US3868953A - Valve seat ring for the fastening in cylinder heads of internal combustion engines - Google Patents

Valve seat ring for the fastening in cylinder heads of internal combustion engines Download PDF

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Publication number
US3868953A
US3868953A US317780A US31778072A US3868953A US 3868953 A US3868953 A US 3868953A US 317780 A US317780 A US 317780A US 31778072 A US31778072 A US 31778072A US 3868953 A US3868953 A US 3868953A
Authority
US
United States
Prior art keywords
valve seat
seat ring
self
thread
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.)
Expired - Lifetime
Application number
US317780A
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English (en)
Inventor
Walter Roll
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.)
Daimler Benz AG
Original Assignee
Daimler Benz AG
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 Daimler Benz AG filed Critical Daimler Benz AG
Application granted granted Critical
Publication of US3868953A publication Critical patent/US3868953A/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49229—Prime mover or fluid pump making
    • Y10T29/49298—Poppet or I.C. engine valve or valve seat making
    • Y10T29/49306—Valve seat making

Definitions

  • ABSTRACT A valve seat ring to be fastened in cylinder heads of internal combustion engines which includes a selftapping thread by means of which the valve seat ring is secured in the material of the cylinder head.
  • the present invention relates to a valve seat ring for purposes of fastening thereof in cylinder heads of internal combustion engines In cylinder heads of internal combustion engines, a
  • valve seat ring by forcing-in or pressing-in the valve seat ring, which is relatively expensive, but assures on the other hand that a connection between the valve seat rings and the material of the cylinder heads is attained which is favorable as regards the heat transfer.
  • a secure seating of the pressed-in valve seat rings no longer exists with certainty if the internal combustion engine is constructed as high-power internal combustion en gine and the cylinder head is thermally highly loaded or stressed.
  • the present invention is concerned with the task to provide a fastening which can be established easily, enables a good heat transfer and does not allow a disengagement under thermal load.
  • valve seat ring is provided with a self-cutting or self-tapping thread.
  • a valve seat ring provided with a self-tapping or selfcutting thread can be tapped or screwed-in readily in case of cylinder heads made of aluminum or gray cast iron, or also of steel.
  • the heat transfer between a valve seat ring secured and fastened in such a manner and the remaining material of the cylinder head differs only insignificantly from that with a pressed-in or forced-in valve seat ring and at any rate is far more favorable than with a valve seat ring that is inserted with a normal thread.
  • a-valve seat ring fastened by means of a self-tapping or self-cutting thread can be exchanged in case of need. Its manufacture is not expensive and the installation not cumbersome.
  • the outer diameter of the self-cutting or self-tapping thread may be constructed tapering conically at the valve seat ring in the screw-in direction in order that during the insertion in the manner of a thread-cutting bolt, at first only very little material is cut away from the cylinder head and a safe guidance is assured.
  • a groove for chips or shavings may be provided at the valve seat ring which extends in the circumferential direction. Furthermore, several cutting edges extending in the axial direction and interrupting the thread may be provided which enhance the insertion of the valve seat ring and serve as additional chip or shaving grooves.
  • grooves may be provided at the valve seat ring which are disposed mutually opposite along an inner diameter and extend in the axial direction.
  • valve seat ring to be fastened in cylinder heads of internal combustion engines which avoids by simple means the aforementioned shortcomings and drawbacks encountered in the prior art.
  • Another object of the present invention resides in a valve seat ring which can be readily installed in cylinder heads of internal combustion engines without cumbersome and expensive operations, yet assures a completely satisfactory heat transfer between the valve seat ring and the material of the cylinder head.
  • a further object of the present invention resides in a valve seat ring for internal combustion engines which guarantees a completely satisfactory performance even in case of a design of the engine as high power internal combustion engine with thermally very highly loaded cylinder heads.
  • Another object of the present invention resides in a valve seating ring which enables a fastening thereof in the cylinder head that permits an inexpensive, easy manufacture, a good heat transfer and a possible exchange in case of need.
  • a further object of the present invention resides in a valve seat ring which assures a proper connection with the cylinder head even when the cylinder head is thermally highly stressed.
  • FIG. 1 is a partial cross-sectional view through a cylinder head of an internal combustion engine
  • FIG. 2 is an axial cross-sectional view, on an enlarged scale, through a valve seat ring in accordance with the present invention.
  • FIG. 3 is an elevational view of the valve seat ring taken in the direction of arrow III of FIG. 2.
  • reference numeral 1 designates in this figure a cylinder head consisting of aluminum, gray cast iron, or steel of an internal combustion engine of otherwise conventional construction.
  • a valve seat ring 4 consisting of hardened steel of any conventional type is arranged in the cylinder head 1 at the orifice of a gas exchange channel 2 at the cylinder head bottom 3 for forming a valve seat for the disk of a valve.
  • the valve seat ring 4 of the present invention is secured by screw-in action by means of a self-cutting or self-tapping thread 5.
  • the outer diameter of the self-tapping or self-cutting thread 5 is constructed tapering conically in the screw-in direction.
  • a circumferentially extending groove 6 for chips or shavings which is arranged within the area of the forward screw-in end serves for the accommodation of shavings or chips cut away during the screw-in operation from the material of the cylinder head 1.
  • Four cutting edges 7 extending in the axial direction condition the cutting operation. Additionally, the recesses in front of these cutting edges contribute to the removal of the chips or shavings.
  • grooves 8 are provided which are disposed opposite one another along an inner diameter and extend in the axial direction.
  • a valve seat ring for fastening in cylinder heads of internal combustion engines characterized by the arrangement of a self-cutting thread at the valve seat ring, the self-cutting thread includes at least one cutting edge which extends in the axial direction of the valve seat ring.
  • valve seat ring according to claim 1, characterized in that the outer diameter of the self-cutting thread is constructed tapering conically in the screw-in direction.
  • a valve seat ring for fastening in cylinder heads of internal combustion engines characterized by the arrangement of a self-cutting thread at the valve seat ring, the outer diameter of the self-cutting thread is constructed tapering conically in the screw-in direction and in that a groove for shavings is provided in the valve seat ring, which extends in the circumferential direction.
  • a valve seat ring for fastening in cylinder heads of internal combustion engines characterized by the arrangement of a self-cutting thread at the valve seat ring, and characterized in that the outer diameter of the self cutting thread is constructed tapering conically in the screw-in direction, a groove for shavings extending in the circumferential direction is provided in the valve seat ring and in that several cutting edges are provided which extend in the axial direction and interrupt the thread.
  • a valve seat ring according to claim 4 characterized in that grooves are provided for the engagement of a work tool which are disposed mutually opposite along an inner diameter and extend essentially in the axial direction.
  • a valve seat ring for fastening in cylinder heads of internal combustion engines characterized by the arrangement of a self-cutting thread at the valve seat ring, and in that a groove for shavings is provided in the valve seat ring, which extends in the circumferential direction.
  • a valve seat ring for fastening in cylinder heads of internal combustion engines characterized by the arrangement of self-cutting thread at the valve seat ring, and characterized in that several cutting edges are pro vided which extend in the axial direction and interrupt the thread.
  • a valve seat ring according to claim 1 characterized in that grooves are provided for the engagement of a work tool which are disposed mutually opposite along an inner diameter and extend essentially in the axial direction.
  • a valve seat ring for fastening in cylinder heads of internal combustion engines characterized by the arrangement of a self-cutting thread at the valve seat ring, and characterized in that a groove for shavings is provided in the valve seat ring, which extends in the circumferential direction, and in that several cutting edges are provided which extend in the axial direction and interrupt the thread.
  • a valve seat ring for fastening in cylinder heads of internal combustion engines characterized by the arrangement of a self-cutting thread at the valve seat ring, a groove for shavings is provided in the valve seat ring, which extends in the circumferential direction, and in that grooves are provided for the engagement of a work tool which are disposed mutually opposite along an inner diameter and which extend essentially in the axial direction.
  • valve seat arrangement for an internal combustion engine, the valve seat arrangement comprising: a valve seat ring, a bore means provided in the cylinder head for receiving said'valve seat ring, said bore means including a smooth peripheral wall portion, and self-cutting thread means provided on said valve seat ring for threadably fastening said valve seat ring in said smooth peripheral wall portion of said bore means, said self'cutting thread means including at least one cutting edge extending in the axial direction of the valve seat ring.
  • valve seat arrangement for an internal combustion engine, the valve seat arrangement comprising: a valve seat ring means, a bore means provided in the cylinder head for receiving said valve seat ring, said bore means including a smooth peripheral wall portion, self-cutting thread means provided on said valve seat ring for threadably fastening said valve seat ring in said smooth peripheral wall portion of said bore means, and additional cutting means provided on said valve seat ring for conditioning said bore means for said self-cutting thread means.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
US317780A 1971-12-23 1972-12-22 Valve seat ring for the fastening in cylinder heads of internal combustion engines Expired - Lifetime US3868953A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2164357A DE2164357B2 (de) 1971-12-23 1971-12-23 Ventilsitzring mit einem Gewinde zum Einschrauben in einen Zylinderkopf einer Brennkraftmaschine

Publications (1)

Publication Number Publication Date
US3868953A true US3868953A (en) 1975-03-04

Family

ID=5829095

Family Applications (1)

Application Number Title Priority Date Filing Date
US317780A Expired - Lifetime US3868953A (en) 1971-12-23 1972-12-22 Valve seat ring for the fastening in cylinder heads of internal combustion engines

Country Status (6)

Country Link
US (1) US3868953A (enrdf_load_stackoverflow)
JP (1) JPS4868911A (enrdf_load_stackoverflow)
DE (1) DE2164357B2 (enrdf_load_stackoverflow)
FR (1) FR2165646A5 (enrdf_load_stackoverflow)
GB (1) GB1362109A (enrdf_load_stackoverflow)
IT (1) IT974860B (enrdf_load_stackoverflow)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3963016A (en) * 1974-01-29 1976-06-15 Societe D'etudes De Machines Thermiques - S.E.M.T.E. Valve chests
US4011852A (en) * 1974-02-16 1977-03-15 Maschinenfabrik Augsburg-Nurnberg Ag Cylinder head for internal combustion engines
US4108132A (en) * 1975-11-10 1978-08-22 Nissan Motor Company, Limited Internal combustion engine having an improved inlet valve arrangement
US4236495A (en) * 1978-10-13 1980-12-02 Rosan, Inc. Self locking valve seat insert
US4676482A (en) * 1986-04-28 1987-06-30 Rexnord Inc. Valve seat insert
US4831976A (en) * 1987-02-02 1989-05-23 General Motors Corporation Engine with valve seat inserts and method of retaining
US6260531B1 (en) 2000-03-30 2001-07-17 Ford Global Tech., Inc. Valve seat insert
EP1231011A3 (en) * 2001-02-08 2004-03-10 Kabushiki Kaisha Toyota Jidoshokki Bonding structure of valve seat and method of making the same
US20040084005A1 (en) * 2000-08-14 2004-05-06 Satoru Goto Cylinder head
US20100236533A1 (en) * 2009-03-23 2010-09-23 Riccardo Meldolesi Valve Seat Insert for a Split-Cycle Engine
GB2496446A (en) * 2011-11-11 2013-05-15 Lewmar Ltd Self-tailing winch
US8820720B2 (en) 2011-11-11 2014-09-02 Lewmar Limited Winch
US20160333751A1 (en) * 2015-05-07 2016-11-17 Frank J. Ardezzone Engine Insert and Process for Installing

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2963649D1 (en) * 1979-02-05 1982-10-28 Rosan Inc Self locking valve seat insert
JPS57126510A (en) * 1981-01-30 1982-08-06 Hino Motors Ltd Valve seat for internal combustion engine
IT1155320B (it) * 1982-04-22 1987-01-28 Fiat Auto Spa Metodo per l'ottenimento di una sede valvola su una testata di un motore endotermico e motore con sedi valvola ottenute con tale metodo
DE4141100A1 (de) * 1991-12-13 1993-06-17 Audi Ag Verfahren zum einsetzen eines ventilsitzringes

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1724036A (en) * 1927-02-12 1929-08-13 Edward P Mooers Valve seat for internal-combustion engines
US1958004A (en) * 1931-04-20 1934-05-08 White Motor Co Internal combustion engine and similar machine

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4813292U (enrdf_load_stackoverflow) * 1971-06-30 1973-02-14

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1724036A (en) * 1927-02-12 1929-08-13 Edward P Mooers Valve seat for internal-combustion engines
US1958004A (en) * 1931-04-20 1934-05-08 White Motor Co Internal combustion engine and similar machine

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3963016A (en) * 1974-01-29 1976-06-15 Societe D'etudes De Machines Thermiques - S.E.M.T.E. Valve chests
US4011852A (en) * 1974-02-16 1977-03-15 Maschinenfabrik Augsburg-Nurnberg Ag Cylinder head for internal combustion engines
US4108132A (en) * 1975-11-10 1978-08-22 Nissan Motor Company, Limited Internal combustion engine having an improved inlet valve arrangement
US4236495A (en) * 1978-10-13 1980-12-02 Rosan, Inc. Self locking valve seat insert
US4676482A (en) * 1986-04-28 1987-06-30 Rexnord Inc. Valve seat insert
US4831976A (en) * 1987-02-02 1989-05-23 General Motors Corporation Engine with valve seat inserts and method of retaining
US6260531B1 (en) 2000-03-30 2001-07-17 Ford Global Tech., Inc. Valve seat insert
US20040084005A1 (en) * 2000-08-14 2004-05-06 Satoru Goto Cylinder head
US7066131B2 (en) * 2000-08-14 2006-06-27 Niigata Power Systems Co., Ltd. Cylinder head
EP1231011A3 (en) * 2001-02-08 2004-03-10 Kabushiki Kaisha Toyota Jidoshokki Bonding structure of valve seat and method of making the same
US20100236533A1 (en) * 2009-03-23 2010-09-23 Riccardo Meldolesi Valve Seat Insert for a Split-Cycle Engine
GB2496446A (en) * 2011-11-11 2013-05-15 Lewmar Ltd Self-tailing winch
US8820720B2 (en) 2011-11-11 2014-09-02 Lewmar Limited Winch
GB2496446B (en) * 2011-11-11 2014-12-31 Lewmar Ltd Winch
US9061870B2 (en) 2011-11-11 2015-06-23 Lewmar Limited Winch
US20160333751A1 (en) * 2015-05-07 2016-11-17 Frank J. Ardezzone Engine Insert and Process for Installing

Also Published As

Publication number Publication date
FR2165646A5 (enrdf_load_stackoverflow) 1973-08-03
GB1362109A (en) 1974-07-30
DE2164357A1 (de) 1973-06-28
JPS4868911A (enrdf_load_stackoverflow) 1973-09-19
IT974860B (it) 1974-07-10
DE2164357B2 (de) 1980-08-28

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