
- DE
- Germany
- Prior art keywords
- piston
- ring element
- cooling channel
- ring
- designed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
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
- F02F3/0015—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
Abstract
Die Erfindung betrifft einen Kolben (1), der aus einem Kolbenoberteil (2) und einem Kolbenunterteil (3) besteht, wobei im Bereich des Kolbenoberteils (2) ein von einem Ringelement (9) gebildetes Ringfeld mit Ringnuten (4), ein dahinter koaxial und radial umlaufender Kühlkanal (5) und insbesondere eine Brennraummulde (6) vorhanden sind und das Kolbenunterteil (3) zumindest einen Kolbenschaft (7) und eine entsprechende Bolzenbohrung (8) aufweist, wobei erfindungsgemäß vorgesehen ist, dass die Anlagebereiche des Ringelementes (9) an dem Kolbengrundkörper zumindest einmal absatzförmig gestaltet sind und das Ringelement (9) unlösbar an dem Kolbengrundkörper angefügt ist.The invention relates to a piston (1), which consists of a piston upper part (2) and a piston lower part (3), wherein in the region of the piston upper part (2) of a ring element (9) formed ring field with annular grooves (4), behind a coaxial and radially encircling cooling channel (5) and in particular a combustion bowl (6) are present and the piston lower part (3) at least one piston shaft (7) and a corresponding pin bore (8), wherein according to the invention it is provided that the abutment portions of the ring element (9) are designed at least once paragraph-shaped on the piston body and the ring member (9) is permanently attached to the piston body.
Description
Die Erfindung betrifft einen Kolben für einen Verbrennungsmotor mit einem Kühlkanal gemäß den Merkmalen des Oberbegriffes des Patentanspruches 1.The The invention relates to a piston for an internal combustion engine with a cooling channel according to the characteristics the preamble of claim 1.
Kolben mit einem Kühlkanal für Verbrennungsmotore sind grundsätzlich bekannt. Bei solchen, auch Kühlkanalkolben genannten Kolben ist hinter dem Ringfeld koaxial und radial umlaufend, ein Kühlkanal vorgesehen, durch den Motoröl zur Kühlung des oberen Bereiches des Kolbens zirkuliert.piston with a cooling channel for combustion engines are basically known. In such, also cooling channel piston said piston is behind the ring field coaxial and radially encircling, a cooling channel provided by the engine oil for cooling the upper portion of the piston circulates.
Es ist bekannt, solche Kühlkanäle durch einen verlorenen Kern herzustellen.It is known, such cooling channels through to make a lost core.
Außerdem ist es bekannt, einen zugänglichen Bereich des Kolbenbodens mit einer umlaufenden Vertiefung zu versehen, die anschließend mit einem Verschlusselement, wie z.B. einem Blechstreifen, verschlossen wird.Besides that is it is known, an accessible To provide area of the piston crown with a circumferential recess, the following with a closure element, e.g. a metal strip, sealed becomes.
Die erstgenannte Konstruktion hat sich in der Praxis zwar bewährt, aber den Nachteil, dass ein vollständiges Entfernen des verlorenen Kerns erforderlich ist, um das Eindringen von Fremdkörpern, die den verlorenen Kern gebildet haben, in den Motoröl-Kreislauf des Verbrennungsmotors zu vermeiden. Die zweitgenannte Methode hat den Nachteil, dass hierdurch recht hoch bauende Kolben entstehen, da die radial umlaufende Vertiefung mit einem entsprechenden Werkzeug von unten eingebracht werden muss.The The former design has proven itself in practice, but the disadvantage that a complete Removing the lost core is required to penetrate foreign bodies, that have formed the lost core into the engine oil cycle of the internal combustion engine. The second-named method has the disadvantage that this results in quite high-build pistons, because the radial circumferential recess with a corresponding tool must be introduced from below.
Um
diese beschriebenen Nachteile zu vermeiden, ist aus der
Bei
der
Bei
der
Der Erfindung liegt daher die Aufgabe zu Grunde, einen gattungsgemäßen Kolben dahingehend zu verbessern, dass die eingangs geschilderten Nachteile vermieden werden.Of the Invention is therefore based on the object, a generic piston to improve that the disadvantages described above be avoided.
Diese Aufgabe ist dadurch gelöst, dass die Anlagebereiche des Ringelementes an den Kolbengrundkörper zumindest einmal absatzförmig gestaltet sind und das Ringelement unlösbar an dem Kolbengrundkörper angefügt ist. Die absatzförmige Gestaltung der Anlagebereiche hat den Vorteil, dass das Ringelement sowohl beim Aufsetzen als auch nach dem Anbringen an dem Kolbengrundkörper geführt wird und geführt gelagert ist, so dass Verkantungen vermieden werden. Die absatzförmigen Anlagebereiche erhöhen darüber hinaus die Festigkeit des Kolbenbodens bzw. des Kolbenoberteils, nachdem das Ringelement unlösbar an dem Kolbengrundkörper angefügt worden ist. Durch diese sowohl formschlüssige als auch materialschlüssige Verbindung ist eine einfachere Montage und eine erhöhte Festigkeit gegeben. Ein weiterer Vorteil der Erfindung ist darin zu sehen, dass die Wandstärken der beteiligten Bauelemente, insbesondere des Ringelements und des Kolbengrundkörpers (insbesondere die Wandstärke im Übergangsbereich von dem Kühlkanal zu einer Brennraummulde) gegenüber dem Stand der Technik verringert werden können, da zum Aufsetzen des Ringelementes auf den Kolbengrundkörper nur geringe Kräfte erforderlich sind, die deutlich geringer ausfallen als diejenigen Kräfte, die erforderlich wären, als wenn das Ringelement auf dem Kolbengrundkörper festgeschraubt werden soll. Außerdem lässt sich durch entsprechende Formgebung sowohl des Kobengrundkörpers als auch des Ringelements schon vorab der gewünschte und ausreichend große Querschnitt des Kühlkanals realisieren. Mit dem erfindungsgemäßen Kolben werden also mehrere Vorteile erzielt, nämlich Festigkeitssteigerung, einfachere Herstellung und Montage, geringere Kolbenhöhe und auch eine Gewichtsersparnis auf Grund der geschilderten Verringerungen der Wandstärken.These Task is solved by that the contact areas of the ring element to the piston body at least once heel-shaped are designed and the ring element is permanently attached to the piston body. The heel-shaped Design of the investment areas has the advantage that the ring element is guided both during placement and after attachment to the piston body and guided is stored, so that tilting can be avoided. The heel-shaped investment areas increase about that In addition, the strength of the piston crown and the piston upper part, after the ring element insoluble attached to the piston body is. By this both form-fitting as well as material-locking Connection is easier assembly and increased strength given. Another advantage of the invention is to be seen in that the wall thicknesses the components involved, in particular the ring element and the Piston body (especially the wall thickness in the transition area from the cooling channel towards a combustion bowl) The prior art can be reduced because of the placement of the ring element on the piston body only small forces are required, which are significantly lower than those forces that would be required as if the ring element are screwed onto the piston body should. In addition, can be by appropriate shaping of both the Kobengrundkörpers as also the ring element in advance the desired and sufficiently large cross-section of the cooling channel realize. With the piston according to the invention thus several Benefits achieved, namely Strength increase, easier manufacture and assembly, lower Piston height and also a weight saving due to the described reductions the wall thicknesses.
Ein
Ausführungsbeispiel
der Erfindung, auf das diese jedoch nicht beschränkt ist, ist in den beiden
In diesen Figuren ist ein Kolben
In these figures is a piston
Im
Kolbenoberteil
Nach
der Herstellung eines Kolbengrundkörpers weist dieser einen oberen
Steg
Außerdem ist
es vorgesehen, dass der nach unten weisende umlaufende Rand des
Ringelementes
Zur
Erhöhung
der Festigkeit nach dem Fügen
des Ringelementes
Nachdem
das Ringelement
In besonders vorteilhafter Weise lässt sich mit der vorliegenden Erfindung ein Kolben realisieren, der für den Betrieb von schnell laufenden, hoch belasteten Dieselmotoren mit Leistungen größer als 80 kW pro Liter und Zünddrücken oberhalb 200 bar einsetzbar ist.In particularly advantageous manner realize with the present invention, a piston, the for the Operation of high-speed, high-load diesel engines with Benefits greater than 80 kW per liter and ignition pressures above 200 bar can be used.
- 11
- Kolbenpiston
- 22
- KolbenoberteilPiston crown
- 33
- KolbenunterteilPiston part
- 44
- Ringnutring groove
- 55
- Kühlkanalcooling channel
- 66
- BrennraummuldeCombustion bowl
- 77
- Kolbenschaftpiston shaft
- 88th
- Bolzenbohrungpin bore
- 99
- Ringelementring element
- 1010
- oberer Stegupper web
- 1111
- unterer Steglower web
- 1212
- obere Fügestelleupper joint
- 1313
- untere Fügestellelower joint
- 1414
- Absatzparagraph
- 1515
- Feder-Nut-BereichTongue and groove area
- 1616
- Kolbenbodenpiston crown
Claims (5)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006007806.3 | 2006-02-17 | ||
DE102006007806 | 2006-02-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102007005268A1 true DE102007005268A1 (en) | 2007-08-30 |
Family
ID=37969849
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102007005268A Ceased DE102007005268A1 (en) | 2006-02-17 | 2007-02-02 | Multi-part steel piston for an internal combustion engine with a cooling channel |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1984613B1 (en) |
DE (1) | DE102007005268A1 (en) |
PL (1) | PL1984613T3 (en) |
WO (1) | WO2007093289A1 (en) |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009025691A1 (en) | 2009-06-20 | 2010-01-28 | Daimler Ag | Piston for internal combustion engine, particularly reciprocating internal combustion engine, has upper piston area, which has ring carrier with ring groove and piston bowl |
DE102009041392A1 (en) | 2009-09-12 | 2011-05-26 | Daimler Ag | Piston for internal combustion engine, particularly reciprocating piston engine, has upper piston area, which has ring carrier with ring groove and piston bowl |
US7971355B2 (en) | 2007-12-20 | 2011-07-05 | Mahle International Gmbh | Method for attaching a ring element to a piston for an internal combustion engine |
DE102010051033A1 (en) | 2010-11-11 | 2012-05-16 | Daimler Ag | Liquid-cooled piston of an internal combustion engine |
WO2012065661A1 (en) | 2010-11-17 | 2012-05-24 | Daimler Ag | Cooling duct piston and method for producing the same |
DE102011013143A1 (en) | 2011-03-04 | 2012-09-06 | Mahle International Gmbh | Piston for an internal combustion engine and method for its production |
DE102011107656A1 (en) * | 2011-07-12 | 2013-01-17 | Mahle International Gmbh | Method for producing a piston for an internal combustion engine and pistons for an internal combustion engine |
WO2014029878A1 (en) * | 2012-08-23 | 2014-02-27 | Ks Kolbenschmidt Gmbh | Joined connection on a two-piece steel piston and joining method |
DE102012215300A1 (en) * | 2012-08-29 | 2014-03-06 | Federal-Mogul Nürnberg GmbH | Steel/aluminum piston, used in motor, includes cooling channel and piston parts connected to along triangular weld seam produced by welding process, where seam is directed to cooling channel and cavity is formed by melting welding bead |
DE102012220778A1 (en) * | 2012-11-14 | 2014-05-15 | Mahle International Gmbh | Laser welding method for welding two elements e.g. plug and camshaft tube of motor component e.g. camshaft used in internal combustion engine, involves welding two elements of motor component with each other at adjustable welding depth |
WO2014113446A3 (en) * | 2013-01-15 | 2014-09-12 | Mahle International Gmbh | Method of laser welding a piston using inside space backing |
US11162453B2 (en) | 2016-05-04 | 2021-11-02 | Ks Kolbenschmidt Gmbh | Piston |
DE102022102051A1 (en) | 2022-01-28 | 2023-08-03 | Ks Kolbenschmidt Gmbh | Piston blank, piston and method |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007044106A1 (en) | 2007-09-15 | 2009-03-19 | Mahle International Gmbh | Two-piece piston for an internal combustion engine |
US8807109B2 (en) * | 2009-11-06 | 2014-08-19 | Federal-Mogul Corporation | Steel piston with cooling gallery and method of construction thereof |
US9970384B2 (en) | 2009-11-06 | 2018-05-15 | Federal-Mogul Llc | Steel piston with cooling gallery and method of construction thereof |
DE102010056218A1 (en) * | 2010-12-24 | 2012-06-28 | Mahle International Gmbh | Piston for an internal combustion engine |
US9593641B2 (en) * | 2011-09-21 | 2017-03-14 | Mahle International Gmbh | Laser welded piston assembly |
BR112015020267A2 (en) | 2013-02-22 | 2017-08-22 | Mahle Int Gmbh | PISTON ASSEMBLY WITH WELDING SUPPORT |
KR101874560B1 (en) * | 2016-12-08 | 2018-07-04 | 동양피스톤 주식회사 | Piston for vehicle engine and method for manufacturing the same |
US10926362B2 (en) * | 2018-12-13 | 2021-02-23 | Caterpillar Inc. | Remanufactured engine piston and method |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3613521A (en) * | 1968-11-07 | 1971-10-19 | Komatsu Mfg Co Ltd | Piston for internal combustion engine |
BR8803970A (en) * | 1988-07-15 | 1990-03-20 | Metal Leve Sa | REFRIGERATED ARTICULATED PUMP |
