EP0014285B1 - Self locking valve seat insert - Google Patents

Self locking valve seat insert Download PDF

Info

Publication number
EP0014285B1
EP0014285B1 EP79302609A EP79302609A EP0014285B1 EP 0014285 B1 EP0014285 B1 EP 0014285B1 EP 79302609 A EP79302609 A EP 79302609A EP 79302609 A EP79302609 A EP 79302609A EP 0014285 B1 EP0014285 B1 EP 0014285B1
Authority
EP
European Patent Office
Prior art keywords
valve seat
flange
seat insert
locking
metal
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.)
Expired
Application number
EP79302609A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0014285A1 (en
Inventor
José Rosán Jr.
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.)
ROSAN Inc
Original Assignee
ROSAN Inc
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 ROSAN Inc filed Critical ROSAN Inc
Publication of EP0014285A1 publication Critical patent/EP0014285A1/en
Application granted granted Critical
Publication of EP0014285B1 publication Critical patent/EP0014285B1/en
Expired legal-status Critical Current

Links

Images

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
    • F01L3/22—Valve-seats not provided for in preceding subgroups of this group; Fixing of valve-seats

Definitions

  • the present invention accomplishes these objects and others by providing a valve seat insert with a pilot flange to guide the insert into a. prebored hole in the cylinder head into which it snugly fits.
  • a locking flange is provided of greater diameter than the pilot flange and the prebored hole.
  • the locking flange contains longitudinal serrations around the circumference thereof and a forming edge.
  • One shoulder of the locking flange and a shoulder of the pilot flange define an annular groove into which displaced metal is packed.
  • the serrations may be omitted from the locking flange.
  • the locking flange shoulder by swaging metal into the annular groove forms a metal to metal lock preventing axial movement and resisting rotational movement.
  • a cylindrical ring 10 has a valve seat 19 formed in its upper face 16. Pilot flange 11 designed to guide the ring 10 into a prebored hole in cylinder head 20, is formed in the lower portion of ring 10.
  • Lead edge 12 is beveled towards the lower face 17 to facilitate entry into the prebored hole.
  • a locking flange 13 greater in diameter than pilot flange 11 has a forming shoulder 14- opposite the valve seat face, the purpose of which will be clearly described below.
  • the circumference of locking flange 13 is processed to form longitudinal serrations 18. Between pilot flange 11 and locking flange 13 an annular groove 15 is formed by the shoulders of the two flanges.
  • the self locking valve seat insert is installed by first drilling a straight sided hole in the cylinder head 20 with a diameter adapted to snugly accept the pilot flange 11. Fitting 10 is placed above the prebored hole. Pilot flange 11 is inserted in the hole. Insertion pressure is then applied to valve seat face 16. Forming shoulder 14 displaces metal which flows into annular groove 15 forming a metal ring in the groove. Serrations 18 cut cooperating grooves in cylinder head 20 locking the valve seat 10 in place preventing radial movement.
  • the above device although simple in construction, fills a long established need and surprisingly provides a positively metal to metal lock resistant to high push out pressures.
  • the metal to metal lock also assures efficient heat transfer from valve seat to cylinder wall.
  • the above described self locking valve seat insert can be easily replaced in the event of valve seat failure.
  • the defective valve seat insert 10 is pushed out.
  • a new self locking valve seat insert with longer serrations 18 is then pressed in place to a depth greater by the increased length of the serrations 18. This will provide sufficient metal flow to pack in said groove 15 to lock the valve seat insert in place so as to resist axial push out.
  • the serrations 18 will mesh with the preformed grooves preventing radial movement.
  • the tight metal to metal lock will ensure excellent heat transfer between the valve seat insert and the cylinder head.
  • valve seat inserts having various different forms and sizes.
  • the serrations may be omitted from the locking flange.
  • the locking flange forming shoulder 14 is of appropriate diameter to flow the proper amount of material from cylinder head 20 so as to pack annular groove 15 with sufficient material so as to form a metal ring in the groove and resulting in a metal to metal lock which prevents axial movement and resists rotational movement.
  • the diameter of said locking flange 13 is not less than 0.125 mm (.005 of an inch) greater and not more than 0.375 mm (.015 of an inch) greater than the diameter of the pilot flange 11.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lift Valve (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
EP79302609A 1979-02-05 1979-11-16 Self locking valve seat insert Expired EP0014285B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US952779A 1979-02-05 1979-02-05
US9527 1979-02-05

Publications (2)

Publication Number Publication Date
EP0014285A1 EP0014285A1 (en) 1980-08-20
EP0014285B1 true EP0014285B1 (en) 1982-09-08

Family

ID=21738200

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79302609A Expired EP0014285B1 (en) 1979-02-05 1979-11-16 Self locking valve seat insert

Country Status (6)

