(19)
(11) EP 2 031 195 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
14.04.2010 Bulletin 2010/15

(43) Date of publication A2:
04.03.2009 Bulletin 2009/10

(21) Application number: 08252811.8

(22) Date of filing: 22.08.2008
(51) International Patent Classification (IPC): 
F01L 1/18(2006.01)
F01L 1/46(2006.01)
 F01L 1/053(2006.01)
F01L 1/20(2006.01)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
Designated Extension States:
AL BA MK RS

(30) Priority: 31.08.2007 JP 2007226672

(71) Applicant: Yamaha Hatsudoki Kabushiki Kaisha
Iwata-shi, Shizuoka-ken 438-8501 (JP)

(72) Inventor:
  • Onimura, Naoki
    Iwata-shi, Shizuoka-ken 438-8501 (JP)

(74) Representative: Harris, Ian Richard 
D Young & Co
120 Holborn London EC1N 2DY
120 Holborn London EC1N 2DY (GB)

   


(54) Engine and vehicle


(57) To provide a structure for determining a position of a rocker arm (412,413) that allows easy maintenance, an engine (100) has a cylinder head (113) in which a valve drive mechanism (400) is provided. The valve drive mechanism (400) includes rocker arm shafts (414,415) that are fitted to the cylinder head (113); rocker arms (412,413) that are fitted to the rocker arm shafts (414,415) so as to be moveable in the axial direction; and a head cover (114) (an upper arranging member) that is attached to the cylinder head (113). The head cover (114) is provided with guide members (731,732) that engage with the rocker arms (412,413), and guide the rocker arms (412,413) to determined positions on the rocker arm shafts (414,415) when the head cover (114) is attached to the cylinder head (113).







Search report