Title:
燃料噴射制御装置
Document Type and Number:
Japanese Patent JP7215372
Kind Code:
B2
Abstract:
To suppress noise in accompany with on/off of a transistor applying a voltage to a fuel injection valve, in a fuel injection control device.SOLUTION: A fuel injection control device 1 includes drive transistors TR2, TR3 applying a power source voltage BV or a boost voltage Vbs obtained by boosting the power source voltage to a fuel injection valve 30, and impedance control portions 11, TR5, TR6 controlling impedance of control signals given to the drive transistors. The drive transistors TR2, TR3 perform constant current drive to intermittently apply the power source voltage VB or the boost voltage Vbs to the fuel injection valve 30 so that electric current of prescribed magnitude flows in the fuel injection valve 30, and the impedance control portions 11, TR5, TR6 increase the impedance of the control signals of the drive transistors TR2, TR3 during the constant current drive.SELECTED DRAWING: Figure 1
Inventors:
Daisuke Shimizu
Application Number:
JP2019146667A
Publication Date:
January 31, 2023
Filing Date:
August 08, 2019
Export Citation:
Assignee:
株式会社デンソー
International Classes:
F02D41/20; F02M51/00; H02M3/155
Domestic Patent References:
| JP2016169645A | ||||
| JP20156120A | ||||
| JP201944646A |
Attorney, Agent or Firm:
Kazuyuki Yahagi
Taihei Nonobe
Takanori Kubo
Taihei Nonobe
Takanori Kubo
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