EP0697513A1 - Piston composite pour moteur à combustion interne - Google Patents
Piston composite pour moteur à combustion interne Download PDFInfo
- Publication number
- EP0697513A1 EP0697513A1 EP95109581A EP95109581A EP0697513A1 EP 0697513 A1 EP0697513 A1 EP 0697513A1 EP 95109581 A EP95109581 A EP 95109581A EP 95109581 A EP95109581 A EP 95109581A EP 0697513 A1 EP0697513 A1 EP 0697513A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- layer
- piston
- internal combustion
- combustion engine
- solid lubricant
- 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
Images
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
- F02F3/0015—Multi-part pistons
- F02F3/0023—Multi-part pistons the parts being bolted or screwed together
-
- 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
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B3/00—Engines characterised by air compression and subsequent fuel addition
- F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
Definitions
- the invention relates to a piston built for internal combustion engines with the features according to the preamble of the claim.
- Such a piston built for internal combustion engines is known from DE-PS 36 33 134.
- this built piston with a piston body made of light metal and a piston head made of an iron material, which is supported with the end face of an annular support collar arranged on the inside on an annular support rib arranged on the upper side of the lower piston part, and which by means of several parallel to the piston axis in the area the ring rib arranged screws is connected to the lower piston part, the supporting surface of the annular rib of the lower piston part is covered by a thin, smooth and hard layer of a highly wear-resistant material.
- a layer of highly wear-resistant material is intended to effectively protect the softer base material of the lower piston part from material erosion due to fretting corrosion.
- Such layers are relatively expensive and the application of the layer, such as. B. in detonation spraying or by electrodeposition is very expensive.
- the present invention is concerned with the problem of finding a resistant layer in a built-in piston for the bearing surface between the upper and lower piston parts, which layer is particularly simple and environmentally friendly to raise and is relatively cheap.
- Such a layer is known per se as a running layer for a piston from DE-OS 41 33 546.
- a running layer which is generally known to be soft and abrasion-resistant, for coating the contact surface of the upper and lower piston parts of a built-up piston from different materials, in order to prevent signs of wear from fretting corrosion.
- a layer of solid lubricant bonded in hardened resin can be used even at very high surface pressures and short glide paths - the amplitudes of the relative movements between the upper and lower piston parts are less than 1 mm - and offers effective wear protection.
- An upper piston part 1 with an inner annular rib 2 is connected to a lower piston part 4 via screws 3.
- the screws 3 engage on the ring rib 2 in threaded blind holes 5.
- a layer 6 of solid lubricant, such as graphite, bonded in hardened resin is applied, for example, by spraying on the ring-rib-like contact surface 7 of the lower piston part 4.
- the contact surfaces 8 and 9 can also be coated will.
- the layer can also be applied by simple brushing or using the screen printing method known per se.
- the layer has a thickness of between 10 and 30 micrometers, the solid lubricant particles being between 1 and 10 micrometers in size and the proportion of solid lubricant particles being between 30 and 60% by weight.
- Curable polyimide is to be used as the binder.
- solvent in the material applied to produce the layer for example by screen printing, which can be, for example, N-methyl-pyrrolidone (NMP).
- NMP N-methyl-pyrrolidone
- the proportion of the solvent in the layer starting material to be applied is approximately 50% by weight.
- the temperature for curing is 150 degrees to 220 degrees Celsius, and curing takes between 10 and 30 minutes.
- a layer for the bearing surface between the upper and lower parts of the piston is surprisingly found in a built piston, which layer is relatively cheap and can be applied with little effort.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4429489A DE4429489A1 (de) | 1994-08-19 | 1994-08-19 | Gebauter Kolben für Verbrennungsmotoren |
DE4429489 | 1994-08-19 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0697513A1 true EP0697513A1 (fr) | 1996-02-21 |
EP0697513B1 EP0697513B1 (fr) | 1998-09-23 |
Family
ID=6526118
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95109581A Expired - Lifetime EP0697513B1 (fr) | 1994-08-19 | 1995-06-21 | Piston composite pour moteur à combustion interne |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0697513B1 (fr) |
