EP0957256A2 - Ring carrier for an internal combustion engine piston - Google Patents
Ring carrier for an internal combustion engine piston Download PDFInfo
- Publication number
- EP0957256A2 EP0957256A2 EP99107244A EP99107244A EP0957256A2 EP 0957256 A2 EP0957256 A2 EP 0957256A2 EP 99107244 A EP99107244 A EP 99107244A EP 99107244 A EP99107244 A EP 99107244A EP 0957256 A2 EP0957256 A2 EP 0957256A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- ring carrier
- sheet metal
- cooling channel
- combustion engine
- internal combustion
- 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
Links
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F3/00—Pistons
- F02F3/16—Pistons having cooling means
- F02F3/20—Pistons having cooling means the means being a fluid flowing through or along piston
- F02F3/22—Pistons having cooling means the means being a fluid flowing through or along piston the fluid being liquid
Definitions
- the invention relates to a ring carrier for a piston of an internal combustion engine with a sheet metal cooling duct, the is connected to the ring carrier by welding.
- Ring carrier-cooling channel combinations are in themselves e.g. out known from US 4,907,545 or from FR 2,044,242. At These constructions are the ring carrier back for formation profiled a cooling channel so that a relatively simple, circular or cylindrical sheet the cooling channel can close. However, this requires a lot of material and processing and increases compared to a U-shaped sheet metal cooling channel, the weight of the piston.
- JP-OS 5-240347 it is also known to im Cross section approximately C-shaped, circular sheet metal cooling channel in shrink the ring carrier and weld it to it.
- This sheet metal part can only be made by complex Manufacture metal forming technology.
- the invention is therefore concerned with the problem of a generic ring carrier a complex and expensive Avoid shaping the sheet metal cooling channel or the ring carrier.
- the radially outer wall of the sheet metal cooling duct can both be formed by one as well as by both sheet metal parts or the radial outer boundary of the cooling channel can formed by the radially inner wall of the ring carrier be.
- the weld seam is usually in the radially inner one Wall of the sheet metal cooling duct.
- Sheet metal cooling duct By dividing the sheet metal cooling duct into two duct halves it becomes possible instead of a part that is difficult to manufacture two simple parts to use. Another advantage of Sheet metal cooling duct according to the invention is possible a variable shape with uneven cross-sections about the extent that z. B. positioned off-center Troughs may be required.
- Ring carrier that shrinking the sheet into the ring carrier or the bending around known from DE-OS 26 24 412 of the sheet around the ring carrier can be omitted.
- the two sheet metal parts can, for. B. as circular half-shells be formed - with a side wall of the half-shell is pulled up - as in Fig. 1 or it can be a sheet metal part as a half-shell and the second sheet metal part with an annular shape Angular profile as in Fig. 2 be formed.
- the two halves of the cooling duct are usually together welded.
- the parts of the sheet metal cooling channel in the Groove reinforcement pressed in and in addition can a ring carrier Centering or on the ring carrier back shoulders be in contact with the sheet metal part.
- the piston 1 has a cooled ring carrier 2, the from a solid, circular groove reinforcement 3 made of Niresist material and one welded to the groove reinforcement 3 Sheet metal cooling duct 4, which in turn consists of 2 together welded channel halves 5 and 6.
- the radially outer boundary of the cooling channel is due to the radially inner wall of the groove reinforcement 3 is formed.
Abstract
Description
Die Erfindung betrifft einen Ringträger für einen Kolben eines Verbrennungsmotors mit einem Blechkühikanal, der durch Schweißen mit dem Ringträger verbunden ist.The invention relates to a ring carrier for a piston of an internal combustion engine with a sheet metal cooling duct, the is connected to the ring carrier by welding.
Ringträger-Kühlkanal-Kombinationen sind an sich z.B. aus der US 4,907,545 oder aus der FR 2.044.242 bekannt. Bei diesen Konstruktionen ist der Ringträgerrücken zur Bildung eines Kühlkanals so profiliert, daß ein relativ einfaches, kreisringförmiges oder zylinderförmiges Blech den Kühikanal verschließen kann. Dies erfordert jedoch einen hohen Material- und Bearbeitungsaufwand und erhöht, verglichen mit einem U-förmigen Blechkühlkanal, das Gewicht des Kolbens.Ring carrier-cooling channel combinations are in themselves e.g. out known from US 4,907,545 or from FR 2,044,242. At These constructions are the ring carrier back for formation profiled a cooling channel so that a relatively simple, circular or cylindrical sheet the cooling channel can close. However, this requires a lot of material and processing and increases compared to a U-shaped sheet metal cooling channel, the weight of the piston.
