EP1353045A2 - Hubventil - Google Patents

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Publication number
EP1353045A2
EP1353045A2 EP03007678A EP03007678A EP1353045A2 EP 1353045 A2 EP1353045 A2 EP 1353045A2 EP 03007678 A EP03007678 A EP 03007678A EP 03007678 A EP03007678 A EP 03007678A EP 1353045 A2 EP1353045 A2 EP 1353045A2
Authority
EP
European Patent Office
Prior art keywords
heat
valve
poppet valve
front face
poppet
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Withdrawn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
EP03007678A
Other languages
English (en)
French (fr)
Other versions
EP1353045A3 (de
Inventor
Haruki c/o Fuji Oozx Inc. Kobayashi
Junichi c/o Fuji Oozx Inc. Fukuda
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.)
Fuji Oozx Inc
Original Assignee
Fuji Oozx Inc
Fuji Valve Co Ltd
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 Fuji Oozx Inc, Fuji Valve Co Ltd filed Critical Fuji Oozx Inc
Publication of EP1353045A2 publication Critical patent/EP1353045A2/de
Publication of EP1353045A3 publication Critical patent/EP1353045A3/de
Withdrawn legal-status Critical Current

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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
    • 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
    • F01L3/02—Selecting particular materials for valve-members or valve-seats; Valve-members or valve-seats composed of two or more materials
    • 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
    • C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
    • 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
    • C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
    • C23C28/04—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings of inorganic non-metallic material
    • 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
    • C23C30/00—Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process
    • 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
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas

Definitions

  • the present invention relates to a poppet valve which is capable of reducing thermal load in a valve head.
  • An intake valve is heated on a front face of a valve head which faces a cylinder at approximately 100 % and cooled at a rear portion of the valve head so that heat may be left into intake air and at the same time left from a valve stem and a valve face into a cylinder head through a valve guide and a valve seat.
  • An exhaust valve is heated at a front face and a rear portion at approximately 7:3. Heat is thereby transferred from a valve stem and a valve face into the cylinder head through the valve guide and the valve seat.
  • Temperature of the intake and exhaust valves during operation is determined by the balance between heating and cooling.
  • the valve head increases in temperature, depending on operating conditions, causing an increase in thermal load since cooling is generally less than heating.
  • Poppet valves are generally made of martensite heat-resistant steel, mainly for intake valves, and austenite heat-resistant steel for exhaust valves.
  • Heat-resistant steels are relatively expensive thereby limiting potential decreases in the manufacturing cost of poppet valves.
  • Intake valves having relatively low thermal load are made of Al alloy thereby lightening a valve-operating mechanism to improve engine performance.
  • there are disadvantages in high-temperature strength thereby making practical use impossible.
  • Fig. 1 illustrates the first embodiment of a poppet valve used as an exhaust valve according to the present invention.
  • the poppet valve 1 consists of a valve stem 2 and a valve head 3 made of austenite heat-resistant steel.
  • the valve head 3 consists of a front face 3b opposite a cylinder (not shown) and a rear portion 3c in an exhaust port. The whole surface of the valve head 3 except a valve face 3a is covered with a film 4 made of heat-resistant heat-insulating material.
  • the heat-insulating material includes ceramic oxides such as alumina, cordierite, zirconia, zircon and titanium oxide; ceramic carbides such as silicon carbide; ceramic nitrides such as silicon niride; aluminum silicate; chromium oxide; WC-Co alloy; WC-Ni-W-Cr 3 C 2 alloy and Cr 3 C 2 -Ni-Cr alloy.
  • the film 4 may be made using gas flame or arc spraying, plasma spraying, explosion spraying, sputtering or ion plating.
  • the film 4 may have thickness of 0.1 to 2.0 mm to insulate heat and decrease weight.
  • the heat-insulating material as above may be sprayed after the surface on which the film is formed is made rough by using shot blasting or mechanical working.
  • a film 4 that consists of multiple layers having different contents of heat-insulating material may be formed.
  • the first layer 4a is a highly adhesive binding layer made from the same material as the valve. Heat-insulating materials are increased in conjunction with the increase in layers.
  • An outermost layer 4b is made only of heat-insulating material. The surface of the film may be sprayed without making a rough surface. In the case of intake valves, the film 4 on the rear portion 3c may be omitted.
  • Fig. 4 illustrates the second embodiment of the present invention, in which a thin convex heat-shielding plate 7 made of heat-insulating material, as described above, or heat-resistant material such as heat-resistant steel is mounted to a front face 6a of a valve head 6 of a martensite heat-resistant steel poppet valve 5 to form a heat-insulating space 8 between the plate 7 and the front face 6.
  • a thin convex heat-shielding plate 7 made of heat-insulating material, as described above, or heat-resistant material such as heat-resistant steel is mounted to a front face 6a of a valve head 6 of a martensite heat-resistant steel poppet valve 5 to form a heat-insulating space 8 between the plate 7 and the front face 6.
  • an L-sectioned mounting portion 7a is formed on the circumferential end, and is engaged in an annular groove 9 on the circumferential end of the front face 6a. Then, the circumferential end of the front face 6a is plastically reconfigured inwards.
  • the circumferential end of the heat-shielding plate 7 may be welded to the front face 6a.
  • the convex heat-shielding plate 7 provides sufficient bending strength against pressure and decreases concave deformation.
  • Fig. 5 illustrates the third embodiment of a poppet valve according to the present invention in which a heat-shielding plate 10, made of the same material as the above, has multiple reinforcement ribs 11 on the upper surface.
  • a mounting portion 10a formed in the upper circumferential end is fixed to the circumferential end of a front face by the above caulking method to form a heat-insulating space 8 against the front face 6a.
  • Fig. 6 illustrates the fourth embodiment of a poppet valve according to the present invention in which a front face 6a of a poppet valve 5 is convex.
  • a concave heat-shielding plate 12 having multiple reinforcement ribs 11 on the upper surface is fixed to the circumferential end of the front face 6a using an L-shaped mounting portion 12a on the circumferential end of the plate 12 by the above caulking method.
  • the heat-insulating space 8 is formed between the front face 6a and the heat-shielding plate 12 while the upper ends of the reinforcement ribs 11 are engaged on the front face 6a.
  • the reinforcement rib may be formed as grid, concentric circle, vortex, parallel plate, corrugated plate, incomplete circle, arc and protrusion.
  • the reinforcement rib may be provided on the front face 6a.
  • the reinforcement rib as described above, may be provided in the embodiment in Fig. 4.
  • the film may be formed on the rear portion 6b similar to the first embodiment in case of exhaust valves.
  • a light heat-insulating filler such as glass wool and rock wool or a heat-insulating gas such as Ar may be enclosed under ordinary or high pressure. Space 8 may be vacuous.
  • the front face 3b and the rear portion 3c subjected to a high-temperature combustion or exhaust gas are covered with the film 4 made of heat-insulating material.
  • the heat-shielding plates 7,10,12 are mounted to the front face 6a to form a heat-insulating space 8.
  • Heat into the valve head 3,6 decreases, and generally dissipates through a valve seat or a valve guide thereby decreasing valve temperature during operation and improving durability. Heat into the valve head 3,6 decreases the heat loss rate and increases thermal efficiency thereby improving engine performance such as output and fuel efficiency.
  • valve Furthermore, a decrease in thermal load enables the valve to be made of low-cost material such as carbon steel or mechanical structural steel.
  • the present invention allows for poppet valves to be made of lightweight metals such as Al, Mg and Ti alloys which were heretofore difficult in use thereby reducing the inertia mass of a valve-operating mechanism to decrease mechanical loss such as friction so as to achieve double improvement in engine performance with decreased heat loss.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Inorganic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Lift Valve (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Coating By Spraying Or Casting (AREA)
EP03007678A 2002-04-12 2003-04-03 Hubventil Withdrawn EP1353045A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2002109861A JP2003307105A (ja) 2002-04-12 2002-04-12 エンジンバルブ
JP2002109861 2002-04-12

Publications (2)

Publication Number Publication Date
EP1353045A2 true EP1353045A2 (de) 2003-10-15
EP1353045A3 EP1353045A3 (de) 2004-03-10

Family

ID=28449972

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03007678A Withdrawn EP1353045A3 (de) 2002-04-12 2003-04-03 Hubventil

Country Status (4)

Country Link
EP (1) EP1353045A3 (de)
JP (1) JP2003307105A (de)
KR (1) KR20030081165A (de)
CN (1) CN1451850A (de)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006097264A1 (de) * 2005-03-18 2006-09-21 Man B & W Diesel Aktiengesellschaft Gaswechselventil mit korrosionsschutzschicht
DE102006053550A1 (de) * 2006-11-14 2008-05-15 Man Diesel Se Brennkraftmaschine sowie Gaswechselventil einer Brennkraftmaschine
DE102006061128A1 (de) * 2006-12-22 2008-06-26 Mahle International Gmbh Gaswechselventil eines Verbrennungsmotors
EP1746179A3 (de) * 2005-06-22 2009-09-30 Yamaha Hatsudoki Kabushiki Kaisha Titanteil für eine Brennkraftmaschine
US20100077983A1 (en) * 2008-10-01 2010-04-01 Aisan Kogyo Kabushiki Kaisha Engine valves
EP2182183A1 (de) * 2008-10-31 2010-05-05 Mahle International GmbH Beweglicher, heißen Gasen ausgesetzter Verschlusskörper eines Ventiles
US8376721B2 (en) 2006-11-01 2013-02-19 Borgwarner Inc. Turbine heat shield assembly
DE102013213268A1 (de) * 2013-07-05 2015-01-08 Mahle International Gmbh Gebautes Hohlventil
WO2015182248A1 (en) * 2014-05-30 2015-12-03 Toyota Jidosha Kabushiki Kaisha Supercharged internal combustion engine
DE102014219917A1 (de) * 2014-10-01 2016-04-07 Mahle International Gmbh Wirbelstromventil
EP3106634A4 (de) * 2014-02-12 2017-11-29 Nittan Valve Co., Ltd. Kegelventil
WO2019086244A1 (en) * 2017-10-30 2019-05-09 Eaton Intelligent Power Limited Poppet valve
DE102018118791A1 (de) * 2018-08-02 2020-02-06 Federal-Mogul Valvetrain Gmbh Tellerventil mit einer Hochtemperatur-Beschichtung
US10731538B2 (en) 2017-12-19 2020-08-04 Toyota Jidosha Kabushiki Kaisha Internal combustion engine
US11767774B2 (en) 2017-10-30 2023-09-26 Eaton Intelligent Power Limited Poppet valve

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013170555A (ja) * 2012-02-23 2013-09-02 Mazda Motor Corp 断熱構造体及びその製造方法
US9441287B2 (en) 2012-10-31 2016-09-13 Fukuda Metal Foil & Powder Co., Ltd. Ni-Cr-Co-based alloy having high-temperature corrosion resistance, and poppet valve surface-modified with the same
CN104995377B (zh) * 2013-02-15 2018-01-02 丰田自动车株式会社 提升阀
JP6109945B2 (ja) * 2013-09-11 2017-04-05 日鍛バルブ株式会社 エンジンバルブ及びエンジンバルブの製造方法
MX2016009708A (es) * 2014-02-10 2016-11-08 Nittan Valva Valvula de asiento hueca.
KR101566743B1 (ko) 2014-04-18 2015-11-06 현대자동차 주식회사 엔진용 배기 밸브
KR101575328B1 (ko) 2014-04-29 2015-12-07 현대자동차 주식회사 엔진용 흡기 밸브
JP6609124B2 (ja) * 2015-06-23 2019-11-20 イビデン株式会社 エンジンバルブ及びその製造方法
JP6832204B2 (ja) * 2017-03-27 2021-02-24 三菱重工業株式会社 弁装置、タービンハウジング、排気タービン過給機及びエンジン
KR102285017B1 (ko) 2018-03-20 2021-08-04 니탄 밸브 가부시키가이샤 배기용 중공 포핏 밸브
JP7190506B2 (ja) 2018-11-12 2022-12-15 株式会社Nittan エンジンのポペットバルブの製造方法
EP4129525A4 (de) 2020-03-30 2023-06-14 Nittan Corporation Verfahren zur herstellung eines motortellerventils
JP2022113437A (ja) * 2021-01-25 2022-08-04 フジオーゼックス株式会社 中空エンジンバルブ

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB618607A (en) * 1946-06-04 1949-02-24 William Thomas Davies Improvements in or relating to the production of corrosion resistant coatings on poppet valves for internal-combustion engines
DE3150708A1 (de) * 1981-12-22 1983-07-07 Gesenkschmiede Schneider Gmbh, 7080 Aalen "tellerventil als auslassventil fuer hochbelastbare motore"
US4530322A (en) * 1980-10-31 1985-07-23 Nippon Kokan Kabushiki Kaisha Exhaust valve for diesel engine and production thereof
CH658101A5 (en) * 1982-04-07 1986-10-15 I K Technology A S Valve for diesel engines
US5543029A (en) * 1994-04-29 1996-08-06 Fuji Oozx Inc. Properties of the surface of a titanium alloy engine valve

