Title:
VALVE SYSTEM FOR INTERNAL COMBUSTION ENGINE
Document Type and Number:
Japanese Patent JP3389070
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To suppress generation of wear at a contact part of a locker arm and the upper end surface of a valve, and improve durability.
SOLUTION: In a valve system for an internal combustion engine, a contact part of a locker arm 1 and the upper end surface of a valve 3 is subjected to rolling sliding contact or rolling contact so as to make sliding contact minimum. The contact surface of the locker arm 1 is formed to be a convexly curved surface having a prescribed curvature. When the valve 3 is opened and shut, a contact part between the contact surface and the contact part of the upper end surface of the valve is constituted to be offset above a plane 30 parallel to a plane 50 which passes through the rotating center 01 so that an angle θ formed by a line 40 connecting a rotating center 01 of a supporting part of the locker arm 1 and a center 02 of the curvature of the contact surface is set greater than zero.
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Inventors:
Shinyuki Hayashi
Application Number:
JP23543697A
Publication Date:
March 24, 2003
Filing Date:
August 15, 1997
Export Citation:
Assignee:
MITSUBISHI HEAVY INDUSTRIES,LTD.
International Classes:
F01L1/18; F16K24/00; F16K31/524; (IPC1-7): F01L1/18; F16K31/524
Domestic Patent References:
| JP7259512A | ||||
| JP8303219A | ||||
| JP63129107A | ||||
| JP56122706U | ||||
| JP59192605U | ||||
| JP6243105U | ||||
| JP5130908U | ||||
| JP5930501U |
Attorney, Agent or Firm:
Masahisa Takahashi (1 person outside)