EP0014285B1 - Pièce de siège de soupape à antiblocage - Google Patents

Pièce de siège de soupape à antiblocage Download PDF

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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)
Other versions
EP0014285A1 (fr
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/fr
Application granted granted Critical
Publication of EP0014285B1 publication Critical patent/EP0014285B1/fr
Expired 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
    • F01L3/22—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.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lift Valve (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)

Claims (3)

1. Pièce rapportée à autoverrouillage formant siège de soupape et destinée à être placée dans la tête de cylindre d'un moteur, et comportant une bague métallique substantiellement cylindrique présentant, sur une face (16), un siège de soupape (19), caractérisée par le fait qu'elle comporte:
un rebord pilote (11) biseauté sur le bord (12) et formant la face opposée au siège de soupape (19);
un rebord de verrouillage (13) de diamètre supérieur à celui du rebord pilote (11 ), comportant le siège de soupape sur sa face supérieure (16) et un épaulement de formage (14) sur son bord inférieur;
une gorge annulaire (15) définie par le rebord pilote (11) et le rebord de verrouillage (13) et située entre ceux-ci; la matière formée à froid étant déplacée à partir de la tête de cylindre et refoulée dans la gorge annulaire par l'épaulement de formage pour fournir un verrouillage métal-métal.
2. Pièce rapportée à autoverrouillage formant siège de soupape selon la revendication 1, caractérisée par le fait que le diamètre dudit rebord de verrouillage (13) est supérieur au diamètre du rebord pilote (11) d'une quantité non inférieure à 0,125 mm (0,005 pouce) et non supérieure à 0,373 mm (0,015 pouce).
3. Pièce rapportée à autoverrouillage formant siège de soupape selon la revendication 1, caractérisée par le fait que le contour extérieur du rebord de verrouillage (13) présente des dentelures longitudinales (18).
EP79302609A 1979-02-05 1979-11-16 Pièce de siège de soupape à antiblocage Expired EP0014285B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US952779A 1979-02-05 1979-02-05
US9527 1995-12-28

Publications (2)

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

Family

ID=21738200

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79302609A Expired EP0014285B1 (fr) 1979-02-05 1979-11-16 Pièce de siège de soupape à antiblocage

Country Status (6)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002081873A1 (fr) * 2001-04-07 2002-10-17 Volkswagen Aktiengesellschaft Moteur a combustion interne a injection directe et procede pour le faire fonctionner

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8636264B2 (en) 2007-06-13 2014-01-28 Gkn Sinter Metals, Llc Powder metal component tolerance improvements
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 (fr) * 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 (fr) * 2001-04-07 2002-10-17 Volkswagen Aktiengesellschaft Moteur a combustion interne a injection directe et procede pour le faire fonctionner
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
DE2963649D1 (en) 1982-10-28
BR8000501A (pt) 1980-10-14
DK46880A (da) 1980-08-06
JPS55107012A (en) 1980-08-16
CA1143234A (fr) 1983-03-22
EP0014285A1 (fr) 1980-08-20
JPS5815603B2 (ja) 1983-03-26

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