EP2094961A2 - Zweiteiliger kolben für einen verbrennungsmotor - Google Patents
Zweiteiliger kolben für einen verbrennungsmotorInfo
- Publication number
- EP2094961A2 EP2094961A2 EP07817720A EP07817720A EP2094961A2 EP 2094961 A2 EP2094961 A2 EP 2094961A2 EP 07817720 A EP07817720 A EP 07817720A EP 07817720 A EP07817720 A EP 07817720A EP 2094961 A2 EP2094961 A2 EP 2094961A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- piston
- bearing surfaces
- chromium layer
- partly
- microns
- 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.)
- Withdrawn
Links
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 9
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 23
- 229910052804 chromium Inorganic materials 0.000 claims description 22
- 239000011651 chromium Substances 0.000 claims description 22
- 238000001816 cooling Methods 0.000 claims description 11
- 239000000463 material Substances 0.000 abstract description 6
- 238000007789 sealing Methods 0.000 abstract 2
- 238000003466 welding Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910001141 Ductile iron Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000006911 nucleation Effects 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- 230000001960 triggered effect Effects 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
- F02F3/16—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
-
- 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
- F02F3/10—Pistons having surface coverings
-
- 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
- F05C2201/04—Heavy metals
- F05C2201/0403—Refractory metals, e.g. V, W
- F05C2201/0406—Chromium
-
- 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
- F05C2253/00—Other material characteristics; Treatment of material
- F05C2253/12—Coating
Definitions
- the invention relates to a two-part piston for an internal combustion engine according to the preamble of claim 1.
- German Patent Application No. 10 2006 015 587.4 discloses an upper part of a built-up piston which, on its lower side facing away from the piston crown, has an annular rib with an inner contact surface and an annular wall with an outer contact surface.
- Schwingungsreibverschl In order to avoid assembly of the piston upper part with a piston lower part in engine operation, resulting in relative movements of the piston upper part and the piston, Schwingungsreibverschl excreibverschl excreibverschl generate and welds the contact surfaces of the two piston parts and thus wear of the contact surfaces to be incorporated into the contact surfaces of the upper groove-shaped recesses.
- the recesses are made by turning or by means of a laser, which has the disadvantage that the production of the recesses is relatively complicated and expensive.
- FIG. 1 is a sectional view of an existing of an upper part and a lower part of the piston, which are bolted together by means of expansion bolts,
- FIG. 2 is a perspective view of the lower part of the piston and the bearing surfaces over which the upper part of the piston rests on the lower part
- Fig. 3 is a perspective view of the upper part of the piston and the bearing surfaces
- Fig. 4 shows a cross section of the support surface with a chromium layer.
- Fig. 1 shows a piston 1 for an internal combustion engine, which consists of an upper part 2 and a lower part 3.
- the upper part 2 made of steel and the lower part 3 made of nodular cast iron or aluminum, or the upper part 2 and the lower part 3 of the piston 1 made of steel.
- the upper part 2 and the lower part 3 are screwed together by means of two expansion screws 4 and 5.
- the upper part 2 forms the piston head 6, in which a combustion bowl 7 is arranged.
- the piston 1 radially outwardly a circumferential cooling channel 8, which is partly formed in the upper part 2 and partly in the lower part 3 of the piston 1.
- the cooling channel 8 is bounded radially on the outside by a ring wall 9 connected to the piston head 6 and radially inwardly by the piston head 6, partly by a circumferential upper annular rib 10 formed on the underside of the upper part 2 facing away from the piston crown and partly by a side of the lower part facing the piston head 3 attached lower annular rib 11.
- two holes 12 and 13 and in the upper ring flu 10 two blind holes 14 and 15 are introduced with internal thread in the lower annular rib.
- an inner cooling space 17 is limited, which has a lower opening 18 through which cooling oil is injected into the inner cooling space 17. 2, the cooling oil passes from the cooling space 17 into the cooling channel 8, which has an oil drain opening 20 shown in FIG. 2, via which the cooling oil is conducted into the piston interior 21.
- the lower part 3 of the piston 1 furthermore has a piston shaft 22 and two pin bores 23 and 24, which are shown in FIGS. 1 and 2.
- the upper annular rib 10 has on its underside and the lower annular rib 11 on its upper side in each case an inner, ring-shaped Positioning surface 25, 26, over which the radially inner portions of the upper part 2 and the lower part 3 of the piston 1 lie on one another.
- the end face of the annular wall 9 facing away from the piston crown and a collar 27 mounted on the upper side of the lower part 3 each have an outer, annular bearing surface 28 and 29, over which the radially outer regions of the upper part 2 and of the lower part 3 rest on one another.
