EP2142323A1 - Casting core for forming a cooling channel in a piston produced by casting - Google Patents

Casting core for forming a cooling channel in a piston produced by casting

Info

Publication number
EP2142323A1
EP2142323A1 EP08758029A EP08758029A EP2142323A1 EP 2142323 A1 EP2142323 A1 EP 2142323A1 EP 08758029 A EP08758029 A EP 08758029A EP 08758029 A EP08758029 A EP 08758029A EP 2142323 A1 EP2142323 A1 EP 2142323A1
Authority
EP
European Patent Office
Prior art keywords
piston
casting core
core
casting
cooling channel
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
EP08758029A
Other languages
German (de)
French (fr)
Other versions
EP2142323B1 (en
Inventor
Helmut Kollotzek
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mahle International GmbH
Original Assignee
Mahle International GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mahle International GmbH filed Critical Mahle International GmbH
Publication of EP2142323A1 publication Critical patent/EP2142323A1/en
Application granted granted Critical
Publication of EP2142323B1 publication Critical patent/EP2142323B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/10—Cores; Manufacture or installation of cores
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/10—Cores; Manufacture or installation of cores
    • B22C9/105—Salt cores
    • 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

  • the invention relates to a casting core for forming a cooling channel in a casting-produced piston according to the preamble of claim 1.
  • Japanese Patent Application Publication No. 2006090159 A discloses a water-soluble salt core for forming a cooling passage in a cast piston for an internal combustion engine, which is annular and has a region parallel to the piston axis forming the oil drain of the cooling passage and a quarter-circle core bend merges into the annular part of the cooling channel. Furthermore, the salt core has a region arranged parallel to the piston axis, which forms the oil inlet of the cooling channel, wherein the salt core on the opposite side of this region has a notch for forming a tapered in the direction of the injected oil jet beam splitter.
  • the beam splitter has the function of dividing the oil jet in the halves of the cooling channel lying on both sides, wherein the division of the cooling oil in the two cooling channel halves depends both on the position of the piston against a oil jet of the oil jet and of lateral accelerations, the oil jet due to Moves experienced with the engine equipped with the piston.
  • FIG. 1 is a perspective view of a half cut, produced by casting piston with the inventive soluble core to form a cooling channel
  • FIG. 2 shows the soluble casting core according to the invention in a perspective view, before it is inserted into a casting mold for the piston
  • Fig. 3 shows an embodiment of the casting core with two oil drain holes and one in the direction of the main drain opening increasing cross-section and
  • Fig. 4 shows a further embodiment of the casting core with oval inlet opening.
  • Fig. 1 shows a perspective view of a half-cut piston 1 for an internal combustion engine, which is produced by casting, wherein a casting core 2 made of a releasable material is poured with.
  • the casting core 2 is completely drawn, which is annular and arranged near the piston head 3 in the radially outer region of the piston 1.
  • the piston 1 can be made of aluminum or cast iron, while the soluble casting core 2 can be made of salt or of sand, so that the casting core 2 can be washed out of the piston 1 after pouring the piston 1 with water or with another suitable liquid ,
  • the piston 1 is provided with a molded into the piston head 3 combustion bowl 4 and radially outboard near the piston with a ring portion 5, wherein the piston bottom 3 nearest groove 6 has an existing example of Niresist ring carrier 20 for a compression ring, not shown in the drawing.
  • the piston 1 has on the side facing away from the piston head 3 side of the piston 1 also two opposing pin bosses 7, 8, each with a pin bore 9, 10 and also the pin bosses 7, 8 interconnecting and integrally formed on the piston head 3 shaft elements, of which the representation of the piston 1 according to FIG. 1, only the shaft member 11 is visible.
  • the piston 1 illustrated in FIG. 1 is cut open so that the inlet opening 12 formed by the casting core 2 and the main outlet openings 13 of the cooling channel can be seen.
  • the casting core 2 is located both in the area of the inlet opening 12 and in the region of the main drain opening 13 short regions 14, 15, which have at least approximately the same cross-sectional diameter, and each pass over a quarter-circular core bend 17, 18 in the annular part of the casting core 2.
  • the region 14, which forms the inlet opening 12, at least approximately parallel to the piston axis 16.
  • the two regions 14 and 15 of the casting core 2 are arranged at a small distance from each other, in the present embodiment, approximately the cross-sectional diameter of the region 14 or 15 but maximum the double cross-sectional diameter of the range 14 or 15 corresponds.
  • the second region 14 opens into that end of the casting core 2, which forms the inlet opening 12 of the cooling channel.
  • the casting core 2 may have a further core bend 19 over which the first region 15 of the casting core 2 lying parallel to the piston axis 16 merges into that part of the casting core 2 which forms the main drainage opening 13, which is hereby aligned in that the cooling oil emerging therefrom, as shown in FIG. 1, sprays in the direction of a piston pin (not shown in FIG. 1).
  • the cooling oil after cooling the piston 1 can be used to cool the bolt of the piston 1, and to lubricate the small connecting rod eye of a connecting rod connected to the piston.
  • the shape of the casting core 2 in the region of the inlet opening 12 and in the region of the main drain opening 13 with lying parallel to the piston axis 16 areas 14 and 15 and the core bends 17 to 19 has the advantage that cooling oil regardless of the position of the piston 1 of a
  • arranged in the crankshaft oil spray nozzle can be injected under high pressure into the oil inlet 12 formed by the casting core 2, wherein the oil spray nozzle is arranged so that it squirts the cooling oil parallel to the piston axis 16 and thereby injects into the inlet opening 12.
  • the oil then passes through the part of the cooling channel formed by the core bend 17 with only slight flow resistance in the annular part of the oil passage, passes through this quickly, and passes through the parts formed by the core bends 18 and 19 of the cooling channel with low flow resistance to the main drain opening 13, so that a large oil ensures throughput, which leads to a comparison with the prior art improved cooling of the piston 1.
  • the illustrated in Fig. 3 embodiment of a casting core 21 has in comparison to the casting core 2 of FIG. 2 pointing away from the piston head 3 center region 26, which forms a central drain opening 22, and on the areas 14 and 15 "for the inlet opening 12th Moreover, the cross-section of the casting core 21 increases from its center region 26 up to its region forming the main drain opening 13. First, the cross section of the entire casting core 21 has a first region 15 ' oval shape, whose ovality lies in the direction of the piston axis 16.
  • the cooling channel formed by the casting core 21 has the advantage that it is introduced into the inlet opening 12 because of the additional central outlet opening 22 and because of the cross section increasing in the direction of the first zone 15 ' Cooling oil opposes a very low flow resistance so that thereby further increases the amount of the guided through the cooling channel cooling oil and the cooling of the piston 1 is improved.
  • the inlet opening 24 is formed oval-shaped, wherein the ovality is perpendicular to the piston radius 25.
  • This has the advantage that the arranged in the crankshaft oil nozzle, with the help of the cooling channel piston, the cooling oil is supplied, must not be aligned so that it squirts oil exclusively parallel to the piston axis 16.
  • the cooling oil can be obliquely, that is, injected at an acute angle to the piston axis 16 in the direction of inlet opening 24, wherein the oil spray nozzle must be aligned such that the oil jet, the inlet opening 24 regardless of the Position of the piston 1 between the top and bottom dead center hits.

Landscapes

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

Abstract

The invention relates to a soluble and essentially annular casting core (2) for forming a cooling channel that transitions into two areas (14, 15) which are approximately parallel to the piston axis (16) and are facing away from the piston head (3), via a respective bending of the core (17, 18) in the shape of a quadrant, wherein the second area (14) transitions into a part of the casting core (2) that forms the feed opening (12) of the cooling channel, and the first area (15) transitions into a part of the casting core (2) that forms the discharge opening (13) of the cooling channel. The two areas (14, 15) of the casting core (2) are disposed at a distance from one another, which corresponds at a maximum to two times the cross-sectional diameter of one of the two areas (14, 15). As a result, the throughflow of the cooling oil traversing the cooling channel is accelerated and the cooling of the piston improved.

Description

Gießkern zur Bildung eines Kühlkanals in einem gießtechnisch hergestellten Kolben Casting core for forming a cooling channel in a piston produced by casting
Die Erfindung betrifft einen Gießkern zur Bildung eines Kühlkanals in einem gießtechnisch hergestellten Kolben nach dem Oberbegriff des Anspruches 1.The invention relates to a casting core for forming a cooling channel in a casting-produced piston according to the preamble of claim 1.
Aus der japanischen Patentanmeldung mit der Publikationsnummer 2006090159 A ist ein wasserlöslicher Salzkern zur Bildung eines Kühlkanals in einem gegossenen Kolben für einen Verbrennungsmotor bekannt, der ringförmig ausgebildet ist und einen parallel zur Kolbenachse liegenden Bereich aufweist, der den Ölablauf des Kühlkanals bildet und über eine viertelkreisförmige Kernbiegung in den ringförmigen Teil des Kühlkanals übergeht. Weiterhin weist der Salzkern einen parallel zur Kolbenachse angeordneten Bereich auf, der den Ölzulauf des Kühlkanals bildet, wobei der Salzkern auf der diesem Bereich gegenüberliegenden Seite eine Kerbe zur Bildung eines in Richtung des eingespritzten Ölstrahles konisch zulaufenden Strahlteilers aufweist. Der Strahlteiler hat die Funktion, den Ölstrahl in die beidseitig hiervon liegenden Hälften des Kühlkanals aufzuteilen, wobei die Aufteilung des Kühlöls in die beiden Kühlkanalhälften sowohl von der Position des Kolbens gegenüber einer den Ölstrahl abspritzenden Öldüse als auch von Querbeschleunigungen abhängt, die der Ölstrahl aufgrund von Bewegungen des mit dem Kolben ausgerüsteten Motors erfährt. Hieraus ergibt sich der Nachteil, dass die Menge des Kühlöles, das in die beidseitig des Strahlteilers liegenden Hälften des Kühlkanals eingeleiteten wird, großen Schwankungen unterliegt, woraus sich Temperaturprobleme für den Kolben ergeben können, die zu einer Beschädigung des mit dem Kolben ausgestatteten Motors führen können.Japanese Patent Application Publication No. 2006090159 A discloses a water-soluble salt core for forming a cooling passage in a cast piston for an internal combustion engine, which is annular and has a region parallel to the piston axis forming the oil drain of the cooling passage and a quarter-circle core bend merges into the annular part of the cooling channel. Furthermore, the salt core has a region arranged parallel to the piston axis, which forms the oil inlet of the cooling channel, wherein the salt core on the opposite side of this region has a notch for forming a tapered in the direction of the injected oil jet beam splitter. The beam splitter has the function of dividing the oil jet in the halves of the cooling channel lying on both sides, wherein the division of the cooling oil in the two cooling channel halves depends both on the position of the piston against a oil jet of the oil jet and of lateral accelerations, the oil jet due to Moves experienced with the engine equipped with the piston. This results in the disadvantage that the amount of cooling oil, which is introduced into the lying on both sides of the beam splitter halves of the cooling channel is subject to great fluctuations, which can result in temperature problems for the piston, which can lead to damage of the engine equipped with the piston ,
Diesen Nachteil des Standes der Technik zu vermeiden, ist Aufgabe der Erfindung. Gelöst wird diese Aufgabe mit den im Kennzeichen des Hauptanspruches stehenden Merkmalen. Zweckmäßige Ausgestaltungen der Erfindung sind Gegenstand der Unteransprüche.To avoid this disadvantage of the prior art is an object of the invention. This problem is solved with the features in the characterizing part of the main claim. Advantageous embodiments of the invention are the subject of the dependent claims.
BESTATIGUNGSKOPIE Ein Ausführungsbeispiel der Erfindung wird im Folgenden anhand der Zeichnungen beschrieben. Es zeigenBESTATIGUNGSKOPIE An embodiment of the invention will be described below with reference to the drawings. Show it
Fig. 1 eine perspektivische Darstellung eines halb aufgeschnittenen, im Gießverfahren hergestellten Kolbens mit dem erfindungsgemäßen, löslichen Gießkern zur Bildung eines Kühlkanals,1 is a perspective view of a half cut, produced by casting piston with the inventive soluble core to form a cooling channel,
Fig. 2 den löslichen Gießkern gemäß der Erfindung in perspektivischer Darstellung, bevor er in eine Gießform für den Kolben eingelegt wird,2 shows the soluble casting core according to the invention in a perspective view, before it is inserted into a casting mold for the piston,
Fig. 3 eine Ausgestaltung des Gießkerns mit zwei Ölablauföffnungen und einem in Richtung der Hauptablauföffnung zunehmendem Querschnitt undFig. 3 shows an embodiment of the casting core with two oil drain holes and one in the direction of the main drain opening increasing cross-section and
Fig. 4 eine weitere Ausgestaltung des Gießkerns mit ovaler Zulauföffnung.Fig. 4 shows a further embodiment of the casting core with oval inlet opening.
Fig. 1 zeigt in perspektivischer Darstellung einen halbaufgeschnittenen Kolben 1 für einen Verbrennungsmotor, der im Gießverfahren hergestellt wird, wobei ein aus einem auslösbaren Material hergestellter Gießkern 2 mit eingegossen wird. In Fig. 1 ist der Gießkern 2 vollständig eingezeichnet, der ringförmig ausgebildet und nahe dem Kolbenboden 3 im radial äußeren Bereich des Kolbens 1 angeordnet ist. Hergestellt werden kann der Kolben 1 aus Aluminium oder aus Gusseisen, während der lösliche Gießkern 2 aus Salz oder aus Sand bestehen kann, sodass der Gießkern 2 nach dem Gießen des Kolbens 1 mit Wasser oder mit einer anderen geeigneten Flüssigkeit aus dem Kolben 1 ausgewaschen werden kann.Fig. 1 shows a perspective view of a half-cut piston 1 for an internal combustion engine, which is produced by casting, wherein a casting core 2 made of a releasable material is poured with. In Fig. 1, the casting core 2 is completely drawn, which is annular and arranged near the piston head 3 in the radially outer region of the piston 1. The piston 1 can be made of aluminum or cast iron, while the soluble casting core 2 can be made of salt or of sand, so that the casting core 2 can be washed out of the piston 1 after pouring the piston 1 with water or with another suitable liquid ,
Der Kolben 1 ist versehen mit einer in den Kolbenboden 3 eingeformte Verbrennungsmulde 4 und radial außen in Kolbenbodennähe mit einer Ringpartie 5, wobei die dem Kolbenboden 3 nächstliegende Nut 6 einen beispielsweise aus Niresist bestehenden Ringträger 20 für einen in der Zeichnung nicht dargestellten Verdichtungsring aufweist. Der Kolben 1 weist auf der dem Kolbenboden 3 abgewandten Seite des Kolbens 1 zudem zwei einander gegenüberliegende Bolzennaben 7, 8 mit je einer Bolzenbohrung 9, 10 und außerdem die Bolzennaben 7, 8 miteinander verbindende und an den Kolbenboden 3 angeformte Schaftelemente auf, von denen in der Darstellung des Kolbens 1 gemäß Fig. 1 nur das Schaftelement 11 sichtbar ist. Der in Fig. 1 dargestellte Kolben 1 ist so aufgeschnitten, dass die vom Gießkern 2 gebildeten Zulauföffnung 12 und Hauptablauföffnungen 13 des Kühlkanals erkennbar sind. In Fig. 2 ist dargestellt, dass der Gießkern 2 sowohl im Bereich der Zulauföff- nung 12 als auch im Bereich der Hauptablauföffnung 13 kurze Bereiche 14, 15 aufweist, die zumindest annähernd gleiche Querschnittsdurchmesser aufweisen, und die jeweils über eine viertelkreisförmige Kernbiegung 17, 18 in den ringförmigen Teil des Gießkernes 2 übergehen. Hierbei liegt der Bereich 14, der die Zulauföffnung 12 bildet, zumindest annähernd parallel zur Kolbenachse 16. Die beiden Bereiche 14 und 15 des Gießkerns 2 sind in einem geringen Abstand voneinander angeordnet, der im vorliegenden Ausführungsbeispiel näherungsweise dem Querschnittsdurchmesser des Bereiches 14 oder 15 maximal aber dem zweifachen Querschnittsdurchmesser des Bereiches 14 oder 15 entspricht. Der zweite Bereich 14 mündet hierbei in dasjenige Ende des Gießkernes 2, das die Zulauföffnung 12 des Kühlkanals bildet.The piston 1 is provided with a molded into the piston head 3 combustion bowl 4 and radially outboard near the piston with a ring portion 5, wherein the piston bottom 3 nearest groove 6 has an existing example of Niresist ring carrier 20 for a compression ring, not shown in the drawing. The piston 1 has on the side facing away from the piston head 3 side of the piston 1 also two opposing pin bosses 7, 8, each with a pin bore 9, 10 and also the pin bosses 7, 8 interconnecting and integrally formed on the piston head 3 shaft