EP0759519A2 - Segment de piston pour moteur à combustion interne - Google Patents
Segment de piston pour moteur à combustion interne Download PDFInfo
- Publication number
- EP0759519A2 EP0759519A2 EP96112522A EP96112522A EP0759519A2 EP 0759519 A2 EP0759519 A2 EP 0759519A2 EP 96112522 A EP96112522 A EP 96112522A EP 96112522 A EP96112522 A EP 96112522A EP 0759519 A2 EP0759519 A2 EP 0759519A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- piston
- piston ring
- ring
- coated
- hard carbon
- 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
- 238000002485 combustion reaction Methods 0.000 title claims description 6
- 229910021385 hard carbon Inorganic materials 0.000 claims abstract description 19
- 239000000463 material Substances 0.000 claims abstract description 17
- 238000000576 coating method Methods 0.000 claims abstract description 16
- 239000011248 coating agent Substances 0.000 claims abstract description 13
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 12
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 7
- 229910003460 diamond Inorganic materials 0.000 claims abstract description 6
- 239000010432 diamond Substances 0.000 claims abstract description 6
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 6
- 239000010959 steel Substances 0.000 claims abstract description 6
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 5
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 4
- 238000005268 plasma chemical vapour deposition Methods 0.000 claims abstract description 4
- 229910010271 silicon carbide Inorganic materials 0.000 claims abstract description 4
- 229910000906 Bronze Inorganic materials 0.000 claims abstract description 3
- 229910034327 TiC Inorganic materials 0.000 claims abstract description 3
- 239000010974 bronze Substances 0.000 claims abstract description 3
- 239000000919 ceramic Substances 0.000 claims abstract description 3
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 3
- 229910052802 copper Inorganic materials 0.000 claims abstract description 3
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 claims abstract description 3
- 229910052742 iron Inorganic materials 0.000 claims abstract description 3
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 3
- 229910003465 moissanite Inorganic materials 0.000 claims abstract description 3
- 229910052749 magnesium Inorganic materials 0.000 claims abstract 2
- 238000000034 method Methods 0.000 claims description 16
- 238000004519 manufacturing process Methods 0.000 claims description 7
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 6
- 229910001060 Gray iron Inorganic materials 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 5
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 4
- 229910052739 hydrogen Inorganic materials 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 239000011733 molybdenum Substances 0.000 claims description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 239000001257 hydrogen Substances 0.000 claims description 3
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 3
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 2
- 239000011651 chromium Substances 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- 239000011572 manganese Substances 0.000 claims description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims 1
- 238000007796 conventional method Methods 0.000 claims 1
- 239000011777 magnesium Substances 0.000 claims 1
- 229910052710 silicon Inorganic materials 0.000 claims 1
- 239000010703 silicon Substances 0.000 claims 1
- 229910001018 Cast iron Inorganic materials 0.000 abstract description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract 1
- 229910052593 corundum Inorganic materials 0.000 abstract 1
- 230000003746 surface roughness Effects 0.000 abstract 1
- 229910001845 yogo sapphire Inorganic materials 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 23
- 229910045601 alloy Inorganic materials 0.000 description 6
- 239000000956 alloy Substances 0.000 description 6
- 230000002787 reinforcement Effects 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 239000000969 carrier Substances 0.000 description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012791 sliding layer Substances 0.000 description 2
- 229910018566 Al—Si—Mg Inorganic materials 0.000 description 1
- 206010010904 Convulsion Diseases 0.000 description 1
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000002178 crystalline material Substances 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000010285 flame spraying Methods 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000010849 ion bombardment Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/02—Alloys based on aluminium with silicon as the next major constituent
Definitions
- the present invention relates to a method for producing piston rings for internal combustion engines and a piston with piston rings produced according to the invention.
- the piston rings inserted into the piston ring grooves in the head of pistons for internal combustion engines have the task of sealing the gap between the piston head and the cylinder wall with respect to the combustion chamber.
- the piston ring slides on the one hand with its outer circumferential surface in constant resilient contact against the cylinder wall, on the other hand the piston ring slides oscillating in its piston ring groove due to the tilting movements of the piston, its flanks, i.e. the top and bottom of the piston ring alternately rest on the upper or lower groove flank of the piston ring groove.
