JPS5654909A - Intake valve lift change device - Google Patents

Intake valve lift change device

Info

Publication number
JPS5654909A
JPS5654909A JP13045679A JP13045679A JPS5654909A JP S5654909 A JPS5654909 A JP S5654909A JP 13045679 A JP13045679 A JP 13045679A JP 13045679 A JP13045679 A JP 13045679A JP S5654909 A JPS5654909 A JP S5654909A
Authority
JP
Japan
Prior art keywords
engine
intake valve
pressure oil
plunger
rocker arm
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
JP13045679A
Other languages
Japanese (ja)
Inventor
Yasushi Koyanagi
Teruo Isomura
Muneya Matsuo
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.)
Fuji Oozx Inc
Original Assignee
Fuji Valve 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 Fuji Valve Co Ltd filed Critical Fuji Valve Co Ltd
Priority to JP13045679A priority Critical patent/JPS5654909A/en
Publication of JPS5654909A publication Critical patent/JPS5654909A/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
    • F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Valve Device For Special Equipments (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)

Abstract

PURPOSE:To quietly and smoothly operate an engine of overhead cam shaft type, by providing mechanisms for automatically displacing a rocker arm and for contacting a valve stem to the rocker arm. CONSTITUTION:In a cylinder heat 1 of an engine, rocker arms 10a, 10b and an intake valve 43 are provided. When the engine is rotated at high speed, by the action of pressure oil in an upper pressure oil chamber K and lower pressure oil chamber M a belleville spring 52 is not bent, and this causes an end spherical surface 53' of a plunger 53 to be adapted to a stem end surface 43' of the intake valve 43 without a clearance. When the engine is operated at low speed, a piston 50 is pressed upward and a plunger 51 ia shifted downward. Then the belleville spring 52 keeps a contact between the spherical surface 53' and the end surface 43'. In this way, the level of engine noise can be lowered.
JP13045679A 1979-10-09 1979-10-09 Intake valve lift change device Pending JPS5654909A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13045679A JPS5654909A (en) 1979-10-09 1979-10-09 Intake valve lift change device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13045679A JPS5654909A (en) 1979-10-09 1979-10-09 Intake valve lift change device

Publications (1)

Publication Number Publication Date
JPS5654909A true JPS5654909A (en) 1981-05-15

Family

ID=15034665

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13045679A Pending JPS5654909A (en) 1979-10-09 1979-10-09 Intake valve lift change device

Country Status (1)

Country Link
JP (1) JPS5654909A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6132503U (en) * 1984-07-31 1986-02-27 いすゞ自動車株式会社 Hydraulic tappet structure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6132503U (en) * 1984-07-31 1986-02-27 いすゞ自動車株式会社 Hydraulic tappet structure

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