WO2006097264A1 - Gaswechselventil mit korrosionsschutzschicht - Google Patents
Gaswechselventil mit korrosionsschutzschicht Download PDFInfo
- Publication number
- WO2006097264A1 WO2006097264A1 PCT/EP2006/002292 EP2006002292W WO2006097264A1 WO 2006097264 A1 WO2006097264 A1 WO 2006097264A1 EP 2006002292 W EP2006002292 W EP 2006002292W WO 2006097264 A1 WO2006097264 A1 WO 2006097264A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- valve
- layer
- nitriding
- gas exchange
- nitride
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/32—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for rotating lift valves, e.g. to diminish wear
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
- C23C8/28—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases more than one element being applied in one step
- C23C8/30—Carbo-nitriding
- C23C8/32—Carbo-nitriding of ferrous surfaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L3/00—Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
- F01L3/02—Selecting particular materials for valve-members or valve-seats; Valve-members or valve-seats composed of two or more materials
- F01L3/04—Coated valve members or valve-seats
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L3/00—Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
- F01L3/06—Valve members or valve-seats with means for guiding or deflecting the medium controlled thereby, e.g. producing a rotary motion of the drawn-in cylinder charge
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Definitions
- the invention relates to a gas exchange valve of an internal combustion engine with a valve cone substantially from a valve stem, which merges into a valve plate to form a groove.
- valve element on the sealing surface is armored with a particularly resistant CrNi alloy.
- the other parts of the gas exchange valve are subject to different requirements in terms of warm, long-term and corrosion resistance.
- different requirements with respect to the thermal, fatigue and corrosion resistance at the various temperature zones of the valve cone are taken into account by the fact that the valve disk is made of a high-temperature and erosion-resistant material, while the valve stem together with the propeller of a material with low notch sensitivity and high fatigue strength that is, has sufficient toughness to meet the bending stresses occurring in this area.
- a material of a typical valve steel or of a superalloy, such as NiCr2OTiAI and for the valve stem with propeller a material from a typical valve steel, such as X45CrSi9-3 used.
- steels made of a nickel-based alloy are very expensive in order to avoid the corrosion load, so that largely where tolerable the gas exchange valve is just made of the typical valve steel, such as X45CrSi9-3.
- valve stem and groove are attacked by wet corrosion (condensation) due to dew point of the combustion gases during engine standstill.
- plasma nitriding / plasma nitrocarburizing is understood to mean hardening of surface layers of steels in which nitrogen or carbon atoms diffuse in and thereby react with iron in a thin surface layer to form nitrides or carbonitrides, the bonding layer (VS).
- the nitrogen is only partially precipitated as a nitride during cooling and then causes the increase in hardness.
- the hardness itself depends on the type of nitrides.
- nitriding times and layers differ. In other words, there is a diffusion saturation of the surface layer of a material with nitrogen to increase hardness, wear resistance, fatigue strength or corrosion resistance.
- the surface layer after nitriding / nitrocarburizing consists of an outer nitride or carbonitride layer (bonding layer) and a subsequent layer of nitrogen-enriched mixed crystals and precipitated nitrides (diffusion layer).
- the nitriding times can be shortened (plasma nitriding at 450 ° C to 55O 0 C).
- nitrocarburizing in which the treating agent in addition to nitrogen containing and carbon-donating components (plasma nitrocarburizing at 500 0 C to 59 ° C 1 0 preferably at about 520 ° C) may be in powder, salt bath, gas or plasma is just nitrocarburized.
- valve body of the gas exchange valve is made in one piece and armored as described above, the valve plate to the sealing surface or the seating area, so in a preferred manner, the nitride or carbonitride completely on the valve stem and the groove provided to the armored sealing surface.
- the gas exchange valve in particular an exhaust valve (1) for an internal combustion engine, has a rotary device in the form of a propeller (3) arranged on its valve stem (2).
- the valve disk (4) is chamfered on its sealing surface (5).
- the blades (6) of the propeller (3) are milled out of the rotary shape of the propeller.
- valve disk (4) is made of a high-temperature and erosion-resistant material, while the valve stem (2) together with the propeller (3) consists of a material with low notch sensitivity and high fatigue strength, ie has sufficient toughness to meet the bending stresses occurring in this area.
- a material of a typical valve steel or of a superalloy such as, for example, is used.
- the valve disk (4) is connected to the valve stem (2) by friction welding (7).
- the valve cone is provided with a corrosion protection layer in the form of a nitriding layer (8), whereby the corrosion protection layer is obtained by reacting the nitride-forming base alloy by plasma nitriding or plasma nitrocarburizing in a nitrogen or nitrogen-carbon atmosphere is generated.
- the complete valve stem (2) is provided with the nitriding layer (8) until friction welding (7), at which the hot-work steel material is limited, the region of the groove (11) remains open.
- the two end faces on the valve plate (4) and on the valve stem (2) remain recessed with respect to the nitride or carbonitride layer (8).
- the complete valve plug (1) except for the armored valve seat portion (5) of the valve disc (4) and to the plate bottom and the valve stem end face with the nitriding layer (8) may be provided.
- the surface is converted in such a way that a hard, wear-resistant edge layer is formed.
- the valve plug blank is processed either partially in the form of the valve stem or complete with valve stem (2) and valve disc (4) through all manufacturing steps, so that it is present in its final surface roughness, followed by plasma nitriding or Plasmanitrocarburieren.
- plasma nitriding or Plasmanitrocarburieren Aftertreatment of the nitrided gas exchange valve is possible but not necessary (however, the aftertreatment in the areas of the gas exchange valve to be protected from corrosion should not be carried out in order not to remove the connection layer produced).
- the valve plug (1) can be ground after nitriding.
- the nitriding layer has a diffusion layer (9) with a thickness (nitriding hardening depth) of 0.1 mm to 0.3 mm and a connecting layer (10) constructed thereon of 3 ⁇ m to 15 ⁇ m as characteristic of the anticorrosion layers produced and has a surface hardness greater than 750 HV (Vickers).
- plasma nitrocarburization with the addition of carbon is preferable.
- plasma nitriding or plasmanitrocarburizing the valve plug (1) a significantly improved corrosion protection and an increase in the fatigue strength is achieved, ie longer maintenance intervals or component life are achieved and counteracted cracking by bending stress.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
- Lift Valve (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008501214A JP2008533372A (ja) | 2005-03-18 | 2006-03-14 | 耐食防護層付き高温ガス弁 |
US11/886,649 US20080149062A1 (en) | 2005-03-18 | 2006-03-14 | Gas Shuttle Valve Provided With an Anti-Corrosive Layer |
CA002601053A CA2601053A1 (en) | 2005-03-18 | 2006-03-14 | Gas exchange valve having corrosion protection layer |
EP06707539A EP1864003A1 (de) | 2005-03-18 | 2006-03-14 | Gaswechselventil mit korrosionsschutzschicht |
NO20075320A NO20075320L (no) | 2005-03-18 | 2007-10-17 | Gassutvekslingsventil med korrosjonsbeskyttelsessjikt |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005013088A DE102005013088B4 (de) | 2005-03-18 | 2005-03-18 | Gaswechselventil mit Korrosionsschutzschicht |
DE102005013088.7 | 2005-03-18 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006097264A1 true WO2006097264A1 (de) | 2006-09-21 |
Family
ID=36602668
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2006/002292 WO2006097264A1 (de) | 2005-03-18 | 2006-03-14 | Gaswechselventil mit korrosionsschutzschicht |
