Title:
VALVE GEAR OF INTERNAL COMBUSTION ENGINE
Document Type and Number:
WIPO Patent Application WO/2005/019607
Kind Code:
A1
Abstract:
A valve gear of an internal combustion engine, wherein when a zone for one of the positive and negative accelerations of a rotating cam is set to be used by a ramp part, the ramp part is formed in a curved shape so that the lift amount of a swing cam per unit swing angle can generate the other positive or negative acceleration so that a valve lift speed at the portion of the valve corresponding to the ramp part is made generally constant.
Inventors:
HATAMURA KOICHI (JP)
FUJITA HIDEO (JP)
FUJITA HIDEO (JP)
Application Number:
PCT/JP2004/012191
Publication Date:
March 03, 2005
Filing Date:
August 25, 2004
Export Citation:
Assignee:
YAMAHA MOTOR CO LTD (JP)
HATAMURA KOICHI (JP)
FUJITA HIDEO (JP)
HATAMURA KOICHI (JP)
FUJITA HIDEO (JP)
International Classes:
F01L1/08; F01L13/00; (IPC1-7): F01L1/08; F01L13/00
Foreign References:
| JPS63118307U | 1988-07-30 | |||
| JPH07133709A | 1995-05-23 | |||
| JP2003148116A | 2003-05-21 | |||
| JP2003201814A | 2003-07-18 | |||
| JPH06272525A | 1994-09-27 |
Other References:
See also references of EP 1666701A4
Attorney, Agent or Firm:
Sano, Hiroshi (2-9 Irifune 1-chom, Chuo-ku Tokyo 42, JP)
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