Title:
VALVE GEAR
Document Type and Number:
WIPO Patent Application WO/2013/099695
Kind Code:
A1
Abstract:
Provided is a valve gear which achieves a reduced size and is capable of changing the valve opening timing of an engine valve and changing the length of the valve opening period thereof. A valve gear (20A) is provided with: a rotatable first camshaft (21); a first cam piece (23) that is relatively unrotatably provided on the first camshaft (21); a second camshaft (22) that is included in the first camshaft (21) and coaxially rotatable; a second cam piece (23) that is relatively unrotatably provided on the second camshaft (22); a housing (25A); a first vane rotor (26A) that is relatively rotatable with respect to the housing (25A); and a second vane rotor (27A) that is relatively rotatable with respect to the housing (25A) and the first vane rotor (26A). The first vane rotor (26A) is relatively unrotatably coupled to the second camshaft (22), and the second vane rotor (27A) is relatively rotatably coupled to the first camshaft (21).
Inventors:
MATSUMOCHI YUJI (JP)
KOBAYASHI KAORI (JP)
KOBAYASHI KAORI (JP)
Application Number:
PCT/JP2012/082761
Publication Date:
July 04, 2013
Filing Date:
December 18, 2012
Export Citation:
Assignee:
HONDA MOTOR CO LTD (JP)
International Classes:
F01L1/356; F01L1/04; F01L13/00
Domestic Patent References:
| WO2012132002A1 | 2012-10-04 |
Foreign References:
| JP2006105062A | 2006-04-20 | |||
| JP2008528871A | 2008-07-31 | |||
| JP2009144522A | 2009-07-02 | |||
| JP2002054410A | 2002-02-20 |
Attorney, Agent or Firm:
ISONO Michizo (JP)
Michizo Isono (JP)
Michizo Isono (JP)
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Claims: