WO2005046928A1 - Verfahren zur herstellung eines kolbens für einen verbrennungsmotor - Google Patents
Verfahren zur herstellung eines kolbens für einen verbrennungsmotor Download PDFInfo
- Publication number
- WO2005046928A1 WO2005046928A1 PCT/DE2004/002415 DE2004002415W WO2005046928A1 WO 2005046928 A1 WO2005046928 A1 WO 2005046928A1 DE 2004002415 W DE2004002415 W DE 2004002415W WO 2005046928 A1 WO2005046928 A1 WO 2005046928A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- piston
- recess
- combustion engine
- producing
- ring element
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/10—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass pistons
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/0009—Cylinders, pistons
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/04—Casting in, on, or around objects which form part of the product for joining parts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F3/00—Pistons
- F02F3/0015—Multi-part pistons
- F02F3/003—Multi-part pistons the parts being connected by casting, brazing, welding or clamping
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F3/00—Pistons
- F02F3/16—Pistons having cooling means
- F02F3/20—Pistons having cooling means the means being a fluid flowing through or along piston
- F02F3/22—Pistons having cooling means the means being a fluid flowing through or along piston the fluid being liquid
Definitions
- the invention relates to a method for producing a piston for an internal combustion engine, according to which a ring element cast from aluminum is welded to a base body forged from aluminum by means of a charge carrier beam.
- the ring element and the base body delimit an annular cooling channel.
- the object of the invention is to avoid this disadvantage of the prior art.
- the object is achieved in that, before the base body is welded to the ring element, a solvent-soluble material is introduced into a recess resulting in the cooling channel, which prevents liquid material from the weld seams ending in the cooling channel from reaching the bottom of the cooling channel to damage it. After the welding process, the material is dissolved by the solvent and rinsed out of the cooling channel.
- Show it 1 shows a piston for an internal combustion engine with an aluminum ring element according to the invention in a sectional view consisting of two halves, which shows two longitudinal sections of the piston offset by 90 °, and
- Fig. 2 is an enlarged view of the section through the edge region of the piston crown with the ring element.
- a piston 1 for an internal combustion engine in a sectional view consisting of two halves, of which the left half is a section of the piston 1 along a longitudinal axis 2 of a hub bore 3 and the right half is a section through the piston offset by 90 ° 1 shows.
- the piston 1 consists of an essentially cylindrical base body 4, one end face of which forms the piston head 5.
- a recess 17 with a rectangular cross section is formed in the radially outer region of the piston crown 5, into which a ring element 6 is fitted.
- a combustion chamber 7 is arranged in the central region of the piston crown 5.
- the base body 4 has, on its underside facing away from the piston crown 5, pin bosses 8 for the hub bores 3 and the pin bosses 8 connecting shaft elements 9.
- a ring carrier 10 is arranged with an annular groove 11 for a compression ring, not shown in the figure.
- the ring carrier 10 is followed by a further annular groove 12 machined into the ring element 6.
- the base body 4 has an oil ring groove 13 following the further ring groove 12 in the direction of the shaft elements 9 for an oil scraper ring, not shown in the figure.
- the piston 1 is provided with a cooling channel 14, which is formed from a recess 15 machined into the recess 17 and from a recess 18 machined into the inside 16 of the ring element 6.
- Oil drain openings between the inner surface 22 of the piston and the cooling channel 14 cooling oil is introduced into the cooling channel 14 and drained therefrom.
- a raw form of the base body 4 is produced from aluminum in the forging process.
- the base body 4 is machined using machining manufacturing processes (turning, milling, drilling), the cutout 17, which is rectangular in section according to the present exemplary embodiment and the cutout 15 which has the shape of a three-quarter circle in cross section.
- the ring element 6 is cast from aluminum, the ring carrier 10 consisting of NiResist being cast into the ring element 6 in the composite casting process.
- the ring element 6 is then finished, to which the shape of the recess 17 is given, the ring groove 11 being machined into the ring carrier 10 by means of a machining production process (for example turning) and the further ring groove 12 also being worked into the ring element 6.
- the recess 18 is screwed into the region of the inner side 16 of the ring element 6 which is close to the further annular groove 12 and is shaped such that it forms the cooling channel 14 with the recess 15.
- salt granulate is filled into the recess 15 and compressed using two half-shells, a salt core being formed.
- the half-shells are removed and the ring element 6 is fitted into the recess 17 of the base body 4.
- the inside 16 of the ring element 6 is welded to the edge region 19 on the piston head side and also the surfaces 20 or 21 of the ring element 6 or the base body 4 arranged perpendicularly thereto by means of the electron beam welding method.
- Weld seams are formed on the surfaces 16, 19, 20, 21, the salt core having the function of preventing the liquid aluminum that forms on the weld seams from reaching the sides of the cooling channel 14 opposite the weld seams and damaging them.
- the salt core is washed out of the cooling channel 14 via the oil inlet and oil outlet openings subsequently drilled into the piston 1 between the piston inner surface 22 and the cooling channel 14.
- the recess 15 can also be filled with plasticine, which does not harden at the high temperatures occurring during welding, but remains soft and can be washed out with water after the welding process.
- FIG. 2 shows the edge region of the piston 1 according to the invention on the piston-bottom side with the ring element 6, the ring carrier 10 made of NiResist cast therein and the cooling channel 14 formed by the base body 4 and the ring element 6.
- the surfaces forming the inside 16 of the ring element 6 or the edge region 19 of the base body 4 can be inclined towards the combustion chamber 7, so that they taper conically towards the piston crown 5. Furthermore, the surfaces 20 and 21 of the ring element 6 and the base body 4 can have an orientation that deviates from the radial axial direction. LIST OF REFERENCE NUMBERS
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2003152246 DE10352246A1 (de) | 2003-11-08 | 2003-11-08 | Verfahren zur Herstellung eines Kolbens für einen Verbrennungsmotor |
DE10352246.8 | 2003-11-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005046928A1 true WO2005046928A1 (de) | 2005-05-26 |
Family
ID=34559502
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2004/002415 WO2005046928A1 (de) | 2003-11-08 | 2004-10-30 | Verfahren zur herstellung eines kolbens für einen verbrennungsmotor |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE10352246A1 (de) |
WO (1) | WO2005046928A1 (de) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012130839A1 (de) * | 2011-03-30 | 2012-10-04 | Federal-Mogul Nürnberg GmbH | Verfahren zur herstellung eines kolbens für einen verbrennungsmotor sowie kolben für einen verbrennungsmotor |
WO2013007236A1 (de) * | 2011-07-12 | 2013-01-17 | Mahle International Gmbh | Verfahren zur herstellung eines kolbens für einen verbrennungsmotor sowie kolben für einen verbrennungsmotor |
WO2013007238A1 (de) * | 2011-07-12 | 2013-01-17 | Mahle International Gmbh | Verfahren zur herstellung eines kolbens für einen verbrennungsmotor sowie kolben für einen verbrennungsmotor |
WO2014113446A3 (en) * | 2013-01-15 | 2014-09-12 | Mahle International Gmbh | Method of laser welding a piston using inside space backing |
WO2020123094A1 (en) * | 2018-12-13 | 2020-06-18 | Caterpillar Inc. | Method for remanufacturing a used piston and piston |
US10865734B2 (en) | 2017-12-06 | 2020-12-15 | Ai Alpine Us Bidco Inc | Piston assembly with offset tight land profile |
CN113482794A (zh) * | 2021-08-19 | 2021-10-08 | 湖南江滨机器(集团)有限责任公司 | 一种内燃机钢活塞的成型方法及挡渣芯 |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012024406A1 (de) | 2012-12-14 | 2013-05-16 | Wössner GmbH | Kolben für Verbrennungsmotoren |
DE102015220256A1 (de) * | 2015-10-19 | 2017-04-20 | Mahle International Gmbh | Verfahren zur Herstellung eines Kolbens |
DE102016226014A1 (de) * | 2016-12-22 | 2018-06-28 | Federal-Mogul Nürnberg GmbH | Strahlschweißverfahren und Verwendung eines Salzkerns in einem Strahlschweißverfahren |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH407712A (de) * | 1963-04-09 | 1966-02-15 | Nova Werke Junker & Ferber | Verfahren zum Herstellen mehrteiliger Kolben für Brennkraftmaschinen und nach dem Verfahren hergestellter Kolben |
US3319536A (en) * | 1965-03-13 | 1967-05-16 | Mahle Kg | Piston for internal combustion engines |
US3413897A (en) * | 1965-06-17 | 1968-12-03 | Trw Inc | Oil gallery equipped pistons and methods of making same |
DE2017925A1 (de) * | 1970-04-15 | 1971-10-28 | Karl Schmidt Gmbh, 7107 Neckarsulm | Kolben für Verbrennungskraftmaschinen |
DE2141054A1 (de) * | 1971-08-17 | 1973-03-29 | Schmidt Gmbh Karl | Gekuehlter leichtmetallkolben |
US4651631A (en) * | 1984-05-30 | 1987-03-24 | Ae Plc | Manufacture of pistons |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH450062A (de) * | 1964-11-26 | 1968-01-15 | Mahle Kg | Brennkraftmaschinenkolben |
GB1277579A (en) * | 1968-07-15 | 1972-06-14 | Wellworthy Ltd | Pistons |
DE10230745B4 (de) * | 2002-07-09 | 2005-09-22 | Ks Kolbenschmidt Gmbh | Verfahren zur Herstellung eines Kolbens mit kurzer Kompressionshöhe |
-
2003
- 2003-11-08 DE DE2003152246 patent/DE10352246A1/de not_active Withdrawn
-
2004
- 2004-10-30 WO PCT/DE2004/002415 patent/WO2005046928A1/de active Application Filing
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH407712A (de) * | 1963-04-09 | 1966-02-15 | Nova Werke Junker & Ferber | Verfahren zum Herstellen mehrteiliger Kolben für Brennkraftmaschinen und nach dem Verfahren hergestellter Kolben |
US3319536A (en) * | 1965-03-13 | 1967-05-16 | Mahle Kg | Piston for internal combustion engines |
US3413897A (en) * | 1965-06-17 | 1968-12-03 | Trw Inc | Oil gallery equipped pistons and methods of making same |
DE2017925A1 (de) * | 1970-04-15 | 1971-10-28 | Karl Schmidt Gmbh, 7107 Neckarsulm | Kolben für Verbrennungskraftmaschinen |
DE2141054A1 (de) * | 1971-08-17 | 1973-03-29 | Schmidt Gmbh Karl | Gekuehlter leichtmetallkolben |
US4651631A (en) * | 1984-05-30 | 1987-03-24 | Ae Plc | Manufacture of pistons |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012130839A1 (de) * | 2011-03-30 | 2012-10-04 | Federal-Mogul Nürnberg GmbH | Verfahren zur herstellung eines kolbens für einen verbrennungsmotor sowie kolben für einen verbrennungsmotor |
JP2014510231A (ja) * | 2011-03-30 | 2014-04-24 | フェデラル−モーグル ニュルンベルグ ゲゼルシャフト ミット ベシュレンクテル ハフツング | 内燃機関用ピストンの製造方法および内燃機関用ピストン |
US9216480B2 (en) | 2011-03-30 | 2015-12-22 | Federal-Mogul Nurnberg Gmbh | Process for producing a piston for an internal combustion engine and piston for an internal combustion engine |
WO2013007236A1 (de) * | 2011-07-12 | 2013-01-17 | Mahle International Gmbh | Verfahren zur herstellung eines kolbens für einen verbrennungsmotor sowie kolben für einen verbrennungsmotor |
WO2013007238A1 (de) * | 2011-07-12 | 2013-01-17 | Mahle International Gmbh | Verfahren zur herstellung eines kolbens für einen verbrennungsmotor sowie kolben für einen verbrennungsmotor |
WO2014113446A3 (en) * | 2013-01-15 | 2014-09-12 | Mahle International Gmbh | Method of laser welding a piston using inside space backing |
US9440310B2 (en) | 2013-01-15 | 2016-09-13 | Mahle International Gmbh | Monolite piston laser welding spatter control |
US10865734B2 (en) | 2017-12-06 | 2020-12-15 | Ai Alpine Us Bidco Inc | Piston assembly with offset tight land profile |
WO2020123094A1 (en) * | 2018-12-13 | 2020-06-18 | Caterpillar Inc. | Method for remanufacturing a used piston and piston |
US10926362B2 (en) | 2018-12-13 | 2021-02-23 | Caterpillar Inc. | Remanufactured engine piston and method |
CN113482794A (zh) * | 2021-08-19 | 2021-10-08 | 湖南江滨机器(集团)有限责任公司 | 一种内燃机钢活塞的成型方法及挡渣芯 |
Also Published As
Publication number | Publication date |
---|---|
DE10352246A1 (de) | 2005-06-09 |
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