Title:
ADJUSTABLE VALVE GEAR OF INTERNAL COMBUSTION ENGINE
Document Type and Number:
WIPO Patent Application WO/2003/074845
Kind Code:
A1
Abstract:
An adjustable valve gear of an internal combustion engine capable of continuously changing the opened lift amounts and opened operating angles of valves by a three-dimensional cam, wherein the three-dimensional cam (48) converts the cam lift and operating angle of the three-dimensional cam (48) into the opened lift amounts and opened operating angles of the valves (52) and (53) through a cam follower (49) moved within a specified width and rotated in contact with the three-dimensional cam (48) and a sliding holder (51) in contact with the lower surface of the cam follower (49), the cam follower (49) is swingably and rotatably held on the sliding holder (5) since the spherical projected part (64) thereof provided on the lower side is inserted into the center recessed part (66) of the sliding holder (51), and the cam follower (49) is rotated and swung on the cam surface of the three-dimensional cam (48) and a projected surface (62) through lubricating oil, whereby the friction and wear of the valve gear can be reduced, a high speed rotation can be performed with a simple structure, and a low fuel consumption and high torque can be achieved by a variable intake by the valves.
Inventors:
SUYAMA HIDEO (JP)
ITO YOICHI (JP)
ITO YOICHI (JP)
Application Number:
PCT/JP2003/002528
Publication Date:
September 12, 2003
Filing Date:
March 04, 2003
Export Citation:
Assignee:
A C E TECH CO LTD (JP)
SUYAMA HIDEO (JP)
ITO YOICHI (JP)
SUYAMA HIDEO (JP)
ITO YOICHI (JP)
International Classes:
F01L1/18; F01L1/26; F01L13/00; (IPC1-7): F01L13/00; F01M9/10
Foreign References:
| US4850311A | 1989-07-25 | |||
| US5832889A | 1998-11-10 | |||
| JPH11280438A | 1999-10-12 | |||
| US4773359A | 1988-09-27 |
Download PDF: