EP2964939B1 - Piston with anti-carbon deposit coating and method of construction thereof - Google Patents
Piston with anti-carbon deposit coating and method of construction thereof Download PDFInfo
- Publication number
- EP2964939B1 EP2964939B1 EP14710708.0A EP14710708A EP2964939B1 EP 2964939 B1 EP2964939 B1 EP 2964939B1 EP 14710708 A EP14710708 A EP 14710708A EP 2964939 B1 EP2964939 B1 EP 2964939B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- piston
- cooling gallery
- crown
- combustion
- stick material
- 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.)
- Active
Links
- 238000000034 method Methods 0.000 title claims description 16
- 239000011248 coating agent Substances 0.000 title description 27
- 238000000576 coating method Methods 0.000 title description 27
- 229910052799 carbon Inorganic materials 0.000 title description 17
- 238000010276 construction Methods 0.000 title description 2
- 238000002485 combustion reaction Methods 0.000 claims description 66
- 239000000463 material Substances 0.000 claims description 66
- 238000001816 cooling Methods 0.000 claims description 62
- 239000000567 combustion gas Substances 0.000 claims description 5
- 229910017052 cobalt Inorganic materials 0.000 claims description 4
- 239000010941 cobalt Substances 0.000 claims description 4
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 4
- 238000005304 joining Methods 0.000 description 17
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 16
- 239000003921 oil Substances 0.000 description 14
- 238000003466 welding Methods 0.000 description 13
- 239000010410 layer Substances 0.000 description 7
- 238000009413 insulation Methods 0.000 description 5
- 230000001965 increasing effect Effects 0.000 description 3
- 238000005496 tempering Methods 0.000 description 3
- 229910000851 Alloy steel Inorganic materials 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005219 brazing Methods 0.000 description 2
- 239000002800 charge carrier Substances 0.000 description 2
- 239000010724 circulating oil Substances 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 230000003292 diminished effect Effects 0.000 description 2
- 238000010894 electron beam technology Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000011247 coating layer Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000004372 laser cladding Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 238000005240 physical vapour deposition Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000010301 surface-oxidation reaction Methods 0.000 description 1
- 238000007751 thermal spraying Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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
-
- 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
- F05C2201/0433—Iron group; Ferrous alloys, e.g. steel
- F05C2201/0463—Cobalt
-
- 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
- This invention relates generally to internal combustion engines, and more particularly to pistons and their method of construction.
- the outer cooling galleries typically circulates about an upper land of the piston including a ring groove region while the inner cooling gallery is typically beneath an upper combustion surface of the piston head, commonly referred to as undercrown, which commonly includes a recessed combustion bowl.
- undercrown which commonly includes a recessed combustion bowl.
- both the ring belt region and the combustion surface benefit from cooling action of the circulated oil.
- the circulated oil begins to degrade and oxidize as a result of contacting the high temperature surfaces, and thus, carbon deposits form on the inner surfaces of the upper land and undercrown. As the carbon build-up continues, an insulation layer is formed on the respective surfaces.
- the cooling effects of the circulated oil are diminished, which in turn leads to surface oxidation and erosion, as well as over tempering of the upper land and combustion surface regions.
- the mechanical properties of the piston material are diminished, which can lead to crack formation, particularly as high stressed regions, such as a combustion bowl rim.
- a piston constructed in accordance with this invention overcomes the aforementioned disadvantages brought on by the formation of carbon build-up by reducing the tendency for oil deposits to accumulate surfaces contacted by cooling oil. As such, a piston constructed in accordance with this invention realizes enhanced running efficiencies, maintains the strength and durability of the base material throughout use and provides an enhanced useful operating life.
- US 2007 / 0113808 A1 and EP 2 096 290 A1 disclose pistons according to the preamble of claim 1.
- a piston for an internal combustion engine includes a piston body having an upper combustion surface configured for direct exposure to combustion gases within a cylinder bore with an undercrown surface located beneath the upper combustion surface.
- the piston body also includes a ring belt region configured for receipt of at least one piston ring adjacent the upper combustion surface with a cooling gallery configured radially inwardly and in substantial radial alignment with the ring belt region.
- the piston further includes a non-stick material bonded to at least one of the undercrown surface and at least a portion of the cooling gallery, wherein the non-stick material inhibits the build-up of carbon deposits thereon.
- the piston body includes an upper crown constructed of a first piece of material and a lower crown constructed from a second piece of material separate from the upper crown.
- the upper crown is fixed to the lower crown and the non-stick material is bonded to at least one of the upper crown and lower crown.
- the non-stick material is bonded to the upper crown and the lower crown is free of the non-stick material.
- both the cooling gallery and the undercrown surface have the non-stick material bonded thereto.
- a method of constructing a piston for an internal combustion engine includes the following: forming a piston body having an upper combustion surface configured for direct exposure to combustion gases within a cylinder bore and an undercrown surface beneath the upper combustion surface; forming a ring belt region configured for receipt of at least one piston ring adjacent the upper combustion surface; forming a cooling gallery radially inwardly and in substantial radial alignment with the ring belt region; and forming at least one of the undercrown surface and at least a portion of the cooling gallery from a non-stick material selected from the group consisting of pure cobalt, WC-17Co, Co-18Cr-30Mo, the non-stick material being resistant to the build-up of carbon deposits thereon.
- the method includes keeping the lower crown free of the non-stick material.
- the method includes bonding the non-stick coating material to the undercrown surface and at least a portion of the cooling gallery.
- Figures 1 and 2 illustrate a piston assembly, referred to hereafter simply as piston 10, constructed according to one presently preferred embodiment of the invention, for reciprocating movement in a cylinder bore or chamber of an internal combustion engine (not shown), such as light vehicle diesel, midrange diesel, heavy duty and large bore diesel engines, and gas engines, for example.
- the piston 10 has a piston body 12, shown as a single, monolithic piece of cast material or formed from either forged or billet materials, by way of example, extending along a central longitudinal axis 14 along which the piston 10 reciprocates in the cylinder bore.
- the body 12 is formed including an upper combustion wall having on one side an upper combustion surface 16 configured for direct exposure to combustion gases within a cylinder bore and on an opposite side an undercrown surface 18 located directly and axially beneath the upper combustion surface 16.
- the piston body 12 is also formed having a ring belt region 20 adjacent the upper combustion surface 16 wherein the ring belt region 20 is configured for receipt of at least one piston ring (not shown).
- the piston body 12 is formed including cooling gallery, shown as a closed or substantially closed cooling gallery 22, by way of example.
- the cooling gallery 22 is configured radially inwardly and in substantial radial alignment with the ring belt region 20.
- the piston 10 further includes a non-stick coating material 24 bonded to at least one of the undercrown surface 18 within a central gallery and at least a portion of the cooling gallery 22, wherein the non-stick coating material 24 resists the build-up of carbon deposits thereon.
- the non-stick coating 24 material can be applied via the following processes: plating, thermal spraying, PVD, laser cladding, by way of example and without limitation. Otherwise, according to an example which does not form part of the invention, if the piston or portions thereof are made of a steel alloy, the non-stick material can be added as a constituent of the composition of the steel alloy ( Figure 6 ).
- the build-up of an insulation layer including carbon deposits from circulating oil, is prevented from forming on the surfaces having the non-stick coating material 24, and thus, the oil circulated through the cooling gallery 22 and against the undercrown surface 18 is able to perform its cooling function, thereby enhancing the performance of the piston 10 and extending its useful life.
- the piston body 12 has an upper crown region 26 and a lower crown region 28.
- the lower crown region 28 provides a pair of pin bosses 30 depending from the upper crown region 26 to provide laterally spaced pin bores 32 coaxially aligned along a pin bore axis 34 that extends generally transverse to the central longitudinal axis 14.
- the pin bosses 30 are joined to laterally spaced skirt portions 36 via strut portions 38.
- the skirt portions 36 are diametrically spaced from one another across opposite sides the pin bore axis 34 and have convex outer surfaces contoured for cooperation within the cylinder bore to maintain the piston 10 in a desired orientation as it reciprocates through the cylinder bore.
- the upper combustion surface 16 is represented as having a recessed combustion bowl 40 to provide a desired gas flow with the cylinder bore. At least in part due to the combustion bowl 40, relatively thin regions of piston body material are formed between the combustion bowl 40, the cooling gallery 22 and the undercrown surface 18. As such, in use, these regions need to be properly cooled, such as via oil flowing through the cooling gallery 22 and against the undercrown surface 18 with a central gallery region between the pin bosses 30.
- the undercrown cooling could be provided by oil splashes, oriented cooling oil jets or via oil within the central gallery region.
- an outer wall 42 of the upper crown region 26 extends downwardly from the upper combustion surface 16.
