Title:
VALVE GEAR FOR ENGINE
Document Type and Number:
WIPO Patent Application WO/2015/093290
Kind Code:
A1
Abstract:
This valve gear for an engine is provided with a camshaft body (6), a first cam (7) and second cam (8) provided on the camshaft body (6), and a rocker shaft (25). The valve gear is provided with a rocker arm (21) and control arm (25) that rock about the rocker shaft (25), and an auxiliary arm (22) that is rockably supported by the control arm (27). The rocker arm (21) has a pressure-receiving portion (23) that can be brought into contact with the first cam (7) and a pressing portion (24) that presses an intake valve or an exhaust valve. A pressing member (31) is provided at a rocking end of the auxiliary arm (22). The pressing member (31), while being held between the second cam (8) and the rocker arm (21), is movable in one rotational direction of the second cam (8) or the other rotational direction in response to the rocking of the control arm (27). A valve gear for an engine capable of controlling the size of a valve operating angle is thus provided.
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Inventors:
KAMICHIKA TAKUROU (JP)
Application Number:
PCT/JP2014/081941
Publication Date:
June 25, 2015
Filing Date:
December 03, 2014
Export Citation:
Assignee:
YAMAHA MOTOR CO LTD (JP)
International Classes:
F01L13/00; F01L1/18
Domestic Patent References:
WO2006025565A1 | 2006-03-09 |
Foreign References:
JP2002371816A | 2002-12-26 | |||
JP2007278097A | 2007-10-25 | |||
JP2003239712A | 2003-08-27 | |||
JPH06307219A | 1994-11-01 | |||
JPS5645103U | 1981-04-23 | |||
JPS56109606U | 1981-08-25 |
Attorney, Agent or Firm:
YAMAKAWA, Masaki et al. (JP)
Masaki Yamakawa (JP)
Masaki Yamakawa (JP)
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