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB618607A (en) * 1946-06-04 1949-02-24 William Thomas Davies Improvements in or relating to the production of corrosion resistant coatings on poppet valves for internal-combustion engines
US4530322A (en) * 1980-10-31 1985-07-23 Nippon Kokan Kabushiki Kaisha Exhaust valve for diesel engine and production thereof
DE3150708A1 (de) * 1981-12-22 1983-07-07 Gesenkschmiede Schneider Gmbh, 7080 Aalen "tellerventil als auslassventil fuer hochbelastbare motore"
CH658101A5 (en) * 1982-04-07 1986-10-15 I K Technology A S Valve for diesel engines
US5543029A (en) * 1994-04-29 1996-08-06 Fuji Oozx Inc. Properties of the surface of a titanium alloy engine valve

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006097264A1 (de) * 2005-03-18 2006-09-21 Man B & W Diesel Aktiengesellschaft Gaswechselventil mit korrosionsschutzschicht
EP1746179A3 (de) * 2005-06-22 2009-09-30 Yamaha Hatsudoki Kabushiki Kaisha Titanteil für eine Brennkraftmaschine
US7794846B2 (en) 2005-06-22 2010-09-14 Yamaha Hatsudoki Kabushiki Kaisha Titanium part for internal combustion engine
US8376721B2 (en) 2006-11-01 2013-02-19 Borgwarner Inc. Turbine heat shield assembly
DE102006053550A1 (de) * 2006-11-14 2008-05-15 Man Diesel Se Brennkraftmaschine sowie Gaswechselventil einer Brennkraftmaschine
DE102006061128A1 (de) * 2006-12-22 2008-06-26 Mahle International Gmbh Gaswechselventil eines Verbrennungsmotors
DE102006061128B4 (de) * 2006-12-22 2015-06-11 Mahle International Gmbh Gaswechselventil eines Verbrennungsmotors
US20100077983A1 (en) * 2008-10-01 2010-04-01 Aisan Kogyo Kabushiki Kaisha Engine valves
DE102009042545B4 (de) * 2008-10-01 2013-01-17 Aisan Kogyo K.K. Motorventile
US8726873B2 (en) 2008-10-31 2014-05-20 Mahle International Gmbh Moveable valve sealing body exposed to hot gases
DE102008054266A1 (de) * 2008-10-31 2010-05-06 Mahle International Gmbh Beweglicher, heißen Gasen ausgesetzter Verschlusskörper eines Ventiles
EP2182183A1 (de) * 2008-10-31 2010-05-05 Mahle International GmbH Beweglicher, heißen Gasen ausgesetzter Verschlusskörper eines Ventiles
DE102013213268A1 (de) * 2013-07-05 2015-01-08 Mahle International Gmbh Gebautes Hohlventil
EP3106634A4 (de) * 2014-02-12 2017-11-29 Nittan Valve Co., Ltd. Kegelventil
WO2015182248A1 (en) * 2014-05-30 2015-12-03 Toyota Jidosha Kabushiki Kaisha Supercharged internal combustion engine
CN106414984A (zh) * 2014-05-30 2017-02-15 丰田自动车株式会社 增压式内燃发动机
CN106414984B (zh) * 2014-05-30 2018-09-28 丰田自动车株式会社 增压式内燃发动机
DE102014219917A1 (de) * 2014-10-01 2016-04-07 Mahle International Gmbh Wirbelstromventil
WO2019086244A1 (en) * 2017-10-30 2019-05-09 Eaton Intelligent Power Limited Poppet valve
US11767774B2 (en) 2017-10-30 2023-09-26 Eaton Intelligent Power Limited Poppet valve
US10731538B2 (en) 2017-12-19 2020-08-04 Toyota Jidosha Kabushiki Kaisha Internal combustion engine
DE102018118791A1 (de) * 2018-08-02 2020-02-06 Federal-Mogul Valvetrain Gmbh Tellerventil mit einer Hochtemperatur-Beschichtung

Also Published As

Publication number Publication date
JP2003307105A (ja) 2003-10-31
CN1451850A (zh) 2003-10-29
KR20030081165A (ko) 2003-10-17
EP1353045A3 (de) 2004-03-10

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