Title:
VALVE TIMING CONTROL DEVICE FOR ENGINE
Document Type and Number:
Japanese Patent JPS59188013
Kind Code:
A
Abstract:
PURPOSE:To reduce the abrasion of a valve stem by rotating a rotating member to change the contact position between a cam face of a cam shaft and a tappet pressure-receiving part from a standard position where a tappet sliding direction accrods with a valve movement direction at the time of high speed rotation. CONSTITUTION:When a reciprocating shaft 18 is moved to the right by a driving unit 19, rotating members 14 and 14' are oscillated round cam shafts 9 and 10 via oscillating shafts 17 and 17'. The contact positions between cam faces 9a and 10a and tappet pressure-receiving parts 13a and 13'a are changed to the delay side against a cam rotating direction X, and the valve timing of suction (exhaust) valves 5 and 6 are slided to the delay side. The driving unit 19 keeps the rotating members 14 and 14' at a standard position where a tappet oscillating direction accords with a valve movement direction at the time of low speed rotation of an engine, and at the same time, it is controlled to rotate rotating members 14 and 14' from the standard position by a control unit at the time of high speed rotation.
Inventors:
ODA HIROYUKI
MASUDA TOSHIHARU
MORITA YASUYUKI
MASUDA TOSHIHARU
MORITA YASUYUKI
Application Number:
JP4566183A
Publication Date:
October 25, 1984
Filing Date:
March 18, 1983
Export Citation:
Assignee:
MAZDA MOTOR
International Classes:
F01L1/34; F01L1/344; (IPC1-7): F01L1/14
Attorney, Agent or Firm:
Minoru Nakamura
Previous Patent: VALVE TIMING CONTROL DEVICE FOR ENGINE
Next Patent: VALVE TIMING CONTROL DEVICE FOR ENGINE
Next Patent: VALVE TIMING CONTROL DEVICE FOR ENGINE