FUEL INJECTION CONTROL DEVICE

WIPO Patent Application WO/2017/191731

A1

This fuel injection control device is provided with a conduction time calculation unit (S12), a setting unit (S14, S15), a conduction control unit (S16), a detection unit (54), an estimation unit (55), and a changing unit (S47). 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 conduction time calculated by the conduction time calculation unit is equal to or greater than a lower limit time, the setting unit sets the conduction time as a command conduction time. If the calculated conduction time is lower than the lower limit time, the setting unit sets the lower limit time as the command conduction time. The conduction control unit passes a current through the electric actuator on the basis of the command conduction time set by the setting unit. The detection unit detects a physical quantity which correlates with the actual injection amount when partial lift injection is executed. The estimation unit estimates the actual injection amount on the basis of the detection results of the detection unit. The changing unit changes the lower limit time on the basis of the amount of deviation between the estimated actual injection amount and the requested injection amount.

SATAKE NOBUYUKI (JP)
NAKANO TOMOHIRO (JP)

PCT/JP2017/014474

November 09, 2017

April 07, 2017

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DENSO CORP (JP)
TOYOTA MOTOR CO LTD (JP)

F02D45/00; F02D41/04; F02M57/02; F02M65/00

WO2013191267A1

2013-12-27

JP2016008569A	2016-01-18
JP2015096722A	2015-05-21
JP2010261334A	2010-11-18
JP2015096720A	2015-05-21

See also references of EP 3453864A4

JIN Shunji (JP)

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