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Title:
FUEL INJECTION CONTROL DEVICE
Document Type and Number:
Japanese Patent JP2017201159
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a fuel injection control device for compatibly responding to a secular change of injection characteristics and responding to the replacement of a fuel injection valve.SOLUTION: The fuel injection control device includes an energizing time calculation part in Step S14, a detection part, an estimation part, a correction part in Step S13, a sudden change determination part, and a reflection speed setting part in Step S12. When partial injection is performed, the detection part detects a physical quantity in correlation with an actual injection amount. The estimation part estimates the actual injection amount on the basis of the detection result of the detection part. The correction part corrects a required injection amount using a correction amount corresponding to a deviation between the actual injection amount and the required injection amount. The reflection speed setting part, when setting such a reflection speed that the correction part gradually reflects the correction amount to the required injection amount in need of a predetermined period, sets the reflection speed to be higher if the sudden change determination part determines that the correction amount is suddenly changed than if it is determined that it is not suddenly changed.SELECTED DRAWING: Figure 7

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Inventors:
SATAKE NOBUYUKI
NAKANO TOMOHIRO
Application Number:
JP2016093319A
Publication Date:
November 09, 2017
Filing Date:
May 06, 2016
Export Citation:
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Assignee:
DENSO CORP
TOYOTA MOTOR CORP
International Classes:
F02D45/00; F02D41/04; F02M57/02; F02M65/00
Domestic Patent References:
JP2015096720A2015-05-21
JPS6189946A1986-05-08
JP2009036024A2009-02-19
JP2002089333A2002-03-27
JP2013174174A2013-09-05
JP2012172517A2012-09-10
Attorney, Agent or Firm:
Kazuyuki Yahagi
Taihei Nonobe
Takanori Kubo



 
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