US3581728A - Grooved valve stem guide - Google Patents

Grooved valve stem guide Download PDF

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Publication number
US3581728A
US3581728A US12318A US3581728DA US3581728A US 3581728 A US3581728 A US 3581728A US 12318 A US12318 A US 12318A US 3581728D A US3581728D A US 3581728DA US 3581728 A US3581728 A US 3581728A
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US
United States
Prior art keywords
groove
guide
valve stem
oil
stem
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
US12318A
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English (en)
Inventor
John C Abraham
Alexander Goloff
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.)
Caterpillar Inc
Original Assignee
Caterpillar Tractor Co
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 Caterpillar Tractor Co filed Critical Caterpillar Tractor Co
Application granted granted Critical
Publication of US3581728A publication Critical patent/US3581728A/en
Assigned to CATERPILLAR INC., A CORP. OF DE. reassignment CATERPILLAR INC., A CORP. OF DE. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: CATERPILLAR TRACTOR CO., A CORP. OF CALIF.
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
    • F01L3/08—Valves guides; Sealing of valve stem, e.g. sealing by lubricant

Definitions

  • FIG. l is a fragmentary view of a part of an engine head and blocked with a passage leading from the combustion chamber of a cylinder (not shown), a valve closing the passage and a valve stem guide embodying the present invention.
  • FIG. 2 is an enlarged fragmentary view showing a portion of the valve stem and a portion of the guide and illustrating the configuration of grooves made in accordance with the present invention.
  • FIGS. 3 and.4 are views in elevation and partially in section of two types of taps which may be employed for cutting the grooves of the present invention in the valve stem guide.
  • FIG. l of the drawings a portion of the head of an internal combustion engine is shown at as having a passage l2 closed by a valve I4.
  • the passage l2 may be an intake passage for air or a fuel-air or other combustible mixture to be ignited in the engine combustion chamber which underlies the valve 14, or it may be a passage for exhaust gas emitted from the combustion chamber. While it is true that the exhaust valve is subjected to higher temperatures and generally more strenuous service, the invention is capable of use with either intake or exhaust valves.
  • the valve 14 is shown as having a stem 16 reciprocably mounted in a valve stem guide 18 which is fitted in a suitable bore in the cylinder head.
  • the valve is generally spring closed and opened by a cam action in a conventional and well-known manner.
  • Lubricant between the stem and the guide is also conventionally provided from above and f'lows down the stem to enter the upper end of the guide.
  • Various types of grooves have been provided to feed lubricant throughout the length of the guide and insure its presence between the bearing or sliding surfaces of the stem and guide.
  • One method of forming a groove has been with the use of a tap or tool, similar to a tap such as is used in cutting a female thread in a bore into which a male thread is to be fitted.
  • the thread or groove follows a spiral path and each tum is sufficiently spaced from the next to provide lands or bearing areas between the turns.
  • two grooves are cut to form parallel spiral paths on the inner wall of the valve guide.
  • Such grooves are shown generally at 20 in FIG. l and are enlarged in FIG. 2 where they appear as alternate triangular cross section grooves 22 and smaller truncated triangular cross section grooves 24.
  • the larger grooves 22 serve, as explained above, to provide a passage for the relatively free flow of oil throughout the length of the stem guide.
  • the smaller grooves are provided to insure that an oil film is formed and maintained throughout the length of the guide and that portion of the valve stem which slides within it. This oil film is built up because of the reciprocating motion of the valve stem.
  • FIGS. 3 and 4 Two types of taps with which the groove pattern of FIGS. 1 and 2 can be successfully cut are shown in FIGS. 3 and 4.
  • the tap of FIG. 3 is known as a tandem tap wherein the lower portion or that portion first entering the bore to be tapped is provided with one type of tooth, in this case, teeth 24a of truncated form for cutting the grooves 24 of FIG. 2.
  • teeth 24a of truncated form for cutting the grooves 24 of FIG. 2.
  • Following this portion of the tap and generally separated therefrom as by a groove 26 is a portion having teeth of triangular cross section as illustrated at 22a for cutting grooves like those illustrated at 22 in FIG. 2.
  • double-start or double-thread tap has two sets of cutter teeth which are arranged to cut parallel spiral grooves at the same time, one set comprising teeth 24b, the other comprising teeth 22h so that teeth such as shown at 24 and 22 in FIG. 2 are formed simultaneously as the tap advances through the bore.
  • the present invention allows much closer fits with a minimum of 0.0002 inch or even less and lubrication and wear characteristics are improved.
  • a valve stem guide for use in a combustion engine having two parallel spiral grooves cut along its inner cylindrical surface, the grooves being spaced apart and completely disposed radially outwardly of the cylindrical surface to form bearing surfaces therebetween with the bearing surfaces being of constant diametrical dimension along the inner cylindrical surface, one groove being larger and deeper than the other groove to provide adequate oil supply throughout the length of the guide, the other groove functioning to maintain an oil film upon the bearing surfaces.
  • valve stem guide of claim l in which the deeper groove is of triangular cross section and the other groove is of truncated triangular cross section.
  • valve stem guide of claim l in which the other groove is selectively sized so that its lower end tends to be closed by carbon deposition from hot exhaust gases, the closure restricting the downward flow of oil from the other groove.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Soil Working Implements (AREA)
US12318A 1970-02-18 1970-02-18 Grooved valve stem guide Expired - Lifetime US3581728A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US1231870A 1970-02-18 1970-02-18