IT1240526B (en) * | 1990-07-31 | 1993-12-17 | Borgo Nova S.P.A. | IMPROVEMENT RELATING TO PISTONS, IN GENERAL. |
DE19846152A1 (en) * | 1998-10-07 | 2000-04-13 | Mahle Gmbh | Piston with piston base made of forged steel and a cooling channel |
DE10128737B4 (en) * | 2001-06-13 | 2005-08-18 | Federal-Mogul Nürnberg GmbH | Piston with dispersion-hardened piston upper part |
US7104183B2 (en) * | 2004-07-07 | 2006-09-12 | Karl Schmidt Unisia, Inc. | One-piece steel piston |
-
2007
- 2007-02-02 EP EP07703220.9A patent/EP1984613B1/en active Active
- 2007-02-02 WO PCT/EP2007/000891 patent/WO2007093289A1/en active Application Filing
- 2007-02-02 DE DE102007005268A patent/DE102007005268A1/en not_active Ceased
- 2007-02-02 PL PL07703220T patent/PL1984613T3/en unknown
Cited By (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7971355B2 (en) | 2007-12-20 | 2011-07-05 | Mahle International Gmbh | Method for attaching a ring element to a piston for an internal combustion engine |
DE102009025691A1 (en) | 2009-06-20 | 2010-01-28 | Daimler Ag | Piston for internal combustion engine, particularly reciprocating internal combustion engine, has upper piston area, which has ring carrier with ring groove and piston bowl |
DE102009041392A1 (en) | 2009-09-12 | 2011-05-26 | Daimler Ag | Piston for internal combustion engine, particularly reciprocating piston engine, has upper piston area, which has ring carrier with ring groove and piston bowl |
DE102010051033A1 (en) | 2010-11-11 | 2012-05-16 | Daimler Ag | Liquid-cooled piston of an internal combustion engine |
WO2012062405A1 (en) | 2010-11-11 | 2012-05-18 | Daimler Ag | Liquid-cooled piston of an internal combustion engine |
DE102010051681A1 (en) | 2010-11-17 | 2012-05-24 | Daimler Ag | Coolant channel piston and method for its production |
WO2012065661A1 (en) | 2010-11-17 | 2012-05-24 | Daimler Ag | Cooling duct piston and method for producing the same |
DE102010051681B4 (en) | 2010-11-17 | 2019-09-12 | Daimler Ag | Method for producing a cooling channel piston |
US9429100B2 (en) | 2010-11-17 | 2016-08-30 | Daimler Ag | Cooling duct piston and method for producing the same |
US9163580B2 (en) | 2011-03-04 | 2015-10-20 | Mahle International Gmbh | Piston for an internal combustion engine and method for its production |
DE102011013143A1 (en) | 2011-03-04 | 2012-09-06 | Mahle International Gmbh | Piston for an internal combustion engine and method for its production |
WO2012119590A2 (en) | 2011-03-04 | 2012-09-13 | Mahle International Gmbh | Piston for a combustion engine and method for producing same |
DE102011107656A1 (en) * | 2011-07-12 | 2013-01-17 | Mahle International Gmbh | Method for producing a piston for an internal combustion engine and pistons for an internal combustion engine |
WO2014029878A1 (en) * | 2012-08-23 | 2014-02-27 | Ks Kolbenschmidt Gmbh | Joined connection on a two-piece steel piston and joining method |
US11098800B2 (en) | 2012-08-23 | 2021-08-24 | Ks Kolbenschmidt Gmbh | Joined connection on a two-part piston and joining method |
DE102012215300A1 (en) * | 2012-08-29 | 2014-03-06 | Federal-Mogul Nürnberg GmbH | Steel/aluminum piston, used in motor, includes cooling channel and piston parts connected to along triangular weld seam produced by welding process, where seam is directed to cooling channel and cavity is formed by melting welding bead |
DE102012220778A1 (en) * | 2012-11-14 | 2014-05-15 | Mahle International Gmbh | Laser welding method for welding two elements e.g. plug and camshaft tube of motor component e.g. camshaft used in internal combustion engine, involves welding two elements of motor component with each other at adjustable welding depth |
WO2014113446A3 (en) * | 2013-01-15 | 2014-09-12 | Mahle International Gmbh | Method of laser welding a piston using inside space backing |
CN105142850A (en) * | 2013-01-15 | 2015-12-09 | 马勒国际有限公司 | Method of laser welding a piston using inside space backing |
US9440310B2 (en) | 2013-01-15 | 2016-09-13 | Mahle International Gmbh | Monolite piston laser welding spatter control |
US11162453B2 (en) | 2016-05-04 | 2021-11-02 | Ks Kolbenschmidt Gmbh | Piston |
DE102022102051A1 (en) | 2022-01-28 | 2023-08-03 | Ks Kolbenschmidt Gmbh | Piston blank, piston and method |
Also Published As
Publication number | Publication date |
---|---|
EP1984613A1 (en) | 2008-10-29 |
WO2007093289A1 (en) | 2007-08-23 |
PL1984613T3 (en) | 2018-04-30 |
EP1984613B1 (en) | 2017-11-01 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
R002 | Refusal decision in examination/registration proceedings | ||
R006 | Appeal filed | ||
R008 | Case pending at federal patent court | ||
R003 | Refusal decision now final | ||
R010 | Appeal proceedings settled by withdrawal of appeal(s) or in some other way |