Country Status (10)
Country | Link |
---|---|
US (1) | US20080149062A1 (de) |
EP (1) | EP1864003A1 (de) |
JP (1) | JP2008533372A (de) |
KR (1) | KR20070112287A (de) |
CN (1) | CN101142379A (de) |
CA (1) | CA2601053A1 (de) |
DE (1) | DE102005013088B4 (de) |
NO (1) | NO20075320L (de) |
RU (1) | RU2007138648A (de) |
WO (1) | WO2006097264A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20110061365A1 (en) * | 2008-05-13 | 2011-03-17 | Mads Lytje Christensen | Exhaust valve for a large sized two stroke diesel engine, process for reduction on nox-formation in such an engine and such engine |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008018875A1 (de) | 2008-04-14 | 2009-10-15 | Märkisches Werk GmbH | Auslassventil an einem Hubkolbenmotor |
DE102008061237A1 (de) * | 2008-12-09 | 2010-06-10 | Man Diesel Se | Gaswechselventil und Verfahren zu seiner Herstellung |
KR101129406B1 (ko) * | 2009-01-23 | 2012-03-26 | 맨 디젤 앤드 터보 필리얼 아프 맨 디젤 앤드 터보 에스이 티스크랜드 | 내부 연소 엔진을 위한 배기 밸브 스핀들 또는 피스톤 형태의 가동 벽 부재 및, 가동 벽 부재의 제조 방법 |
KR101274239B1 (ko) * | 2010-12-02 | 2013-06-11 | 기아자동차주식회사 | 차량용 흡배기 밸브 |
DE102012202859A1 (de) | 2012-02-24 | 2013-08-29 | Mahle International Gmbh | Ventilsystem zur Ladungswechselsteuerung |
US9051910B2 (en) * | 2013-01-31 | 2015-06-09 | Caterpillar Inc. | Valve assembly for fuel system and method |
DE102013203443A1 (de) * | 2013-02-28 | 2014-08-28 | Mahle International Gmbh | Metallisches Hohlventil |
DE102013203441A1 (de) | 2013-02-28 | 2014-08-28 | Bayerische Motoren Werke Aktiengesellschaft | Betriebsverfahren für ein einachsiges Wankstabilisierungssystem eines zweiachsigen, zweispurigen Fahrzeugs |
DE102013210900A1 (de) * | 2013-06-11 | 2014-12-11 | Mahle International Gmbh | Gaswechselventil einer Brennkraftmaschine |
CN103498711A (zh) * | 2013-10-21 | 2014-01-08 | 济南沃德汽车零部件有限公司 | 盘锥面堆焊合金并在合金层上保留氮化层的气门 |
KR102309162B1 (ko) * | 2017-05-17 | 2021-10-05 | 페데랄-모굴 밸브트레인 게엠베하 | 포펫 밸브 및 그것의 생산 방법(poppet valve and method for production thereof) |
DE102019207536A1 (de) * | 2019-05-23 | 2020-11-26 | Mahle International Gmbh | Gaswechselventil |
CN114810270B (zh) * | 2022-04-07 | 2023-08-01 | 重庆乐瑞斯科技有限公司 | 升程可自适应调节型配气机构 |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3748195A (en) * | 1970-07-21 | 1973-07-24 | Nissan Motor | Method for forming a soft nitride layer in a metal surface |
EP0657629A1 (de) * | 1993-12-08 | 1995-06-14 | M.A.N. - B&W Diesel GmbH | Gaswechselventil für eine Brennkraftmaschine |
US5441235A (en) * | 1994-05-20 | 1995-08-15 | Eaton Corporation | Titanium nitride coated valve and method for making |
EP0681039A1 (de) * | 1992-11-04 | 1995-11-08 | Fuji Oozx Inc. | Ventilschaftstruktur für Motor aus einer Titanlegierung |
EP0806551A2 (de) * | 1996-05-08 | 1997-11-12 | TRW Deutschland GmbH | Herstellungsverfahren für ein nitriertes Bimetallventil |
US6318327B1 (en) * | 1999-05-31 | 2001-11-20 | Nippon Piston Ring Co., Ltd. | Valve system for internal combustion engine |
EP1353045A2 (de) * | 2002-04-12 | 2003-10-15 | Fuji Oozx Inc. | Hubventil |
WO2004005572A1 (en) * | 2002-07-03 | 2004-01-15 | Sandvik Ab | Surface modified stainless steel |
EP1462621A1 (de) * | 2003-03-28 | 2004-09-29 | Eaton Corporation | Zusammengesetztes, leichtes Hubventil für Brennkraftmaschine |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1902676A (en) * | 1929-12-19 | 1933-03-21 | Sutton Hubert | Hardening alloy steels |
US2745777A (en) * | 1951-12-20 | 1956-05-15 | Armco Steel Corp | Internal combustion engine valves and the like |
KR0148414B1 (ko) * | 1992-07-16 | 1998-11-02 | 다나카 미노루 | 티타늄 합금제 엔진밸브 및, 그것의 제조방법 |
US5960760A (en) * | 1998-02-20 | 1999-10-05 | Eaton Corporation | Light weight hollow valve assembly |
US5934238A (en) * | 1998-02-20 | 1999-08-10 | Eaton Corporation | Engine valve assembly |
JP3553549B2 (ja) * | 1999-11-10 | 2004-08-11 | 株式会社セム | 鉄族系合金基材の窒化加工方法および窒化鉄族系合金基材ならびにエンジンバルブ |
-
2005
- 2005-03-18 DE DE102005013088A patent/DE102005013088B4/de not_active Revoked
-
2006
- 2006-03-14 JP JP2008501214A patent/JP2008533372A/ja not_active Withdrawn
- 2006-03-14 EP EP06707539A patent/EP1864003A1/de not_active Withdrawn
- 2006-03-14 RU RU2007138648/06A patent/RU2007138648A/ru not_active Application Discontinuation
- 2006-03-14 KR KR1020077023714A patent/KR20070112287A/ko not_active Application Discontinuation
- 2006-03-14 CN CNA2006800086932A patent/CN101142379A/zh active Pending
- 2006-03-14 US US11/886,649 patent/US20080149062A1/en not_active Abandoned
- 2006-03-14 WO PCT/EP2006/002292 patent/WO2006097264A1/de active Application Filing
- 2006-03-14 CA CA002601053A patent/CA2601053A1/en not_active Abandoned
-
2007
- 2007-10-17 NO NO20075320A patent/NO20075320L/no not_active Application Discontinuation
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3748195A (en) * | 1970-07-21 | 1973-07-24 | Nissan Motor | Method for forming a soft nitride layer in a metal surface |
EP0681039A1 (de) * | 1992-11-04 | 1995-11-08 | Fuji Oozx Inc. | Ventilschaftstruktur für Motor aus einer Titanlegierung |
EP0657629A1 (de) * | 1993-12-08 | 1995-06-14 | M.A.N. - B&W Diesel GmbH | Gaswechselventil für eine Brennkraftmaschine |
US5441235A (en) * | 1994-05-20 | 1995-08-15 | Eaton Corporation | Titanium nitride coated valve and method for making |
EP0806551A2 (de) * | 1996-05-08 | 1997-11-12 | TRW Deutschland GmbH | Herstellungsverfahren für ein nitriertes Bimetallventil |
US6318327B1 (en) * | 1999-05-31 | 2001-11-20 | Nippon Piston Ring Co., Ltd. | Valve system for internal combustion engine |
EP1353045A2 (de) * | 2002-04-12 | 2003-10-15 | Fuji Oozx Inc. | Hubventil |
WO2004005572A1 (en) * | 2002-07-03 | 2004-01-15 | Sandvik Ab | Surface modified stainless steel |
EP1462621A1 (de) * | 2003-03-28 | 2004-09-29 | Eaton Corporation | Zusammengesetztes, leichtes Hubventil für Brennkraftmaschine |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20110061365A1 (en) * | 2008-05-13 | 2011-03-17 | Mads Lytje Christensen | Exhaust valve for a large sized two stroke diesel engine, process for reduction on nox-formation in such an engine and such engine |
US8869511B2 (en) * | 2008-05-13 | 2014-10-28 | Man Diesel & Turbo, Filial Af Man Diesel & Turbo Se, Tyskland | Exhaust valve for a large sized two stroke diesel engine, process for reduction on NOx-formation in such an engine and such engine |
Also Published As
Publication number | Publication date |
---|---|
EP1864003A1 (de) | 2007-12-12 |
KR20070112287A (ko) | 2007-11-22 |
US20080149062A1 (en) | 2008-06-26 |
CA2601053A1 (en) | 2006-09-21 |
DE102005013088B4 (de) | 2006-12-28 |
RU2007138648A (ru) | 2009-04-27 |
CN101142379A (zh) | 2008-03-12 |
NO20075320L (no) | 2007-12-13 |
DE102005013088A1 (de) | 2006-09-21 |
JP2008533372A (ja) | 2008-08-21 |
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