elements, of which the representation of the piston 1 according to FIG. 1, only the shaft member 11 is visible. The piston 1 illustrated in FIG. 1 is cut open so that the inlet opening 12 formed by the casting core 2 and the main outlet openings 13 of the cooling channel can be seen. FIG. 2 shows that the casting core 2 is located both in the area of the inlet opening 12 and in the region of the main drain opening 13 short regions 14, 15, which have at least approximately the same cross-sectional diameter, and each pass over a quarter-circular core bend 17, 18 in the annular part of the casting core 2. Here, the region 14, which forms the inlet opening 12, at least approximately parallel to the piston axis 16. The two regions 14 and 15 of the casting core 2 are arranged at a small distance from each other, in the present embodiment, approximately the cross-sectional diameter of the region 14 or 15 but maximum the double cross-sectional diameter of the range 14 or 15 corresponds. The second region 14 opens into that end of the casting core 2, which forms the inlet opening 12 of the cooling channel.
Im Bereich der Hauptablauföffnung 13 des Kühlkanals kann der Gießkern 2 eine weitere Kernbiegung 19 aufweisen, über die der zur Kolbenachse 16 parallel liegende erste Bereich 15 des Gießkernes 2 in den Teil des Gießkernes 2 übergeht, der die Hauptablauföffnung 13 bildet, die hierbei so ausgerichtet ist, dass das hieraus austretende Kühlöl, wie Fig. 1 erkennen lässt, in Richtung eines in der Fig. 1 nicht dargestellten Kolbenbolzens spritzt. Hierdurch kann das Kühlöl nach dem Kühlen des Kolbens 1 dazu verwendet werden, den Bolzen des Kolbens 1 zu kühlen, und das kleine Pleuelauge einer mit dem Kolben verbundenen Pleuelstange zu schmieren.In the region of the main drainage opening 13 of the cooling channel, the casting core 2 may have a further core bend 19 over which the first region 15 of the casting core 2 lying parallel to the piston axis 16 merges into that part of the casting core 2 which forms the main drainage opening 13, which is hereby aligned in that the cooling oil emerging therefrom, as shown in FIG. 1, sprays in the direction of a piston pin (not shown in FIG. 1). Thereby, the cooling oil after cooling the piston 1 can be used to cool the bolt of the piston 1, and to lubricate the small connecting rod eye of a connecting rod connected to the piston.
Hierbei hat die Form des Gießkernes 2 im Bereich der Zulauföffnung 12 und im Bereich der Hauptablauföffnung 13 mit den parallel zur Kolbenachse 16 liegenden Bereichen 14 und 15 und mit den Kernbiegungen 17 bis 19 den Vorteil, dass Kühlöl unabhängig von der Position des Kolbens 1 von einer beispielweise im Bereich der Kurbelwelle angeordneten Ölspritzdüse unter hohem Druck in die vom Gießkern 2 gebildete Ölzulauföffnung 12 eingespritzt werden kann, wobei die Ölspritzdüse so angeordnet ist, dass sie das Kühlöl parallel zur Kolbenachse 16 abspritzt und dabei in die Zulauföffnung 12 einspritzt. Das Öl gelangt dann über den von der Kernbiegung 17 gebildeten Teil des Kühlkanals mit nur geringem Strömungswiderstand in den ringförmigen Teil des Ölkanals, durchläuft diesen schnell, und gelangt über die von den Kernbiegungen 18 und 19 gebildeten Teile des Kühlkanals mit geringem Strömungswiderstand zur Hauptablauföffnung 13, sodass hierdurch ein großer Öl- durchsatz gewährleistet ist, der zu einer gegenüber dem Stand der Technik verbesserten Kühlung des Kolbens 1 führt.Here, the shape of the casting core 2 in the region of the inlet opening 12 and in the region of the main drain opening 13 with lying parallel to the piston axis 16 areas 14 and 15 and the core bends 17 to 19 has the advantage that cooling oil regardless of the position of the piston 1 of a For example, arranged in the crankshaft oil spray nozzle can be injected under high pressure into the oil inlet 12 formed by the casting core 2, wherein the oil spray nozzle is arranged so that it squirts the cooling oil parallel to the piston axis 16 and thereby injects into the inlet opening 12. The oil then passes through the part of the cooling channel formed by the core bend 17 with only slight flow resistance in the annular part of the oil passage, passes through this quickly, and passes through the parts formed by the core bends 18 and 19 of the cooling channel with low flow resistance to the main drain opening 13, so that a large oil ensures throughput, which leads to a comparison with the prior art improved cooling of the piston 1.
Außerdem hat der geringe Abstand zwischen den Teilen des Kühlkanals, die von den parallel zur Kolbenachse 16 liegenden Bereichen 14 und 15 des Gießkernes 2 gebildeten werden, den Vorteil, dass nur ein sehr geringer Teil des Kolbens 1 vom Kühlöl ungekühlt bleibt.In addition, the small distance between the parts of the cooling channel, which are formed by lying parallel to the piston axis 16 areas 14 and 15 of the casting core 2, the advantage that only a very small part of the piston 1 remains uncooled by the cooling oil.
