Title:
FUEL INJECTION CONTROL DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/191732
Kind Code:
A1
Abstract:
This fuel injection control device is provided with a conduction time calculation unit (S14), a detection unit (54), an estimation unit (55), a correction unit (S13), a sudden change determination unit (S41, S41a), and a reflection speed setting unit (S12). If partial lift injection is executed, the conduction time calculation unit calculates a conduction time for an electric actuator, said conduction time corresponding to a requested injection amount. If the partial lift injection is executed, the detection unit detects a physical quantity which correlates with the actual injection amount. The estimation unit estimates the actual injection amount on the basis of the detection results of the detection unit. The correction unit corrects the requested injection amount using a correction amount corresponding to the amount of deviation between the actual injection amount and the requested injection amount. The sudden change determination unit determines whether a sudden change state is present on the basis of whether the correction amount has changed by equal to or more than a prescribed value in comparison to a previous value. When setting the reflection speed with which the correction unit causes the correction amount to be gradually reflected in the requested injection amount over a prescribed period of time, the reflection speed setting unit sets the reflection speed to a higher speed in cases when the sudden change determination unit has determined that the correction amount has changed suddenly, in comparison to cases when it has been determined that the correction amount has not changed suddenly.
Inventors:
SATAKE NOBUYUKI (JP)
NAKANO TOMOHIRO (JP)
NAKANO TOMOHIRO (JP)
Application Number:
PCT/JP2017/014475
Publication Date:
November 09, 2017
Filing Date:
April 07, 2017
Export Citation:
Assignee:
DENSO CORP (JP)
TOYOTA MOTOR CO LTD (JP)
TOYOTA MOTOR CO LTD (JP)
International Classes:
F02D45/00; F02D41/04; F02M57/02; F02M65/00
Foreign References:
| JP2015096720A | 2015-05-21 | |||
| JP2002089333A | 2002-03-27 | |||
| JP2013174174A | 2013-09-05 | |||
| JP2012172517A | 2012-09-10 | |||
| JPH06272598A | 1994-09-27 | |||
| JP2009057926A | 2009-03-19 |
Other References:
See also references of EP 3453865A4
Attorney, Agent or Firm:
JIN Shunji (JP)
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