GB2620065A - A casting for internal combustion engine - Google Patents

A casting for internal combustion engine Download PDF

Info

Publication number
GB2620065A
GB2620065A GB2315305.9A GB202315305A GB2620065A GB 2620065 A GB2620065 A GB 2620065A GB 202315305 A GB202315305 A GB 202315305A GB 2620065 A GB2620065 A GB 2620065A
Authority
GB
United Kingdom
Prior art keywords
casting
throat
air inlet
exhaust outlet
machined
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.)
Pending
Application number
GB2315305.9A
Inventor
Harris Christopher
Johnson Jack
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.)
Jaguar Land Rover Ltd
Original Assignee
Jaguar Land Rover 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 Jaguar Land Rover Ltd filed Critical Jaguar Land Rover Ltd
Publication of GB2620065A publication Critical patent/GB2620065A/en
Pending 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/0006—Working by laser beam, e.g. welding, cutting or boring taking account of the properties of the material involved
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/34—Laser welding for purposes other than joining
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/006—Vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/08—Non-ferrous metals or alloys
    • B23K2103/10—Aluminium or alloys thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/18—Dissimilar materials
    • B23K2103/26—Alloys of Nickel and Cobalt and Chromium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/50—Inorganic material, e.g. metals, not provided for in B23K2103/02 – B23K2103/26
    • B23K2103/52—Ceramics
    • 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
    • F01L2301/00—Using particular materials
    • 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
    • F01L2303/00—Manufacturing of components used in valve arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Plasma & Fusion (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Laser Beam Processing (AREA)

Abstract

A casting for an internal combustion engine comprising an air inlet opening and/or an exhaust outlet opening located in a combustion chamber. The air inlet opening (393) and/or the exhaust outlet opening form the outermost edge of an air inlet and/or exhaust outlet throat (368) which extend into the casting away from the opening(s). A portion of the air inlet and/or exhaust outlet throat is radially symmetrical about a central axis (67), and the cross-section of the throat in a plane perpendicular to the central axis comprises a radiused or a stepped profile. A method of manufacturing a component for an internal combustion engine comprising machining a radiused or stepped throat profile into a casting and laser cladding of the machined profile.

Claims (15)

1. A casting for an internal combustion engine, the casting comprising an air inlet opening located in a combustion chamber, wherein the air inlet opening comprises the outermost edge of an air inlet throat which extends into the casting away from the air inlet opening, wherein a portion of the air inlet throat is radially symmetrical about a central axis, and wherein the cross-section of the air inlet throat in a plane which passes through the central axis and the edge of the air inlet throat comprises a radiused profile.
2. A casting as claimed in claim 1, comprising an exhaust outlet opening located in the combustion chamber, wherein the exhaust outlet opening comprises the outermost edge of an exhaust outlet throat which extends into the casting away from the exhaust outlet opening, wherein a portion of the exhaust outlet throat is radially symmetrical about a second central axis, and wherein the cross-section of the exhaust outlet throat in a plane which passes through the second central axis and the edge of the exhaust outlet throat comprises a radiused profile.
3. A casting as claimed in claim 1 or claim 2, wherein the cross-section of the air inlet throat, and/or the exhaust outlet throat where present, comprises a concave radiused profile.
4. A casting as claimed in any preceding claim, wherein the cross-section of the air inlet throat, and/or the exhaust outlet throat where present, comprises a radiused profile having a radius of between 1mm and 5mm.
5. A casting as claimed in claim 4, wherein the cross-section of the air inlet throat, and/or the exhaust outlet throat where present, comprises a radiused profile having a radius of between 2.5mm and 3.5mm.
6. A casting as claimed in any preceding claim, wherein the casting is a cylinder head casting, and wherein the combustion chamber comprises a combustion chamber recess which extends into the cylinder head casting away from a bottom surface of the cylinder head casting, wherein the combustion chamber recess comprises a combustion chamber roof surface, wherein the air inlet opening, and the exhaust outlet opening where present, are located in the combustion chamber roof surface.
7. A method of manufacturing a component for an internal combustion engine, the method comprising providing a casting, wherein the casting comprises a combustion chamber having an air inlet opening located therein, the method of manufacturing comprising machining an air inlet throat at the air inlet opening, wherein the machined air inlet throat extends into the casting, and wherein a portion of the machined air inlet throat is radially symmetrical about a central axis, wherein the cross-section of the machined air inlet throat in a plane which passes through the central axis and the edge of the machined air inlet throat comprises a radiused profile.
8. A method of manufacturing as claimed in claim 7, wherein the casting comprises an exhaust outlet opening located in the combustion chamber, the method of manufacturing comprising machining an exhaust outlet throat at the exhaust outlet opening, wherein the machined exhaust outlet throat extends into the casting, and wherein a portion of the machined exhaust outlet throat is radially symmetrical about a second central axis, wherein the cross-section of the machined exhaust outlet throat in a plane which passes through the second central axis and the edge of the machined exhaust outlet throat comprises a radiused profile.
9. A method of manufacturing as claimed in claim 7 or claim 8, comprising applying a cladding to the machined air inlet throat, and/or the machined exhaust outlet throat where present, using a laser cladding process.
10. A method of manufacturing as claimed in claim 9, wherein the cladding is a Nickel Aluminium cladding, optionally comprising Chromium Carbide.
11. A method of manufacturing as claimed in claim 9 or claim 10, comprising using a laser hardening process after the laser cladding process.
12. A method of manufacturing as claimed in any one of claims 9 to 11, comprising removing a portion of the cladding in a second machining process to form a valve seat.
13. A method of manufacturing as claimed in any one of claims 7 to 12, wherein the casting comprises a cylinder head casting.
14. An internal combustion engine comprising a casting according to any one of claims 1 to 6.
15. A vehicle comprising an internal combustion engine according to claim 14.
GB2315305.9A 2021-03-26 2021-03-26 A casting for internal combustion engine Pending GB2620065A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2021/057922 WO2022199837A1 (en) 2021-03-26 2021-03-26 A casting for an internal combustion engine

Publications (1)

Publication Number Publication Date
GB2620065A true GB2620065A (en) 2023-12-27

Family

ID=75396711

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2315305.9A Pending GB2620065A (en) 2021-03-26 2021-03-26 A casting for internal combustion engine

Country Status (2)

Country Link
GB (1) GB2620065A (en)
WO (1) WO2022199837A1 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08224682A (en) * 1995-02-22 1996-09-03 Nissan Motor Co Ltd Method for machining valve seat in cylinder head
JPH10339117A (en) * 1997-06-05 1998-12-22 Nissan Motor Co Ltd Buildup valve seat of engine and manufacture therefor
JPH112154A (en) * 1997-06-12 1999-01-06 Nissan Motor Co Ltd Manufacture of padded valve seat, and cylinder head
DE10156196C1 (en) * 2001-11-15 2003-01-02 Daimler Chrysler Ag Production of a valve seat used for a cylinder head of internal combustion engine comprises fusing an additive material made from an alloy or a mixture of an aluminum-lead alloy and a further component at a certain point on a cylinder head
JP2010230315A (en) * 2009-03-25 2010-10-14 Honda Motor Co Ltd Internal inspection method of laser clad valve seat
US20180272472A1 (en) * 2017-03-22 2018-09-27 Toyota Jidosha Kabushiki Kaisha Method of producing clad layer and device for producing the same

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3285235A (en) 1964-12-24 1966-11-15 Gen Electric Valve seat insert
JPS62150014A (en) 1985-12-25 1987-07-04 Toyota Motor Corp Valve seatless cylinder head made of aluminum alloy

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08224682A (en) * 1995-02-22 1996-09-03 Nissan Motor Co Ltd Method for machining valve seat in cylinder head
JPH10339117A (en) * 1997-06-05 1998-12-22 Nissan Motor Co Ltd Buildup valve seat of engine and manufacture therefor
JPH112154A (en) * 1997-06-12 1999-01-06 Nissan Motor Co Ltd Manufacture of padded valve seat, and cylinder head
DE10156196C1 (en) * 2001-11-15 2003-01-02 Daimler Chrysler Ag Production of a valve seat used for a cylinder head of internal combustion engine comprises fusing an additive material made from an alloy or a mixture of an aluminum-lead alloy and a further component at a certain point on a cylinder head
JP2010230315A (en) * 2009-03-25 2010-10-14 Honda Motor Co Ltd Internal inspection method of laser clad valve seat
US20180272472A1 (en) * 2017-03-22 2018-09-27 Toyota Jidosha Kabushiki Kaisha Method of producing clad layer and device for producing the same

Also Published As

Publication number Publication date
WO2022199837A1 (en) 2022-09-29

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