VALVE GEAR FOR ENGINE - YAMAHA MOTOR CO LTD

Title:

VALVE GEAR FOR ENGINE

Document Type and Number:

WIPO Patent Application WO/2015/083654

Kind Code:

A1

Abstract:

　A valve gear for an engine is provided with cam shafts (3, 4), first and second support walls (34, 35, 56, 57), and rocker arms (7-10) supported on the first and second support walls by support mechanisms (11-14). The support mechanisms can be switched among a plurality of support modes. The support mechanisms are provided with first and second shaft holes (41, 61), rocker shafts (81), tracks (49) formed in the support walls, and return springs (92). The rocker shafts (81) move to positions where the support walls and the rocker arms (7-10) are linked via the rocker shafts when a first support mode is enacted. When a second support mode is enacted, the rocker shafts move to positions where the link between the support walls and the rocker arms (7-10) is released. This makes it possible to provide a valve gear (1) for an engine which can smoothly switch between a support mode during normal operation and a support mode during cylinder standstill, and which has high operational reliability.

More Like This:

JP2015124707	OHV ENGINE MOVABLE VALVE MECHANISM
JP2015212535	VARIABLE VALVE GEAR OF INTERNAL COMBUSTION ENGINE
WO/1998/042961	VALVE GEAR FOR GAS EXCHANGE VALVES OF INTERNAL COMBUSTION ENGINES

Inventors:

FUJITA HIDEO (JP)

Application Number:

PCT/JP2014/081695

Publication Date:

June 11, 2015

Filing Date:

December 01, 2014

Export Citation:

Click for automatic bibliography generation Help

Assignee:

YAMAHA MOTOR CO LTD (JP)

International Classes:

F01L13/00; F01L1/18; F01L9/11

Foreign References:

JP2008151115A	2008-07-03
JPS6090905A	1985-05-22
JP2011236883A	2011-11-24
JP2008190392A	2008-08-21
JP2001271620A	2001-10-05
JP2008151115A	2008-07-03

Other References: