EP2096290A1 - Kolben für Brennkraftmaschinen mit einem Kühlraum mit Antihaftbeschichtung - Google Patents

Kolben für Brennkraftmaschinen mit einem Kühlraum mit Antihaftbeschichtung Download PDF

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Publication number
EP2096290A1
EP2096290A1 EP08003822A EP08003822A EP2096290A1 EP 2096290 A1 EP2096290 A1 EP 2096290A1 EP 08003822 A EP08003822 A EP 08003822A EP 08003822 A EP08003822 A EP 08003822A EP 2096290 A1 EP2096290 A1 EP 2096290A1
Authority
EP
European Patent Office
Prior art keywords
piston
cooling chamber
coating
piston part
stick coating
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
Application number
EP08003822A
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English (en)
French (fr)
Other versions
EP2096290B1 (de
Inventor
Heiko Sattler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Caterpillar Motoren GmbH and Co KG
Original Assignee
Caterpillar Motoren GmbH and Co KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Caterpillar Motoren GmbH and Co KG filed Critical Caterpillar Motoren GmbH and Co KG
Priority to EP08003822.7A priority Critical patent/EP2096290B1/de
Publication of EP2096290A1 publication Critical patent/EP2096290A1/de
Application granted granted Critical
Publication of EP2096290B1 publication Critical patent/EP2096290B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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 
    • F02F3/10—Pistons  having surface coverings
    • F02F3/12—Pistons  having surface coverings on piston heads
    • F02F3/14—Pistons  having surface coverings on piston heads within combustion chambers
    • 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 present disclosure refers in general to a piston configured to be used in an internal combustion engine. More specifically, but not exclusively the disclosure relates to pistons having at least one cooling surface within a cooling chamber.
  • pistons utilized in internal combustion engines e.g. engines for large ships or vessels such as container ships or a tankers, often contain a cooling gallery or cooling chamber which may be designed to generate a "shaker cooling effect".
  • the thickness of the wall separating the cooling chamber from the upper face of the piston bowl is minimized in order to maximize the cooling effect.
  • the known pistons may suffer in that the cooling effect may deteriorate over long use of the engine.
  • the cooling effect may exceptionally deteriorate over time when the internal combustion engine, such as a large diesel engine or heavy fuel oil engine, is configured to bum diesel or heavy fuel oil (HFO) or the like.
  • the lube oil used for lubrication and cooling purposes becomes contaminated by heavy fuel oil to be burned in the engine.
  • contamination of the lube oil may be the reason for any detrimental deposits at an inner surface or cooling surface of the cooling chamber. These deposits may detrimentally influence the cooling effect within the piston.
  • the present disclosure is directed to overcoming this or other problems of the known pistons.
  • a piston is disclosed that is designed for use in an internal combustion engine.
  • the piston may include at least one cooling chamber.
  • the cooling chamber preferably has at least one inner surface that is provided with a non-stick coating.
  • the non-stick coating is preferably formulated so as to minimize or reduce the accumulation or deposit of contaminants on the inner surface during extended use of the piston in an internal combustion engine environment.
  • a method for manufacturing a piston for an internal combustion engine includes or defines at least one cooling chamber.
  • the present method preferably includes the step of coating at least a portion of an inner surface of the cooling chamber with a non-stick material.
  • Fig. 1 is a longitudinal cross sectional view of an exemplary embodiment of a piston configured to be used in an internal combustion engine, for example a large diesel or heavy fuel oil engine, and
  • Fig. 2 is a longitudinal cross sectional view of another exemplary embodiment of a piston according to the present disclosure, wherein only the upper part of the piston is shown for the purpose of clarity.
  • FIG. 1 A first exemplary embodiment of a piston 5 according to the present disclosure is shown in a longitudinal cross sectional view in Fig. 1 .
  • This piston 5 may have a composite structure comprising an upper piston part 10 and a lower piston part 20.
  • the upper piston part 10 has a lower end face 15 and an upper face 16.
  • the upper face 16 may define a lower border of combustion chamber in which the piston 5 is fitted.
  • the lower piston part 20 has an upper end face 25 which may be configured to be connected to the piston lower face 15 of the upper piston part 10.
  • the exemplary lower piston part 20 of Fig. 1 may have a basic structure that is generally known in the prior art. Accordingly, the lower piston part 20 may include a central bore 70 defined to connect space 75 with a cavity 80. The cavity 80 is disposed below the upper face 16 of the piston 5. Lateral bores or holes 60 may extend from the cavity 80 into a cooling chamber 30.
  • the cooling chamber 30 may be formed as a "cooling gallery" or a cooling channel within the piston 5.
  • the cooling chamber is preferably ring-shaped or annular-shaped and may be arranged coaxially to a central line or longitudinal axis 6 of the piston 5.
  • the cooling chamber 30 is formed as a cooling gallery, although, e.g., cooling channels may also be contemplated by the present teachings.
  • the cooling chamber 30 may include one or more hollow spaces separated from each other.
  • Axially-aligned pin bores 90 may be formed in a lower portion of the lower piston part 20. The pin bores 90 may receive a wrist pin (not shown) which serves to interconnect the piston 5 with a connection rod (not shown).
  • the upper piston part 10 may be joined with the lower piston part 20 along the upper and lower end faces 15 and 25, respectively, by, e.g., bolting, welding, in particular friction welding, or soldering.
  • the piston 5 may be of the type "assembled piston” or "multi-part piston", and the upper piston part 10 and the lower piston part 20 are connected by bolts such that replacement of, e.g., the upper piston part 10 after a defined period of time can be carried out without problems.
  • the upper end face 25 of the lower piston part 20 and the lower end face 15 of the upper piston part 10 may have a stepped contour in the cross-sectional view shown in Fig. 1 , although other contours of the end faces 15, 25 are also possible within the scope of the present teachings.
  • the cooling chamber 30 may be formed by the upper piston part 10 and the lower piston part 20.
  • the inner surface 35 of the cooling chamber 30 may be partially formed by each of the upper piston part 10 and the lower piston part 20.
  • a layer 50 of non-stick material may be applied to an upper portion of the inner surface 35.
  • the layer 50 of non-stick material may preferably cover the portion of the inner surface 30 that is defined by a relatively thin wall of the piston bowl of the piston 5.
  • the non-stick material preferably has an anti-adhesive property, which inhibits or repels or at least minimizes accumulation of unburned carbon residues.
  • the non-stick coating may be formed from any material which may reduces any detrimental deposits at some portions of the inner surface 35.
  • the critical portions of the inner surface 35 with regard to heat transfer may be these portions which heat up beyond a threshold temperature at which coke layers may be formed.
  • the nano-coating layer 50 is preferably formed relatively thin, so that the heat transfer or heat transmission from the piston 5 to the coolant, e.g., oil, is not or only marginal effected.
  • the thickness of the non-stick coating 50 may be within a range of about 2 ⁇ m to 20 ⁇ m, in particular about 4 ⁇ m to 6 ⁇ m, more particular about 5 ⁇ m.
  • the thickness of the non-stick coating 50 may be also be about 8 ⁇ m to 12 ⁇ m, in particular about 10 ⁇ m.
  • the thickness of the non-stick coating 50 may be also be about 13 ⁇ m to 17 ⁇ m, in particular about 15 ⁇ m.
  • the non-stick material may be a nano-coating material such as, e.g., a sol-gel-material ("sol-gel-systems").
  • the nano-coating layer 50 is preferably formed relatively thin, so that the heat transfer or heat transmission from the piston 5 to the coolant is not or only marginal effected. If a nano-coating material is used to form the non-stick coating 50, the thickness of the non-stick coating 50 may be further reduced compared to other non-stick coatings.
  • a nano-coating may be applied on a metal surface.
  • nano-coating includes, e.g., a nano-coating deposited by laser and plasma assisted physical vapour deposition (PVD), a nano-coating made of a sprayed nano material, e.g. a thermally sprayed nano-material, a dip-coated nano-material, a nano-coating gel deposited by a sol-gel process, and other deposition techniques kwon in the art.
  • PVD physical vapour deposition
  • a sol-gel process is employed.
  • the sol-gel process is a wet-chemical technique that starts with a chemical solution that reacts to produce colloidal particles ("sol").
  • the sol then evolves toward the formation of an inorganic network containing a liquid phase ("gel").
  • the gel is dried to remove the liquid phase from the gel, thus forming a porous material.
  • the porous material is then subjected to a thermal treatment in order to promote a polycondensation and improve the porous material's mechanical properties.
  • the chemical solution for producing the sol may include alkoxides or modified alkoxides of silicon, titanium, aluminum and zirconium, like for example Si(OR) 4 , Ti(OR) 4 , (R1) 2 -Zr(OR) 2 and R1-Al(OR) 2 .
  • R1 is for example an alkyl or aryl moiety in the case of modified alkoxides
  • OR are hydrolysable moieties, which are cleaved off as an alcohol after adding water and a catalyst to the chemical solution, such that a sol is formed.
  • fluorine-containing silanes like for example F 3 C-(CF 2 ) 5 -(CH 2 ) 2 -Si(OC 2 H 5 ) 3 , are added as additives to the chemical solution for producing the sol.
  • the obtained sol is a liquid having a low viscosity and is deposited on the surface to be coated, e.g. by spraying or dip-coating. After the sol has been deposited on the surface, the sol is subjected to a condensation reaction to form polysiloxanes in the form of a gel by heating the deposited sol.
  • Suitable layers of nano-coating are, e.g., H 5057, H 5083 and H 5085, obtainable from FEW Chemicals GmbH, Wolfen, Germany.
  • the material H 5057 may be a composition of substantially TEOS/methyl/glymo-fluorosilane.
  • the material H 5083 may be a composition of substantially A-1589/Y-9805/fluorosilane and a silicone-additive.
  • the material H 5085 may be a composition of substantially A-1589/Y-9805/dimethyl-fluorosilane.
  • FIG. 2 A further exemplary embodiment of a piston 5 according to the present disclosure is shown in Fig. 2 .
  • the structure of this piston 5 is identical to the piston 5 shown in Fig. 1 , with the exception that a layer of nano-coating material is not formed on the upper surface of the inner surface 85 of the cavity 80 but at an outer part of the upper inner surface 35.
  • a layer of nano-coating material is not formed on the upper surface of the inner surface 85 of the cavity 80 but at an outer part of the upper inner surface 35.
  • the same advantages may generally be achieved with the embodiment shown in Fig. 2 as with the piston 5 according to the embodiment shown in Fig. 1 .
  • the upper piston part 10 and the lower piston part 20 may be manufactured or casted according to commonly known techniques.
  • the upper piston part 10 is, e.g., detachably or non-detachably connected with the lower piston part 20, e.g., by bolting, welding, in particular electron beam welding, or soldering, to form a piston with a cooling chamber 30 as shown in Figs. 1 and 2
  • the upper part of the inner surface 35 of the upper piston part 10 may be preferably covered with the non-stick coating 50, e.g. a nano-coating material.
  • the area to be covered with the non-stick coating 50 may be identical to the area shown in Figs. 1 and 2 .
  • other or additional parts of the inner surface 35 of the cooling chamber 30 may be covered with the non-stick coating 50.
  • the upper piston part 10 and the lower piston part 20 may be, e.g., detachably or non-detachably, connected with each other. While there are a number of ways to join such separate components, all of which are contemplated by the present disclosure, a preferred approach is to bolt the separately formed components with each other, or to join the components along a friction weld joint or an electron beam joint. In this exemplary embodiment, the friction weld joint or the electron beam joint is identical with the contacting area of the upper end surface 25 and the lower end surface 15.
  • contemplated joining techniques include, but are not limited to, welding, bonding, brazing screw-thread joining and other mechanical and metallurgical means of uniting the separate components together to yield the closed chamber structure of the piston 5, in particular bolting together the two parts 10, 20 of the piston 5.
  • At least the lower piston part 20 may be cast from, e.g., steel, iron or aluminum
  • the upper piston part 10 may likewise be cast from steel, iron or aluminum or formed by other techniques, such as forging or other casting techniques.
  • a piston 5 according to Figs. 1 and 2 utilized in a diesel engine or heavy fuel oil engine (not shown) will reciprocate in the direction of the central line 6.
  • a coolant such as oil
  • the cooling oil may then flow through the bores 60 into the cooling chamber 30. Due to the fact that the cooling chamber 30 is partially filled with the coolant during engine operation, which coolant splashes against the inner surface 35 of the cooling chamber 30, the coolant cools the inner surface 35 and absorbs heat from the upper piston part 10. Consequently, due to the heat transfer from the upper piston part 10 to the coolant, the maximum temperature of the upper piston part 10 during engine operation can be reduced.
  • the non-stick coating 50 By applying the non-stick coating 50 to a portion of the inner surface 35 of the cooling chamber 30, it may be possible to inhibit, reduce, minimize or even prevent accumulation of detrimental particles such as unburned carbon residues or coke layers thereon. As a result, it is possible to prevent the maximum temperature of the upper piston part 10 from being exceeded during engine operation.
  • further bores (not shown) may be provided to permit the coolant to flow out from the cooling chamber 30 and be replaced with lower-temperature coolant flowing through the bores 60.
  • a "shaker effect" within the cooling chamber 30 may achieved with its associated cooling effect as described above.
  • a piston 5 according to the present disclosure may also be referred to as a crown-cooling chamber piston having a cooling chamber which may be curved or ring-shaped, a multi-part or composite piston with a cooling chamber 30. All of these types of pistons 5 preferably include a non-stick coating 50, e.g., of nano-coating material as mentioned above disposed on at least a part of the inner surface of one or more of the cooling chambers.
  • a non-stick coating 50 e.g., of nano-coating material as mentioned above disposed on at least a part of the inner surface of one or more of the cooling chambers.
  • a piston 5 according to the present disclosure may reduce or prevents deterioration of the cooling effect over the course of engine operation, in particular when the internal combustion engine is configured to bum heavy fuel oils or the like.
  • the lube oil used for lubrication purposes becomes contaminated by heavy fuel oil during operation of the engine. Due to this contamination deposition of a coke layer on at least a part of the inner surface of the cooling chamber may develop.
  • a non-stick coating 50 e.g., of nano-coating material on at least a part of the inner surface 35 of the cooling chamber 30, a gradual build up or deposit of contaminants on the cooling surface may be inhibited, reduced, minimized or even avoided.
  • a very thin layer of ,e.g., nano-coating, preferably based on "sol-gel materials" is applied to at least a part of the cooling surface so that the build up or deposit of contaminants may be reduced and, consequently, the heat transfer will scarcely be affected due to the absence of accumulated contaminants.
  • the non-stick 50 may be applied to the inner surface 35 through at least one bore 60 or hole that opens up into the cooling chamber 30.
  • This bore 60 or hole may be integrally provided in pistons 5 in a known manner.
  • Such an integral bore 60 or hole often serves as a conduit through which coolant flows into the cooling chamber during operation of the piston 5.
  • the upper piston part 10 is non-detachably connected to the lower piston part 20 in order to form the cooling chamber 30
  • at least a part of the inner surface 35 of the cooling chamber 30 may be coated with the non-stick coating 50 before the upper piston part 10 and the lower piston part 20 are connected.

