EP1387082A2 - Composant d'un moteur à combustion interne avec un élément soumis tribologiquement - Google Patents

Composant d'un moteur à combustion interne avec un élément soumis tribologiquement Download PDF

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Publication number
EP1387082A2
EP1387082A2 EP03007079A EP03007079A EP1387082A2 EP 1387082 A2 EP1387082 A2 EP 1387082A2 EP 03007079 A EP03007079 A EP 03007079A EP 03007079 A EP03007079 A EP 03007079A EP 1387082 A2 EP1387082 A2 EP 1387082A2
Authority
EP
European Patent Office
Prior art keywords
component
internal combustion
combustion engine
hard material
counter body
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP03007079A
Other languages
German (de)
English (en)
Other versions
EP1387082A3 (fr
Inventor
Guenter Schneider
Thomas Beck
Alexander Schattke
Sascha Henke
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1387082A2 publication Critical patent/EP1387082A2/fr
Publication of EP1387082A3 publication Critical patent/EP1387082A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/166—Selection of particular materials
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/02—Fuel-injection apparatus having means for reducing wear
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/90—Selection of particular materials
    • F02M2200/9038—Coatings

Definitions

  • the invention relates to a component of an internal combustion engine, in particular an injection system or an injection valve, with a tribologically stressed component, the Use and a gas engine with this component according to the preamble of the main claim.
  • Valves based on petrol injectors are sometimes used in gas engines. Because the natural gas that has been used up to now is usually oil-sealed Compressors contain a small amount of oil, the valves used have a sufficiently long service life, since even the smallest amounts of oil for a reliable Operation sufficient.
  • Hard material layers as wear protection coatings for cutting and pressing tools lead to a significant increase in tool life.
  • Known hard material layers are chromium nitride, titanium nitride, zirconium nitride, vanadium nitride, niobium nitride, titanium aluminum nitride, Chrome-aluminum-nitride or zirconium-aluminum-nitride layers and their combination as multilayers, for example in the form of titanium-aluminum nitride / chromium nitride or titanium nitride / vanadium nitride or titanium nitride / niobium nitride.
  • such hard material coatings have a high Have temperature resistance so that they can be used to coat drills and cutting tools, at which temperatures of up to 600 ° C occur to increase their lifespan.
  • the object of the invention was to provide a component of an internal combustion engine, in particular an injection system or an injection valve with a tribologically stressed Component that is provided with a coating such that this component can also be used in an internal combustion engine with a dry, in particular oil-free gas is operated as fuel.
  • the component of an internal combustion engine according to the invention has compared to the state of the Technology has the advantage that it is in a dry and / or oil-free environment a carbon-containing coating or a component without a coating has a significantly higher resistance to wear.
  • a component according to the invention was made in the form of a coated test specimen Steel (100Cr6 steel) loaded with an oscillating ball, being the measure of durability the coating is the time until it fails.
  • nitridic inorganic hard material coatings showed in this context properties significantly better than those of conventional carbon-containing layers.
  • a lubricating film is normally used in lubricated contacts separates the two friction partners, while under mixed friction conditions, i.e. for example in the area of the reversal points of an oscillating movement, or under extreme Operating parameters, such as an injection valve, to a lubricant film tear and thus a direct solid-state contact of the two rubbing against each other Surfaces is coming.
  • mixed friction conditions i.e. for example in the area of the reversal points of an oscillating movement, or under extreme Operating parameters, such as an injection valve, to a lubricant film tear and thus a direct solid-state contact of the two rubbing against each other Surfaces is coming.
  • Especially under dry, especially oil-free operating conditions or applications is not a separating medium between the two rubbing each other Surfaces available, so that there is solid-state contact of the rubbing against each other Forms surfaces that exist over the entire operating life of the component. Therefore, this is to be interpreted in such a way that this "operating state" does not lead to
  • the inorganic hard material coatings of the invention tribologically stressed component achieves the function of the dry, oil-free conditions at least partially existing lubricating film can take over.
  • the inorganic hard material coating thus initially avoids that direct contact between two steel surfaces or metal surfaces and / or reduced their tendency to adhere. It further reduces the coefficient of friction between the two surfaces and causes a kind of solid lubrication. Eventually due to the inorganic hard material coating also the chemical reactivity of each other rubbing surfaces, i.e. the surfaces of the counter body and the component, reduced.
  • the inorganic hard material coating provided according to the invention thus brings about on the surface area of the tribologically stressed component, that this is wear-resistant even under non-lubricated, absolutely dry conditions is working.