- sliding layers on a piston ring and a cylinder wall
- these sliding layers e.g. Nickel
- the particulate inclusions can consist of silicon carbide or diamond.
- a cast-in piston ring carrier which generally consists of austenitic gray cast iron (cf. on this, Nüral Piston Manual, edition 1983, pages 128 to 131, in particular Fig. 166).
- ring carriers solve the problem of groove wear satisfactorily and are therefore also used on a large scale.
- a ring carrier is also associated with a considerable disadvantage, since it increases the piston weight and requires complex manufacturing technology both when the piston is cast and when it is mechanically machined, which overall causes considerable additional costs.
- piston ring carriers occupy a space in the piston head that restricts the arrangement of cooling channels and does not permit them where they would be most desired, namely as close as possible to the uppermost ring groove.
- Alternatives to ring carrier castings which are also known from the prior art, are, for example, reinforcements of the uppermost ring groove by cladding or welding alloys of the groove flanks and surface layers applied by flame spraying.
- these processes also prepare large manufacturing technology Problems and very high costs so that they do not offer a satisfactory solution.
- a piston ring blank is first produced from a material customary for piston rings, for example gray cast iron or steel, machined in a known manner, provided on the outer peripheral surface with a suitable coating as a running layer opposite the cylinder liner and, if necessary, by final fine machining in brought a ready-to-install condition.
- a material customary for piston rings for example gray cast iron or steel
- the piston ring thus obtained is then coated in the plasma CVD process with a doped hard carbon layer, preferably with the formula a-C: H, where a denotes an amorphous material and C and H denote carbon and hydrogen as material constituents.
- Such a doped, super hard carbon layer is also offered under the trade name Dynamant (registered trademark) and is based on the contribution by Dr. Knut Enke "Known with modified super hard carbon against wear, corrosion and friction", which appeared in the year booktrentechnik Volume 45, 1989, of the metal publishing house. It is based on this state of the art expressly referenced with respect to the superhard, doped carbon layer and its content is considered to be part of the disclosure of this application. Ion bombardment creates a carbon modification that is neither pure graphite nor pure diamond, but rather lies between these two materials.
- the general formula aC: H means that it is an amorphous (“a”), ie non-crystalline material, which consists essentially of carbon, which contains an unspecified proportion of hydrogen.
- the hard carbon layer provided according to the invention serves primarily as a running layer opposite the groove flanks of the piston ring grooves and not necessarily as a running layer opposite the cylinder liner which is usually made of gray cast iron.
- the hard carbon layer can also be applied to the outer circumferential surface of the piston ring, since it does not interfere there, it does not bring any significant additional advantages to gray cast iron liners.
- the reinforcement of the piston ring according to the invention on its top and bottom sides, that is to say on the surfaces which come into contact with the groove flanks of the piston ring groove brings very considerable advantages.
- the hard carbon layer in the pairing of the piston ring and the piston ring groove protects both the piston ring flanks and the groove flanks in the piston material against inadmissibly high wear, even when used in highly loaded diesel engines.
- the piston rings produced according to the invention to dispense with reinforcement of the piston ring grooves, which significantly reduces the manufacturing costs of the pistons.
- a ring carrier insert for the uppermost piston ring groove can therefore be dispensed with, which makes it possible for the first time to bring the cooling channel in the piston head into the proximity to the uppermost ring groove desired from a thermal point of view. This lowers the operating temperature in the area of the uppermost ring groove and thus also contributed effectively to the operational safety of the uppermost ring groove.
- the hard carbon layer provided according to the invention also has extremely good dry running properties.
- the outer circumferential surface of the piston ring can be coated in a known manner with chromium, molybdenum, nickel, diamond or similar materials in order to reduce the wear on the circumferential running surface of the piston ring.
- the method according to the invention can be modified such that the coating of the outer peripheral surface with a special running layer is omitted, but the piston ring is coated on all sides with the hard carbon layer.
- a light metal cylinder liner i.e. for cylinder running surfaces made of aluminum alloys, for example.
- the piston rings should be coated with an end face running layer, the pairing of a piston ring coated with hard carbon on all sides, which has no further coating from the running layer on the outer circumferential surface, with a light metal cylinder liner also leads to satisfactory sliding behavior on the end face of the ring .
- nitrided steel rings can be provided without any previous end face allocation.
- an electroplated chrome coating of the end face can also be provided.
