Title:
電子制御装置
Document Type and Number:
Japanese Patent JP6733571
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an electronic control device capable of controlling the driving of a fuel injection valve and the other actuator with high performance while suppressing a size by making a booster circuit common.SOLUTION: A booster circuit 14 is configured by using: a boost switch Ta for boost drive; a pump 4 for driving piezo injectors 51-54; multiple charging capacitors C1 and C2 that are provided for driving a pressure reduction valve 9; and a common coil La for charging/discharging the multiple charging capacitors C1 and C2 by turning on/turning off the boost switch Ta. At least one or more boost changeover switches Tb are connected in the middle of multiple electrification paths between the common coil La and the multiple charging capacitors C1 and C2. A control IC 13 selectively performs boost control on a voltage of one or the multiple charging capacitors C1 and C2 or on voltages of the multiple charging capacitors C1 and C2 by controlling ON or OFF of the boost changeover switch Tb. The control IC 13 uses multiple step-up voltage sources charging the multiple charging capacitors to control the driving of the piezo injectors 51-54, the pump 4 and the pressure reduction valve 9.SELECTED DRAWING: Figure 2
Inventors:
Yukawa Pengxiang
Application Number:
JP2017021306A
Publication Date:
August 05, 2020
Filing Date:
February 08, 2017
Export Citation:
Assignee:
株式会社デンソー
International Classes:
F02D41/20; F02M51/06; F02M55/02; F02M59/36; H02M3/155; H02N2/06
Domestic Patent References:
| JP2012241668A | ||||
| JP2002364768A | ||||
| JP2011247185A | ||||
| JP2014214686A |
Attorney, Agent or Firm:
Patent Business Corporation Sato International Patent Office