Es ist ferner aus der DE 26 24 412 bekannt, zur Herstellung einer Ringträger-Kühlkanal-Kombination ein ebenes Kreisring-Blech U-förmig um einen Ringträger herumzubiegen und schweißtechnisch mit diesem zu verbinden. Dieses Verfahren erfordert am Ringträger kaum Bearbeitungsaufwand, ist jedoch umformtechnisch aufwendig.It is also known from DE 26 24 412 for the production a ring carrier-cooling channel combination a flat circular ring plate To bend around a ring carrier and to be welded with it. This method hardly requires any machining work on the ring carrier, but it is technically complex.
Aus der JP-OS 5-240347 ist es ferner bekannt, einen im Querschnitt etwa C-förmigen, kreisrunden Blechkühlkanal in den Ringträger einzuschrumpfen und mit diesem zu verschweißen. Auch dieses Blechteil läßt sich nur durch aufwendige Umformtechnik herstellen.From JP-OS 5-240347 it is also known to im Cross section approximately C-shaped, circular sheet metal cooling channel in shrink the ring carrier and weld it to it. This sheet metal part can only be made by complex Manufacture metal forming technology.
Die Erfindung beschäftigt sich daher mit dem Problem, bei einem gattungsgemäßen Ringträger eine aufwendige und teure Formgebung des Blechkühlkanals bzw. des Ringträgers zu vermeiden. The invention is therefore concerned with the problem of a generic ring carrier a complex and expensive Avoid shaping the sheet metal cooling channel or the ring carrier.
Dieses Problem wird gelöst durch einen Ringträger nach Anspruch 1. Vorteilhafte Weiterbildungen sind Gegenstand der Unteransprüche.This problem is solved by a ring carrier according to claim 1. Advantageous further training is the subject of Subclaims.
Die radial äußere Wand des Blechkühlkanals kann sowohl durch ein als auch durch beide Blechteile gebildet werden oder die radiale äußere Begrenzung des Kühlkanals kann durch die radial innen liegende Wand des Ringträgers gebildet sein.The radially outer wall of the sheet metal cooling duct can both be formed by one as well as by both sheet metal parts or the radial outer boundary of the cooling channel can formed by the radially inner wall of the ring carrier be.
Die die beiden Blechteile im Normalfall miteinander verbindende Schweißnaht liegt üblicherweise in der radial inneren Wand des Blechkühlkanals.The one that normally connects the two sheet metal parts The weld seam is usually in the radially inner one Wall of the sheet metal cooling duct.
Durch die Teilung des Blechkühlkanals in zwei Kanalhälften wird es möglich, anstatt einem schwer herzustellenden Teil zwei einfache Teile zu verwenden. Ein weiterer Vorteil des erfindungsgemäßen Blechkühlkanals besteht in der Möglichkeit einer variablen Formgebung mit ungleichmäßigen Querschnitten über den Umfang, die z. B. bei außermittig positionierten Mulden erforderlich werden können.By dividing the sheet metal cooling duct into two duct halves it becomes possible instead of a part that is difficult to manufacture two simple parts to use. Another advantage of Sheet metal cooling duct according to the invention is possible a variable shape with uneven cross-sections about the extent that z. B. positioned off-center Troughs may be required.
Ebenfalls von Vorteil ist beim erfindungsgemäßen gekühlten Ringträger, daß das Einschrumpfen des Blechs in den Ringträger bzw. das aus der DE-OS 26 24 412 bekannte Herumbiegen des Blechs um den Ringträger entfallen kann.Is also advantageous in the cooled according to the invention Ring carrier that shrinking the sheet into the ring carrier or the bending around known from DE-OS 26 24 412 of the sheet around the ring carrier can be omitted.