Das in Fig. 3 dargestellte Ausführungsbeispiel eines Gießkerns 21 weist im Vergleich zum Gießkern 2 gemäß Fig. 2 einen vom Kolbenboden 3 wegweisenden Mittenbereich 26 auf, der eine mittlere Ablauföffnung 22 bildet, und der auf der den Bereichen 14 und 15" für die Zulauföffnung 12 und für die Hauptablauföffnung 13 gegenüberliegenden Seite des Gießkerns 21 angeordnet ist. Darüber hinaus nimmt der Querschnitt des Gießkerns 21 ausgehend von dessen Mittenbereich 26 bis hin zu dessen die Hauptablauföffnung 13 bildenden Bereich ersten Bereich 15' zu. Hierbei weist der Querschnitt des gesamten Gießkerns 21 eine ovale Form auf, dessen Ovalität in Richtung der Kolbenachse 16 liegt. Der vom Gießkern 21 gebildete Kühlkanal hat den Vorteil, dass er wegen der zusätzlichen, mittleren Ablauföffnung 22 und wegen des in Richtung des ersten Bereiches 15' zunehmenden Querschnitts dem in die Zulauföffnung 12 eingeleiteten Kühlöl einen sehr geringen Strömungswiderstand entgegensetzt, sodass dadurch die Menge des durch den Kühlkanal geleiteten Kühlöles weiter zunimmt und die Kühlung des Kolbens 1 verbessert wird.The illustrated in Fig. 3 embodiment of a casting core 21 has in comparison to the casting core 2 of FIG. 2 pointing away from the piston head 3 center region 26, which forms a central drain opening 22, and on the areas 14 and 15 "for the inlet opening 12th Moreover, the cross-section of the casting core 21 increases from its center region 26 up to its region forming the main drain opening 13. First, the cross section of the entire casting core 21 has a first region 15 ' oval shape, whose ovality lies in the direction of the piston axis 16. The cooling channel formed by the casting core 21 has the advantage that it is introduced into the inlet opening 12 because of the additional central outlet opening 22 and because of the cross section increasing in the direction of the first zone 15 ' Cooling oil opposes a very low flow resistance so that thereby further increases the amount of the guided through the cooling channel cooling oil and the cooling of the piston 1 is improved.
In Fig. 4 ist eine Ausgestaltung eines Gießkernes 23 dargestellt, dessen Zulauföffnung 24 ovalförmig ausgebildet ist, wobei deren Ovalität senkrecht zum Kolbenradius 25 liegt. Dies bringt den Vorteil mit sich, dass die im Bereich der Kurbelwelle angeordnete Ölspritzdüse, mit deren Hilfe dem Kühlkanalkolben das Kühlöl zugeführt wird, nicht so ausgerichtet sein muss, dass sie Öl ausschließlich parallel zur Kolbenachse 16 abspritzt. In Abhängigkeit des Ortes, wo die Ölspritzdüse montiert ist, kann das Kühlöl schräg, das heißt, in einem spitzen Winkel zur Kolbenachse 16 in Richtung Zulauföffnung 24 gespritzt werden, wobei die Ölspritzdüse derart ausgerichtet sein muss, dass der Ölstrahl die Zulauföffnung 24 unabhängig von der Stellung des Kolbens 1 zwischen dem oberen und dem unteren Totpunkt trifft. Bezugszeichenliste4, an embodiment of a casting core 23 is shown, the inlet opening 24 is formed oval-shaped, wherein the ovality is perpendicular to the piston radius 25. This has the advantage that the arranged in the crankshaft oil nozzle, with the help of the cooling channel piston, the cooling oil is supplied, must not be aligned so that it squirts oil exclusively parallel to the piston axis 16. Depending on the location where the oil spray nozzle is mounted, the cooling oil can be obliquely, that is, injected at an acute angle to the piston axis 16 in the direction of inlet opening 24, wherein the oil spray nozzle must be aligned such that the oil jet, the inlet opening 24 regardless of the Position of the piston 1 between the top and bottom dead center hits. LIST OF REFERENCE NUMBERS
1 Kolben1 piston
2 Gießkern2 casting core
3 Kolbenboden3 piston bottom
4 Verbrennungsmulde4 combustion bowl
5 Ringpartie5 ring game
Nut , 8 Bolzennabe , 10 BolzenbohrungGroove, 8 pin hub, 10 pin bore
11 Schaftelement11 shaft element
12 Zulauföffnung12 inlet opening
13 Hauptablauföffnung 4 zweiter Bereich des Gießkerns 2 5 erster Bereich des Gießkerns 2 5' erster Bereich des Gießkerns 23 6 Kolbenachse 7, 18, 19 Kernbiegung 0 Ringträger 1 Gießkern 2 mittlere Ablauföffnung 3 Gießkern 4 Zulauföffnung 5 Kolbenradius 6 Mittenbereich des Gießkerns 23 13 main drain opening 4 second region of the casting core 2 5 first region of the casting core 2 5 'first region of the casting core 23 6 piston axis 7, 18, 19 core bend 0 ring carrier 1 casting core 2 middle drain opening 3 casting core 4 inlet opening 5 piston radius 6 center region of the casting core 23

