JPS57183506A - Valve switching system of internal combustion engine - Google Patents

Valve switching system of internal combustion engine

Info

Publication number
JPS57183506A
JPS57183506A JP56069599A JP6959981A JPS57183506A JP S57183506 A JPS57183506 A JP S57183506A JP 56069599 A JP56069599 A JP 56069599A JP 6959981 A JP6959981 A JP 6959981A JP S57183506 A JPS57183506 A JP S57183506A
Authority
JP
Japan
Prior art keywords
plug
pad
valve lifter
hole
tapped
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.)
Pending
Application number
JP56069599A
Other languages
Japanese (ja)
Inventor
Masaaki Suzuki
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.)
Yamaha Motor Co Ltd
Original Assignee
Yamaha Motor Co Ltd
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 Yamaha Motor Co Ltd filed Critical Yamaha Motor Co Ltd
Priority to JP56069599A priority Critical patent/JPS57183506A/en
Publication of JPS57183506A publication Critical patent/JPS57183506A/en
Pending 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
    • F01L1/12—Transmitting gear between valve drive and valve
    • F01L1/14—Tappets; Push rods
    • F01L1/143—Tappets; Push rods for use with overhead camshafts
    • 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
    • F01L1/205—Adjusting or compensating clearance by means of shims or the like
    • 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
    • F01L1/02—Valve drive
    • F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
    • F01L1/047—Camshafts
    • F01L1/053—Camshafts overhead type
    • F01L2001/0537—Double overhead camshafts [DOHC]
    • 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
    • F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
    • F01L13/0015—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
    • F01L2013/0089—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque with means for delaying valve closing
    • F01L2013/0094—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque with means for delaying valve closing with switchable clamp for keeping valve open
    • 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
    • F01L2303/00—Manufacturing of components used in valve arrangements
    • F01L2303/01—Tools for producing, mounting or adjusting, e.g. some part of the distribution

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)

Abstract

PURPOSE:To easly change a pad by providing a cylinder head with tapped holes and controlling upward sliding return of a valve lifter by means of a plug screwed into the tapped hole or a pin thrust through said hole. CONSTITUTION:Tapped holes 23, extending from the exterior side of a cylinder head 11 to each fitting hole 11a side, are provided. Each tapped hole 23 is extended toward the center of each valve lifter 31 and opened slightly above the head part of the valve lifter 31 at the time of its maximum travel of sliding. Further, a plug 25 is screwed into each tapped hole 23 through a washer 24 and an engagement part 25c at the tip of the plug 25 is provided so as to be positioned on the upper part of the outer periphery of the valve lifter 31 when the plug 25 is advanced by screwing. Since the lifter 31 does not make sliding return due to the control of the plug 25 even if a cam 22 is rotated, a space is formed between a pad 32 and a cam 22 at the time of changing the pad 32, replacement of the pad 32 may be facilitated accordingly.
JP56069599A 1981-05-08 1981-05-08 Valve switching system of internal combustion engine Pending JPS57183506A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56069599A JPS57183506A (en) 1981-05-08 1981-05-08 Valve switching system of internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56069599A JPS57183506A (en) 1981-05-08 1981-05-08 Valve switching system of internal combustion engine

Publications (1)

Publication Number Publication Date
JPS57183506A true JPS57183506A (en) 1982-11-11

Family

ID=13407456

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56069599A Pending JPS57183506A (en) 1981-05-08 1981-05-08 Valve switching system of internal combustion engine

Country Status (1)

Country Link
JP (1) JPS57183506A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6041504U (en) * 1983-08-31 1985-03-23 スズキ株式会社 4-stroke engine tappet lubrication system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6041504U (en) * 1983-08-31 1985-03-23 スズキ株式会社 4-stroke engine tappet lubrication system
JPH0355765Y2 (en) * 1983-08-31 1991-12-12

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