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Title:
ENGINE CONTROL DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/188144
Kind Code:
A1
Abstract:
An engine control device (11) controls a fuel injection device (40) so that: if the aperture of a throttle valve (43) is a first aperture within a small-aperture range (C1), a fuel injection quantity of fuel injected from the fuel injection device (40) when a crankshaft (31) is rotating in reverse achieves a first fuel injection quantity; if the aperture of the throttle valve (43) is a second aperture, which is greater than the first aperture, within the small-aperture range (C1), the fuel injection quantity achieves a second fuel injection quantity that is greater than the first fuel injection quantity; if the aperture of the throttle valve (43) is a third aperture within a large-aperture range (C2) in which the aperture is larger than in the small-aperture range (C1), the fuel injection quantity achieves a third fuel injection quantity; and if the aperture of the throttle valve (43) is a fourth aperture, which is greater than the third aperture, within the large-aperture range (C2), the fuel injection quantity achieves a fourth fuel injection quantity that is less than the third fuel injection quantity. The engine control device (11) suppresses variation in the initial combustion state after the crankshaft (31) has rotated in reverse.

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Inventors:
YAMAGUCHI YUKI (JP)
MASUDA TAKAHIRO (JP)
TAKAHASHI SEIGO (JP)
Application Number:
PCT/JP2017/016029
Publication Date:
November 02, 2017
Filing Date:
April 21, 2017
Export Citation:
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Assignee:
YAMAHA MOTOR CO LTD (JP)
International Classes:
F02D13/02; F02D41/04; F02D41/06; F02D43/00; F02D45/00; F02N11/08; F02P5/15
Domestic Patent References:
WO2016051629A12016-04-07
WO2012091043A12012-07-05
WO2016013046A12016-01-28
Foreign References:
JP2014077405A2014-05-01
EP3002450A12016-04-06
JP2000257480A2000-09-19
JP2005146943A2005-06-09
JP2004052693A2004-02-19
JP2008157219A2008-07-10
JP2015081563A2015-04-27
JP2008202557A2008-09-04
Attorney, Agent or Firm:
KAJI, SUHARA & ASSOCIATES (JP)
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