DE102004038464A1 - Piston e.g. coolant duct piston for internal combustion engine has upper section and lower section whereby both sections have three radially surrounding bars which can be brought together during assembly process - Google Patents
Piston e.g. coolant duct piston for internal combustion engine has upper section and lower section whereby both sections have three radially surrounding bars which can be brought together during assembly process Download PDFInfo
- Publication number
- DE102004038464A1 DE102004038464A1 DE200410038464 DE102004038464A DE102004038464A1 DE 102004038464 A1 DE102004038464 A1 DE 102004038464A1 DE 200410038464 DE200410038464 DE 200410038464 DE 102004038464 A DE102004038464 A DE 102004038464A DE 102004038464 A1 DE102004038464 A1 DE 102004038464A1
- Authority
- DE
- Germany
- Prior art keywords
- piston
- joining
- cooling channel
- internal combustion
- combustion engine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F3/00—Pistons
- F02F3/16—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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F3/00—Pistons
- F02F3/0015—Multi-part pistons
- F02F3/003—Multi-part pistons the parts being connected by casting, brazing, welding or clamping
- F02F2003/0061—Multi-part pistons the parts being connected by casting, brazing, welding or clamping by welding
Abstract
Description
Die Erfindung betrifft einen Kolben, insbesondere einen Kühlkanalkolben, einer Brennkraftmaschine gemäß den Merkmalen des Oberbegriffes des Patentanspruchs 1.The The invention relates to a piston, in particular a cooling channel piston, an internal combustion engine according to the features of the preamble of claim 1.
Aus
der
Bei
diesem aus der
Der Erfindung liegt daher die Aufgabe zugrunde, einen gattungsgemäßen Kolben, insbesondere Kühlkanalkolben, derart weiterzubilden, dass er hinsichtlich seiner Festigkeit und Langzeitstabilität verbesserte Eigenschaften aufweist.Of the The invention is therefore based on the object, a generic piston, in particular cooling channel pistons, in such a way that it respects its strength and Long term stability improved Features.
Diese Aufgabe ist durch die Merkmale des Patentanspruchs 1 gelöst.These The object is solved by the features of claim 1.
Erfindungsgemäß ist vorgesehen, dass sowohl das Oberteil als auch das Unterteil zumindest drei radial umlaufende Fügestege aufweist. Damit sind zwei Fügestege jeweils des Oberteiles und des Unterteiles koaxial innerhalb von vier Fügestegen angeordnet, so dass das Oberteil mit dem Unterteil nicht nur über zwei Fügebereiche, wie es bisher bekannt war, sondern über drei (oder gegebenenfalls noch mehr) Fügebereiche miteinander verbunden werden. Daraus ergibt sich eine höhere Festigkeit des gesamten Kolbenbodens, so dass die auftretenden Zünd- und Verbrennungsdrücke wesentlich besser aufgefangen werden können. Dadurch erhöht sich auch die Langzeitstabilität über die Lebensdauer des Kolbens während seines Betriebes in der Brennkraftmaschine. Durch die weiteren Fügestege wird zudem die Abstützung der Brennraummulde verbessert, insbesondere versteift, so dass die Materialdicke im Bereich der Brennraummulde reduziert werden kann, was zu einer Gewichtsersparnis führt.According to the invention, it is provided that both the upper part and the lower part at least three radially circumferential joints having. There are two joins each of the upper part and the lower part coaxial within four seams arranged so that the upper part with the lower part not only over two Joining areas, as it was previously known, but over three (or possibly still more) Joining areas be connected to each other. This results in a higher strength of the entire piston crown, so that the occurring ignition and combustion pressures can be absorbed much better. This increases also the long-term stability over the Life of the piston during his operation in the internal combustion engine. Through the other joints is also the support the combustion chamber improves, in particular stiffened, so that the Material thickness in the area of the combustion bowl can be reduced which leads to a weight saving.
Weiterhin ist erfindungsgemäß vorgesehen, dass das Oberteil und das Unterteil derart gestaltet sind, dass sie mit den weiteren Fügestegen einen weiteren Kühlkanal bilden. Damit weist der Kühlkanalkolben nicht nur einen nahezu direkt hinter dem Ringfeld liegenden Kühlkanal auf, sondern innerhalb dessen koaxial liegend noch zumindest einen weiteren Kühlkanal auf, in dem ebenfalls ein Kühlmedium (insbesondere Motoröl) zirkulieren kann, um den Kolbenboden (insbesondere den Bereich unterhalb der Brennraummulde) kühlen zu können. Je nach Gestaltung des Oberteiles, des Unterteiles und deren Fügestege können zum Beispiel drei Kühlbereiche geschaffen werden, bei denen es sich um einen äußeren und einen mittleren Kühlkanal handelt und der dritte Bereich sich unterhalb des Scheitelpunktes der Brennraummulde befindet.Farther is inventively provided that the upper part and the lower part are designed so that they are with the other joints another cooling channel form. This indicates the cooling channel piston not just a cooling channel lying almost directly behind the ring field on, but within which coaxially lying still at least one another cooling channel on, in which also a cooling medium (in particular Engine oil) can circulate to the piston crown (especially the area below the combustion chamber trough) to be able to. Depending on the design of the upper part, the lower part and their joints can For example, created three cooling areas which are an outer and a middle cooling channel and the third area is below the vertex the combustion chamber trough is located.
In Weiterbildung der Erfindung weisen die Fügestege in drei verschiedenen Fügebereichen in etwa einen gleichen Querschnitt auf. Dadurch wird innerhalb des Kolbenbodens eine nahezu gleiche Strukturfestigkeit erzielt. Der nahezu gleiche Querschnitt wirkt sich auch vorteilhaft auf den Fügevorgang aus, da immer die gleichen Energiemengen aufgebracht und nicht aufwändig aufeinander abgestimmt werden müssen.In Development of the invention, the joints in three different joint regions in about a same cross section. This will be within the Piston bottom achieved a nearly equal structural strength. Of the Almost the same cross section also has an advantageous effect on the joining process from, because always the same amounts of energy applied and not consuming each other have to be coordinated.
Bei dem Fügevorgang handelt es sich in besonders vorteilhafter Weise um ein Reibschweißverfahren, da dieses es gestattet, alle drei Fügebereiche gleichzeitig zu bearbeiten und damit das Oberteil unlösbar mit dem Unterteil zu verbinden. Die Verwendung von nur zwei Teilen (Oberteil und Unterteil) zur Herstellung des Kühlkanalkolbens führt noch zu einer Reduzierung der Teilevielfalt, die gerade bei der Serienherstellung von Kolben von Bedeutung ist. Außerdem kommt noch in Betracht, dass das Oberteil und das Unterteil in gleichen oder verschiedenen Verfahren (wie zum Beispiel Schmieden, Gießen, Pressen, Fließpressen und dergleichen) hergestellt werden kann und aus gleichen oder verschiedenen Materialien besteht. So kann beispielsweise das Oberteil aus einem hitzebeständigeren Material bestehen wie das Unterteil. Auch Gewichtsaspekte spielen hier eine Rolle. So kann beispielsweise das Oberteil aus einem Leichtbauwerkstoff (wie Aluminium) bestehen, während das Unterteil aus einem Eisenwerkstoff (zum Beispiel Grauguß) besteht.In the joining process is in a particularly advantageous manner to a friction welding process, since this allows to work all three joining areas simultaneously and thus to connect the upper part inextricably with the lower part. The use of only two parts (upper part and lower part) for the production of the cooling channel piston still leads to a reduction in the variety of parts, which is especially important in the series production of pistons. It is also contemplated that the top and bottom can be made in the same or different processes (such as forging, casting, pressing, extrusion, and the like) and made of the same or different materials. For example, the Upper part made of a more heat-resistant material as the lower part. Weight aspects also play a role here. Thus, for example, the upper part made of a lightweight material (such as aluminum), while the lower part of a ferrous material (for example, gray cast iron) consists.
Ausführungsbeispiele
der Erfindung, auf die die Erfindung jedoch nicht beschränkt ist,
sind im folgenden beschrieben und anhand der
Es zeigen:It demonstrate:
Die
Fügestege
Schließlich sei noch angemerkt, dass es sich bei den Kühlkanälen auch um Hohlräume handeln kann, die nicht von einem Kühlmedium durchströmt werden, sondern der Gewichtsersparnis im Bereich des Oberteiles (Kolbenboden) dienen. Ebenso ist die Erfindung genauso anwendbar bei einteiligen Kolben (wie in den Ausführungsbeispielen gezeigt, wobei der fertige einteilige Kolben aus dem Oberteil und dem Unterteil zusammengefügt wird) wie auch bei fertigen mehrteiligen Kolben (insbesondere Pendelschaftkolben).Finally, it should also be noted that the cooling channels can also be cavities, which are not flowed through by a cooling medium but serve to save weight in the region of the upper part (piston crown). Likewise, the Invention equally applicable to one-piece piston (as shown in the embodiments, wherein the finished one-piece piston is assembled from the upper part and the lower part) as well as in finished multi-part piston (in particular pendulum stock piston).
- 11
- KühlkanalkolbenCooling channel piston
- 22
- Oberteiltop
- 33
- Unterteillower part
- 44
- BrennraummuldeCombustion bowl
- 55
- Ringfeldring box
- 66
- Bolzenbohrungpin bore
- 77
- Kolbenschaftpiston shaft
- 77
- Erster Fügebereichfirst joining area
- 99
- Zweiter Fügebereichsecond joining area
- 1010
- Dritter Fügebereichthird joining area
- 1111
- Fügestegjoining web
- 1212
- Fügestegjoining web
- 1313
- Fügestegjoining web
- 1414
- Fügestegjoining web
- 1515
- Fügestegjoining web
- 1616
- Fügestegjoining web
- 1717
- Erste FügeebeneFirst joining plane
- 1818
- Zweite FügeebeneSecond joining plane
- 1919
- Kühlkanalcooling channel
- 2020
- Dritte Fügeebenethird joining plane
- 2121
- Weiterer KühlkanalAnother cooling channel
- 2222
- Innenbereichinterior
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200410038464 DE102004038464A1 (en) | 2004-08-07 | 2004-08-07 | Piston e.g. coolant duct piston for internal combustion engine has upper section and lower section whereby both sections have three radially surrounding bars which can be brought together during assembly process |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200410038464 DE102004038464A1 (en) | 2004-08-07 | 2004-08-07 | Piston e.g. coolant duct piston for internal combustion engine has upper section and lower section whereby both sections have three radially surrounding bars which can be brought together during assembly process |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102004038464A1 true DE102004038464A1 (en) | 2006-02-23 |
Family
ID=35721185
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200410038464 Ceased DE102004038464A1 (en) | 2004-08-07 | 2004-08-07 | Piston e.g. coolant duct piston for internal combustion engine has upper section and lower section whereby both sections have three radially surrounding bars which can be brought together during assembly process |
Country Status (1)
Country | Link |
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DE (1) | DE102004038464A1 (en) |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007082564A1 (en) * | 2006-01-21 | 2007-07-26 | Ks Kolbenschmidt Gmbh | Cooling duct piston for an internal combustion engine |
DE102007036234A1 (en) | 2007-08-02 | 2009-02-05 | Mahle International Gmbh | Device and method for processing and joining a piston |
WO2009106200A1 (en) * | 2008-02-29 | 2009-09-03 | Ks Kolbenschmidt Gmbh | Piston for internal combustion engines, produced by means of a multi-orbital friction welding method |
US8485088B2 (en) | 2006-07-07 | 2013-07-16 | Ks Kolbenschmidt Gmbh | Cooling channel piston for an internal combustion engine and method for the production thereof |
WO2013156442A1 (en) | 2012-04-18 | 2013-10-24 | Mahle International Gmbh | Piston for an internal combustion engine |