Country Link
EP (1) EP0014285B1 (da)
JP (1) JPS5815603B2 (da)
BR (1) BR8000501A (da)
CA (1) CA1143234A (da)
DE (1) DE2963649D1 (da)
DK (1) DK46880A (da)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002081873A1 (de) * 2001-04-07 2002-10-17 Volkswagen Aktiengesellschaft Brennkraftmaschine mit direkteinspritzung und verfahren zum betreiben dieser

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101715522B (zh) * 2007-06-13 2013-07-31 Gkn烧结金属有限公司 对粉末金属部件公差的改进
JP5525858B2 (ja) * 2010-02-26 2014-06-18 株式会社フジキン ボール弁
JP7022607B2 (ja) * 2018-01-31 2022-02-18 日本ピストンリング株式会社 バルブシート、および、バルブシートとシリンダヘッドとの結合構造
CN112943404A (zh) * 2021-02-07 2021-06-11 浙江吉利控股集团有限公司 一种发动机气门座圈及甲醇发动机

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE710793C (de) * 1938-06-15 1941-09-22 Porsche Kg Ventilsitzring fuer Brennkraftmaschinen
GB1100403A (en) * 1965-03-17 1968-01-24 Mirrlees Nat Ltd Improvements in or relating to caged poppet valves for internal combustion engines
US3630252A (en) * 1970-04-27 1971-12-28 Rosan Eng Corp Stud fastener assembly with integral lockring
JPS4812806U (da) * 1971-06-22 1973-02-13
DE2164357B2 (de) * 1971-12-23 1980-08-28 Daimler-Benz Ag, 7000 Stuttgart Ventilsitzring mit einem Gewinde zum Einschrauben in einen Zylinderkopf einer Brennkraftmaschine
DE2548534C2 (de) * 1975-10-30 1985-04-04 Klöckner-Humboldt-Deutz AG, 5000 Köln Verbindung von Zylinderkopf und Zylinderrohr einer Brennkraftmaschine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002081873A1 (de) * 2001-04-07 2002-10-17 Volkswagen Aktiengesellschaft Brennkraftmaschine mit direkteinspritzung und verfahren zum betreiben dieser
CN1293287C (zh) * 2001-04-07 2007-01-03 大众汽车有限公司 直喷式内燃机及其工作方法

Also Published As

Publication number Publication date
DK46880A (da) 1980-08-06
EP0014285A1 (en) 1980-08-20
DE2963649D1 (en) 1982-10-28
CA1143234A (en) 1983-03-22
JPS5815603B2 (ja) 1983-03-26
BR8000501A (pt) 1980-10-14
JPS55107012A (en) 1980-08-16

Similar Documents

Publication Publication Date Title
US4236495A (en) Self locking valve seat insert
US4676482A (en) Valve seat insert
US4244330A (en) Engine cylinder liner having a mid stop
EP0467381B1 (en) Rapid coupling arrangement
CA2078945C (en) Leak proof drain plug construction
EP0072140A1 (en) Pistons with combustion bowl inserts
US2783811A (en) Externally threaded insert element and keyed locking ring therefor
EP0014285B1 (en) Self locking valve seat insert
US12049857B2 (en) Injector cup for engines apparatus and methods of use
US3046965A (en) Valve seat assembly
US2170015A (en) Internal combustion engine
US5197567A (en) Replacement drain hole closure
US3814136A (en) Pressure sealing casting plug
JP2003508683A (ja) 内燃機関のための燃料噴射弁
US3683873A (en) Spark plug hole construction and method
DE3624670A1 (de) Vorkammeranordnung fuer den einbau in eine zylinderkopfbohrung
US4502696A (en) Valve seal retainer with multiple diameter boot base
US3371697A (en) Threaded elements with locking keys
US4081890A (en) Method of forming an injector valve nut seal
US1905684A (en) Valve structure
EP0014799B1 (en) Selflocking valve guide
GB2310250A (en) Fuel injection valve for internal combustion engines
US2340566A (en) Method of installing valve port liners
USRE28844E (en) Valve assembly
US3249141A (en) Deformed locking thread with relieved areas

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT NL SE

17P Request for examination filed
ITF It: translation for a ep patent filed
GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): DE FR GB IT NL SE

REF Corresponds to:

Ref document number: 2963649

Country of ref document: DE

Date of ref document: 19821028

ET Fr: translation filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19901130

Year of fee payment: 12

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19920601

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
ITTA It: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19941014

Year of fee payment: 16

EAL Se: european patent in force in sweden

Ref document number: 79302609.7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19951117

EUG Se: european patent has lapsed

Ref document number: 79302609.7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19971021

Year of fee payment: 19

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19971027

Year of fee payment: 19

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19971029

Year of fee payment: 19

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19981116

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19981130

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19981116

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990730

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT