Title:
FUEL INJECTION CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE
Document Type and Number:
WIPO Patent Application WO/2017/051707
Kind Code:
A1
Abstract:
In the present invention an ECU (40) is equipped with: an injection control unit that executes a partial-lift injection, wherein a fuel injection valve (30) is driven with an injection pulse with which the amount of lift of the valve body of the fuel injection valve (30) does not reach the fully lifted position; a first calculation unit that calculates a first parameter that correlates with the amount of induced electromotive force generated by a change in magnetic flux when the valve body moves to the closed position, after the injection pulse for the partial-lift injection turns off; a second calculation unit that, on the basis of the time-series variation of the induced electromotive force, calculates a second parameter that correlates with a voltage inflection point generated when the valve body reaches the closed position, after the injection pulse for the partial-lift injection turns off; and a correction unit that corrects the duration of the injection pulse on the basis of the first parameter and the second parameter.
Inventors:
SATAKE NOBUYUKI (JP)
Application Number:
PCT/JP2016/076239
Publication Date:
March 30, 2017
Filing Date:
September 07, 2016
Export Citation:
Assignee:
DENSO CORP (JP)
International Classes:
F02D41/34; F02D41/20; F02D45/00; F02M51/04; F02M51/08; F02M57/02
Domestic Patent References:
| WO2013191267A1 | 2013-12-27 |
Foreign References:
| JP2015096720A | 2015-05-21 | |||
| JPS5713843U | 1982-01-23 | |||
| US20110120423A1 | 2011-05-26 | |||
| US20030071613A1 | 2003-04-17 |
Attorney, Agent or Firm:
JIN Shunji (JP)
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