WO2011107079A2 - Kolben für einen verbrennungsmotor - Google Patents
Kolben für einen verbrennungsmotor Download PDFInfo
- Publication number
- WO2011107079A2 WO2011107079A2 PCT/DE2011/000211 DE2011000211W WO2011107079A2 WO 2011107079 A2 WO2011107079 A2 WO 2011107079A2 DE 2011000211 W DE2011000211 W DE 2011000211W WO 2011107079 A2 WO2011107079 A2 WO 2011107079A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- piston
- closure element
- closure
- piston according
- cavity
- Prior art date
Links
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
- F02F3/18—Pistons having cooling means the means being a liquid or solid coolant, e.g. sodium, in a closed chamber in piston
-
- 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
Definitions
- the present invention relates to a piston for an internal combustion engine, which has a piston crown, a circumferential ring section, a cooling channel circulating in the region of the ring section, hub supports connected to the piston crown and piston hubs connected thereto and a piston shaft.
- the object of the present invention is to provide a piston in which the lubricating oil aging is at least delayed and the separation efficiency of the lubricating oil particles in the oil mist separator is improved.
- the solution is that below the piston head, a cavity closed on all sides is provided with a closure element arranged in the direction of the piston shaft.
- the principle underlying the present invention is to reduce the surface temperature of the piston components, with which coming from the crankcase lubricating oil comes into contact.
- an all-round closed cavity is provided according to the invention below the piston crown.
- the inventively provided cavity causes due to the air trapped therein a thermal insulation against the hot underside of the piston crown. For this reason, the closure element has a significantly lower surface temperature than the underside of the piston crown.
- the lubricating oil coming from the crankcase now has no direct contact with the hot underside of the piston crown, but impinges on the underside of the much cooler closure element.
- the resulting in this process lubricating oil particles are much larger due to the lower temperatures, so that the deposition rate is significantly improved in ⁇ lnebelabscheider or a complex design of ⁇ lnebelabscheiders is avoided.
- the aging of the lubricating oil is significantly delayed due to the lower temperatures and the formation of oil carbon is avoided.
- the present invention is suitable for all types of pistons, i. for one-piece and multi-part pistons as well as for pistons with low overall height.
- the piston according to the invention is characterized by a high stability, since cooling oil channels, which act destabilizing as points of highest stress concentration, are not provided.
- the closure element itself further improves the strength of the piston structure by an additional stiffening.
- the closure element provided according to the invention may be integrally formed with the piston.
- a closure wall formed integrally with the hub connections of the piston is preferred.
- the closure element provided according to the invention can also be designed as a separate component, in particular as a single-walled or double-walled closure body. The selection of the closure element depends essentially on the type of piston used, so that wide variations are possible in the embodiment of the present invention.
- the double-walled closure body preferably includes a chamber which acts as additional thermal insulation against the underside of the piston crown.
- the double-walled closure body may itself be formed in one piece or in two parts.
- the closure wall or the closure body is preferably connected in the region of the hub connections of the piston with this, so that a particularly large cavity closed on all sides, which forms a particularly effective thermal insulation with respect to the underside of the piston crown.
- closure element in the form of a separate component is expediently held under spring bias in the piston.
- closure element may be formed as at least partially resilient component.
- the closure element in the form of a separate component is preferably held in a receiving means provided in the piston and thus fixed particularly secure during engine operation.
- the closure element in the form of a separate component may be made of any material, wherein a spring steel sheet has been found to be well suited.
- the piston of the invention may be formed as a one-piece, for example. Cast piston.
- the piston according to the invention can furthermore be designed as a multi-part piston, for example, be composed of a piston upper part and a piston lower part.
- the components can be, for example, castings or forgings, and, for example, be made of a steel material, in particular be forged.
- the connection between the components can be done in any way.
- a particularly suitable joining method is welding, in particular friction welding.
- FIG. 1 shows a section through a first embodiment of a piston according to the invention.
- FIG. 2 shows the piston of FIG. 1 in section, the illustration with respect to FIG.
- FIG. 3 shows a section through a further embodiment of a piston according to the invention.
- FIG. 4 shows the piston according to FIG. 3 in section, the illustration being compared with FIG.
- FIG. 5 shows a section through a further embodiment of a piston according to the invention.
- Fig. 6 shows the piston according to Figure 5 in section, the illustration opposite
- Fig. 3 is rotated by 90 °.
- the present invention will be described below with reference to a two-part, consisting of an upper part and a lower part, piston.
- pistons such as one-piece pistons or pendulum pistons.
- Figures 1 and 2 show a first embodiment of a piston 10 according to the invention in the form of a box piston.
- the piston 10 according to the invention is composed of a piston upper part 11 and a piston lower part 12, which are forged in the embodiment of a steel material.
- the upper piston part 11 has a piston bottom 13 with a combustion bowl 14 and a circumferential top land 15 and a circumferential ring portion 16.
- the piston lower part 12 has a piston shaft 17 and piston hubs 18 with hub bores 19 for receiving a piston pin (not shown).
- the piston hubs 18 are connected via hub supports 21 to the underside 13 'of the piston head 13.
- the upper piston part 11 has an inner circumferential support element 22 and an outer circumferential support element 23.
- the inner support member 22 is arranged on the underside of the piston head 13 annularly circumferentially.
- the outer support member 23 is formed in the embodiment below the ring portion 16.
- the lower piston part 12 likewise has an inner circumferential support element 24 and an outer circumferential support element 25.
- the inner support member 24 is arranged circumferentially on the upper side of the piston lower part 12.
- the outer support member 25 is formed in the embodiment as an extension of the piston skirt 17.
- the hub supports 21 are formed below the inner support member 25 in the embodiment.
- the upper piston part 11 and the lower piston part 12 can be joined together in any desired manner, with the corresponding outer or inner support elements of upper piston part 11 and lower piston part 12 being connected to one another.
- the friction welding method known per se was selected, which can be seen in FIGS. 1 and 2 on the friction welding beads 26.
- the upper piston part 11 and the lower piston part 12 form a circumferential cooling channel 27.
- the annular portion 16 and the outer support element 23 of the piston upper part 11 and the outer support element 25 of the piston lower part 12 delimit the cooling channel 27 to the outside.
- the inner support member 22 of the upper piston part 11 and the inner support member 24 of the lower piston part 12 limit the cooling channel 27 to the piston interior.
- the inner support member 22 of the piston top 11 and the inner support member 24 of the piston lower part 12 further define a cavity 28 which is disposed substantially below the piston crown 13.
- the cavity 28 is closed on all sides, that is to say that the inner support elements 22, 24 of piston upper part 11 and lower piston part 12 have no openings, such as, for example, cooling oil channels.
- a closure element 29 is provided in order to close the cavity 28 in the direction of the piston stem 17 and the piston bosses 18.
- the closure element 29 is an integrally formed with the piston lower part 12 closure wall, which is integrally connected in the region of the hub supports 21 with the piston base 12, so that no lubricating oil from the crankcase or no cooling oil from the cooling channel 27 can penetrate into the cavity 28
- the cavity 28, which is closed on all sides, acts as thermal insulation against the underside 13 'of the piston bottom 13 in the region of the combustion bowl 14 during operation.
- the lubricating oil coming from the crankcase in engine operation strikes the underside 29' of the closure element 29, which is considerably cooler than the bottom side 13 'of the piston head 13.
- the resulting in this process lubricating oil particles are much larger due to the lower temperatures, so that the deposition rate is significantly improved in ⁇ lnebelabscheider or a complex design of ⁇ lnebelabscheiders is avoided.
- the aging of the lubricating oil is significantly delayed due to the lower temperatures and the formation of oil carbon is avoided.
- FIGs 3 and 4 show a further embodiment of a piston 110 according to the invention, which corresponds almost completely in its construction to the piston 10 according to Figures 1 and 2. Therefore, the references have been used for reasons of maintaining simplicity, and reference is made to the description of Figures 1 and 2.
- the closure element 129 is designed as a separate component in the form of a closure body.