- this relates to a piston which produces at least one piston according to the invention Has piston ring.
- the piston can be made according to the invention from a heat-resistant aluminum alloy, which in particular has a composition according to claim 11.
- Such an alloy is known from DE 43 26 978 A1.
- a piston made of such an aluminum alloy which is combined with a piston ring produced according to the invention, has decisive advantages.
- the heat-resistant aluminum alloy for the piston material proposed according to the invention is advantageous not only in terms of frictional wear, but also in particular in terms of the striking stress on the ring groove flanks under the action of the oscillating in the groove with the motorized piston movement in the ring groove Piston ring.
- Other preferred heat-resistant aluminum alloys are Al-Si-Mg alloys with relatively high levels of heavy metals such as Ni, Cu, Mn and Fe. With piston alloys of this type, even the uppermost ring groove can be worked directly into the piston material when using the piston rings produced according to the invention.
- the combination according to the invention of the piston ring produced according to the invention, which is coated with hard carbon, with a piston made of a heat-resistant aluminum alloy, which has an unreinforced annular groove offers a simple, inexpensive and, in every respect, advantageous solution to the problem mentioned at the beginning.
- a piston ring blank is first produced from steel using known methods and the surface is nitrided.
- the outer circumferential surface of the piston ring is provided with a running layer opposite the cylinder liner, which consists, for example, of electroplated chrome.
- the piston ring thus obtained is machined to a roughness of Rz ⁇ 1 ⁇ m ready for installation.
- the piston ring In order to provide the piston ring thus obtained with the coating according to the invention, it is coated on all sides in the plasma CVD process with a doped hard carbon layer which has a thickness of 3 ⁇ 0.5 ⁇ m.
- This hard carbon layer which is known under the trade name Dynamant and is defined by the general formula a-C: H, makes the surfaces of the piston ring particularly slidable against the groove flanks of the respective piston ring groove with which the ring is engaged. This protects both the piston ring flanks and the groove flanks from excessive wear.
- the piston provided according to the invention is cast from a heat-resistant aluminum alloy as claimed in claim 11 and described in DE 43 26 978 A1. With regard to the alloy composition, this document is also made the subject of the disclosure of this application.
- the piston ring grooves are pierced directly into the material of the piston in the course of the usual mechanical processing, without special flank reinforcement being provided.
- the piston rings according to the invention are inserted into the piston ring grooves of the piston in a conventional manner.
- piston rings produced according to the present invention have been described above for pairing with unreinforced grooves in an aluminum piston alloy, they can also be used advantageously for pairings in grooves in ferrous materials, for example in built pistons with a light metal lower part and an upper part made of steel or cast iron.
- the piston rings produced according to the invention can also be used in pairs with grooves in the known ring carriers. Here, too, they can extend the service life of the equal surfaces under extreme loads.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19530511A DE19530511C1 (de) | 1995-08-18 | 1995-08-18 | Kolben für Verbrennungsmotoren |
