Title:
FUEL INJECTION CONTROL DEVICE
Document Type and Number:
Japanese Patent JP2018017134
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a fuel injection control device which can avoid that a current change at constant current control becomes noise, and is superimposed on a power supply voltage.SOLUTION: A fuel injection control device has a control part. The control part turns on a corresponding discharge switch and a low-side switch corresponding in a discharge period, and in a constant current period, performs control for turning-on/off the corresponding constant current switch and the low-side switch so that a current reaches a prescribed holding current value Ihold which is lower than a peak current value Ipeak. The control part also performs control for turning-on/off a constant current switch and a low-side switch corresponding to a second injector so that a current having a phase reverses to that of the current flowing in a first injector flow to the second injector, which is one of injectors different from the first injector and which is driven by a high-side circuit part different from that of the first injector, in a constant current period of the first injector, which is one of the direct injection injectors.SELECTED DRAWING: Figure 3
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Inventors:
WATARI DAISUKE
Application Number:
JP2016145757A
Publication Date:
February 01, 2018
Filing Date:
July 25, 2016
Export Citation:
Assignee:
DENSO CORP
International Classes:
F02D41/20; F02D41/36; F02M51/00; F02M51/06
Attorney, Agent or Firm:
Kazuyuki Yahagi
Taihei Nonobe
Takanori Kubo
Taihei Nonobe
Takanori Kubo
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