WO2014004906A1 (en) * | 2012-06-27 | 2014-01-03 | Mahle International Gmbh | Piston with cooling gallery and closed collar chamber |
US8973484B2 (en) | 2011-07-01 | 2015-03-10 | Mahle Industries Inc. | Piston with cooling gallery |
DE102014008978A1 (en) | 2014-06-17 | 2016-01-21 | Daimler Ag | Method for producing a steel piston and steel piston for an internal combustion engine |
US9856820B2 (en) | 2010-10-05 | 2018-01-02 | Mahle International Gmbh | Piston assembly |
DE102019121728B3 (en) * | 2019-08-13 | 2020-11-26 | Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr | Pistons with an annular cooling chamber for reciprocating internal combustion engines |
DE102021205709A1 (en) | 2021-06-07 | 2022-12-08 | Federal-Mogul Nürnberg GmbH | Pistons for an internal combustion engine with improved cooling of the piston crown |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5934174A (en) * | 1998-10-02 | 1999-08-10 | Cummins Engine Company, Inc. | Lightweight articulated piston head and method of making the piston head |
US6477941B1 (en) * | 1999-10-08 | 2002-11-12 | Federal-Mogul World Wide, Inc. | Dual gallery piston |
-
2004
- 2004-08-07 DE DE200410038464 patent/DE102004038464A1/en not_active Ceased
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5934174A (en) * | 1998-10-02 | 1999-08-10 | Cummins Engine Company, Inc. | Lightweight articulated piston head and method of making the piston head |
US6477941B1 (en) * | 1999-10-08 | 2002-11-12 | Federal-Mogul World Wide, Inc. | Dual gallery piston |
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007082564A1 (en) * | 2006-01-21 | 2007-07-26 | Ks Kolbenschmidt Gmbh | Cooling duct piston for an internal combustion engine |
US8485088B2 (en) | 2006-07-07 | 2013-07-16 | Ks Kolbenschmidt Gmbh | Cooling channel piston for an internal combustion engine and method for the production thereof |
DE102007036234A1 (en) | 2007-08-02 | 2009-02-05 | Mahle International Gmbh | Device and method for processing and joining a piston |
WO2009015938A1 (en) | 2007-08-02 | 2009-02-05 | Mahle International Gmbh | Device and method for machining and assembling a piston |
WO2009106200A1 (en) * | 2008-02-29 | 2009-09-03 | Ks Kolbenschmidt Gmbh | Piston for internal combustion engines, produced by means of a multi-orbital friction welding method |
US9856820B2 (en) | 2010-10-05 | 2018-01-02 | Mahle International Gmbh | Piston assembly |
US8973484B2 (en) | 2011-07-01 | 2015-03-10 | Mahle Industries Inc. | Piston with cooling gallery |
DE102012206392A1 (en) | 2012-04-18 | 2013-10-24 | Mahle International Gmbh | Piston for an internal combustion engine |
US9726109B2 (en) | 2012-04-18 | 2017-08-08 | Mahle International Gmbh | Piston for an internal combustion engine |
WO2013156442A1 (en) | 2012-04-18 | 2013-10-24 | Mahle International Gmbh | Piston for an internal combustion engine |
WO2014004906A1 (en) * | 2012-06-27 | 2014-01-03 | Mahle International Gmbh | Piston with cooling gallery and closed collar chamber |
US9657683B2 (en) | 2012-06-27 | 2017-05-23 | Mahle International Gmbh | Piston with cooling gallery and closed collar chamber |
DE102014008978A1 (en) | 2014-06-17 | 2016-01-21 | Daimler Ag | Method for producing a steel piston and steel piston for an internal combustion engine |
DE102019121728B3 (en) * | 2019-08-13 | 2020-11-26 | Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr | Pistons with an annular cooling chamber for reciprocating internal combustion engines |
DE102021205709A1 (en) | 2021-06-07 | 2022-12-08 | Federal-Mogul Nürnberg GmbH | Pistons for an internal combustion engine with improved cooling of the piston crown |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
R002 | Refusal decision in examination/registration proceedings | ||
R003 | Refusal decision now final |
Effective date: 20111029 |