| DE19530511 | 1995-08-18 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0759519A2 true EP0759519A2 (fr) | 1997-02-26 |
| EP0759519A3 EP0759519A3 (fr) | 1997-03-12 |
| EP0759519B1 EP0759519B1 (fr) | 2002-10-23 |
Family
ID=7769865
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP96112522A Expired - Lifetime EP0759519B1 (fr) | 1995-08-18 | 1996-08-02 | Segment de piston pour moteur à combustion interne |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0759519B1 (fr) |
| DE (2) | DE19530511C1 (fr) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1136730A3 (fr) * | 2000-03-23 | 2003-11-05 | Federal-Mogul Burscheid GmbH | Segment de piston comportant une couche résistante à l'usure ainsi que couche résistante à l'usure pour segment de piston |
| US6726216B2 (en) * | 2001-06-01 | 2004-04-27 | Federal-Mogul Friedberg Gmbh | Piston ring with oxide-nitride composite layer |
| EP1479946A3 (fr) * | 2003-05-23 | 2005-01-12 | Nissan Motor Company, Limited | Piston pour un moteur à combustion interne |
| US7650976B2 (en) | 2003-08-22 | 2010-01-26 | Nissan Motor Co., Ltd. | Low-friction sliding member in transmission, and transmission oil therefor |
| US8206035B2 (en) | 2003-08-06 | 2012-06-26 | Nissan Motor Co., Ltd. | Low-friction sliding mechanism, low-friction agent composition and method of friction reduction |
| US8575076B2 (en) | 2003-08-08 | 2013-11-05 | Nissan Motor Co., Ltd. | Sliding member and production process thereof |
Families Citing this family (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19720779C1 (de) * | 1997-05-17 | 1998-10-01 | Ae Goetze Gmbh | Kolbenring aus Gußeisen |
| JP3355306B2 (ja) * | 1997-09-30 | 2002-12-09 | 帝国ピストンリング株式会社 | ピストンリング |
| JP3885375B2 (ja) * | 1997-09-30 | 2007-02-21 | 帝国ピストンリング株式会社 | ピストンリング |
| DE19815484C1 (de) | 1998-04-07 | 1999-09-09 | Federal Mogul Burscheid Gmbh | Kolbenring für Brennkraftmaschinen |
| JP3555844B2 (ja) | 1999-04-09 | 2004-08-18 | 三宅 正二郎 | 摺動部材およびその製造方法 |
| JP2004138128A (ja) | 2002-10-16 | 2004-05-13 | Nissan Motor Co Ltd | 自動車エンジン用摺動部材 |
| US6969198B2 (en) | 2002-11-06 | 2005-11-29 | Nissan Motor Co., Ltd. | Low-friction sliding mechanism |
| JP3891433B2 (ja) | 2003-04-15 | 2007-03-14 | 日産自動車株式会社 | 燃料噴射弁 |
| JP2004360649A (ja) | 2003-06-06 | 2004-12-24 | Nissan Motor Co Ltd | エンジン用ピストンピン |
| JP4863152B2 (ja) | 2003-07-31 | 2012-01-25 | 日産自動車株式会社 | 歯車 |
| JP2005054617A (ja) | 2003-08-08 | 2005-03-03 | Nissan Motor Co Ltd | 動弁機構 |
| JP4117553B2 (ja) | 2003-08-13 | 2008-07-16 | 日産自動車株式会社 | チェーン駆動装置 |
| DE602004008547T2 (de) | 2003-08-13 | 2008-05-21 | Nissan Motor Co., Ltd., Yokohama | Struktur zur Verbindung von einem Kolben mit einer Kurbelwelle |
| US7771821B2 (en) | 2003-08-21 | 2010-08-10 | Nissan Motor Co., Ltd. | Low-friction sliding member and low-friction sliding mechanism using same |
| JP4539205B2 (ja) | 2003-08-21 | 2010-09-08 | 日産自動車株式会社 | 冷媒圧縮機 |
| JP4076169B2 (ja) * | 2004-07-06 | 2008-04-16 | 株式会社豊田中央研究所 | 非晶質硬質炭素膜を備えたピストンリング、ピストン、シリンダ、ピストンピン |
| DE102006043303B4 (de) * | 2006-09-14 | 2016-06-16 | Mahle International Gmbh | Gleitelement und Verfahren zu seiner Herstellung |
| DE102010002688C5 (de) | 2010-03-09 | 2014-03-06 | Federal-Mogul Burscheid Gmbh | Schraubendruckfeder für einen Ölabstreifring eines Kolbens in einem Verbrennungsmotor und Verfahren zur Beschichtung einer Schraubendruckfeder |
| DE102011083972A1 (de) * | 2011-10-04 | 2013-04-04 | Federal-Mogul Nürnberg GmbH | Verfahren zur Herstellung eines Motorbauteils und Motorbauteil |
| DE102011083971A1 (de) * | 2011-10-04 | 2013-04-04 | Federal-Mogul Nürnberg GmbH | Verfahren zur Herstellung eines Motorbauteils und Motorbauteil |
| US20150044079A1 (en) * | 2012-03-30 | 2015-02-12 | Kayaba Industry Co., Ltd. | Sliding members and piston pump/motor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1751573A1 (de) | 1968-06-21 | 1971-05-19 | Goetzewerke | Kolbenring fuer Brennkraftmaschinen |
| DE2156127A1 (de) | 1970-12-12 | 1972-06-29 | Nippon Piston Ring Co Ltd | Gleitelementpaar wie Kolbenring und Zylinderwandung |
| JPS6258050A (ja) | 1985-09-05 | 1987-03-13 | Toyota Motor Corp | ピストンリング |
| DE4326978A1 (de) | 1993-08-11 | 1995-02-16 | Alcan Gmbh | Kolben für Brennkraftmaschinen, insbesondere für Dieselmotoren |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3623360A1 (de) * | 1986-07-11 | 1988-01-14 | Cameron Iron Works Gmbh | Einrichtung mit einander benachbarten oberflaechen, zwischen denen hohe druecke und/oder hohe reibungsbeanspruchungen auftreten |
| DE3741549A1 (de) * | 1986-12-09 | 1988-06-23 | Gedib Ingenieurbuero U Innovat | Verfahren zum herstellen eines spannfutters, gemaess dem verfahren gefertigtes spannfutter und gleitstueck fuer dieses |
| JP2687320B2 (ja) * | 1990-04-17 | 1997-12-08 | 株式会社リケン | ピストンリング |
| JPH05306461A (ja) * | 1992-04-28 | 1993-11-19 | Riken Corp | 内燃機関の耐摩耗性摺動部材 |
| DE4325520A1 (de) * | 1992-08-08 | 1994-02-10 | Nagel Masch Werkzeug | Bauteil im Bereich von Arbeitsräumen, wie Verbrennungsräumen, von Kraft- oder Arbeitsmaschinen mit einer Beschichtung |
| JPH06258050A (ja) * | 1993-03-04 | 1994-09-16 | Hitachi Seiki Co Ltd | 砥石形状計測装置 |
| DE29605666U1 (de) * | 1996-03-27 | 1996-05-30 | Volkswagen Ag, 38440 Wolfsburg | Bauteil im Bereich von Verbrennungsräumen |
-
1995
- 1995-08-18 DE DE19530511A patent/DE19530511C1/de not_active Revoked
-
1996
- 1996-08-02 DE DE59609811T patent/DE59609811D1/de not_active Expired - Fee Related
- 1996-08-02 EP EP96112522A patent/EP0759519B1/fr not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1751573A1 (de) | 1968-06-21 | 1971-05-19 | Goetzewerke | Kolbenring fuer Brennkraftmaschinen |
| DE2156127A1 (de) | 1970-12-12 | 1972-06-29 | Nippon Piston Ring Co Ltd | Gleitelementpaar wie Kolbenring und Zylinderwandung |
| JPS6258050A (ja) | 1985-09-05 | 1987-03-13 | Toyota Motor Corp | ピストンリング |
| DE4326978A1 (de) | 1993-08-11 | 1995-02-16 | Alcan Gmbh | Kolben für Brennkraftmaschinen, insbesondere für Dieselmotoren |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1136730A3 (fr) * | 2000-03-23 | 2003-11-05 | Federal-Mogul Burscheid GmbH | Segment de piston comportant une couche résistante à l'usure ainsi que couche résistante à l'usure pour segment de piston |
| US6726216B2 (en) * | 2001-06-01 | 2004-04-27 | Federal-Mogul Friedberg Gmbh | Piston ring with oxide-nitride composite layer |
| EP1479946A3 (fr) * | 2003-05-23 | 2005-01-12 | Nissan Motor Company, Limited | Piston pour un moteur à combustion interne |
| CN1325822C (zh) * | 2003-05-23 | 2007-07-11 | 日产自动车株式会社 | 内燃机用活塞 |
| US7406940B2 (en) | 2003-05-23 | 2008-08-05 | Nissan Motor Co., Ltd. | Piston for internal combustion engine |
| US8206035B2 (en) | 2003-08-06 | 2012-06-26 | Nissan Motor Co., Ltd. | Low-friction sliding mechanism, low-friction agent composition and method of friction reduction |
| US8575076B2 (en) | 2003-08-08 | 2013-11-05 | Nissan Motor Co., Ltd. | Sliding member and production process thereof |
| US7650976B2 (en) | 2003-08-22 | 2010-01-26 | Nissan Motor Co., Ltd. | Low-friction sliding member in transmission, and transmission oil therefor |
Also Published As
| Publication number | Publication date |
|---|---|
| DE19530511C1 (de) | 1997-02-20 |
| DE59609811D1 (de) | 2002-11-28 |
| EP0759519A3 (fr) | 1997-03-12 |
| EP0759519B1 (fr) | 2002-10-23 |
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