EP0275841A3 - Process for obtaining a valve seat - Google Patents

Process for obtaining a valve seat Download PDF

Info

Publication number
EP0275841A3
EP0275841A3 EP87830446A EP87830446A EP0275841A3 EP 0275841 A3 EP0275841 A3 EP 0275841A3 EP 87830446 A EP87830446 A EP 87830446A EP 87830446 A EP87830446 A EP 87830446A EP 0275841 A3 EP0275841 A3 EP 0275841A3
Authority
EP
European Patent Office
Prior art keywords
obtaining
valve seat
duct
eliminated
internal combustion
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Withdrawn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
EP87830446A
Other languages
German (de)
French (fr)
Other versions
EP0275841A2 (en
Inventor
Luigi Joli
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.)
Fiat Auto SpA
Original Assignee
Fiat Auto SpA
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 Fiat Auto SpA filed Critical Fiat Auto SpA
Publication of EP0275841A2 publication Critical patent/EP0275841A2/en
Publication of EP0275841A3 publication Critical patent/EP0275841A3/en
Withdrawn legal-status Critical Current

Links

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
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/24—Cylinder heads
    • F02F1/42—Shape or arrangement of intake or exhaust channels in cylinder heads
    • F02F1/4235—Shape or arrangement of intake or exhaust channels in cylinder heads of intake channels
    • 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
    • F01L3/22—Valve-seats not provided for in preceding subgroups of this group; Fixing of valve-seats
    • 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
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/24—Cylinder heads
    • F02F2001/244—Arrangement of valve stems in cylinder heads
    • F02F2001/245—Arrangement of valve stems in cylinder heads the valve stems being orientated at an angle with the cylinder axis

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Lift Valve (AREA)
  • Rolling Contact Bearings (AREA)
  • Forging (AREA)

Abstract

The invention concerns a process for obtaining a valve seat (3) in an intake duct of an internal combustion engine in which the finishing milling of the duct is eliminated, thus obtaining improvements in engine performance.
EP87830446A 1986-12-23 1987-12-17 Process for obtaining a valve seat Withdrawn EP0275841A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT6796386 1986-12-23
IT67963/86A IT1196870B (en) 1986-12-23 1986-12-23 PROCEDURE FOR OBTAINING A VALVE SEAT

Publications (2)

Publication Number Publication Date
EP0275841A2 EP0275841A2 (en) 1988-07-27
EP0275841A3 true EP0275841A3 (en) 1990-01-31

Family

ID=11306764

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87830446A Withdrawn EP0275841A3 (en) 1986-12-23 1987-12-17 Process for obtaining a valve seat

Country Status (4)

Country Link
EP (1) EP0275841A3 (en)
BR (1) BR8706933A (en)
IT (1) IT1196870B (en)
YU (1) YU47052B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4029881C2 (en) * 1990-09-21 1994-01-20 Porsche Ag Method for fitting valve seat rings in internal combustion engines
DE19653909C1 (en) * 1996-12-21 1998-04-02 Daimler Benz Ag Cylinder head for internal combustion engine
SE517687C2 (en) 1997-12-23 2002-07-02 Scania Cv Ab Cylinder head for internal combustion engines
FR2913457B1 (en) * 2007-03-07 2013-09-06 Renault Sas VALVE SEAT FOR INTAKE DUCT, THERMAL MOTOR HEAD, AND METHOD OF MANUFACTURE.
FR2926111A3 (en) * 2008-01-03 2009-07-10 Renault Sas Cylinder head manufacturing method for e.g. petrol engine of motor vehicle, involves assembling valve seat in gas inlet conduit, and modifying valve seat in upstream of valve face to transform valve seat into flat valve seat
JP2017110604A (en) * 2015-12-17 2017-06-22 ヤマハ発動機株式会社 Internal combustion engine, vehicle including the same, and manufacturing method of internal combustion engine
US11060425B2 (en) * 2019-03-13 2021-07-13 Caterpillar Inc. Valve seat insert for engine head having venturi flow crowns and seating surface profiled for limiting valve recession

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR822334A (en) * 1937-05-28 1937-12-28 Improvements to cylinder blocks for internal combustion engines
GB1042147A (en) * 1962-04-05 1966-09-14 Humber Ltd Improvements relating to cylinders or cylinder heads for internal combustion engines
DE2048567A1 (en) * 1969-10-02 1971-04-15 Parry, John, Orilha, Ontario (Kana da) Method for replacing a valve seat in a cylinder head
AT331575B (en) * 1972-06-20 1976-08-25 List Hans COMBUSTION ENGINE WITH INNER MIXTURE, IN PARTICULAR DIESEL ENGINE
GB1494244A (en) * 1974-02-16 1977-12-07 Maschf Augsburg Nuernberg Ag Cylinder head for internal combustion engine
AT378827B (en) * 1983-06-23 1985-10-10 Avl Verbrennungskraft Messtech INTERNAL COMBUSTION ENGINE

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR822334A (en) * 1937-05-28 1937-12-28 Improvements to cylinder blocks for internal combustion engines
GB1042147A (en) * 1962-04-05 1966-09-14 Humber Ltd Improvements relating to cylinders or cylinder heads for internal combustion engines
DE2048567A1 (en) * 1969-10-02 1971-04-15 Parry, John, Orilha, Ontario (Kana da) Method for replacing a valve seat in a cylinder head
AT331575B (en) * 1972-06-20 1976-08-25 List Hans COMBUSTION ENGINE WITH INNER MIXTURE, IN PARTICULAR DIESEL ENGINE
GB1494244A (en) * 1974-02-16 1977-12-07 Maschf Augsburg Nuernberg Ag Cylinder head for internal combustion engine
AT378827B (en) * 1983-06-23 1985-10-10 Avl Verbrennungskraft Messtech INTERNAL COMBUSTION ENGINE

Also Published As

Publication number Publication date
IT8667963A0 (en) 1986-12-23
IT1196870B (en) 1988-11-25
YU229087A (en) 1990-02-28
YU47052B (en) 1994-12-28
BR8706933A (en) 1988-07-26
EP0275841A2 (en) 1988-07-27

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Legal Events

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Effective date: 19900926