Publications (1)

Publication Number Publication Date
US3581728A true US3581728A (en) 1971-06-01

Family

ID=21754393

Family Applications (1)

Application Number Title Priority Date Filing Date
US12318A Expired - Lifetime US3581728A (en) 1970-02-18 1970-02-18 Grooved valve stem guide

Country Status (9)

Country Link
US (1) US3581728A (ja)
JP (1) JPS5341288B2 (ja)
BE (1) BE762969A (ja)
BR (1) BR7101075D0 (ja)
CA (1) CA920900A (ja)
DE (1) DE2106184C3 (ja)
FR (1) FR2078676A5 (ja)
GB (1) GB1300882A (ja)
ZA (1) ZA71541B (ja)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3944301A (en) * 1973-10-20 1976-03-16 Erich Roemer Lubricating pocket
US4088300A (en) * 1975-10-08 1978-05-09 Kureha Kagaku Kogyo Kabushiki Kaisha Flow control valve for hot pitch or other viscous material
US4103662A (en) * 1976-09-02 1978-08-01 K-Line Industries, Inc. Insert for rebuilding valve guides
US4768479A (en) * 1987-02-25 1988-09-06 K-Line Industries, Inc. Oil-sealing valve guide insert and method of manufacture
US4892289A (en) * 1981-12-23 1990-01-09 Crucible Societe Anonyme Letdown valves
US5465691A (en) * 1995-03-08 1995-11-14 Capaldo; Richard G. Valve guide
US5632171A (en) * 1996-02-01 1997-05-27 Reynolds Metals Company Ironing press laminar flow lubrication ring
US5662078A (en) * 1994-10-26 1997-09-02 Fuji Oozx Inc. Intake valve device for preventing adhesion of deposits
US5715911A (en) * 1996-03-22 1998-02-10 Reynolds Metals Company Laminar flow lubrication
US5890700A (en) * 1997-07-29 1999-04-06 The Clarkson Company Gate valve
US6283389B1 (en) * 1998-09-22 2001-09-04 Robert Bosch Gmbh Fuel injection valve for internal combustion engines
US6382592B1 (en) * 2000-09-05 2002-05-07 Jong Wok Kim Valve
CN104632316A (zh) * 2013-11-13 2015-05-20 北京汽车动力总成有限公司 发动机气门导管及总成
US20170064804A1 (en) * 2015-08-28 2017-03-02 Lincoln Global, Inc. Plasma torch and components thereof
US10145462B2 (en) * 2016-08-25 2018-12-04 Hamilton Sundstrand Corporation Shaft internal lubrication with rifling grooves
US10480364B2 (en) 2017-09-07 2019-11-19 Ford Global Technologies, Llc Valve shield for an internal combustion engine

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50149742U (ja) * 1974-05-29 1975-12-12
JPS624643Y2 (ja) * 1978-06-20 1987-02-03
JPS5525682U (ja) * 1978-08-09 1980-02-19
US5375812A (en) * 1993-12-06 1994-12-27 Abb Vetco Gray Inc. Dynamic metal-to-metal seal
GB2310249B (en) * 1996-02-13 1999-09-08 Rover Group A valve and valve guide assembly for an internal combustion engine
EP0802307B1 (en) * 1996-04-11 1998-07-08 Fuji Oozx Inc. Intake valve device for preventing adhesion of deposits
JP4566132B2 (ja) 2003-12-22 2010-10-20 本田技研工業株式会社 筒状部材の成形方法
DE102005035034B4 (de) * 2005-07-27 2007-05-31 Alois Dotzer Dieselmotorisch betriebene Brennkraftmaschine
CN106870050A (zh) * 2017-03-30 2017-06-20 广西玉柴机器股份有限公司 气门导管

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1125725A (en) * 1914-08-01 1915-01-19 Siegfried Rosenzweig Lubricating device for steam-engine valves.
US1569455A (en) * 1924-12-29 1926-01-12 James B Burwell Valve
US1599172A (en) * 1925-06-22 1926-09-07 Harold C Goodbrake Valve-stem oiler
US1642156A (en) * 1923-11-19 1927-09-13 V B Fitts Valve mechanism for internal-combustion engines
US1689319A (en) * 1923-04-13 1928-10-30 Bonner Charter Corp Lubricating means
US1876160A (en) * 1931-11-16 1932-09-06 Victor F Zahodiakin Internal combustion engine valve
US1938042A (en) * 1933-07-28 1933-12-05 Robinson John Francis Engine valve lubricating means
US2069745A (en) * 1933-02-20 1937-02-09 Philip H Allen Engine