Die beiden Blechteile können z. B. als kreisrunde Halbschalen ausgebildet sein - wobei eine Seitenwand der Halbschale hochgezogen ist - wie in Fig. 1 oder es kann ein Blechteil als Halbschale und das zweite Blechteil kreisringförmig mit Winkelprofil wie in Fig. 2 ausgebildet sein.The two sheet metal parts can, for. B. as circular half-shells be formed - with a side wall of the half-shell is pulled up - as in Fig. 1 or it can be a sheet metal part as a half-shell and the second sheet metal part with an annular shape Angular profile as in Fig. 2 be formed.
Die beiden Hälften des Kühlkanals sind im Regelfall miteinander verschweißt. The two halves of the cooling duct are usually together welded.
Unter Umständen ist es aber auch denkbar, bei sich überlappenden Kühlkanalhälften und bei einer exakten Anlage der Hälften aneinander auf die Schweißnaht zu verzichten. Dabei müssen beide Blechhälften auch beim üblichen Alfinieren und beim Eingießen so aneinanderliegen, daß keine Schmelze in den Kühlkanal eindringen kann.Under certain circumstances, however, it is also conceivable to overlap Halves of the cooling channel and in an exact system Halves to do without the weld seam. Here both halves of the sheet must also be used for conventional finishing and when pouring together so that no melt in can penetrate the cooling channel.
Der durch die zusätzliche Schweißnaht entstehende Aufwand ist vergleichsweise gering. Allerdings müssen die beiden zu verschweißenden Hälften des Blechkühlkanals - insbesondere wenn die Blechteile stumpf gegeneinander geschweißt werden sollen - exakt gefertigt sein und es müssen Maßnahmen getroffen werden, um einen Verzug beim Schweißen zu vermeiden.The effort caused by the additional weld seam is comparatively small. However, the two have to welding halves of the sheet metal cooling duct - in particular if the sheet metal parts are butt welded against each other should - be manufactured exactly and measures must be taken to avoid warping during welding.
Insbesondere können die Teile des Blechkühlkanals in die Nutbewehrung eingepreßt und zusätzlich können ein Ringträger Zentrierungen bzw. am Ringträgerrücken Absätze angedreht sein, an denen das Blechteil anliegt.In particular, the parts of the sheet metal cooling channel in the Groove reinforcement pressed in and in addition can a ring carrier Centering or on the ring carrier back shoulders be in contact with the sheet metal part.
Dieses Problem tritt bei einer Überlappung der zu verschweißenden Bleche nicht im selben Maße auf.This problem occurs when the welded parts overlap Do not tease to the same extent.
Die Erfindung wird im folgenden anhand eines Ausführungsbeispiels näher erläutert. Es zeigt:
- Fig. 1
- einen erfindungsgemäßen Ringträger mit zweiteiligem Blechkühlkanal
- Fig. 2
- eine weitere Ausführungsform eines erfindungsgemäßen Ringträgers.
- Fig. 1
- a ring carrier according to the invention with two-part sheet metal cooling channel
- Fig. 2
- a further embodiment of a ring carrier according to the invention.
Der Kolben 1 weist einen gekühlten Ringträger 2 auf, der
aus einer massiven, kreisrunden Nutbewehrung 3 aus Niresist-Material
und einem mit der Nutbewehrung 3 verschweißten
Blechkühlkanal 4 besteht, der wiederum aus 2 miteinander
verschweißten Kanalhälften 5 und 6 besteht.The piston 1 has a cooled
Die radial äußere Begrenzung des Kühlkanals ist durch die
radial innere Wand der Nutbewehrung 3 gebildet.The radially outer boundary of the cooling channel is due to the
radially inner wall of the
Claims (3)
dadurch gekennzeichnet,
daß der Blechkühlkanal (4) aus zwei Blechteilen (5, 6) besteht.Ring carrier (2) for a piston (1) of an internal combustion engine with a sheet metal cooling channel (4) which is welded to the ring carrier (2),
characterized by
that the sheet metal cooling duct (4) consists of two sheet metal parts (5, 6).
dadurch gekennzeichnet,
daß der Blechkühlkanal (4) eine horizontale Teilung aufweist.Ring carrier for a piston according to claim 1,
characterized by
that the sheet metal cooling channel (4) has a horizontal division.
dadurch gekennzeichnet,
daß beide Teile (5, 6) des Blechkühlkanals (4) sich im Bereich der Schweißnaht überlappen.Ring carrier according to one of the preceding claims,
characterized by
that both parts (5, 6) of the sheet metal cooling channel (4) overlap in the area of the weld.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19821316 | 1998-05-13 | ||
| DE1998121316 DE19821316A1 (en) | 1998-05-13 | 1998-05-13 | Ring carrier for a piston of an internal combustion engine |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0957256A2 true EP0957256A2 (en) | 1999-11-17 |
| EP0957256A3 EP0957256A3 (en) | 2000-04-12 |
| EP0957256B1 EP0957256B1 (en) | 2003-06-25 |
Family
ID=7867564
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19990107244 Expired - Lifetime EP0957256B1 (en) | 1998-05-13 | 1999-04-14 | Ring carrier for an internal combustion engine piston |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0957256B1 (en) |
| DE (1) | DE19821316A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002040202A1 (en) * | 2000-11-18 | 2002-05-23 | Mahle Gmbh | Method of producing by casting a piston with a cooled ring carrier |
| DE10007616B4 (en) * | 2000-02-18 | 2008-08-28 | Federal-Mogul Nürnberg GmbH | Ring carrier with cooling channel |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10221209B4 (en) * | 2002-05-13 | 2005-10-27 | Ks Kolbenschmidt Gmbh | Ring carrier with cooling channel for a piston |
| DE102008031864A1 (en) * | 2008-07-05 | 2010-01-07 | Mahle International Gmbh | Insert for piston of internal combustion engine i.e. diesel engine, has supporting and cavity base parts that are arranged radially at distance from each other and connected with one another by covers, such that cooling channel is formed |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2044242A5 (en) | 1969-05-13 | 1971-02-19 | Ass Eng Ltd | Moulding motor pistons |
| DE2624412A1 (en) | 1976-05-31 | 1977-12-15 | Alcan Aluminiumwerke | METHOD OF MANUFACTURING PISTONS WITH A RING CHANNEL |
| US4907545A (en) | 1988-12-28 | 1990-03-13 | Caterpillar Inc. | Liquid cooled piston ring carrier assembly and piston using same |
| JPH05240347A (en) | 1992-02-26 | 1993-09-17 | Hino Motors Ltd | Piston abrasion-proof ring for engine |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE7212560U (en) * | 1972-06-29 | Alcan Gmbh | Heavy metal ring carrier for pistons | |
| JPS6441648A (en) * | 1987-04-21 | 1989-02-13 | Hino Motors Ltd | Wear resistant ring with cooling cavity for piston and manufacture thereof |
-
1998
- 1998-05-13 DE DE1998121316 patent/DE19821316A1/en not_active Withdrawn
-
1999
- 1999-04-14 EP EP19990107244 patent/EP0957256B1/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2044242A5 (en) | 1969-05-13 | 1971-02-19 | Ass Eng Ltd | Moulding motor pistons |
| DE2624412A1 (en) | 1976-05-31 | 1977-12-15 | Alcan Aluminiumwerke | METHOD OF MANUFACTURING PISTONS WITH A RING CHANNEL |
| US4907545A (en) | 1988-12-28 | 1990-03-13 | Caterpillar Inc. | Liquid cooled piston ring carrier assembly and piston using same |
| JPH05240347A (en) | 1992-02-26 | 1993-09-17 | Hino Motors Ltd | Piston abrasion-proof ring for engine |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10007616B4 (en) * | 2000-02-18 | 2008-08-28 | Federal-Mogul Nürnberg GmbH | Ring carrier with cooling channel |
| WO2002040202A1 (en) * | 2000-11-18 | 2002-05-23 | Mahle Gmbh | Method of producing by casting a piston with a cooled ring carrier |
| US6837298B2 (en) | 2000-11-18 | 2005-01-04 | Mahle Gmbh | Method of producing by casting a piston with a cooled ring carrier |
| KR100865409B1 (en) * | 2000-11-18 | 2008-10-24 | 말레 게엠베하 | Method of producing by casting a piston with a cooled ring carrier |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0957256A3 (en) | 2000-04-12 |
| EP0957256B1 (en) | 2003-06-25 |
| DE19821316A1 (en) | 1999-11-18 |
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