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  • 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)
EP08003822.7A 2008-02-29 2008-02-29 Kolben für Brennkraftmaschinen mit einem Kühlraum mit Antihaftbeschichtung Not-in-force EP2096290B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP08003822.7A EP2096290B1 (de) 2008-02-29 2008-02-29 Kolben für Brennkraftmaschinen mit einem Kühlraum mit Antihaftbeschichtung

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Application Number Priority Date Filing Date Title
EP08003822.7A EP2096290B1 (de) 2008-02-29 2008-02-29 Kolben für Brennkraftmaschinen mit einem Kühlraum mit Antihaftbeschichtung

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EP2096290A1 true EP2096290A1 (de) 2009-09-02
EP2096290B1 EP2096290B1 (de) 2014-06-18

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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013057080A1 (de) * 2011-10-21 2013-04-25 Mahle International Gmbh Kolben
WO2013081774A1 (en) * 2011-11-28 2013-06-06 Federal-Mogul Corporation Piston with anti-carbon deposit coating and method of construction thereof
DE102012216925A1 (de) * 2012-09-20 2014-03-20 Mahle International Gmbh Verfahren zum Herstellen eines mit Öl gekühlten Maschinenteils
WO2014137690A1 (en) * 2013-03-05 2014-09-12 Federal-Mogul Corporation Piston with anti-carbon deposit coating and method of construction thereof
US8973484B2 (en) 2011-07-01 2015-03-10 Mahle Industries Inc. Piston with cooling gallery
US9163579B2 (en) 2011-11-28 2015-10-20 Federal-Mogul Corporation Piston with anti-carbon deposit coating and method of construction thereof
WO2016198618A1 (de) 2015-06-12 2016-12-15 Mahle International Gmbh Verfahren zur beschichtung der oberfläche eines geschlossenen kühlkanals eines kolbens für einen verbrennungsmotor sowie mittels dieses verfahrens herstellbarer kolben
US10519854B2 (en) 2015-11-20 2019-12-31 Tenneco Inc. Thermally insulated engine components and method of making using a ceramic coating
US10578050B2 (en) 2015-11-20 2020-03-03 Tenneco Inc. Thermally insulated steel piston crown and method of making using a ceramic coating
DE102019207482A1 (de) * 2019-05-22 2020-03-26 Audi Ag Kolben für eine Brennkraftmaschine, Verfahren zum Herstellen eines Kolbens sowie Brennkraftmaschine mit wenigstens einem Kolben
WO2020081968A1 (en) * 2018-10-18 2020-04-23 Tenneco, Inc. Piston having an undercrown surface with coating and method of manufacture thereof
US11168643B2 (en) 2018-02-21 2021-11-09 Tenneco Inc. Coating to reduce coking deposits on steel pistons
DE102012216929B4 (de) 2012-09-20 2022-05-25 Mahle International Gmbh Motorkomponente einer Brennkraftmaschine

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT517589B1 (de) 2015-07-03 2017-03-15 Ge Jenbacher Gmbh & Co Og Kolben für eine Brennkraftmaschine
US9926829B2 (en) 2015-10-20 2018-03-27 General Electric Company Laminar flow of piston cooling jets

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JPS57179354A (en) * 1981-04-28 1982-11-04 Mitsubishi Heavy Ind Ltd Piston for use in reciprocating engine
US6513477B1 (en) 2001-09-19 2003-02-04 Federal-Mogul World Wide, Inc. Closed gallery piston having pin bore lubrication
US20070113802A1 (en) * 2004-01-07 2007-05-24 Kenji Mihara Piston for internal combustion engine

Family Cites Families (1)

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Publication number Priority date Publication date Assignee Title
DK200100148A (da) * 2001-01-29 2002-01-07 Man B & W Diesel As Oliekølet stempel til en forbrændingsmotor og fremgangsmåde til fremstilling af et sådant stempel

Patent Citations (3)

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Publication number Priority date Publication date Assignee Title
JPS57179354A (en) * 1981-04-28 1982-11-04 Mitsubishi Heavy Ind Ltd Piston for use in reciprocating engine
US6513477B1 (en) 2001-09-19 2003-02-04 Federal-Mogul World Wide, Inc. Closed gallery piston having pin bore lubrication
US20070113802A1 (en) * 2004-01-07 2007-05-24 Kenji Mihara Piston for internal combustion engine

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8973484B2 (en) 2011-07-01 2015-03-10 Mahle Industries Inc. Piston with cooling gallery
CN103890363B (zh) * 2011-10-21 2017-07-07 马勒国际有限公司 活塞
US9790889B2 (en) 2011-10-21 2017-10-17 Mahle International Gmbh Piston
WO2013057080A1 (de) * 2011-10-21 2013-04-25 Mahle International Gmbh Kolben
CN103890363A (zh) * 2011-10-21 2014-06-25 马勒国际有限公司 活塞
JP2014530981A (ja) * 2011-10-21 2014-11-20 マーレ インターナショナルゲゼルシャフト ミット ベシュレンクテルハフツングＭＡＨＬＥ Ｉｎｔｅｒｎａｔｉｏｎａｌ ＧｍｂＨ ピストン
CN104081030A (zh) * 2011-11-28 2014-10-01 费德罗-莫格尔公司 具有防积碳的涂层的活塞及其制造方法
KR20140098826A (ko) * 2011-11-28 2014-08-08 페더럴-모걸 코오포레이숀 탄소 퇴적 방지 코팅물질을 가진 피스톤 및 그 구성 방법
US9163579B2 (en) 2011-11-28 2015-10-20 Federal-Mogul Corporation Piston with anti-carbon deposit coating and method of construction thereof
US9169800B2 (en) 2011-11-28 2015-10-27 Federal-Mogul Corporation Piston with anti-carbon deposit coating and method of construction thereof
KR101981565B1 (ko) 2011-11-28 2019-06-04 테네코 인코퍼레이티드 탄소 퇴적 방지 코팅물질을 가진 피스톤 및 그 구성 방법
WO2013081774A1 (en) * 2011-11-28 2013-06-06 Federal-Mogul Corporation Piston with anti-carbon deposit coating and method of construction thereof
CN104081030B (zh) * 2011-11-28 2017-03-01 费德罗-莫格尔公司 具有防积碳的涂层的活塞及其制造方法
DE102012216929B4 (de) 2012-09-20 2022-05-25 Mahle International Gmbh Motorkomponente einer Brennkraftmaschine
DE102012216925A1 (de) * 2012-09-20 2014-03-20 Mahle International Gmbh Verfahren zum Herstellen eines mit Öl gekühlten Maschinenteils
JP2016509160A (ja) * 2013-03-05 2016-03-24 フェデラル−モーグル コーポレイション デポジット防止コーティングを伴うピストンおよびその構築方法
CN105190000B (zh) * 2013-03-05 2018-11-20 费德罗-莫格尔公司 带有抗积碳涂料的活塞及其制造方法
CN105190000A (zh) * 2013-03-05 2015-12-23 费德罗-莫格尔公司 带有抗积碳涂料的活塞及其制造方法
WO2014137690A1 (en) * 2013-03-05 2014-09-12 Federal-Mogul Corporation Piston with anti-carbon deposit coating and method of construction thereof
WO2016198618A1 (de) 2015-06-12 2016-12-15 Mahle International Gmbh Verfahren zur beschichtung der oberfläche eines geschlossenen kühlkanals eines kolbens für einen verbrennungsmotor sowie mittels dieses verfahrens herstellbarer kolben
US10252293B2 (en) 2015-06-12 2019-04-09 Mahle International Gmbh Method for coating cooling channel with coating containing hexagonal boron nitride
US10519854B2 (en) 2015-11-20 2019-12-31 Tenneco Inc. Thermally insulated engine components and method of making using a ceramic coating
US10578050B2 (en) 2015-11-20 2020-03-03 Tenneco Inc. Thermally insulated steel piston crown and method of making using a ceramic coating
US11168643B2 (en) 2018-02-21 2021-11-09 Tenneco Inc. Coating to reduce coking deposits on steel pistons
WO2020081968A1 (en) * 2018-10-18 2020-04-23 Tenneco, Inc. Piston having an undercrown surface with coating and method of manufacture thereof
US10731598B2 (en) 2018-10-18 2020-08-04 Tenneco Inc. Piston having an undercrown surface with coating and method of manufacture thereof
DE102019207482A1 (de) * 2019-05-22 2020-03-26 Audi Ag Kolben für eine Brennkraftmaschine, Verfahren zum Herstellen eines Kolbens sowie Brennkraftmaschine mit wenigstens einem Kolben

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