Claims

Patentansprüche claims
1. Löslicher und im Wesentlichen ringförmig ausgebildeter Gießkern (2, 21 , 23) zur Bildung eines Kühlkanals zur Aufnahme von Kühlöl, wobei der Kühlkanal in einem gießtechnisch hergestellten Kolben (1 ) nahe einem Kolbenboden (3) angeordnet ist, und wobei der Gießkern (2, 21 , 23) über eine viertelkreisförmige Kernbiegung (18) in einen zumindest näherungsweise parallel zur Kolbenachse (16) angeordneten und vom Kolbenboden (3) wegweisenden, ersten Bereich (15, 15') übergeht, der eine Hauptablauföffnung (13) des Kühlkanals bildet, dadurch gekennzeichnet, dass der Gießkern (2, 21 , 23) über eine viertelkreisförmige Kernbiegung (17) in einen zumindest annähernd parallel zur Kolbenachse (16) angeordneten und vom Kolbenboden (3) wegweisenden, zweiten Bereich (14) übergeht, der die Zulauföffnung (12, 24) des Kühlkanals bildet.1. Soluble and substantially annularly shaped casting core (2, 21, 23) for forming a cooling channel for receiving cooling oil, wherein the cooling channel is arranged in a casting-produced piston (1) near a piston head (3), and wherein the casting core ( 2, 21, 23) via a quarter-circle-shaped core bend (18) in a at least approximately parallel to the piston axis (16) arranged and the piston head (3) pointing away, first region (15, 15 ') passes, the main drain opening (13) of the cooling channel forms, characterized in that the casting core (2, 21, 23) via a quarter circular core bend (17) in a at least approximately parallel to the piston axis (16) arranged and from the piston head (3) pointing away, the second region (14) merges, which Inlet opening (12, 24) of the cooling channel forms.
2. Gießkern (2, 21 , 23) nach Anspruch 1 , dadurch gekennzeichnet, dass der erste Bereich (15) des Gießkemes (2) in eine Kernbiegung (19) übergeht, die die Hauptablauföffnung (13) bildet und so ausrichtet, dass das hieraus austretende Kühlöl in Richtung eines im Kolben (1 ) angeordneten Kolbenbolzens spritzt.2. casting core (2, 21, 23) according to claim 1, characterized in that the first region (15) of the casting core (2) merges into a core bend (19) which forms the main drain opening (13) and aligns that From this exiting cooling oil in the direction of a piston (1) arranged piston pin splashes.
3. Gießkern (2, 21 , 23) nach Anspruch 1 oder 2, gekennzeichnet durch einen den Bereichen (14, 15, 15') für die Zulauföffnung (12, 24) und die Hauptablauföffnung (13) gegenüberliegenden und vom Kolbenboden wegweisenden Mittenbereich (26) zur Bildung einer mittleren Ablauföffnung (22).3. casting core (2, 21, 23) according to claim 1 or 2, characterized by a the areas (14, 15, 15 ') for the inlet opening (12, 24) and the main drain opening (13) opposite and pointing away from the piston crown center area ( 26) for forming a central drain opening (22).
4. Gießkern (2) nach Anspruch 1 bis 3, dadurch gekennzeichnet, dass der erste und der zweite Bereich (14, 15) des Gießkerns (2) zumindest annähernd gleiche Querschnittsdurchmesser aufweisen und in einem Abstand voneinander angeordnet sind, der maximal dem zweifachen Querschnittsdurchmesser eines der beiden Bereiche (14, 15) entspricht.4. casting core (2) according to claim 1 to 3, characterized in that the first and the second region (14, 15) of the casting core (2) have at least approximately the same cross-sectional diameter and are arranged at a distance from each other, the maximum of twice the cross-sectional diameter one of the two areas (14, 15) corresponds.
5. Gießkern (21 , 23) nach Anspruch 3, dadurch gekennzeichnet, dass der Querschnitt des Gießkerns (21 , 23) ausgehend vom Mittenbereich (26) bis zum ersten Bereich (15') zunimmt. 5. casting core (21, 23) according to claim 3, characterized in that the cross section of the casting core (21, 23), starting from the central region (26) to the first region (15 ') increases.
6. Gießkern (2, 21 , 23) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Zulauföffnung (12, 24) ovalförmig ausgebildet ist, wobei dessen Ovalität senkrecht zum Kolbenradius (25) liegt.6. casting core (2, 21, 23) according to any one of the preceding claims, characterized in that the inlet opening (12, 24) is oval-shaped, wherein the ovality is perpendicular to the piston radius (25).
7. Gießkern (2, 21 , 23) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass er aus Salz besteht.7. casting core (2, 21, 23) according to any one of the preceding claims, characterized in that it consists of salt.
8. Gießkern (2, 21 , 23) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass er aus Sand besteht. 8. casting core (2, 21, 23) according to any one of the preceding claims, characterized in that it consists of sand.
EP08758029A 2007-04-27 2008-04-25 Casting core for forming a cooling channel in a piston produced by casting Not-in-force EP2142323B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102007019930 2007-04-27
DE102007044105A DE102007044105A1 (en) 2007-04-27 2007-09-15 Casting core for forming a cooling channel in a piston produced by casting
PCT/DE2008/000770 WO2008131754A1 (en) 2007-04-27 2008-04-25 Casting core for forming a cooling channel in a piston produced by casting

Publications (2)

Publication Number Publication Date
EP2142323A1 true EP2142323A1 (en) 2010-01-13
EP2142323B1 EP2142323B1 (en) 2012-10-03

Family

ID=39777626

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08758029A Not-in-force EP2142323B1 (en) 2007-04-27 2008-04-25 Casting core for forming a cooling channel in a piston produced by casting

Country Status (7)

Country Link
US (1) US8122935B2 (en)
EP (1) EP2142323B1 (en)
JP (1) JP5185995B2 (en)
CN (1) CN101668599B (en)
BR (1) BRPI0810852A2 (en)
DE (1) DE102007044105A1 (en)
WO (1) WO2008131754A1 (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008020231A1 (en) 2008-04-22 2009-10-29 Mahle International Gmbh Casting core for forming a cooling channel
DE102008002571A1 (en) * 2008-06-20 2009-12-31 Federal-Mogul Nürnberg GmbH Piston for an internal combustion engine
CN102151794B (en) * 2011-02-23 2013-10-23 江苏大学 Gravity casting method and device for piston
DE102011076455A1 (en) 2011-05-25 2012-11-29 Mahle International Gmbh Casting core for forming a cooling channel in a piston
DE102011086411A1 (en) 2011-11-15 2013-05-16 Mahle International Gmbh Mold for a piston
DE102012213558A1 (en) * 2012-08-01 2014-02-06 Mahle International Gmbh piston
DE102012217939A1 (en) * 2012-10-01 2014-04-03 Mahle International Gmbh Process for the production of cores for the casting production of workpieces
JP6050709B2 (en) * 2013-03-22 2016-12-21 日立オートモティブシステムズ株式会社 Piston for internal combustion engine
CN104353814B (en) * 2014-10-28 2016-08-24 山东滨州渤海活塞股份有限公司 Alumina fibre titan oxide particles strengthens interior cold ring-mounted piston blank manufacture method
US20180326477A1 (en) * 2015-11-19 2018-11-15 Ks Kolbenschmidt Gmbh Cast Inflow And Outflow Openings For Cast-Steel And Cast Iron Pistons
CN107191287A (en) * 2017-06-06 2017-09-22 湖南江滨机器（集团）有限责任公司 A kind of piston and method for making piston
CN109732045A (en) * 2019-01-22 2019-05-10 共享智能铸造产业创新中心有限公司 A kind of type core and its manufacturing method and application method
GB2578803B (en) * 2019-04-04 2020-12-16 Cox Powertrain Ltd Marine outboard motor with piston cooling gallery

Family Cites Families (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7118607U (en) 1971-08-12 Alcan Aluminiumwerke Gmbh Easily removable cores and moldings for foundry purposes
JPS5659948U (en) * 1979-10-17 1981-05-22
JPS57183540A (en) * 1981-05-09 1982-11-11 Mitsubishi Heavy Ind Ltd Piston of internal combustion engine
JPH0143487Y2 (en) * 1984-12-26 1989-12-18
JPH03118259U (en) * 1990-03-19 1991-12-06
JP2553073Y2 (en) * 1991-04-30 1997-11-05 いすゞ自動車株式会社 Piston refueling device
JP2592985Y2 (en) * 1992-02-13 1999-03-31 日野自動車工業株式会社 Piston cooling system
DE19510050A1 (en) 1995-03-20 1996-09-26 Mahle Gmbh Lightweight, cast piston for IC engine
JPH09151786A (en) 1995-11-30 1997-06-10 Aisin Seiki Co Ltd Manufacture of piston for internal combustion engine
DE19650930C2 (en) 1996-12-07 2001-03-29 Kolbenschmidt Ag Pistons for internal combustion engines
DE19701085A1 (en) 1997-01-15 1998-07-16 Kolbenschmidt Ag Casting engine piston using support ring
DE59911865D1 (en) 1998-07-21 2005-05-12 Hydro Aluminium Alucast Gmbh Casting mold and casting method for producing an engine block
DE10218999B4 (en) 2002-04-27 2005-03-03 Ks Kolbenschmidt Gmbh Piston with ring carrier and mold cooling channel
DE10218998A1 (en) 2002-04-27 2003-11-13 Ks Kolbenschmidt Gmbh Piston for direct-injection Otto engine has upper section with hollow chamber acting as coolant channel with improved cooling performance
DE10325916A1 (en) 2002-06-25 2004-02-05 Mahle Gmbh Process for producing a cooled ring carrier
DE10255691A1 (en) 2002-11-29 2004-06-09 Mahle Gmbh Method for production of aluminum piston with cooling duct for piston ring carrying area
JP4276602B2 (en) 2004-09-21 2009-06-10 株式会社豊田自動織機 Piston for internal combustion engine
JP4383992B2 (en) * 2004-09-21 2009-12-16 株式会社豊田自動織機 Piston for internal combustion engine
DE102004056870A1 (en) 2004-11-25 2006-06-01 Mahle International Gmbh Piston having a cooling passage for an internal combustion engine and method of manufacturing the piston
DE102005061075A1 (en) * 2005-12-21 2007-06-28 Mahle International Gmbh Piston for internal combustion engine has hub cooling channels arranged in bolt hub regions close to bottom of piston and each connected to cooling channel

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2008131754A1 *

Also Published As

Publication number Publication date
WO2008131754A1 (en) 2008-11-06
BRPI0810852A2 (en) 2014-10-29
JP5185995B2 (en) 2013-04-17
CN101668599A (en) 2010-03-10
JP2010525221A (en) 2010-07-22
EP2142323B1 (en) 2012-10-03
DE102007044105A1 (en) 2008-10-30
US20100163203A1 (en) 2010-07-01
US8122935B2 (en) 2012-02-28
CN101668599B (en) 2013-02-13

Similar Documents

Publication Publication Date Title
EP2142323B1 (en) Casting core for forming a cooling channel in a piston produced by casting
EP1510681B1 (en) Cylinder head gasket
EP2113319B1 (en) Foundry core to construct a cooling channel
DE102004015926A1 (en) Inlet manifold made of resin
DE202006020280U1 (en) Cooling channel piston
DE102017206716B4 (en) Cylinder block of an internal combustion engine
DE112007001562T5 (en) Coolant duct ventilation assembly for a piston
EP3746651B1 (en) Reciprocating piston for a reciprocating piston internal combustion engine, and use of a reciprocating piston in a reciprocating piston internal combustion engine
DE102008055848A1 (en) Cooling channel piston of an internal combustion engine with a closure element which closes the cooling channel
DE102017204316A1 (en) COMBUSTION ENGINE
EP2788583B1 (en) Turbine vane with a throttling element
AT521514A4 (en) cylinder head
DE19716702C2 (en) Metallic mold arrangement for a reciprocating piston and reciprocating piston, in particular for internal combustion engines
EP2636468B1 (en) Device for manufacturing a cylinder crankcase
EP0819837B1 (en) Cooling circuit of an internal combustion engine
DE102014204089A1 (en) Piston for an internal combustion engine
DE10222755A1 (en) Cylinder head of an internal combustion engine
EP1200725B1 (en) Piston for an internal combustion engine
EP3411585B1 (en) Piston made of cast steel or gray cast iron for an internal combustion engine, and method for manufacturing a piston using steel casting or gray iron casting
WO2013004214A1 (en) Method for producing a piston for an internal combustion engine
DE10126359B4 (en) Pistons for an internal combustion engine
CH658811A5 (en) METAL CASTING MOLD WITH VENTILATION ARRANGEMENT.
DE112022003666T5 (en) EXHAUST PIPE
DE102016214224B4 (en) Cylinder block for a multi-cylinder internal combustion engine
DE102011110794A1 (en) Piston for internal combustion engine, has separating element with openings tapered along direction away from piston head and partially arranged at distance from circulating profile regions

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: 20091023

AK Designated contracting states

Kind code of ref document: A1

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

17Q First examination report despatched

Effective date: 20100407

DAX Request for extension of the european patent (deleted)
GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAJ Information related to disapproval of communication of intention to grant by the applicant or resumption of examination proceedings by the epo deleted

Free format text: ORIGINAL CODE: EPIDOSDIGR1

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

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

Ref legal event code: REF

Ref document number: 577733

Country of ref document: AT

Kind code of ref document: T

Effective date: 20121015

Ref country code: CH

Ref legal event code: EP

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: 502008008308

Country of ref document: DE

Effective date: 20121206

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: 20121003

REG Reference to a national code

Ref country code: NL

Ref legal event code: VDEP

Effective date: 20121003

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: 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: 20130203

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: 20121003

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: 20121003

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: 20121003

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: 20130103

Ref country code: ES

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: 20130114

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: 20121003

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: 20121003

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

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: 20130204

Ref country code: PL

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: 20121003

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: 20130104

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: 20121003

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: 20121003

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

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: 20121003

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: 20130103

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: 20121003

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: 20121003

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: 20121003

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

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 FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20121003

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: 20121003

26N No opposition filed

Effective date: 20130704

BERE Be: lapsed

Owner name: MAHLE INTERNATIONAL G.M.B.H.

Effective date: 20130430

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502008008308

Country of ref document: DE

Effective date: 20130704

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: 20121003

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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: BE

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

Effective date: 20130430

Ref country code: LI

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

Effective date: 20130430

Ref country code: CH

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

Effective date: 20130430

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: 20130425

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 577733

Country of ref document: AT

Kind code of ref document: T

Effective date: 20130425

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

Ref country code: GB

Payment date: 20140422

Year of fee payment: 7

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: 20130425

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

Ref country code: DE

Payment date: 20140423

Year of fee payment: 7

Ref country code: FR

Payment date: 20140424

Year of fee payment: 7

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

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: 20121003

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: 20121003

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

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20080425

Ref country code: LU

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

Effective date: 20130425

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 502008008308

Country of ref document: DE

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

Effective date: 20150425

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

Ref country code: DE

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

Effective date: 20151103

Ref country code: GB

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

Effective date: 20150425

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20151231

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: 20150430