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1125725A (en) * 1914-08-01 1915-01-19 Siegfried Rosenzweig Lubricating device for steam-engine valves.
US1689319A (en) * 1923-04-13 1928-10-30 Bonner Charter Corp Lubricating means
US1642156A (en) * 1923-11-19 1927-09-13 V B Fitts Valve mechanism for internal-combustion engines
US1569455A (en) * 1924-12-29 1926-01-12 James B Burwell Valve
US1599172A (en) * 1925-06-22 1926-09-07 Harold C Goodbrake Valve-stem oiler
US1876160A (en) * 1931-11-16 1932-09-06 Victor F Zahodiakin Internal combustion engine valve
US2069745A (en) * 1933-02-20 1937-02-09 Philip H Allen Engine
US1938042A (en) * 1933-07-28 1933-12-05 Robinson John Francis Engine valve lubricating means

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3944301A (en) * 1973-10-20 1976-03-16 Erich Roemer Lubricating pocket
US4088300A (en) * 1975-10-08 1978-05-09 Kureha Kagaku Kogyo Kabushiki Kaisha Flow control valve for hot pitch or other viscous material
US4103662A (en) * 1976-09-02 1978-08-01 K-Line Industries, Inc. Insert for rebuilding valve guides
US4892289A (en) * 1981-12-23 1990-01-09 Crucible Societe Anonyme Letdown valves
US4768479A (en) * 1987-02-25 1988-09-06 K-Line Industries, Inc. Oil-sealing valve guide insert and method of manufacture
US5662078A (en) * 1994-10-26 1997-09-02 Fuji Oozx Inc. Intake valve device for preventing adhesion of deposits
US5465691A (en) * 1995-03-08 1995-11-14 Capaldo; Richard G. Valve guide
US5632171A (en) * 1996-02-01 1997-05-27 Reynolds Metals Company Ironing press laminar flow lubrication ring
US5715911A (en) * 1996-03-22 1998-02-10 Reynolds Metals Company Laminar flow lubrication
US5890700A (en) * 1997-07-29 1999-04-06 The Clarkson Company Gate valve
US6283389B1 (en) * 1998-09-22 2001-09-04 Robert Bosch Gmbh Fuel injection valve for internal combustion engines
US6382592B1 (en) * 2000-09-05 2002-05-07 Jong Wok Kim Valve
CN104632316A (zh) * 2013-11-13 2015-05-20 北京汽车动力总成有限公司 发动机气门导管及总成
US20170064804A1 (en) * 2015-08-28 2017-03-02 Lincoln Global, Inc. Plasma torch and components thereof
JP2017045727A (ja) * 2015-08-28 2017-03-02 リンカーン グローバル， インコーポレイテッドＬｉｎｃｏｌｎ Ｇｌｏｂａｌ， Ｉｎｃ． プラズマトーチおよびその構成要素
CN106488640A (zh) * 2015-08-28 2017-03-08 林肯环球股份有限公司 等离子焊炬及其部件
US10863610B2 (en) * 2015-08-28 2020-12-08 Lincoln Global, Inc. Plasma torch and components thereof
US10145462B2 (en) * 2016-08-25 2018-12-04 Hamilton Sundstrand Corporation Shaft internal lubrication with rifling grooves
US10969000B2 (en) * 2016-08-25 2021-04-06 Hamilton Sundstrand Corporation Shaft internal lubrication with rifling grooves
US10480364B2 (en) 2017-09-07 2019-11-19 Ford Global Technologies, Llc Valve shield for an internal combustion engine

Also Published As

Publication number Publication date
GB1300882A (en) 1972-12-20
JPS5341288B2 (ja) 1978-11-01
FR2078676A5 (ja) 1971-11-05
DE2106184C3 (de) 1980-12-04
ZA71541B (en) 1971-10-27
DE2106184A1 (de) 1971-09-16
CA920900A (en) 1973-02-13
DE2106184B2 (de) 1980-03-27
BR7101075D0 (pt) 1973-04-12
JPS461254A (ja) 1971-09-17
BE762969A (fr) 1971-08-16

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Legal Events

Date Code Title Description
AS Assignment

Owner name: CATERPILLAR INC., A CORP. OF DE.,ILLINOIS

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:CATERPILLAR TRACTOR CO., A CORP. OF CALIF.;REEL/FRAME:004669/0905

Effective date: 19860515

Owner name: CATERPILLAR INC., 100 N.E. ADAMS STREET, PEORIA, I

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:CATERPILLAR TRACTOR CO., A CORP. OF CALIF.;REEL/FRAME:004669/0905

Effective date: 19860515