- the closure element 129 is made in the embodiment of a spring steel sheet, about 0.8 mm thick and provided in the direction of the piston head 13 with a slight curvature, whereby a bias voltage is generated.
- the closure element 129 is held in the embodiment in the region of the hub supports 21 in the piston bottom 12 under resilient bias.
- a receiving means 131 in the form of a circumferential depression of about 0.5 mm in depth is formed, in which the closure element 129 is received and held.
- the upper piston part 11 and the lower piston part 12 of the piston 10 according to FIGS. 3 and 4 are connected to one another in the exemplary embodiment by means of friction welding.
- the upper piston part 11, the lower piston part 12 and the closure element 129 are produced as separate components.
- a receiving means 131 in the form of a circumferential depression of approximately 0.5 mm in depth is formed, for example by machining.
- the closure element 129 is used in the exemplary embodiment in the lower piston part 12 in the region of the hub supports 21 and held there in the receiving means 131 under spring bias.
- the upper piston part 11 and the lower piston part 12 are connected to each other by friction welding.
- the resulting Reibsch spawulste 26 serve as additional support of the closure member 129 in the axial direction.
- the closure element 129 is held liquid-tight in the piston lower part 12, so that the cavity 28 formed below the piston head 13 is closed on all sides, so that no lubricating oil from the crankcase or no cooling oil from the cooling channel 27 can penetrate into the cavity 28.
- the cavity 28, which is closed on all sides, acts as thermal insulation against the underside 13 'of the piston bottom 13 in the area of the combustion bowl 14 during operation.
- the lubricating oil coming from the crankcase during engine operation strikes the underside 129' of the closure element 129, which is considerably cooler than the bottom side 13 'of the piston head 13.
- lubricating oil particles are much larger due to the lower temperatures, so that the deposition rate in ⁇ lnebelabschei- is significantly improved or a complex design of the ⁇ lnebelab- is avoided.
- the aging of the lubricating oil is significantly delayed due to the lower temperatures and the formation of oil carbon is avoided.
- Figures 5 and 6 show a further embodiment of a piston 210 according to the invention, which corresponds almost completely in its construction to the piston 10 according to Figures 1 and 2. Therefore, the reference numerals have been retained for the sake of simplicity, and reference is made to the description of Figures 1 and 2.
- closure element 229 is formed in the piston 210 as a separate component in the form of a double-walled closure body.
- the closure element 229 is formed in two parts in the embodiment, a one-piece design is of course also conceivable.
- the two components of the closure element 229 are made in the embodiment of a spring steel sheet, joined together by welding and provided in the direction of the piston head 13 with a slight curvature, whereby a bias voltage is generated.
- the two components of the closure element 229 enclose an air-filled chamber 232 in the exemplary embodiment, which acts as additional heat insulation.
- the closure element 229 is also held in the exemplary embodiment in the region of the hub supports 21 in the piston lower part 12 under spring bias.
- a receiving means 231 in the form of a circumferential formed depression of about 0.5 mm depth, in which the closure element 229 is received and held.
- the upper piston part 11 and the lower piston part 12 of the piston 210 according to FIGS. 5 and 6 are connected to one another in the exemplary embodiment by means of friction welding.
- first the upper piston part 11, the lower piston part 12 and the closure element 229 are produced as separate components.
- a receiving means 231 in the form of a circumferential depression of about 0.5 mm in depth is formed, for example by machining.
- the closure element 229 is inserted into the piston lower part 12 in the region of the hub supports 21 and held there in the receiving means 231 under spring-biased tension.
- the upper piston part 11 and the lower piston part 12 are connected to each other by friction welding.
- the resulting Reibsch spawulste 26 serve as additional support of the closure element 229 in the axial direction.
- the closure element 229 is held liquid-tight in the piston lower part 12, so that the cavity 28 formed below the piston head 13 is closed on all sides, so that no lubricating oil from the crankcase or no cooling oil from the cooling channel 27 can penetrate into the cavity 28.
- the cavity 28, which is closed on all sides, acts as thermal insulation against the underside 13 'of the piston bottom 13 in the region of the combustion bowl 14 during operation.
- the lubricating oil coming from the crankcase during engine operation strikes the bottom 129' of the closure element 129, which is considerably cooler than the bottom side 13 'of the piston head 13.
- lubricating oil particles are much larger due to the lower temperatures, so that the deposition rate in ⁇ lnebelabschei- is significantly improved or a complex design of the ⁇ lnebelab- is avoided.
- the aging of the lubricating oil is significantly delayed due to the lower temperatures and the formation of oil carbon is avoided.
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
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2012600074U JP3182263U (ja) | 2010-03-02 | 2011-03-02 | 内燃機関に用いられるピストン |
EP11720285.3A EP2542771B1 (de) | 2010-03-02 | 2011-03-02 | Kolben für einen verbrennungsmotor |
BR112012022256A BR112012022256A2 (pt) | 2010-03-02 | 2011-03-02 | pistao para motor e combustao |
KR1020127025063A KR20130041770A (ko) | 2010-03-02 | 2011-03-02 | 내연기관용 피스톤 |
US13/582,129 US8584626B2 (en) | 2010-03-02 | 2011-03-02 | Piston for an internal combustion engine |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010009891A DE102010009891A1 (de) | 2010-03-02 | 2010-03-02 | Kolben für einen Verbrennungsmotor |
DE102010009891.4 | 2010-03-02 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2011107079A2 true WO2011107079A2 (de) | 2011-09-09 |
WO2011107079A3 WO2011107079A3 (de) | 2011-11-10 |
Family
ID=44116164
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2011/000211 WO2011107079A2 (de) | 2010-03-02 | 2011-03-02 | Kolben für einen verbrennungsmotor |
Country Status (7)
Country | Link |
---|---|
US (1) | US8584626B2 (de) |
EP (1) | EP2542771B1 (de) |
JP (1) | JP3182263U (de) |
KR (1) | KR20130041770A (de) |
BR (1) | BR112012022256A2 (de) |
DE (1) | DE102010009891A1 (de) |
WO (1) | WO2011107079A2 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104832315A (zh) * | 2014-07-21 | 2015-08-12 | 北汽福田汽车股份有限公司 | 发动机活塞和具有其的发动机 |
CN104884779A (zh) * | 2012-11-02 | 2015-09-02 | 费德罗-莫格尔公司 | 具有局部填充含导热金属组合物的冷却通道的活塞 |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011111319A1 (de) | 2011-08-26 | 2013-02-28 | Mahle International Gmbh | Kolben für einen Verbrennungsmotor |
DE102012001627A1 (de) * | 2012-01-30 | 2013-03-21 | Voith Patent Gmbh | Hubkolbenmotor, insbesondere Hubkolbendampfmotor |
DE102014223928A1 (de) * | 2014-11-25 | 2016-05-25 | Volkswagen Aktiengesellschaft | Verfahren zum Verschließen einer Kernlageröffnung eines einen Hohlraum aufweisenden Gussteiles |
US9797337B2 (en) * | 2015-07-10 | 2017-10-24 | Mahle International Gmbh | Oil-cooled piston for an internal combustion engine |
US10294887B2 (en) * | 2015-11-18 | 2019-05-21 | Tenneco Inc. | Piston providing for reduced heat loss using cooling media |
US20190010892A1 (en) * | 2017-07-10 | 2019-01-10 | Mahle International Gmbh | Piston with a cooling channel insert |
US11112009B2 (en) | 2019-04-10 | 2021-09-07 | Cummins Inc. | Low heat transfer piston via binder jet technology |
DE102019121728B3 (de) * | 2019-08-13 | 2020-11-26 | Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr | Kolben mit Ringkühlkammer für Hubkolbenbrennkraftmaschinen |
Family Cites Families (28)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DD81747A (de) * | ||||
DE81747C (de) | ||||
DE80347C (de) | ||||
DD80347A (de) * | ||||
US1089823A (en) * | 1912-06-13 | 1914-03-10 | Gen Electric | Piston for internal-combustion engines. |
US1405887A (en) | 1921-11-25 | 1922-02-07 | Krupp Ag | Piston for internal-combustion engines |
FR690997A (fr) * | 1929-06-11 | 1930-09-29 | Acro Ag | Piston pour moteurs à huile |
US2214891A (en) * | 1937-08-18 | 1940-09-17 | Oscar G Schrom | Insulated piston |
FR1574352A (de) * | 1967-07-15 | 1969-07-11 | ||
FR2088887A5 (de) * | 1970-04-28 | 1972-01-07 | Caterpillar Tractor Co | |
US4018194A (en) * | 1975-01-06 | 1977-04-19 | Texaco Inc. | Engine piston with insulated combustion chamber |
US4013047A (en) * | 1975-12-12 | 1977-03-22 | General Motors Corporation | Engine with combustion wall temperature control means |
GB2129523A (en) | 1982-10-20 | 1984-05-16 | Ae Plc | Composite pistons |
US4502422A (en) * | 1982-12-27 | 1985-03-05 | General Motors Corporation | High output oil cooled floating piston |
US4470375A (en) * | 1983-06-09 | 1984-09-11 | Automotive Engine Associates | Fully hydrodynamic piston ring and piston assembly with elastomerically conforming geometry and internal cooling |
US4493292A (en) * | 1983-06-09 | 1985-01-15 | Automotive Engine Associates | Heat piped piston |
FR2575227B1 (fr) * | 1984-12-20 | 1988-12-23 | Semt | Piston a structure allegee, notamment pour un moteur a combustion interne |
JPS63147960A (ja) | 1986-12-08 | 1988-06-20 | Kubota Ltd | 直噴デイ−ゼルエンジン用ピストン |
DE8905726U1 (de) * | 1989-05-08 | 1990-06-13 | Bergmann, Hermann, 4470 Meppen | Kolben für eine Verbrennungsmaschine |
IT1240526B (it) * | 1990-07-31 | 1993-12-17 | Borgo Nova S.P.A. | Perfezionamento relativo a pistoni, in genere. |
US6494170B2 (en) * | 2000-12-01 | 2002-12-17 | Caterpillar Inc | Two-piece piston assembly with skirt having pin bore oil ducts |
DE102005030556B8 (de) | 2005-06-22 | 2010-02-11 | Mozzi, Andreas, Dipl.-Ing. | Mehrteiliger Kolben und Verfahren zur Herstellung eines mehrteiligen Kolbens |
US7255067B1 (en) * | 2006-04-10 | 2007-08-14 | Thorpe Douglas G | Evaporative in-cylinder cooling |
DE102006027354A1 (de) * | 2006-06-13 | 2007-12-20 | Mahle International Gmbh | Mehrteiliger gekühlter Kolben für einen Verbrennungsmotor |
US7654240B2 (en) * | 2006-08-18 | 2010-02-02 | Caterpillar Inc. | Engine piston having an insulating air gap |
DE102007018932A1 (de) * | 2007-04-21 | 2008-10-23 | Ks Kolbenschmidt Gmbh | Belastungsoptimierter Innenraum eines Kolbens |
DE102008055911A1 (de) * | 2008-11-05 | 2010-05-06 | Mahle International Gmbh | Mehrteiliger Kolben für einen Verbrennungsmotor sowie Verfahren zu seiner Herstellung |
US20100108001A1 (en) * | 2008-11-05 | 2010-05-06 | Rainer Scharp | Multi-part piston for an internal combustion engine and method for its production |
-
2010
- 2010-03-02 DE DE102010009891A patent/DE102010009891A1/de not_active Withdrawn
-
2011
- 2011-03-02 US US13/582,129 patent/US8584626B2/en not_active Expired - Fee Related
- 2011-03-02 BR BR112012022256A patent/BR112012022256A2/pt not_active IP Right Cessation
- 2011-03-02 KR KR1020127025063A patent/KR20130041770A/ko not_active Application Discontinuation
- 2011-03-02 EP EP11720285.3A patent/EP2542771B1/de not_active Not-in-force
- 2011-03-02 WO PCT/DE2011/000211 patent/WO2011107079A2/de active Application Filing
- 2011-03-02 JP JP2012600074U patent/JP3182263U/ja not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
None |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104884779A (zh) * | 2012-11-02 | 2015-09-02 | 费德罗-莫格尔公司 | 具有局部填充含导热金属组合物的冷却通道的活塞 |
CN104832315A (zh) * | 2014-07-21 | 2015-08-12 | 北汽福田汽车股份有限公司 | 发动机活塞和具有其的发动机 |
Also Published As
Publication number | Publication date |
---|---|
JP3182263U (ja) | 2013-03-21 |
WO2011107079A3 (de) | 2011-11-10 |
EP2542771B1 (de) | 2016-12-28 |
EP2542771A2 (de) | 2013-01-09 |
KR20130041770A (ko) | 2013-04-25 |
BR112012022256A2 (pt) | 2016-10-25 |
DE102010009891A1 (de) | 2011-09-08 |
US20130055969A1 (en) | 2013-03-07 |
US8584626B2 (en) | 2013-11-19 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP2542771B1 (de) | Kolben für einen verbrennungsmotor | |
WO2013029592A1 (de) | Kolben für einen verbrennungsmotor | |
EP2681437B1 (de) | Kolben für einen verbrennungsmotor und verfahren zu seiner herstellung | |
DE102008055911A1 (de) | Mehrteiliger Kolben für einen Verbrennungsmotor sowie Verfahren zu seiner Herstellung | |
EP2655840B1 (de) | Kolben für einen verbrennungsmotor | |
DE102011115826A1 (de) | Kolben für einen Verbrennungsmotor | |
EP2890884A1 (de) | Kolben für einen verbrennungsmotor | |
WO2004029442A1 (de) | Mehrteiligen gekühlten kolben für einen verbrennungsmotor | |
DE102013013962A1 (de) | Baueinheit aus einem Kolben und einer Anspritzdüse für einen Verbrennungsmotor | |
EP3004609A1 (de) | Kolben für einen verbrennungsmotor | |
DE102013218709A1 (de) | Zweiteilig aufgebauter Kolben einer Brennkraftmaschine | |
DE102012014200A1 (de) | Kolben für einen Verbrennungsmotor | |
DE102007016945A1 (de) | Kolben für einen Verbrennungsmotor | |
WO2014012530A1 (de) | Kolben für einen verbrennungsmotor | |
WO2013004218A1 (de) | Kolben für einen verbrennungsmotor | |
WO2013075701A1 (de) | Kolben für einen verbrennungsmotor und verfahren zu seiner herstellung | |
WO2016135301A1 (de) | Kolben für einen verbrennungsmotor | |
WO2016173690A1 (de) | Kolben für eine hubkolben-verbrennungskraftmaschine | |
EP2864617B1 (de) | Anordnung aus einem kolben und einem kurbelgehäuse für einen verbrennungsmotor | |
EP2893177A1 (de) | Kolben für einen verbrennungsmotor | |
DE102014000253A1 (de) | Kolben für einen Verbrennungsmotor und Verfahren zu seiner Herstellung | |
DE102019219614A1 (de) | Kolben für eine Brennkraftmaschine | |
DE102012017218A1 (de) | Kolben für einen Verbrennungsmotor | |
DD243530A1 (de) | Eisenkolben fuer hubkolbenbrennkraftmaschinen | |
DE102016009053A1 (de) | Kolben für eine Hubkolben-Verbrennungskraftmaschine |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 11720285 Country of ref document: EP Kind code of ref document: A2 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2012600074 Country of ref document: JP |
|
REEP | Request for entry into the european phase |
Ref document number: 2011720285 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2011720285 Country of ref document: EP |
|
ENP | Entry into the national phase |
Ref document number: 20127025063 Country of ref document: KR Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 13582129 Country of ref document: US |
|
REG | Reference to national code |
Ref country code: BR Ref legal event code: B01A Ref document number: 112012022256 Country of ref document: BR |
|
ENP | Entry into the national phase |
Ref document number: 112012022256 Country of ref document: BR Kind code of ref document: A2 Effective date: 20120903 |