JPS54121317A - Valve lift varying mechanism for internal combustion engine - Google Patents

Valve lift varying mechanism for internal combustion engine

Info

Publication number
JPS54121317A
JPS54121317A JP2824878A JP2824878A JPS54121317A JP S54121317 A JPS54121317 A JP S54121317A JP 2824878 A JP2824878 A JP 2824878A JP 2824878 A JP2824878 A JP 2824878A JP S54121317 A JPS54121317 A JP S54121317A
Authority
JP
Japan
Prior art keywords
recess
buffer
cylinder
oil
columnar part
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
JP2824878A
Other languages
Japanese (ja)
Inventor
Masaaki Takizawa
Kazuo Takahashi
Noboru Matsubara
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.)
Toyota Motor Corp
Original Assignee
Toyota Motor 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 Toyota Motor Corp filed Critical Toyota Motor Corp
Priority to JP2824878A priority Critical patent/JPS54121317A/en
Publication of JPS54121317A publication Critical patent/JPS54121317A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To prevent impact noises and protect a valve seat from damage, by providing a disc flange on a cylinder for opening/closing a valve and by supplying buffer oil of a support portion for installing a hydraulic tappet fitted with the cylinder.
CONSTITUTION: The disc flange 54 is provided on the top of the inner cylinder 53 of the hydraulic tappet 50. The disc flange consists of a columnar part 54a and a conical part 54b extending from the bottom of the columnar part. A recess 22 is provided on the support portion 21. The columnar part 54a is tightly fitted in the recess. An oil reserve ring 26 is provided around the recess 22 to surely collect the oil. When the cylinder 53 is lifted, a buffer oil supply passage extending from a groove 27 to the recess 22 through a groove 56 is formed to fill the buffer oil in the recess. Thus, a smooth valve lift curve similar to a buffer curve shown by the full line is obtained to gradually raise the degree of the buffer action. When the cylinder 53 has reached the bottom deal center, a large buffer effect is produced.
COPYRIGHT: (C)1979,JPO&Japio
JP2824878A 1978-03-14 1978-03-14 Valve lift varying mechanism for internal combustion engine Pending JPS54121317A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2824878A JPS54121317A (en) 1978-03-14 1978-03-14 Valve lift varying mechanism for internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2824878A JPS54121317A (en) 1978-03-14 1978-03-14 Valve lift varying mechanism for internal combustion engine

Publications (1)

Publication Number Publication Date
JPS54121317A true JPS54121317A (en) 1979-09-20

Family

ID=12243270

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2824878A Pending JPS54121317A (en) 1978-03-14 1978-03-14 Valve lift varying mechanism for internal combustion engine

Country Status (1)

Country Link
JP (1) JPS54121317A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5451029A (en) * 1992-06-05 1995-09-19 Volkswagen Ag Variable valve control arrangement
WO2013118634A1 (en) * 2012-02-10 2013-08-15 アイシン精機株式会社 Lash adjuster

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5451029A (en) * 1992-06-05 1995-09-19 Volkswagen Ag Variable valve control arrangement
WO2013118634A1 (en) * 2012-02-10 2013-08-15 アイシン精機株式会社 Lash adjuster
CN104114822A (en) * 2012-02-10 2014-10-22 爱信精机株式会社 Lash adjuster
JPWO2013118634A1 (en) * 2012-02-10 2015-05-11 アイシン精機株式会社 Rush adjuster
US9157338B2 (en) 2012-02-10 2015-10-13 Aisin Seiki Kabushiki Kaisha Lash adjuster
CN104114822B (en) * 2012-02-10 2016-10-12 爱信精机株式会社 Clearance adjuster

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