WO2010025919A2 - Method for manufacturing a piston of an internal combustion engine, comprising an improved aluminum silicon alloy - Google Patents

Method for manufacturing a piston of an internal combustion engine, comprising an improved aluminum silicon alloy Download PDF

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Publication number
WO2010025919A2
WO2010025919A2 PCT/EP2009/006393 EP2009006393W WO2010025919A2 WO 2010025919 A2 WO2010025919 A2 WO 2010025919A2 EP 2009006393 W EP2009006393 W EP 2009006393W WO 2010025919 A2 WO2010025919 A2 WO 2010025919A2
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WO
WIPO (PCT)
Prior art keywords
piston
silicon alloy
aluminum
internal combustion
combustion engine
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PCT/EP2009/006393
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German (de)
French (fr)
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WO2010025919A3 (en
Inventor
Udo Buschkamp
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Ks Kolbenschmidt Gmbh
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Publication date
Application filed by Ks Kolbenschmidt Gmbh filed Critical Ks Kolbenschmidt Gmbh
Priority to US13/062,476 priority Critical patent/US20110203545A1/en
Priority to EP09778312A priority patent/EP2318560A2/en
Priority to CN2009801345694A priority patent/CN102177266A/en
Priority to JP2011525461A priority patent/JP2012502176A/en
Publication of WO2010025919A2 publication Critical patent/WO2010025919A2/en
Publication of WO2010025919A3 publication Critical patent/WO2010025919A3/en

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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C21/00—Alloys based on aluminium
    • C22C21/02—Alloys based on aluminium with silicon as the next major constituent
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C21/00—Alloys based on aluminium
    • C22C21/02—Alloys based on aluminium with silicon as the next major constituent
    • C22C21/04—Modified aluminium-silicon alloys
    • 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 
    • F02F3/0084—Pistons  the pistons being constructed from specific materials
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J1/00—Pistons; Trunk pistons; Plungers
    • F16J1/01—Pistons; Trunk pistons; Plungers characterised by the use of particular materials
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2201/00—Metals
    • F05C2201/90—Alloys not otherwise provided for
    • F05C2201/903—Aluminium alloy, e.g. AlCuMgPb F34,37

Definitions

  • the invention relates to a method for producing a piston of an internal combustion engine, wherein a piston blank made of an aluminum-silicon alloy is poured with the addition of copper fractions and then finished, according to the features of the preamble of claim 1.
  • the other possibility for producing a piston, with which the desired complex designs can be achieved is the casting method, wherein for the production of pistons made of light metal materials preferably an aluminum-silicon alloy is used, which is entered as cast melt in a mold, there solidifies, after which a piston blank of the
  • Casting mold can be removed and finished. Finishing is usually to be seen in that by machining, such. Turning or milling, the piston blank is made to measure and other elements (such as annular grooves, bolt holes, inlet and outlet openings for a cooling channel in the piston) and the like are introduced. Thereafter, the finished piston is available and can be installed in the internal combustion engine.
  • Finishing is usually to be seen in that by machining, such. Turning or milling, the piston blank is made to measure and other elements (such as annular grooves, bolt holes, inlet and outlet openings for a cooling channel in the piston) and the like are introduced. Thereafter, the finished piston is available and can be installed in the internal combustion engine.
  • the invention thus relates to a method for producing a piston in which a piston blank made of an aluminum-silicon alloy is cast.
  • a piston blank made of an aluminum-silicon alloy is cast.
  • copper shares this alloy the strength of the finished piston under consideration of the conditions during its operation in the cylinder chamber of the internal combustion engine are not yet satisfactory.
  • a motorized sliding combination of an aluminum-based alloy is known from DE 10 2005 047 037 A1.
  • the invention is therefore based on the object to provide an improved method for producing a piston of an internal combustion engine, wherein a piston produced by this method significantly improved
  • the copper content amounts to a maximum of 5.5% of the aluminum-silicon alloy and that proportions of titanium, zirconium, chromium or vanadium are added to the aluminum-silicon alloy and the sum of all components (including possible impurities) is 100%.
  • the use of such a piston alloy has the advantage that thus high vibration strengths of the finished piston in the cylinder chamber of the internal combustion engine at high temperatures, i. under full load, as well as at medium temperatures, i. at partial load of the internal combustion engine, let achieve.
  • Another advantage is the fact that the components of the piston alloy can be assembled easily, which is a key advantage in the mass production of pistons.
  • the aluminum-silicon alloy phosphorus is added. This has the advantage that the Kornfeinungs bin is improved and adjusts a better flowability. These properties in particular show their optimum effect in interaction with the other proportions in the piston alloy when the phosphorus content is 40-80 ppm.
  • beryllium vanadium is added to the piston alloy. This addition of beryllium vanadium advantageously reduces the formation of oxides, especially on the surface of the piston blank or of the finished piston.
  • the cobalt alloy TitanBor is added. Also this addition of TitanBor improves the grain refining effect (ie by substance entry the number of germs in the casting melt is increased) KS Kolbenschmidt GmbH, 74172 Neckarsulm
  • the finished piston is alfiniert, wherein the material for Alfinieren BerylliumVanadium is added.
  • the addition of beryllium vanadium in the alfin material improves its adhesion to the surface of the piston and moreover advantageously reduces the slurry history.
  • the inventive method for producing the piston using the claimed piston alloy offers a comparison with known casting process piston higher vibration resistance, which is increased by at least 15% over the previously known fatigue strength, measured at room temperature and at 350 0 C. This results in a higher load capacity of the piston during operation of the internal combustion engine, accompanied by a significant reduction in weight. Also, higher material hardness can be achieved, which advantageously eliminates the elimination of the previously performed heat treatment (solution annealing) of the cast piston blank or the finished machined piston.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)

Abstract

The invention relates to a method for manufacturing a piston of an internal combustion engine, wherein a piston blank is cast from an aluminum silicon alloy while adding copper proportions and thereafter is finished, wherein according to the invention the copper proportion is a maximum of 5.5% of the aluminum silicon alloy, and proportions of titanium (Ti), zirconium (Zr), chromium (Cr), and/or vanadium (V) are added to the aluminum silicon alloy.

Description

KS Kolbenschmidt GmbH, 74172 Neckarsulm KS Kolbenschmidt GmbH, 74172 Neckarsulm
Verfahren zur Herstellung eines Kolbens einer Brennkraftmaschine, bestehend aus einer verbesserten Aluminiumsilizium-LegierungMethod for producing a piston of an internal combustion engine, consisting of an improved aluminum-silicon alloy
Beschreibungdescription
Die Erfindung betrifft ein Verfahren zur Herstellung eines Kolbens einer Brennkraftmaschine, wobei ein Kolbenrohling aus einer Aluminiumsilizium-Legierung unter Zugabe von Kupferanteilen gegossen und danach fertig bearbeitet wird, gemäß den Merkmalen des Oberbegriffes des Patentanspruches 1.The invention relates to a method for producing a piston of an internal combustion engine, wherein a piston blank made of an aluminum-silicon alloy is poured with the addition of copper fractions and then finished, according to the features of the preamble of claim 1.
Die Kolben, die in modernen Brennkraftmaschinen betrieben werden, sind in Folge von immer weiter steigenden Einspritzdrücken und damit einhergehend immer weiter steigenden Verbrennungstemperaturen immer höheren Belastungen ausgesetzt, so dass grundsätzlich Maßnahmen ergriffen werden müssen, um die Festigkeit dieser Kolben zu verbessern.The pistons, which are operated in modern internal combustion engines, are exposed as a result of ever-increasing injection pressures and concomitantly ever-increasing combustion temperatures ever higher loads, so that in principle measures must be taken to improve the strength of these pistons.
Eine mögliche Maßnahme zur Verbesserung der Festigkeit von Kolben besteht darin, den Kolben in einem Schmiedeverfahren herzustellen. Mit dem Schmiedeverfahren lassen sich zwar die gewünschten Festigkeitsanforderungen erfüllen, wohingegen die komplexe Bauformen von modernen Kolben, insbesondere Kolben aus einem Leichtmetallwerkstoff, sich in Schmiedeverfahren nicht realisieren lassen.One possible measure to improve the strength of pistons is to make the piston in a forging process. Although the desired strength requirements can be met with the forging method, the complex designs of modern pistons, in particular pistons made of a light metal material, can not be realized in forging processes.
Die andere Möglichkeit zur Herstellung eines Kolbens, mit der sich die gewünschten komplexen Gestaltungen erzielen lassen, ist das Gießverfahren, wobei zur Herstellung von Kolben aus Leichtmetallwerkstoffen vorzugsweise eine Aluminiumsilizium-Legierung zur Anwendung kommt, die als Gießschmelze in eine Gießform eingegeben wird, dort erstarrt, wobei danach ein Kolbenrohling derThe other possibility for producing a piston, with which the desired complex designs can be achieved, is the casting method, wherein for the production of pistons made of light metal materials preferably an aluminum-silicon alloy is used, which is entered as cast melt in a mold, there solidifies, after which a piston blank of the
RlβTÄTIßUNΩSKnPfE KS Kolbenschmidt GmbH, 74172 NeckarsulmRl β TATI SUNNESS KS Kolbenschmidt GmbH, 74172 Neckarsulm
Gießform entnommen werden kann und fertig bearbeitet wird. Die Fertigbearbeitung ist im Regelfall darin zu sehen, dass durch spanabhebende Bearbeitung, wie z.B. Drehen oder Fräsen, der Kolbenrohling auf Maß gebracht wird und andere Elemente (wie z.B. Ringnuten, Bolzenbohrungen, Zulauf- und Ablauföffnungen für einen Kühlkanal im Kolben) und dergleichen eingebracht werden. Danach steht der fertige Kolben zur Verfügung und kann in die Brennkraftmaschine eingebaut werden.Casting mold can be removed and finished. Finishing is usually to be seen in that by machining, such. Turning or milling, the piston blank is made to measure and other elements (such as annular grooves, bolt holes, inlet and outlet openings for a cooling channel in the piston) and the like are introduced. Thereafter, the finished piston is available and can be installed in the internal combustion engine.
Bei den bisher bekannten Gießverfahren zur Herstellung von Kolben aus Leichtmetallwerkstoffen ist zudem eine kostenintensive doppelte Wärmebehandlung (Lösungsglühen) erforderlich, wobei dies jedoch nicht zu den gewünschten Festigkeitseigenschaften des fertigen Kolbens führt.In the previously known casting method for the production of pistons made of light metal materials, a costly double heat treatment (solution annealing) is also required, but this does not lead to the desired strength properties of the finished piston.
Die Erfindung beschäftigt sich somit mit einem Verfahren zur Herstellung eines Kolbens, bei dem ein Kolbenrohling aus einer Aluminiumsilizium-Legierung gegossen wird. Zur Erhöhung der Festigkeitsanforderungen ist es darüber hinaus schon bekannt geworden, dieser Legierung Kupferanteile beizugeben, wobei die Festigkeit des fertigen Kolbens unter der Berücksichtigung der Rahmenbedingungen während seines Betriebes im Zylinderraum der Brennkraftmaschine noch nicht zufriedenstellend sind.The invention thus relates to a method for producing a piston in which a piston blank made of an aluminum-silicon alloy is cast. To increase the strength requirements, it is also already known to add copper shares this alloy, the strength of the finished piston under consideration of the conditions during its operation in the cylinder chamber of the internal combustion engine are not yet satisfactory.
Eine motorische Gleitpaarung aus einer Aluminiumbasislegierung ist aus der DE 10 2005 047 037 A1 bekannt.A motorized sliding combination of an aluminum-based alloy is known from DE 10 2005 047 037 A1.
Der Erfindung liegt daher die Aufgabe zu Grunde, ein verbessertes Verfahren zur Herstellung eines Kolbens einer Brennkraftmaschine anzugeben, wobei ein nach diesem Verfahren hergestellter Kolben deutlich verbesserteThe invention is therefore based on the object to provide an improved method for producing a piston of an internal combustion engine, wherein a piston produced by this method significantly improved
Festigkeitsanforderungen während des Betriebes im Zylinder der Brennkraftmaschine aufweist. KS Kolbenschmidt GmbH, 74172 NeckarsulmStrength requirements during operation in the cylinder of the internal combustion engine has. KS Kolbenschmidt GmbH, 74172 Neckarsulm
Diese Aufgabe ist durch die Merkmale des Patentsanspruches 1 gelöst.This object is solved by the features of patent claim 1.
Erfindungsgemäß ist vorgesehen, dass der Kupferanteil maximal 5,5 % der Aluminiumsilizium-Legierung beträgt und dass der Aluminiumsilizium-Legierung Anteile von Titan, Zirkonium, Chrom bzw. Vanadium beigemischt werden und die Summe aller Bestandteile (einschließlich möglicher Verunreinigungen) 100 % beträgt. Die Verwendung einer solchen Kolbenlegierung hat den Vorteil, dass sich damit hohe Schwingfestigkeiten des fertigen Kolbens im Zylinderraum der Brennkraftmaschine bei hohen Temperaturen, d.h. unter Volllast, sowie bei mittleren Temperaturen, d.h. bei Teillast der Brennkraftmaschine, erzielen lassen. Ein weiterer Vorteil ist darin zu sehen, dass die Bestandteile der Kolbenlegierung sich einfach zusammensetzen lassen, was bei der Serienfertigung von Kolben von entscheidendem Vorteil ist.According to the invention, it is provided that the copper content amounts to a maximum of 5.5% of the aluminum-silicon alloy and that proportions of titanium, zirconium, chromium or vanadium are added to the aluminum-silicon alloy and the sum of all components (including possible impurities) is 100%. The use of such a piston alloy has the advantage that thus high vibration strengths of the finished piston in the cylinder chamber of the internal combustion engine at high temperatures, i. under full load, as well as at medium temperatures, i. at partial load of the internal combustion engine, let achieve. Another advantage is the fact that the components of the piston alloy can be assembled easily, which is a key advantage in the mass production of pistons.
In Weiterbildung der Erfindung ist vorgesehen, dass der Aluminiumsilizium-Legierung Phosphor zugegeben wird. Dies hat den Vorteil, dass der Kornfeinungseffekt verbessert wird sowie sich ein besseres Fließvermögen einstellt. Diese Eigenschaften zeigen insbesondere dann ihre optimale Wirkung im Zusammenspiel mit den übrigen Anteilen in der Kolbenlegierung, wenn der Phosphoranteil 40-80 ppm beträgt.In a further development of the invention it is provided that the aluminum-silicon alloy phosphorus is added. This has the advantage that the Kornfeinungseffekt is improved and adjusts a better flowability. These properties in particular show their optimum effect in interaction with the other proportions in the piston alloy when the phosphorus content is 40-80 ppm.
In Weiterbildung der Erfindung ist vorgesehen, dass der Kolbenlegierung BerylliumVanadium zugegeben wird. Diese Zugabe von BerylliumVanadium reduziert in vorteilhafter Weise die Oxidbildung, insbesondere auf der Oberfläche des Kolbenrohlings bzw. des fertig bearbeiteten Kolbens.In a development of the invention, it is provided that beryllium vanadium is added to the piston alloy. This addition of beryllium vanadium advantageously reduces the formation of oxides, especially on the surface of the piston blank or of the finished piston.
In Weiterbildung der Erfindung ist vorgesehen, dass der Kobenlegierung TitanBor zugegeben wird. Auch diese Zugabe von TitanBor verbessert den Kornfeinungseffekt (d.h. durch Substanzeintrag wird die Zahl der Keime in der Gießschmelze erhöht) KS Kolbenschmidt GmbH, 74172 NeckarsulmIn a further development of the invention, it is provided that the cobalt alloy TitanBor is added. Also this addition of TitanBor improves the grain refining effect (ie by substance entry the number of germs in the casting melt is increased) KS Kolbenschmidt GmbH, 74172 Neckarsulm
und reduziert darüber hinaus die Fiederkristallbildung (Fiederkristalle: frei schwebende und losgelöst von der Erstarrungsfront erstarrende Körner) imIn addition, it reduces the formation of the pearlescent crystals (Fiederkristalle: free - floating and detached from the solidification front grains)
Materialgefüge des gegossenen Kolbenrohlings, was ansonsten zu Materialschwächung führt.Material structure of the cast piston blank, which otherwise leads to material weakening.
In Weiterbildung der Erfindung ist vorgesehen, dass der fertig bearbeitete Kolben alfiniert wird, wobei dem Material zum Alfinieren BerylliumVanadium zugegeben wird. Die Zugabe von BerylliumVanadium in das Alfinmaterial verbessert seine Haftung auf der Oberfläche des Kolbens und reduziert darüber hinaus in vorteilhafter Weise die Sludgeschicht.In a further development of the invention it is provided that the finished piston is alfiniert, wherein the material for Alfinieren BerylliumVanadium is added. The addition of beryllium vanadium in the alfin material improves its adhesion to the surface of the piston and moreover advantageously reduces the slurry history.
Insgesamt bietet das erfindungsgemäße Verfahren zur Herstellung des Kolbens unter Verwendung der beanspruchten Kolbenlegierung eine gegenüber mit bekannten Gießverfahren hergestellten Kolben eine höhere Schwingfestigkeit, die um mindestens 15 % gegenüber der bisher bekannten Schwingfestigkeit, gemessen bei Raumtemperatur und bei 3500C, gesteigert ist. Daraus resultieren eine höhere Belastbarkeit des Kolbens im Betrieb der Brennkraftmaschine, einhergehend mit einer deutlichen Gewichtsreduzierung. Ebenfalls lassen sich höhere Materialhärten erzielen, wodurch in vorteilhafter Weise der Wegfall der bisher immer durchgeführten Wärmebehandlung (Lösungsglühen) des gegossenen Kolbenrohlings bzw. des fertig bearbeitenden Kolbens entfallen kann.Overall, the inventive method for producing the piston using the claimed piston alloy offers a comparison with known casting process piston higher vibration resistance, which is increased by at least 15% over the previously known fatigue strength, measured at room temperature and at 350 0 C. This results in a higher load capacity of the piston during operation of the internal combustion engine, accompanied by a significant reduction in weight. Also, higher material hardness can be achieved, which advantageously eliminates the elimination of the previously performed heat treatment (solution annealing) of the cast piston blank or the finished machined piston.
In der beigefügten Tabelle sind verschiedene Legierungen aus dem Stand der Technik und ihre Zusammensetzungen (M124, M142, M145, M174 von der Firma Mahle GmbH sowie KS 1295 von der Firma KS Kolbenschmidt GmbH) mit der erfindungsgemäßen Legierung, die die Bezeichnung „Timbor" trägt, und ihre Zusammensetzung aufgeführt. Die Angaben in den Spalten der Tabelle sind Prozentangaben und beziehen sich auf den prozentualen Anteil des jeweiligen Materials, bezogen auf dessen Gesamtmenge. In the attached table are various alloys of the prior art and their compositions (M124, M142, M145, M174 from Mahle GmbH and KS 1295 from KS Kolbenschmidt GmbH) with the alloy of the invention, which bears the name "Timbor" , and their composition are listed in the columns of the table are percentages and refer to the percentage of the respective material, based on the total amount.

Claims

KS Kolbenschmidt GmbH, 74172 NeckarsulmVerfahren zur Herstellung eines Kolbens einer Brennkraftmaschine, bestehend aus einer verbesserten Aluminiumsilizium-LegierungPatentansprüche KS Kolbenschmidt GmbH, 74172 Neckarsulm Method for producing a piston of an internal combustion engine, consisting of an improved aluminum-silicon alloy patent claims
1. Verfahren zur Herstellung eines Kolbens einer Brennkraftmaschine, wobei ein Kolbenrohling aus einer Aluminiumsilizium-Legierung unter Zugabe von Kupferanteilen gegossen und danach fertig bearbeitet wird, dadurch gekennzeichnet, dass der Kupferanteil maximal 5,5 % der Aluminiumsilizium- Legierung beträgt und dass der Aluminiumsilizium-Legierung Anteile von Titan (Ti), Zirkonium (Zr), Chrom (Cr) bzw. Vanadium (V) beigemischt werden und die Summe aller Bestandteile 100 % beträgt.1. A method for producing a piston of an internal combustion engine, wherein a piston blank is cast from an aluminum-silicon alloy with addition of copper components and then finished, characterized in that the copper content is not more than 5.5% of the aluminum-silicon alloy and that the aluminum-silicon alloy Alloy proportions of titanium (Ti), zirconium (Zr), chromium (Cr) or vanadium (V) are admixed and the sum of all components is 100%.
2. Verfahren nach Anspruch 1 , dadurch gekennzeichnet, dass der2. The method according to claim 1, characterized in that the
Aluminiumsilizium-Legierung Phosphor (P) zugegeben wird.Aluminum-silicon alloy phosphorus (P) is added.
3. Verfahren nach Anspruch 2, dadurch gekennzeichnet, dass der3. The method according to claim 2, characterized in that the
Phosphoranteil 40-80 ppm der Kolbenlegierung beträgt.Phosphorus content is 40-80 ppm of the piston alloy.
4. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Aluminiumsilizium-Legierung BerylliumVanadium (BeV) zugegeben wird.4. The method according to any one of the preceding claims, characterized in that the aluminum-silicon alloy berylliumVanadium (BeV) is added.
5. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Aluminiumsilizium-Legierung TitanBor (TiB) zugegeben wird. KS Kolbenschmidt GmbH, 74172 Neckarsulm5. The method according to any one of the preceding claims, characterized in that the aluminum-silicon alloy TitanBor (TiB) is added. KS Kolbenschmidt GmbH, 74172 Neckarsulm
6. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der fertig bearbeitete Kolben alfiniert wird, wobei dem Material zum Aflinieren BerylliumVanadium (BeV) zugegeben wird.6. The method according to any one of the preceding claims, characterized in that the finished piston is alfiniert, wherein the material for Aflinieren BerylliumVanadium (BeV) is added.
7. Kolben einer Brennkraftmaschine, hergestellt nach einem Verfahren gemäß einem der vorhergehenden Ansprüche.7. Piston of an internal combustion engine, produced by a method according to one of the preceding claims.
8. Kolben nach Anspruch 7, dadurch gekennzeichnet, dass der Kolben ein Kolbenoberteil mit einem Ringfeld und gegebenenfalls einer Brennraummulde und gegebenenfalls einem Kühlkanal sowie ein Unterteil mit Kolbenschäften und Bolzenbohrungen aufweist.8. Piston according to claim 7, characterized in that the piston has a piston upper part with a ring field and optionally a combustion bowl and optionally a cooling channel and a lower part with Kolbenschäften and bolt holes.
9. Kolben nach einem der Ansprüche 7 oder 8, dadurch gekennzeichnet, dass der Kolben in seinem Oberteil einen Kühlkanal aufweist, wobei der Kühlkanal mit zumindest einer Zulauföffnung und zumindest einer Ablauföffnung für ein Kühlmedium versehen ist, wobei in die zumindest eine Zulauföffnung das Kühlmedium, insbesondere Motoröl, eingespritzt wird, in dem Kühlkanal zirkuliert und aus der Ablauföffnung austritt und beim Austritt Wärme aus dem Kolbenoberteil abführt. 9. Piston according to one of claims 7 or 8, characterized in that the piston has in its upper part a cooling channel, wherein the cooling channel is provided with at least one inlet opening and at least one drain opening for a cooling medium, wherein in the at least one inlet opening the cooling medium, In particular, engine oil is injected, circulated in the cooling channel and exiting the drain opening and dissipates heat from the piston upper part at the exit.
PCT/EP2009/006393 2008-09-05 2009-09-03 Method for manufacturing a piston of an internal combustion engine, comprising an improved aluminum silicon alloy WO2010025919A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US13/062,476 US20110203545A1 (en) 2008-09-05 2009-09-03 Method For Manufacturing A Piston Of An Internal Combustion Engine, Comprising An Improved Aluminum Silicon Alloy
EP09778312A EP2318560A2 (en) 2008-09-05 2009-09-03 Method for manufacturing a piston of an internal combustion engine, comprising an improved aluminum silicon alloy
CN2009801345694A CN102177266A (en) 2008-09-05 2009-09-03 Method for manufacturing a piston of an internal combustion engine, comprising an improved aluminum silicon alloy
JP2011525461A JP2012502176A (en) 2008-09-05 2009-09-03 Method of manufacturing pistons for internal combustion engines made of improved aluminum silicon alloy

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008045800 2008-09-05
DE102008045800.7 2008-09-05

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WO2010025919A3 WO2010025919A3 (en) 2010-06-17

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JP (1) JP2012502176A (en)
CN (1) CN102177266A (en)
DE (1) DE102009039838A1 (en)
WO (1) WO2010025919A2 (en)

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WO2012171552A1 (en) * 2011-06-14 2012-12-20 Federal-Mogul Nürnberg GmbH Piston for an internal combustion engine, method for producing a piston and use of an alloy for casting a piston
US20130000482A1 (en) * 2010-10-22 2013-01-03 GM Global Technology Operations LLC Sand Casting An Aluminum Diesel Piston With An As-Cast, Reentrant Combustion Bowl For Light Or Medium Duty Diesel Engines
DE102012220765A1 (en) 2012-11-14 2014-05-15 Federal-Mogul Nürnberg GmbH Method for producing an engine component, engine component and use of an aluminum alloy
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DE102009039838A1 (en) 2010-04-29

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