- the outer wall 42 is formed having at least one, and shown as a plurality of annular ring groove 44 in the ring belt region 20 for receipt of corresponding piston rings (not shown), wherein the rings typically float freely within their respective ring groove 44.
- the annular wall extending between the cooling gallery 22 and the ring belt region 20 is relatively thin, and thus, also needs to be properly cooled during use.
- the non-stick coating material 24 is bonded to at least a portion of surface bounding the cooling gallery 22 and also to the undercrown surface 18.
- the non-stick coating material 24 is selected from the group consisting of: pure cobalt , WC-17Co, and Co-18Cr-30Mo.
- the non-stick coating material 24 is bonded about the entire surface bounding the annular cooling gallery 22, or only along the upper part of the cooling gallery 22, with the coating material 24 extending substantially along the length of the ring belt region 20 and also along an upwardly extending portion of the combustion bowl 40.
- the undercrown surface 18 is shown having a layer of the non-stick coating material 24 bonded thereto and extending completely therealong.
- carbon deposits are prevented from accumulating on the undercrown surface 18, thereby preventing an insulation layer of carbon deposits from forming that would otherwise inhibit the cooling effectiveness of the oil splashing against the undercrown surface 18.
- the material of the piston body 12 in this region is also prevented from becoming weakened via unintended tempering. Accordingly, the material of the upper combustion surface 16 retains its high strength and resistance to crack propagation.
- a piston 110 constructed in accordance with another aspect of the invention is shown in Figure 3 , wherein the same reference numerals, offset by a factor of 100, are used to identify like features discussed above.
- the piston 110 has a piston body 112 including an upper combustion surface 116 represented as having a combustion bowl 140 recessed therein and an undercrown surface 118 beneath the upper combustion surface 116.
- the piston body 112 also includes a ring belt region 120 adjacent the upper combustion surface 116 with a closed or substantially closed cooling gallery 122 configured radially inwardly and in substantial radial alignment with the ring belt region 120.
- a non-stick coating material 124 is shown as being bonded to at least one of the undercrown surface 118 and at least a portion of the cooling gallery 122, wherein the non-stick coating material 124 inhibits the build-up of carbon deposits thereon, as discussed above.
- the piston body 112 has an upper part, referred to as an upper crown region 126 and a lower part, referred to as a lower crown region 128 extending to a pair of pin bosses 130 having laterally spaced pin bores 132.
- the upper and lower crown regions 126, 128 are constructed from separate pieces of material and subsequently fixed to one another, such as via a welding or other joining process.
- a first weld joint 50 unites a portion of the separately made upper and lower crown regions 126, 128 of the piston 110.
- the first weld joint 50 extends through an upstanding wall of a combustion bowl 140 above an annular valley 52 of the combustion bowl 140.
- the first weld joint 50 is open to the combustion bowl 140 above the valley 52.
- a second weld joint 54 extends through an outer wall 142 in a ring belt region 120.
- the upper crown region 126 may thus include a pair of upper joining surfaces, including a radially inner, downwardly facing joining surface 56 and a radially outer, downwardly facing upper joining surface 57 of the ring belt region 120.
- the lower crown region 128 may thus include a pair of lower joining surfaces, including a radially inner, upwardly facing lower surface 58 and a radially outer, upwardly facing lower joining surface 59.
- the associated lower and upper joining surfaces 56, 57; 58, 59 may be united by a selected joining process, such as induction welding, friction welding, resistance welding, charge carrier rays, electron beam welding, laser welding, stir welding, brazing, soldering, hot or cold diffusion, etc.
- the upper crown region 126 provides an upper portion of the cooling gallery 122, having a generally U-shape in cross-section taken along a central longitudinal axis 114 of the piston 110.
- the lower crown region 128 provides a lower portion of the cooling gallery 122, having a generally U-shape in cross-section taken along the central longitudinal axis 114 and also the wall of the upper combustion surface 116 and undercrown surface 118.
- the non-stick coating material 124 can be bonded to the desired surfaces of the separate upper and lower parts 126, 128, including the undercrown surface 118 and/or one or both of the generally U-shaped surfaces bounding the cooling gallery 122, shown in Figure 3 as both generally U-shaped surfaces.
- the non-stick coating material 124 being bonded to both generally U-shaped surfaces, the entire or upper part of the cooling gallery 122 is coated and thus, the entire upstanding surfaces running along both the upper combustion surface and the ring belt region 120 are coated. Accordingly, carbon deposits are prevented from forming an insulation layer in these regions, thus allowing these regions to be properly cooled by circulating oil in the cooling gallery 122.
- a piston 210 constructed in accordance with another aspect of the invention is shown in Figure 4 , wherein the same reference numerals, offset by a factor of 200, are used to identify like features discussed above.
- the piston 210 has a piston body 212 including an upper combustion surface 216 represented as having a combustion bowl 240 recessed therein and an undercrown surface 218 beneath the upper combustion surface 216.
- the piston body 212 also includes a ring belt region 220 adjacent the upper combustion surface 216.
- the piston body 212 is configured similarly as the piston body 112 illustrated in Figure 3 , however, rather than being constructed from separate pieces of material, it is constructed as a single monolithic piece of material.
- the piston body 212 has an "open" cooling gallery 222 configured radially inwardly and in substantial radial alignment with the ring belt region 220.
- an "open means that the cooling gallery 222 is open along its lower portion, and thus, does not include a floor as in the previous embodiments.
- a non-stick coating material 224 is shown as being bonded to at least one of the undercrown surface 218 and the cooling gallery 222, shown as both, wherein the non-stick coating material 224 inhibits the build-up of carbon deposits thereon, as discussed above.
- the non-stick coating material 224 extends along the undercrown surface 218 and the surface bounding the cooling gallery 222 as a continuous, uninterrupted coating layer.
- the coating will be bonded preferentially along a gallery area perpendicular to the spray direction.
- a piston 310 constructed in accordance with another aspect of the invention is shown in Figure 5 , wherein the same reference numerals, offset by a factor of 300, are used to identify like features discussed above.
- the piston 310 has a piston body 312 including an upper combustion surface 316 represented as having a combustion bowl 340 recessed therein and an undercrown surface 318 beneath the upper combustion surface 316.
- the piston body 312 also includes a ring belt region 320 adjacent the upper combustion surface 316 with a closed or substantially closed cooling gallery 322 configured radially inwardly and in substantial radial alignment with the ring belt region 320.
- a non-stick coating material 324 is shown as being bonded to at least one of the undercrown surface 318 and at least a portion of the cooling gallery 322, wherein the non-stick coating material 324 inhibits the build-up of carbon deposits thereon, as discussed above.
- the piston body 312 as discussed for the piston body 112 of Figure 3 , has an upper part, referred to as an upper crown region 326 and a lower part, referred to as a lower crown region 328 extending to a pair of pin bosses 330 having laterally spaced pin bores 332.
- the upper and lower crown regions 326, 328 are constructed from separate pieces of material and subsequently fixed to one another.
- a first weld joint 350 unites a portion of the separately made upper and lower crown regions 326, 328 of the piston 310. However, unlike the piston 110, the first weld joint 350 does not extend through an upstanding wall of a combustion bowl 340 above an annular valley 352 of the combustion bowl 340, but rather, the first weld joint 350 is formed beneath the combustion bowl 340.
- the combustion bowl 340 is formed entirely of the material of the upper crown region 326, including the upstanding wall of the combustion bowl.
- a second weld joint 354 extends through an outer wall 342 in a ring belt region 320.
- the upper crown region 326 may thus include a pair of upper joining surfaces, including a radially inner, downwardly facing joining surface 356 extending below the combustion bowl 340 and a radially outer, downwardly facing upper joining surface 357 within the ring belt region 320.
- the lower crown region 328 may thus include a pair of lower joining surfaces, including a radially inner, upwardly facing lower surface 358 and a radially outer, upwardly facing lower joining surface 359.
- the associated lower and upper joining surfaces 356, 357; 358, 359 may be united by a selected joining process, such as induction welding, friction welding, resistance welding, charge carrier rays, electron beam welding, laser welding, stir welding, brazing, soldering, hot or cold diffusion, etc.
- the upper crown region 326 provides an upper portion of the cooling gallery 322, having a generally U-shape in cross-section taken along a central longitudinal axis 314 of the piston 310.
- the lower crown region 328 provides a lower portion of the cooling gallery 322, having a generally U-shape in cross-section taken along the central longitudinal axis 314. Accordingly, prior to joining the upper crown region 326 to the lower crown region 328, the non-stick coating material 324 can be bonded to the desired surfaces of the separate upper and lower parts 326, 328, including the undercrown surface 318 and/or one or both of the generally U-shaped surfaces bounding the cooling gallery 322, shown in Figure 5 as only the generally U-shaped surface bounding the upper portion of the cooling gallery 322.
- the non-stick coating material 324 can be bonded to the desired surfaces on the upper part 326, while the lower part 328 can remain uncoated.
- the non-stick coating material 324 is applied as needed, without waste, to the areas desired.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/786,156 US9163579B2 (en) | 2011-11-28 | 2013-03-05 | Piston with anti-carbon deposit coating and method of construction thereof |
PCT/US2014/018573 WO2014137690A1 (en) | 2013-03-05 | 2014-02-26 | Piston with anti-carbon deposit coating and method of construction thereof |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2964939A1 EP2964939A1 (en) | 2016-01-13 |
EP2964939B1 true EP2964939B1 (en) | 2021-11-17 |
Family
ID=50288288
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14710708.0A Active EP2964939B1 (en) | 2013-03-05 | 2014-02-26 | Piston with anti-carbon deposit coating and method of construction thereof |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP2964939B1 (ko) |
JP (1) | JP6356704B2 (ko) |
KR (1) | KR20150121239A (ko) |
CN (1) | CN105190000B (ko) |
WO (1) | WO2014137690A1 (ko) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BR112017015377B1 (pt) * | 2015-02-24 | 2022-03-03 | Oerlikon Surface Solutions Ag, Pfäffikon | Processo para aumentar o rendimento e/ou a vida útil de pistões |
US10252293B2 (en) * | 2015-06-12 | 2019-04-09 | Mahle International Gmbh | Method for coating cooling channel with coating containing hexagonal boron nitride |
DE102018100336A1 (de) * | 2018-01-09 | 2019-07-11 | Man Truck & Bus Ag | Kolben für eine Brennkraftmaschine |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20060191508A1 (en) * | 2003-03-31 | 2006-08-31 | Koki Otsuka | Internal engine piston and its production method |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1876917A (en) * | 1929-08-10 | 1932-09-13 | Siemens Ag | Piston for internal combustion engines |
JPS5943470Y2 (ja) * | 1980-02-28 | 1984-12-24 | 三菱電機株式会社 | 内燃機関 |
JP3149066B2 (ja) * | 1991-04-19 | 2001-03-26 | ヤマハ発動機株式会社 | 内燃エンジン用ピストン |
GB2332448B (en) * | 1997-12-20 | 2002-06-26 | Ae Goetze Automotive Ltd | Aluminium alloy |
FR2848129B1 (fr) * | 2002-12-05 | 2006-01-27 | Ascometal Sa | Procede de fabrication d'un piston pour moteur a explosion, et piston ainsi obtenu |
CN1902392A (zh) * | 2004-01-07 | 2007-01-24 | 株式会社小松制作所 | 内燃机用的活塞 |
US7458358B2 (en) * | 2006-05-10 | 2008-12-02 | Federal Mogul World Wide, Inc. | Thermal oxidation protective surface for steel pistons |
EP2096290B1 (en) * | 2008-02-29 | 2014-06-18 | Caterpillar Motoren GmbH & Co. KG | Engine piston with cooling chamber having a non-stick coating |
CN101629295A (zh) * | 2009-08-05 | 2010-01-20 | 中国人民解放军第五七一九工厂 | 一种抗燃油喷嘴积碳的表面处理方法 |
BRPI0905186A2 (pt) * | 2009-12-21 | 2011-08-09 | Mahle Metal Leve Sa | anel de pistão |
JP5603736B2 (ja) * | 2010-10-27 | 2014-10-08 | 菊水化学工業株式会社 | 固体酸化物形燃料電池用単セル |
CN202531299U (zh) * | 2012-03-28 | 2012-11-14 | 江苏兄弟活塞有限公司 | 一种防积碳内燃机铝活塞 |
-
2014
- 2014-02-26 JP JP2015561396A patent/JP6356704B2/ja not_active Expired - Fee Related
- 2014-02-26 WO PCT/US2014/018573 patent/WO2014137690A1/en active Application Filing
- 2014-02-26 EP EP14710708.0A patent/EP2964939B1/en active Active
- 2014-02-26 KR KR1020157027530A patent/KR20150121239A/ko active IP Right Grant
- 2014-02-26 CN CN201480025217.6A patent/CN105190000B/zh not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20060191508A1 (en) * | 2003-03-31 | 2006-08-31 | Koki Otsuka | Internal engine piston and its production method |
Also Published As
Publication number | Publication date |
---|---|
CN105190000A (zh) | 2015-12-23 |
EP2964939A1 (en) | 2016-01-13 |
CN105190000B (zh) | 2018-11-20 |
WO2014137690A1 (en) | 2014-09-12 |
JP6356704B2 (ja) | 2018-07-11 |
JP2016509160A (ja) | 2016-03-24 |
KR20150121239A (ko) | 2015-10-28 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP2786005B1 (en) | Piston with anti-carbon deposit coating and method of construction thereof | |
US9163579B2 (en) | Piston with anti-carbon deposit coating and method of construction thereof | |
EP2462366B1 (en) | Low thermal conductivity piston and method of construction thereof | |
JP6622710B2 (ja) | 付加加工が燃焼ボウル周縁および冷却ギャラリーを製造することを特徴とする1部品ピストン | |
US10273902B2 (en) | Insulation layer on steel pistons without gallery | |
JP2018534479A (ja) | 断熱された鋼ピストンクラウンおよびセラミックコーティングを使用する作製方法 | |
EP3146188B1 (en) | Piston with keystone second ring groove for high temperature internal combustion engines | |
EP2964939B1 (en) | Piston with anti-carbon deposit coating and method of construction thereof | |
EP3420216A1 (en) | Galleryless piston with improved pocket cooling | |
JP2007077988A (ja) | ピストンリング一式 | |
CN108018519A (zh) | 附着到气缸孔的强化层 | |
US10422299B2 (en) | Piston with asymmetric upper combustion surface and method of manufacture thereof | |
US20170254290A1 (en) | Galleryless piston with connection to pockets | |
US20200088127A1 (en) | Piston having an undercrown surface with coating and method of manufacture thereof | |
JP2010019116A (ja) | ピストン用耐摩環 |
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: 20151002 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
AX | Request for extension of the european patent |
Extension state: BA ME |
|
DAX | Request for extension of the european patent (deleted) | ||
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: FEDERAL-MOGUL LLC |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: EXAMINATION IS IN PROGRESS |
|
17Q | First examination report despatched |
Effective date: 20190318 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: EXAMINATION IS IN PROGRESS |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: GRANT OF PATENT IS INTENDED |
|
INTG | Intention to grant announced |
Effective date: 20210615 |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE PATENT HAS BEEN GRANTED |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: TENNECO INC. |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R096 Ref document number: 602014081280 Country of ref document: DE |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: REF Ref document number: 1448236 Country of ref document: AT Kind code of ref document: T Effective date: 20211215 |
|
REG | Reference to a national code |
Ref country code: LT Ref legal event code: MG9D |
|
REG | Reference to a national code |
Ref country code: NL Ref legal event code: MP Effective date: 20211117 |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: MK05 Ref document number: 1448236 Country of ref document: AT Kind code of ref document: T Effective date: 20211117 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: RS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20211117 Ref country code: LT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20211117 Ref country code: FI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20211117 Ref country code: BG Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220217 Ref country code: AT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20211117 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220317 Ref country code: SE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20211117 Ref country code: PT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220317 Ref country code: PL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20211117 Ref country code: NO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220217 Ref country code: NL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20211117 Ref country code: LV Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20211117 Ref country code: HR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20211117 Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20220218 Ref country code: ES Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20211117 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SM Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20211117 Ref country code: SK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20211117 Ref country code: RO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20211117 Ref country code: EE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20211117 Ref country code: DK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20211117 Ref country code: CZ Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20211117 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R097 Ref document number: 602014081280 Country of ref document: DE |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MC Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20211117 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
REG | Reference to a national code |
Ref country code: BE Ref legal event code: MM Effective date: 20220228 |
|
26N | No opposition filed |
Effective date: 20220818 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20220226 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20220226 Ref country code: AL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20211117 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20211117 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20220228 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20220228 Ref country code: IE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20220226 Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20220226 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20220228 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20220228 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20211117 |
|
P01 | Opt-out of the competence of the unified patent court (upc) registered |
Effective date: 20230528 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: HU Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO Effective date: 20140226 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20211117 Ref country code: CY Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20211117 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20240123 Year of fee payment: 11 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R081 Ref document number: 602014081280 Country of ref document: DE Owner name: TENNECO INC. (N. D. GES. D. STAATES DELAWARE),, US Free format text: FORMER OWNER: TENNECO INC, LAKE FOREST, IL, US |