  • both the counter body and the component in the surface area in which both are in frictional contact during operation of the component stand with each other, with an at least largely inorganic hard material coating is provided, which preferably has the same structure and / or the same composition exhibit.
  • the applied hard material coating on the Component and / or has several partial layers on the counter body as in State of the art also common in the coating of cutting or pressing tools is.
  • the counter body is particularly suitable for a PVD process or a PECVD process, such as it is widely known from the prior art.
  • the inorganic hard material coating of the component and / or the counter body is a nanostructured layer, in particular one Layer with nanocrystalline titanium nitride, which is in a matrix of amorphous silicon nitride is embedded.
  • the component of the internal combustion engine is particularly suitable for use in an injection valve or an injection system that uses alternative gaseous and dry Fuel such as natural gas or hydrogen is applied.
  • the component is preferred or the counter body is an inlet valve, a sealing seat, a guide area Injection needle or a seat area of an injection needle of an injection system or Injector.
  • FIG. 1 shows a section through a schematic diagram of a front part of a Injection needle in the area of a nozzle opening.
  • the invention is explained using the example of an injection nozzle, in which there is a relative thereto moving injection needle is located.
  • FIG. 1 shows a front part as a tribologically stressed component 10 this injection needle, which in a counter body 11, i.e. in the example explained one Seat for the injection needle, is moved.
  • This occurs under dry, oil-free combustion conditions in an internal combustion engine with an injection system or Injector is provided with the components according to Figure 1, a non-lubricated Solid-state contact in a surface area 12 of the component 10 with respect to one Surface area 13 of the counter body 11.
  • the component according to FIG. 1 is special Part of a gas engine such as a natural gas engine or a hydrogen engine, and there in turn part of an injection system or injection valve of this engine.
  • Figure 1 further shows how in the surface area 12 of the tribologically stressed Component 10 an at least largely inorganic hard material coating 14 is applied.
  • the surface area 13 of the counter body 11 and the Surface area 12 of the component 10 in rubbing contact with one another, wherein a there is no lubricated solid-state contact.
  • the thickness of the inorganic hard material coatings 14, 15 of the component 10 or of the counter body 11 is preferably in each case between 0.5 ⁇ m to 5 ⁇ m, in particular 1 ⁇ m to 3 ⁇ m.
  • the inorganic hard material coatings 14, 15 according to FIG. 1 are each via a PVD process ("physical vapor deposition") or a PECVD process ("physically enhanced chemical vapor deposition") deposited hard material coatings, which is a carbonitridic, nitridic, oxinitridic or oxidic Have layer or several such sub-layers or consist thereof.
  • PVD physical vapor deposition
  • PECVD physically enhanced chemical vapor deposition
  • the hard material coating 14 of the component 10 and the hard material coating are preferred 15 of the counter body 11 a layer selected from the group CrN, TiN, ZrN, VN, NbN, TiAlN, CrAlN or ZrAlN or a combination of such layers a multiple or multiple layer, in particular the shape or with the layer sequence TiN / VN or TiN / NbN.
  • the hard material coating 14, 15 of the component 10 and / or the counter body 11 or a partial layer of the hard material coating 14, 15 also a nanostructured one Layer, in particular a layer with nanocrystalline titanium nitride embedded in an amorphous silicon nitride matrix
  • wear protection optimized for the respective application can be achieved also a combination layer or an alloy layer with different of the layer systems or nanostructured layers explained be, these layers or sub-layers in their material composition and their properties as required, homogeneous, non-homogeneous, graded or structured are built up.
  • the guide area of an injection needle is included the inorganic hard material coating 14, 15 provided.
  • the Seat area of an injection needle for example to prevent an injection quantity hits, be coated accordingly.
  • a steel test specimen (10Cr6) was provided with a coating and then loaded with an oscillating ball.
  • the load (normal force) was 10 Newtons, the vibration range 200 ⁇ m, the vibration frequency 40 Hz, the ambient temperature 50 ° C, the test time 1 hour and the thickness of the applied on the test specimen Coating 2 ⁇ m. Dry nitrogen was used as the ambient medium a residual moisture of less than 1% is used.
  • a coating of diamond-like carbon (DLC layer) showed among them Conditions already fail after about 10 minutes.
  • An inorganic hard material coating made of titanium nitride showed one in this test Layer wear of only 0.2 ⁇ m.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Physical Vapour Deposition (AREA)
EP03007079A 2002-07-30 2003-03-28 Composant d'un moteur à combustion interne avec un élément soumis tribologiquement Withdrawn EP1387082A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10234588A DE10234588A1 (de) 2002-07-30 2002-07-30 Bauteil eines Verbrennungsmotors mit einem tribologisch beanspruchten Bauelement
DE10234588 2002-07-30

Publications (2)

Publication Number Publication Date
EP1387082A2 true EP1387082A2 (fr) 2004-02-04
EP1387082A3 EP1387082A3 (fr) 2005-09-21

Family

ID=30010505

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03007079A Withdrawn EP1387082A3 (fr) 2002-07-30 2003-03-28 Composant d'un moteur à combustion interne avec un élément soumis tribologiquement

Country Status (3)

Country Link
US (1) US20040187798A1 (fr)
EP (1) EP1387082A3 (fr)
DE (1) DE10234588A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009038637A1 (fr) * 2007-09-20 2009-03-26 Caterpillar Inc. Soupape revêtue d'un film mince
DE102008025175A1 (de) * 2008-05-26 2009-12-03 BAM Bundesanstalt für Materialforschung und -prüfung Verfahren zur Abscheidung einer überrollbeständigen Dünnschicht auf ein hochbeanspruchtes, flüssig-geschmiertes Substrat in geschlossenen Tribosystemen, beschichtetes Substrat sowie geschlossenes, flüssiggeschmiertes Tribosystem
WO2010116221A1 (fr) * 2009-03-24 2010-10-14 Robert Bosch Gmbh Dispositif d'injection de carburant dans la chambre de combustion d'une machine à combustion interne
WO2015155275A1 (fr) * 2014-04-09 2015-10-15 Oerlikon Surface Solutions Ag, Trübbach Système tribologique avec usure réduite de corps antagoniste
CN110373519A (zh) * 2019-07-12 2019-10-25 重庆文理学院 一种高硬度耐磨损的不锈钢的制备方法

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005038385A1 (de) * 2005-08-08 2007-02-22 Siemens Ag Kraftstoffeinspritzdüse und Verfahren zum Erhöhen der Resistenz einer derartigen Düse gegen eine betriebsbedingte Verschlechterung der Einspritzeigenschaften
CN100482855C (zh) * 2006-03-08 2009-04-29 中国科学院金属研究所 一种在宽温度范围内抗高温腐蚀的CrN/CrAlN防护涂层及制备方法
US20080152491A1 (en) * 2006-12-26 2008-06-26 Davies Lucy V Coatings for use in fuel system components
US20090026292A1 (en) * 2007-07-27 2009-01-29 Caterpillar Inc. Coatings for use in fuel system components
JP4492696B2 (ja) * 2007-12-25 2010-06-30 株式会社デンソー 燃料噴射弁
US9051910B2 (en) * 2013-01-31 2015-06-09 Caterpillar Inc. Valve assembly for fuel system and method
US9453486B1 (en) 2015-03-20 2016-09-27 Continental Automotive Systems, Inc. Gas direct injector with reduced leakage
CN106048538B (zh) * 2016-06-15 2018-04-17 济宁学院 AlZrN多元复合硬质涂层刀具及其制备工艺

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DE3716073A1 (de) * 1987-05-14 1988-04-07 Bosch Gmbh Robert Elektromagnetisch betaetigbares ventil
EP0504441A1 (fr) * 1988-03-04 1992-09-23 Hitachi, Ltd. Structure composite en céramique ayant une résistance élevée et son procédé de fabrication
EP0857700A1 (fr) * 1997-02-10 1998-08-12 Saint-Gobain Vitrage Substrat transparent muni d'au moins une couche mince à base de nitrure ou d'oxynitrure de silicium et son procédé d'obtention
DE10038954A1 (de) * 2000-08-09 2002-02-28 Siemens Ag Ventil, insbesondere Einspritzventil
DE10133433A1 (de) * 2001-07-10 2003-02-20 Bosch Gmbh Robert Kraftstoffeinspritzventil für Brennkraftmaschinen