- the distance of the inner bearing surfaces 25, 26 from the piston head 6 is less than the distance between the outer bearing surfaces 28, 29 from the piston head. 6
- the surface of the chromium layer 30 in this case has the form of buds or nubs.
- the roughness Rz of the chromium layer 30 is between 10 ⁇ m and 25 ⁇ m.
- the surface-structured chromium layer 30 can be applied by an electrochemical (galvanic) path, wherein nucleation processes of the chromium are triggered by means of electrical voltage pulses on the bearing surfaces and subsequently the growth of the chromium nuclei is effected by further chromium addition by means of further sequence pulses.
- the bearing surfaces 25, 26, 28, 29 of the upper part 2 and the lower part 3 existing, screwed piston 1 move in engine operation relative to each other, so that this results in a Schwingungsreibverschl founded on the bearing surfaces and a friction welding of the bearing surfaces.
- material welds of parts of the bearing surfaces result with attributable to it, partial material triggering.
- the surface The patterned chromium layer 30 according to the invention has the advantage that the oil retention volume of the structured surface of the chromium layer 30 is improved, thereby avoiding the vibration-wear and the friction welding of the relatively moving bearing surfaces.
- the structuring of the surface of the chromium layer 30 reduces the pressure-related, partial material welding and damage to the bearing surfaces.
- the chromium layer 30 is harder and thus more resistant to wear than the piston base material, so that the chromium layer has a lower frictional wear during engine operation than the prior art chromium-plated piston base material.
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)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006055251A DE102006055251A1 (de) | 2006-11-23 | 2006-11-23 | Zweiteiliger Kolben für einen Verbrennungsmotor |
PCT/DE2007/001886 WO2008061486A2 (de) | 2006-11-23 | 2007-10-23 | Zweiteiliger kolben für einen verbrennungsmotor |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2094961A2 true EP2094961A2 (de) | 2009-09-02 |
Family
ID=39204929
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07817720A Withdrawn EP2094961A2 (de) | 2006-11-23 | 2007-10-23 | Zweiteiliger kolben für einen verbrennungsmotor |
Country Status (6)
Country | Link |
---|---|
US (1) | US8631736B2 (de) |
EP (1) | EP2094961A2 (de) |
KR (1) | KR101394777B1 (de) |
CN (1) | CN202039963U (de) |
DE (1) | DE102006055251A1 (de) |
WO (1) | WO2008061486A2 (de) |
Families Citing this family (28)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009015820A1 (de) * | 2009-04-01 | 2010-10-07 | Mahle International Gmbh | Kolben für einen Verbrennungsmotor und Verfahren zu seiner Herstellung |
US8065985B2 (en) * | 2009-05-04 | 2011-11-29 | Federal-Mogul Corporation | Piston having a central cooling gallery with a contoured flange |
CN102947545B (zh) | 2010-04-27 | 2015-11-25 | 阿凯提兹动力公司 | 用于对置活塞发动机的燃烧室构造 |
US10180115B2 (en) | 2010-04-27 | 2019-01-15 | Achates Power, Inc. | Piston crown bowls defining combustion chamber constructions in opposed-piston engines |
WO2012158756A1 (en) | 2011-05-18 | 2012-11-22 | Achates Power, Inc. | Combustion chamber construction for opposed-piston engines |
US9512779B2 (en) | 2010-04-27 | 2016-12-06 | Achates Power, Inc. | Swirl-conserving combustion chamber construction for opposed-piston engines |
EP2998541B1 (de) | 2010-08-16 | 2017-01-04 | Achates Power, Inc. | Kraftstoffeinspritzmuster für motoren mit entgegengesetzten kolben |
EP2606212B1 (de) | 2010-08-16 | 2018-10-03 | Achates Power, Inc. | Kolbenkonstruktionen für motoren mit entgegengesetzten kolben |
US20130104848A1 (en) | 2011-10-27 | 2013-05-02 | Achates Power, Inc. | Fuel Injection Strategies in Opposed-Piston Engines with Multiple Fuel Injectors |
US9777668B2 (en) * | 2011-12-30 | 2017-10-03 | Componenta Finland Oy | Piston for large sized internal combustion engine |
WO2014048810A1 (de) * | 2012-09-27 | 2014-04-03 | Ks Kolbenschmidt Gmbh | Zweiteilig aufgebauter kolben einer brennkraftmaschine |
CN103016191A (zh) * | 2012-11-23 | 2013-04-03 | 大连滨城活塞制造有限公司 | 活塞裙部形线结构 |
KR101383121B1 (ko) | 2013-07-01 | 2014-04-09 | 삼영기계주식회사 | 피스톤 조립체 |
US9211797B2 (en) | 2013-11-07 | 2015-12-15 | Achates Power, Inc. | Combustion chamber construction with dual mixing regions for opposed-piston engines |
US9470136B2 (en) | 2014-03-06 | 2016-10-18 | Achates Power, Inc. | Piston cooling configurations utilizing lubricating oil from a bearing reservoir in an opposed-piston engine |
US20160053712A1 (en) * | 2014-08-19 | 2016-02-25 | Deere & Company | Piston for Use in an Engine |
US9759119B2 (en) | 2015-01-14 | 2017-09-12 | Achates Power, Inc. | Piston cooling for opposed-piston engines |
US9995213B2 (en) | 2015-03-31 | 2018-06-12 | Achates Power, Inc. | Asymmetrically-shaped combustion chamber for opposed-piston engines |
US9840965B2 (en) | 2015-07-31 | 2017-12-12 | Achates Power, Inc. | Skewed combustion chamber for opposed-piston engines |
DE102016118741A1 (de) * | 2015-10-01 | 2017-04-06 | Ks Kolbenschmidt Gmbh | Zweiteiliger Kolben mit offenem Kühlkanal |
JP6692424B2 (ja) | 2015-11-02 | 2020-05-13 | カーエス コルベンシュミット ゲゼルシャフト ミット ベシュレンクテル ハフツングKS Kolbenschmidt GmbH | 最適化されたボス支持 |
US10294887B2 (en) | 2015-11-18 | 2019-05-21 | Tenneco Inc. | Piston providing for reduced heat loss using cooling media |
US10119493B2 (en) | 2016-02-29 | 2018-11-06 | Achates Power, Inc. | Multi-layered piston crown for opposed-piston engines |
EP3452712A1 (de) | 2016-05-04 | 2019-03-13 | KS Kolbenschmidt GmbH | Kolben |
DE102016209816A1 (de) | 2016-06-03 | 2017-12-07 | Mahle International Gmbh | Zweiteiliger Kolben für eine Brennkraftmaschine |
CN113431698B (zh) * | 2020-03-23 | 2023-04-11 | 强莉莉 | 一种分体复合式隔热活塞 |
JP2023034846A (ja) * | 2021-08-31 | 2023-03-13 | マツダ株式会社 | エンジンのピストン構造 |
JP2023034872A (ja) * | 2021-08-31 | 2023-03-13 | マツダ株式会社 | エンジンのピストン構造及びエンジンシステム |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0697513A1 (de) * | 1994-08-19 | 1996-02-21 | Mahle Gmbh | Gebauter Kolben für Verbrennungsmotoren |
DE19828545C1 (de) * | 1998-06-26 | 1999-08-12 | Cromotec Oberflaechentechnik G | Galvanisches Bad, Verfahren zur Erzeugung strukturierter Hartchromschichten und Verwendung |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2046862A1 (de) * | 1970-09-23 | 1972-03-30 | Dr.Ing.H.C. F. Porsche Kg, 7000 Stuttgart | Oberflächenbeschichtung für einen aus einer Magnesiumlegierung bestehenden Kolben von Brennkraftmaschinen |
FR2127040A5 (de) * | 1971-01-19 | 1972-10-13 | Semt | |
DE2832970A1 (de) * | 1978-07-27 | 1980-02-07 | Schmidt Gmbh Karl | Gebauter, fluessigkeitsgekuehlter kolben fuer brennkraftmaschinen |
DE3222582C2 (de) * | 1982-06-16 | 1985-10-03 | Berchem & Schaberg Gmbh, 4650 Gelsenkirchen | Verfahren zum Herstellen eines Kolbenbodenrohlings durch Schmieden für einen gebauten Kolben |
DE3633134A1 (de) * | 1986-09-30 | 1988-04-07 | Man B & W Diesel Gmbh | Gebauter kolben fuer brennkraftmaschinen |
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 |
DE19833825C1 (de) * | 1998-07-28 | 1999-12-16 | Man B & W Diesel Ag | Kolben für eine Hubkolbenbrennkraftmaschine |
US6182630B1 (en) * | 1998-11-23 | 2001-02-06 | Federal-Mogul World Wide, Inc. | Bolted articulated piston |
DE102004027974A1 (de) * | 2004-06-08 | 2005-12-29 | Mahle Gmbh | Gebauter Kolben und Verfahren zur Vermeidung von Beschädigungen in Kontakt zueinander stehender Flächen des Oberteiles und des Unterteiles des Kolbens |
DE102004030218A1 (de) * | 2004-06-22 | 2006-01-19 | Mahle Gmbh | Gebauter Kolben für einen Verbrennungsmotor |
DE102006015587A1 (de) | 2006-04-04 | 2007-10-11 | Mahle International Gmbh | Oberteil eines gebauten Kolbens |
-
2006
- 2006-11-23 DE DE102006055251A patent/DE102006055251A1/de not_active Withdrawn
-
2007
- 2007-10-23 KR KR1020097010284A patent/KR101394777B1/ko active IP Right Grant
- 2007-10-23 CN CN2007900001120U patent/CN202039963U/zh not_active Expired - Lifetime
- 2007-10-23 EP EP07817720A patent/EP2094961A2/de not_active Withdrawn
- 2007-10-23 WO PCT/DE2007/001886 patent/WO2008061486A2/de active Application Filing
- 2007-10-23 US US12/312,742 patent/US8631736B2/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0697513A1 (de) * | 1994-08-19 | 1996-02-21 | Mahle Gmbh | Gebauter Kolben für Verbrennungsmotoren |
DE19828545C1 (de) * | 1998-06-26 | 1999-08-12 | Cromotec Oberflaechentechnik G | Galvanisches Bad, Verfahren zur Erzeugung strukturierter Hartchromschichten und Verwendung |
Also Published As
Publication number | Publication date |
---|---|
KR20090089331A (ko) | 2009-08-21 |
WO2008061486A3 (de) | 2011-03-03 |
US8631736B2 (en) | 2014-01-21 |
WO2008061486A2 (de) | 2008-05-29 |
CN202039963U (zh) | 2011-11-16 |
DE102006055251A1 (de) | 2008-05-29 |
US20110041684A1 (en) | 2011-02-24 |
KR101394777B1 (ko) | 2014-05-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2008061486A2 (de) | Zweiteiliger kolben für einen verbrennungsmotor | |
EP1963654B1 (de) | Kolben für einen verbrennungsmotor | |
DE10196542B4 (de) | Metalldichtung | |
DE102008034430B4 (de) | Reibgeschweißter Stahlkolben mit optimiertem Kühlkanal | |
DE4112889C2 (de) | Verfahren zur Herstellung eines Kolbenkopfes mit Kühlung für einen mehrteiligen, gegliederten Kolben für Verbrennungsmotore, sowie danach hergestellter Kolbenkopf | |
EP2603686B1 (de) | Kolben für einen verbrennungsmotor | |
EP1963655A1 (de) | Kolben für einen verbrennungsmotor und verfahren zu dessen herstellung | |
DE102006054559A1 (de) | Ventilabdeckungsanordnung für einen Fahrzeugmotor und Verfahren zu seiner Herstellung | |
DE102005029417A1 (de) | Verfahren zur Herstellung eines Kolbens für einen Verbrennungsmotor | |
EP2184478A1 (de) | Mehrteiliger Kolben für einen Verbrennungsmotor | |
WO2013004215A1 (de) | Kolben für einen verbrennungsmotor | |
DE112014000833T5 (de) | Tellerventil | |
WO2006058525A1 (de) | Zweiteiliger kolben für einen verbrennungsmotor | |
EP0855499B1 (de) | Flüssigkeitsgekühlter Kolben | |
DE4007992C2 (de) | ||
DE102004057558A1 (de) | Kolben für einen Verbrennungsmotor | |
DE102005060548A1 (de) | Zweiteiliger Kolben für einen Verbrennungsmotor | |
WO2004051119A1 (de) | Bolzennabe eines kolbens für einen verbrennungsmotor | |
DE102008058190A1 (de) | Zweiteiliger Kolben für einen Verbrennungsmotor | |
DE10306115B4 (de) | Kolben für eine Brennkraftmaschine | |
EP4136370B1 (de) | Ölabstreifring für kolben eines verbrennungsmotors | |
DE102019211336B4 (de) | Kolben mit Sicherungsringnut in der Bolzenbohrung für einen Verbrennungsmotor | |
EP2002104B1 (de) | Oberteil eines gebauten kolbens | |
DE102016225632A1 (de) | Kolben einer Brennkraftmaschine | |
DE102012025333A1 (de) | Kurbelgehäuse einer Brennkraftmaschine sowie Verfahren zum Herstellen eines Kurbelgehäuses |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20090619 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR |
|
DAX | Request for extension of the european patent (deleted) | ||
R17D | Deferred search report published (corrected) |
Effective date: 20110303 |
|
17Q | First examination report despatched |
Effective date: 20160203 |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
INTG | Intention to grant announced |
Effective date: 20190906 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20200117 |