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EP0140674A3 - Lash adjuster with embedded wear face - Google Patents

Lash adjuster with embedded wear face Download PDF

Info

Publication number
EP0140674A3
EP0140674A3 EP84307313A EP84307313A EP0140674A3 EP 0140674 A3 EP0140674 A3 EP 0140674A3 EP 84307313 A EP84307313 A EP 84307313A EP 84307313 A EP84307313 A EP 84307313A EP 0140674 A3 EP0140674 A3 EP 0140674A3
Authority
EP
European Patent Office
Prior art keywords
steel
hub
lash adjuster
plunger
tappet
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.)
Withdrawn
Application number
EP84307313A
Other languages
German (de)
French (fr)
Other versions
EP0140674A2 (en
Inventor
Stephen Mark Buente
Michael Stephen Paar
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.)
Eaton Corp
Original Assignee
Eaton Corp
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 Eaton Corp filed Critical Eaton Corp
Publication of EP0140674A2 publication Critical patent/EP0140674A2/en
Publication of EP0140674A3 publication Critical patent/EP0140674A3/en
Withdrawn legal-status Critical Current

Links

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
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/20—Adjusting or compensating clearance
    • F01L1/22—Adjusting or compensating clearance automatically, e.g. mechanically
    • F01L1/24—Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically
    • F01L1/245—Hydraulic tappets
    • F01L1/25—Hydraulic tappets between cam and valve stem
    • 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
    • F02F7/00—Casings, e.g. crankcases or frames
    • F02F7/0085—Materials for constructing engines or their parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2251/00—Material properties
    • F05C2251/04—Thermal properties
    • F05C2251/042—Expansivity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2253/00—Other material characteristics; Treatment of material
    • F05C2253/16—Fibres

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)

Abstract

A bucket tappet (10) is provided for direct-acting valve gear having a molded body portion (46) formed of a lightweight material, preferably plastic, having a thermal expansion suit­ able for use in an aluminium engine head. The body of the tap­ pet includes a tubular wall (48), an inner tubular hub (52), and a transverse end wall (50) joining and supporting the hub within the outer tubular wall. The body of the tappet has a cam face member (54) formed of hardened material, preferably steel or iron-based, embedded therein for providing a cam contacting surface (22). A hydraulic lash adjusting piston/plunger assem­ bly (64) formed of steel is received within the tubular hub. Leakdown control surfaces (70) within the lash adjuster are formed on the mating interfaces between the steel piston (72) and plunger (66).
EP84307313A 1983-10-28 1984-10-24 Lash adjuster with embedded wear face Withdrawn EP0140674A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US54634783A 1983-10-28 1983-10-28
US546347 1983-10-28

Publications (2)

Publication Number Publication Date
EP0140674A2 EP0140674A2 (en) 1985-05-08
EP0140674A3 true EP0140674A3 (en) 1986-05-28

Family

ID=24180016

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84307313A Withdrawn EP0140674A3 (en) 1983-10-28 1984-10-24 Lash adjuster with embedded wear face

Country Status (2)

Country Link
EP (1) EP0140674A3 (en)
JP (1) JPS60122205A (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3507683A1 (en) * 1985-03-05 1986-09-11 Robert Bosch Gmbh, 7000 Stuttgart CUPS FOR VALVE DRIVES OF COMBUSTION ENGINES
JPH051605Y2 (en) * 1985-07-15 1993-01-18
DE3528432A1 (en) * 1985-08-08 1987-02-19 Motomak AUTOMATICALLY HYDRAULICALLY ADJUSTING VALVE
DE3628619A1 (en) * 1986-08-22 1988-03-03 Schaeffler Waelzlager Kg AUTOMATICALLY HYDRAULICALLY ADJUSTING VALVE
DE3639911A1 (en) * 1986-11-22 1988-06-01 Schaeffler Waelzlager Kg AUTOMATICALLY HYDRAULICALLY ADJUSTING VALVE
DE3919777C1 (en) * 1989-06-16 1990-06-21 Daimler-Benz Aktiengesellschaft, 7000 Stuttgart, De
DE4203897C2 (en) * 1992-02-11 1994-01-27 Freudenberg Carl Fa Hydraulic valve lash adjuster
DE4340035B4 (en) * 1992-12-10 2006-02-23 Ina-Schaeffler Kg Mechanical bucket tappet
DE9317325U1 (en) * 1993-11-12 1994-01-05 INA Wälzlager Schaeffler KG, 91074 Herzogenaurach Tappet for a valve train of an internal combustion engine

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE928744C (en) * 1949-12-20 1955-06-10 Adolf Roebig Valve lifters, especially for internal combustion engines
FR2129420A5 (en) * 1971-03-08 1972-10-27 Cigala & Bertinetti Sas
EP0030780A1 (en) * 1979-12-05 1981-06-24 Eaton Corporation Light weight tappet for direct-acting valve gear

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU6815674A (en) * 1973-04-23 1975-10-23 Union Carbide Corp Coating powders

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE928744C (en) * 1949-12-20 1955-06-10 Adolf Roebig Valve lifters, especially for internal combustion engines
FR2129420A5 (en) * 1971-03-08 1972-10-27 Cigala & Bertinetti Sas
EP0030780A1 (en) * 1979-12-05 1981-06-24 Eaton Corporation Light weight tappet for direct-acting valve gear

Also Published As

Publication number Publication date
JPS60122205A (en) 1985-06-29
EP0140674A2 (en) 1985-05-08

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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): DE FR GB IT

PUAL Search report despatched

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AK Designated contracting states

Kind code of ref document: A3

Designated state(s): DE FR GB IT

17P Request for examination filed

Effective date: 19861125

17Q First examination report despatched

Effective date: 19870507

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

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19880119

RIN1 Information on inventor provided before grant (corrected)

Inventor name: PAAR, MICHAEL STEPHEN

Inventor name: BUENTE, STEPHEN MARK