JP (1) | JP3723608B2 (fr) |
DE (2) | DE4429489A1 (fr) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2343933A (en) * | 1998-11-19 | 2000-05-24 | Wecometal Oy | Combustion engine piston |
WO2001017695A2 (fr) * | 1999-09-04 | 2001-03-15 | Federal-Mogul Technology Limited | Application d'un revetement a coefficient de frottement et a usure faibles |
DE19943945A1 (de) * | 1999-09-14 | 2001-03-22 | Federal Mogul Wiesbaden Gmbh | Kolbenkopf |
WO2005121537A1 (fr) * | 2004-06-08 | 2005-12-22 | Mahle Gmbh | Piston construit et procede permettant d'empecher l'endommagement des surfaces de la partie superieure et de la partie inferieure du piston, ces surfaces etant en contact l'une avec l'autre |
EP2094961A2 (fr) * | 2006-11-23 | 2009-09-02 | MAHLE International GmbH | Piston en deux parties pour un moteur à combustion interne |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19642109A1 (de) * | 1996-10-12 | 1998-04-16 | Mahle Gmbh | Gebauter Kolben |
DE19855134A1 (de) * | 1998-11-30 | 2000-05-31 | Mahle Gmbh | Gebauter Kolben |
DE19910582A1 (de) * | 1999-03-10 | 2000-09-28 | Mahle Gmbh | Gebauter Kolben |
DE19919725A1 (de) * | 1999-04-30 | 2000-11-02 | Mahle Gmbh | Kolbenmotor mit einem Zylinder aus Leichtmetall |
DE10015352C1 (de) * | 2000-03-28 | 2001-07-19 | Peter Rong | Gebauter Kolben |
DE10210570A1 (de) * | 2002-03-09 | 2003-09-18 | Mahle Gmbh | Mehrteiliger gekühlter Kolben für einen Verbrennungsmotor |
CN111102095B (zh) * | 2019-12-20 | 2021-05-28 | 中国北方发动机研究所(天津) | 一种低散热组合结构活塞 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE7925700U1 (de) * | 1979-09-11 | 1986-02-06 | Mtu Motoren- Und Turbinen-Union Friedrichshafen Gmbh, 7990 Friedrichshafen | Kolben für eine Brennkraftmaschine |
US5029562A (en) * | 1989-12-05 | 1991-07-09 | Adiabatics, Inc. | Hybrid piston for high temperature engine |
DE4029315A1 (de) * | 1990-09-15 | 1992-03-19 | Mahle Gmbh | Tauchkolben fuer verbrennungsmotoren |
DE3633134C2 (fr) | 1986-09-30 | 1992-07-30 | Man B & W Diesel Ag, 8900 Augsburg, De | |
DE4133546A1 (de) | 1991-10-10 | 1993-04-15 | Mahle Gmbh | Kolben-zylinderanordnung eines verbrennungsmotors |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3240224A1 (de) * | 1982-09-08 | 1984-03-08 | Alcan Aluminiumwerk Nürnberg GmbH, 6000 Frankfurt | Kolben fuer brennkraftmaschinen |
DE3347292C2 (de) * | 1983-12-28 | 1986-06-19 | M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8900 Augsburg | Ölgekühlter, gebauter Kolben für Brennkraftmaschinen |
-
1994
- 1994-08-19 DE DE4429489A patent/DE4429489A1/de not_active Withdrawn
-
1995
- 1995-06-21 EP EP95109581A patent/EP0697513B1/fr not_active Expired - Lifetime
- 1995-06-21 DE DE59503675T patent/DE59503675D1/de not_active Expired - Lifetime
- 1995-08-16 JP JP20888195A patent/JP3723608B2/ja not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE7925700U1 (de) * | 1979-09-11 | 1986-02-06 | Mtu Motoren- Und Turbinen-Union Friedrichshafen Gmbh, 7990 Friedrichshafen | Kolben für eine Brennkraftmaschine |
DE3633134C2 (fr) | 1986-09-30 | 1992-07-30 | Man B & W Diesel Ag, 8900 Augsburg, De | |
US5029562A (en) * | 1989-12-05 | 1991-07-09 | Adiabatics, Inc. | Hybrid piston for high temperature engine |
DE4029315A1 (de) * | 1990-09-15 | 1992-03-19 | Mahle Gmbh | Tauchkolben fuer verbrennungsmotoren |
DE4133546A1 (de) | 1991-10-10 | 1993-04-15 | Mahle Gmbh | Kolben-zylinderanordnung eines verbrennungsmotors |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2343933A (en) * | 1998-11-19 | 2000-05-24 | Wecometal Oy | Combustion engine piston |
GB2343933B (en) * | 1998-11-19 | 2002-10-09 | Wecometal Oy | Combustion engine piston |
WO2001017695A2 (fr) * | 1999-09-04 | 2001-03-15 | Federal-Mogul Technology Limited | Application d'un revetement a coefficient de frottement et a usure faibles |
WO2001017695A3 (fr) * | 1999-09-04 | 2001-11-15 | Federal Mogul Technology Ltd | Application d'un revetement a coefficient de frottement et a usure faibles |
DE19943945A1 (de) * | 1999-09-14 | 2001-03-22 | Federal Mogul Wiesbaden Gmbh | Kolbenkopf |
US6435077B1 (en) | 1999-09-14 | 2002-08-20 | Federal-Mogul Wiesbaden Gmbh | Piston head |
WO2005121537A1 (fr) * | 2004-06-08 | 2005-12-22 | Mahle Gmbh | Piston construit et procede permettant d'empecher l'endommagement des surfaces de la partie superieure et de la partie inferieure du piston, ces surfaces etant en contact l'une avec l'autre |
EP2094961A2 (fr) * | 2006-11-23 | 2009-09-02 | MAHLE International GmbH | Piston en deux parties pour un moteur à combustion interne |
Also Published As
Publication number | Publication date |
---|---|
JPH0868358A (ja) | 1996-03-12 |
DE59503675D1 (de) | 1998-10-29 |
DE4429489A1 (de) | 1996-02-22 |
JP3723608B2 (ja) | 2005-12-07 |
EP0697513B1 (fr) | 1998-09-23 |
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