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DE3623360A1 (de) * 1986-07-11 1988-01-14 Cameron Iron Works Gmbh Einrichtung mit einander benachbarten oberflaechen, zwischen denen hohe druecke und/oder hohe reibungsbeanspruchungen auftreten
JPH0821297A (ja) * 1994-06-30 1996-01-23 Yamaha Motor Co Ltd 内燃機関の摺接部構造
US5716709A (en) * 1994-07-14 1998-02-10 Competitive Technologies, Inc. Multilayered nanostructures comprising alternating organic and inorganic ionic layers
DE19548718C1 (de) * 1995-12-23 1997-05-28 Daimler Benz Ag Reibungsbelastetes Bauteil eines Verbrennungsmotors
US5771873A (en) * 1997-04-21 1998-06-30 Ford Global Technologies, Inc. Carbonaceous deposit-resistant coating for engine components
DE19816136A1 (de) * 1998-04-09 1999-10-14 Inst Neue Mat Gemein Gmbh Nanostrukturierte Formkörper und Schichten und deren Herstellung über stabile wasserlösliche Vorstufen
US6519847B1 (en) * 1998-06-12 2003-02-18 L. E. Jones Company Surface treatment of prefinished valve seat inserts
US6802457B1 (en) * 1998-09-21 2004-10-12 Caterpillar Inc Coatings for use in fuel system components
JP2001050133A (ja) * 1999-08-06 2001-02-23 Hitachi Ltd 電子燃料噴射弁
US6521324B1 (en) * 1999-11-30 2003-02-18 3M Innovative Properties Company Thermal transfer of microstructured layers
US6715693B1 (en) * 2000-02-15 2004-04-06 Caterpillar Inc Thin film coating for fuel injector components
ES2164029B1 (es) * 2000-07-07 2003-05-16 Fico Mirrors Sa Dispositivo electrocromico y aplicaciones correspondientes.
AU2002367628A1 (en) * 2001-01-29 2003-10-08 The Board Of Regents For Oklahoma State University Organic/inorganic multilayer coating system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3716073A1 (de) * 1987-05-14 1988-04-07 Bosch Gmbh Robert Elektromagnetisch betaetigbares ventil
EP0504441A1 (fr) * 1988-03-04 1992-09-23 Hitachi, Ltd. Structure composite en céramique ayant une résistance élevée et son procédé de fabrication
EP0857700A1 (fr) * 1997-02-10 1998-08-12 Saint-Gobain Vitrage Substrat transparent muni d'au moins une couche mince à base de nitrure ou d'oxynitrure de silicium et son procédé d'obtention
DE10038954A1 (de) * 2000-08-09 2002-02-28 Siemens Ag Ventil, insbesondere Einspritzventil
DE10133433A1 (de) * 2001-07-10 2003-02-20 Bosch Gmbh Robert Kraftstoffeinspritzventil für Brennkraftmaschinen

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009038637A1 (fr) * 2007-09-20 2009-03-26 Caterpillar Inc. Soupape revêtue d'un film mince
US8006715B2 (en) 2007-09-20 2011-08-30 Caterpillar Inc. Valve with thin-film coating
DE102008025175A1 (de) * 2008-05-26 2009-12-03 BAM Bundesanstalt für Materialforschung und -prüfung Verfahren zur Abscheidung einer überrollbeständigen Dünnschicht auf ein hochbeanspruchtes, flüssig-geschmiertes Substrat in geschlossenen Tribosystemen, beschichtetes Substrat sowie geschlossenes, flüssiggeschmiertes Tribosystem
WO2010116221A1 (fr) * 2009-03-24 2010-10-14 Robert Bosch Gmbh Dispositif d'injection de carburant dans la chambre de combustion d'une machine à combustion interne
WO2015155275A1 (fr) * 2014-04-09 2015-10-15 Oerlikon Surface Solutions Ag, Trübbach Système tribologique avec usure réduite de corps antagoniste
CN106460158A (zh) * 2014-04-09 2017-02-22 欧瑞康表面解决方案股份公司，普费菲孔 具有降低的相对体磨损的摩擦学系统
CN110373519A (zh) * 2019-07-12 2019-10-25 重庆文理学院 一种高硬度耐磨损的不锈钢的制备方法
CN110373519B (zh) * 2019-07-12 2021-03-16 重庆文理学院 一种高硬度耐磨损的不锈钢的制备方法

Also Published As

Publication number Publication date
EP1387082A3 (fr) 2005-09-21
US20040187798A1 (en) 2004-09-30
DE10234588A1 (de) 2004-02-19

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