Title:
ENGINE SYSTEM AND SADDLE-TYPE VEHICLE
Document Type and Number:
WIPO Patent Application WO/2016/013044
Kind Code:
A1
Abstract:
A reverse-rotation starting operation, in which a crankshaft is rotated in the reverse direction and subsequently rotated in the forward direction, is performed when starting an engine. In the reverse-rotation starting operation: when the crank angle is in a starting air-intake range during rotation of the crankshaft in the reverse direction, and/or when the crank angle is in a normal air-intake range during rotation of the crankshaft in the forward direction, a fuel injection device injects fuel such that a fuel-air mixture passes through an air-intake port from an air-intake passage and is introduced into a combustion chamber; and an ignition device ignites the fuel-air mixture in the combustion chamber when the crank angle is in a starting ignition range. Before a piston reaches the initial compression top dead centre during rotation of the crankshaft in the forward direction in the reverse-rotation starting operation, in cases when the rotation state detected by a rotation-state detection unit does not satisfy predetermined starting conditions, an engine unit is controlled such that the reverse-rotation starting operation is performed again.
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Inventors:
YAMAGUCHI YUKI (JP)
MASUDA TAKAHIRO (JP)
TAKAHASHI SEIGO (JP)
MASUDA TAKAHIRO (JP)
TAKAHASHI SEIGO (JP)
Application Number:
PCT/JP2014/003879
Publication Date:
January 28, 2016
Filing Date:
July 23, 2014
Export Citation:
Assignee:
YAMAHA MOTOR CO LTD (JP)
International Classes:
F02D29/02; F02D13/02; F02D41/06; F02D43/00; F02D45/00; F02N11/08; F02P5/15
Foreign References:
JP2014077405A | 2014-05-01 | |||
JP2004176709A | 2004-06-24 | |||
JP2005315231A | 2005-11-10 | |||
JP2004339952A | 2004-12-02 |
Other References:
See also references of EP 3173606A4
Attorney, Agent or Firm:
FUKUSHIMA, Yoshito (JP)
Yoshihito Fukushima (JP)
Yoshihito Fukushima (JP)
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