EP0839271B1 - Keramisierter leichtmetallkolben für verbrennungsmotoren - Google Patents
Keramisierter leichtmetallkolben für verbrennungsmotoren Download PDFInfo
- Publication number
- EP0839271B1 EP0839271B1 EP96914053A EP96914053A EP0839271B1 EP 0839271 B1 EP0839271 B1 EP 0839271B1 EP 96914053 A EP96914053 A EP 96914053A EP 96914053 A EP96914053 A EP 96914053A EP 0839271 B1 EP0839271 B1 EP 0839271B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- ceramic
- piston
- metal piston
- conversion layer
- light metal
- 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.)
- Expired - Lifetime
Links
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 19
- 239000002184 metal Substances 0.000 title claims abstract description 19
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 10
- 239000000919 ceramic Substances 0.000 title description 15
- 238000006243 chemical reaction Methods 0.000 claims abstract description 19
- 229910052574 oxide ceramic Inorganic materials 0.000 claims abstract description 15
- 239000011224 oxide ceramic Substances 0.000 claims abstract description 15
- 239000003054 catalyst Substances 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 229910000838 Al alloy Inorganic materials 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 2
- 238000005524 ceramic coating Methods 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 239000010970 precious metal Substances 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910018565 CuAl Inorganic materials 0.000 description 1
- 229910020068 MgAl Inorganic materials 0.000 description 1
- 229910000943 NiAl Inorganic materials 0.000 description 1
- NPXOKRUENSOPAO-UHFFFAOYSA-N Raney nickel Chemical compound [Al].[Ni] NPXOKRUENSOPAO-UHFFFAOYSA-N 0.000 description 1
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 229910001234 light alloy Inorganic materials 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229910052703 rhodium Inorganic materials 0.000 description 1
- 239000010948 rhodium Substances 0.000 description 1
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 description 1
- 229910052707 ruthenium Inorganic materials 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- F02F3/10—Pistons having surface coverings
- F02F3/12—Pistons having surface coverings on piston heads
-
- 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
- F02F3/10—Pistons having surface coverings
-
- 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
- F02F7/00—Casings, e.g. crankcases or frames
- F02F7/0085—Materials for constructing engines or their parts
- F02F7/0087—Ceramic materials
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2201/00—Metals
- F05C2201/02—Light metals
- F05C2201/021—Aluminium
Definitions
- the invention relates to a new type of high vibration and high temperature resilient Light alloy pistons for internal combustion engines.
- EP-A-412 660 describes a heat-insulating piston, in whose piston crown area a heat-insulating element made of ceramic Material is applied. This has the disadvantage that the ceramic has insufficient adhesion to the metal surface of the piston and loosens under high loads and also causes the piston to fail leads.
- DE-PS 36 11 165 describes an integrally cast piston for one Internal combustion engine in which a ceramic plate in a cap Iron base is anchored.
- the production of such a piston is time and expensive.
- Ceramics were also sprayed on metallic pistons according to US-A-2,833,264 and DE-OS 34 04 284 or sintering a ceramic applied to the piston metal according to US-A-2,657,961.
- This method has the decisive disadvantage that thick coatings (80 to 150 ⁇ m) due to high thermal gradients and different thermal expansion in Connection with high impact loads form cracks and the bond Ceramic coating / piston is thereby destabilized at the interface.
- the invention is based on the object, a light metal piston, in particular made of aluminum or aluminum alloys, which is a high vibration and high temperature resistant heat insulating Ceramic layer and thus a high bond stability Ceramics / piston material guaranteed.
- the object is achieved by a light metal piston, Whole or part of its surface with an oxide ceramic conversion layer is covered.
- the piston can be made of aluminum or aluminum alloys (see aluminum paperback, Aluminum-Verlag Düsseldorf (1983), p. 1044) be.
- An oxide ceramic conversion layer is understood here and below to mean an oxide ceramic layer which has been produced by an anodic plasma-chemical reaction in an electrolyte from a light metal surface, preferably from aluminum or an aluminum alloy.
- a light metal surface preferably from aluminum or an aluminum alloy.
- Such layers and the processes for their production are known for example from EP-B-280 886, EP-B-545 230 and DE-OS 41 04 847.
- part of the light metal is oxidized to a ceramic.
- a crystalline Al 2 O 3 ceramic with a thickness of up to 120 ⁇ m is formed in an aluminum piston.
- Double oxides such as NiAl 2 O 4 and / or MgAl 2 O 4 and / or CuAl 2 O 4 can also be detected by X-ray analysis, for example when using the piston material AlS12CuMgNi.
- the elements for the double oxides are the alloy components of the piston material.
- This conversion layer made of ceramic on the piston has the property that it is very firmly connected to the piston and can withstand high loads such as thermal expansion up to 400 ° C and vibration loads in high cycle fatigue up to 50 x 10 6 load changes per minute.
- the piston crown of the light metal piston is completely or partially covered with an oxide ceramic conversion layer.
- the firebox and / or the top land can be provided with an oxide ceramic conversion layer be covered.
- the layer thickness is the oxide ceramic conversion layer 10 to 150 microns, preferably 60 up to 80 ⁇ m.
- combustion catalysts in the oxide ceramic conversion layer stored for the complete combustion of the fuel to carbon dioxide and serve water.
- Such catalysts are, for example, metals such as precious metals e.g. Platinum, Palladium, rhodium, ruthenium or oxidic compounds made of non-precious metals such as oxides of copper, chromium, manganese, iron, cobalt, Nickels and their combinations.
- precious metals e.g. Platinum, Palladium, rhodium, ruthenium or oxidic compounds made of non-precious metals such as oxides of copper, chromium, manganese, iron, cobalt, Nickels and their combinations.
- a light metal piston made of G-AlSiCuNi is clamped in an electrical contacting device so that only the piston head comes into contact with the electrolyte.
- the anodic plasma chemical reaction of the piston crown takes place at current densities of 5 A / dm 2 and a final voltage of 220 - 230 V.
- the layer thickness is 60 ⁇ m and is achieved with a coating time of 45 min.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Claims (7)
- Leichtmetallkolben, dadurch gekennzeichnet, daß seine Oberfläche ganz oder teilweise mit einer Oxidkeramik-Konversionsschicht überzogen ist.
- Leichtmetallkolben nach Anspruch 1, dadurch gekennzeichnet, daß der Kolbenboden ganz oder teilweise mit einer Oxidkeramik-Konversionsschicht überzogen ist.
- Leichtmetallkolben nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Brennmulde mit einer Oxidkeramik-Konversionsschicht überzogen ist.
- Leichtmetallkolben nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß auch der Feuersteg mit einer Oxidkeramik-Konversionsschicht überzogen ist.
- Leichtmetallkolben nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Schichtdicke der Oxidkeramik-Konversionsschicht 10 bis 150 µm beträgt.
- Leichtmetallkolben nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die Schichtdicke der Oxidkeramik-Konversionsschicht 60 bis 80 µm beträgt.
- Leichtmetallkolben nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß in die Oxidkeramik-Konversionsschicht Verbrennungskatalysatoren eingelagert sind.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19516815A DE19516815A1 (de) | 1995-05-08 | 1995-05-08 | Keramisierter Leichtmetallkolben für Verbrennungsmotoren |
DE19516815 | 1995-05-08 | ||
PCT/DE1996/000797 WO1996035868A1 (de) | 1995-05-08 | 1996-05-08 | Keramisierter leichtmetallkolben für verbrennungsmotoren |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0839271A1 EP0839271A1 (de) | 1998-05-06 |
EP0839271B1 true EP0839271B1 (de) | 1998-12-16 |
Family
ID=7761344
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96914053A Expired - Lifetime EP0839271B1 (de) | 1995-05-08 | 1996-05-08 | Keramisierter leichtmetallkolben für verbrennungsmotoren |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0839271B1 (de) |
AT (1) | ATE174662T1 (de) |
AU (1) | AU5758896A (de) |
DE (4) | DE19516815A1 (de) |
ES (1) | ES2127637T3 (de) |
WO (1) | WO1996035868A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10320979B4 (de) * | 2003-05-09 | 2006-01-05 | Federal-Mogul Nürnberg GmbH | Kolben für einen Verbrennungsmotor und Verfahren zur Beschichtung eines Kolbens für einen Verbrennungsmotor |
EP1657326B2 (de) † | 2004-11-16 | 2017-10-11 | Aisin Seiki Kabushiki Kaisha | Aluminium-Kolben, der zumindest teilweise mit einem Aluminiumoxidfilm bedeckt ist |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009012945A1 (de) * | 2009-03-12 | 2010-09-16 | Mtu Aero Engines Gmbh | Verfahren zur Herstellung einer abrasiven Beschichtung und Bauteil für eine Turbomaschine |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2626131C2 (de) * | 1976-06-11 | 1982-06-03 | Mahle Gmbh, 7000 Stuttgart | Harteloxierter Leichtmetallkolben für Verbrennungsmotoren |
DD275891A1 (de) * | 1988-10-03 | 1990-02-07 | Barkas Werke Veb | Brennkraftmaschine mit einem katalytisch beschichteten brennraum |
DE4037392C2 (de) * | 1990-11-22 | 1997-07-31 | Physikalisch Tech Studien Gmbh | Elektrolyt und Verfahren zur Erzeugung weißer oxidkeramischer Oberflächenschichten sowie Verwendung des Elektrolyten |
DE4139006C3 (de) * | 1991-11-27 | 2003-07-10 | Electro Chem Eng Gmbh | Verfahren zur Erzeugung von Oxidkeramikschichten auf sperrschichtbildenden Metallen und auf diese Weise erzeugte Gegenstände aus Aluminium, Magnesium, Titan oder deren Legierungen mit einer Oxidkeramikschicht |
DE4242099A1 (de) * | 1992-12-14 | 1994-06-16 | Abb Patent Gmbh | Vorrichtung, insbesondere Gasturbineneinrichtung, mit einer Beschichtung von Einrichtungsteilen |
DE4303135C2 (de) * | 1993-02-04 | 1997-06-05 | Mtu Muenchen Gmbh | Wärmedämmschicht aus Keramik auf Metallbauteilen und Verfahren zu ihrer Herstellung |
-
1995
- 1995-05-08 DE DE19516815A patent/DE19516815A1/de not_active Withdrawn
-
1996
- 1996-05-08 DE DE29680358U patent/DE29680358U1/de not_active Expired - Lifetime
- 1996-05-08 DE DE59601018T patent/DE59601018D1/de not_active Expired - Lifetime
- 1996-05-08 EP EP96914053A patent/EP0839271B1/de not_active Expired - Lifetime
- 1996-05-08 WO PCT/DE1996/000797 patent/WO1996035868A1/de active IP Right Grant
- 1996-05-08 AU AU57588/96A patent/AU5758896A/en not_active Abandoned
- 1996-05-08 ES ES96914053T patent/ES2127637T3/es not_active Expired - Lifetime
- 1996-05-08 AT AT96914053T patent/ATE174662T1/de not_active IP Right Cessation
- 1996-05-08 DE DE19680303T patent/DE19680303D2/de not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10320979B4 (de) * | 2003-05-09 | 2006-01-05 | Federal-Mogul Nürnberg GmbH | Kolben für einen Verbrennungsmotor und Verfahren zur Beschichtung eines Kolbens für einen Verbrennungsmotor |
EP1657326B2 (de) † | 2004-11-16 | 2017-10-11 | Aisin Seiki Kabushiki Kaisha | Aluminium-Kolben, der zumindest teilweise mit einem Aluminiumoxidfilm bedeckt ist |
Also Published As
Publication number | Publication date |
---|---|
ES2127637T3 (es) | 1999-04-16 |
AU5758896A (en) | 1996-11-29 |
EP0839271A1 (de) | 1998-05-06 |
ATE174662T1 (de) | 1999-01-15 |
DE19680303D2 (de) | 1997-08-21 |
DE19516815A1 (de) | 1996-11-14 |
WO1996035868A1 (de) | 1996-11-14 |
DE29680358U1 (de) | 1998-02-12 |
DE59601018D1 (de) | 1999-01-28 |
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