VALVE-MOVING DEVICE FOR ENGINE - YAMAHA MOTOR CO LTD

Title:

VALVE-MOVING DEVICE FOR ENGINE

Document Type and Number:

WIPO Patent Application WO/2004/097185

Kind Code:

A1

Abstract:

A valve-moving device for an engine, where a valve for opening and closing a valve opening of a combustion chamber is opened and closed by transmitting drive force from a drive member to the valve through a drive force transmission mechanism. The drive force transmission mechanism has a transmission portion and a variable portion. The transmission portion transmits the drive force from the drive member to the valve. The variation portion continuously varies the state of transmission of the drive force at the transmission portion by the rotation of an eccentric shaft portion forming the oscillation center of an oscillatably supported control arm, continuously varying the opening time period and lift amount of the valve. At least part of the variable portion is built in the transmission portion, and the variable portion is operated by the rotation of a shaft forming the oscillation center of the transmission member.

Inventors:

FUJITA HIDEO (JP)
HATAMURA KOICHI (JP)

Application Number:

PCT/JP2004/006426

Publication Date:

November 11, 2004

Filing Date:

May 06, 2004

Export Citation:

Click for automatic bibliography generation Help

Assignee:

YAMAHA MOTOR CO LTD (JP)
FUJITA HIDEO (JP)
HATAMURA KOICHI (JP)

International Classes:

F01L1/08; F01L1/18; F01L13/00; (IPC1-7): F01L13/00

Foreign References:

JPH06307219A	1994-11-01
JPH0617626A	1994-01-25
JPH0763023A	1995-03-07
JPH07293216A	1995-11-07

Other References: