Title:
INJECTION CONTROL DEVICE
Document Type and Number:
Japanese Patent JP2021085379
Kind Code:
A
Abstract:
To provide an injection control device for appropriately supplying to a fuel injection valve energy required for opening it while avoiding an increase in the size and cost of the device.SOLUTION: An injection control device 1 performs peak current drive and constant current drive of the fuel injection valve to control the opening/closing of the fuel injection valve and control the injection of fuel from the fuel injection valve to an internal combustion engine. The injection control device 1 includes preheat current carrying control parts 3b, 12b for, before starting the internal combustion engine and when the temperature of a solenoid coil of the fuel injection valve is lower than a predetermined temperature, carrying a preheat current having power density to raise the temperature of the solenoid coil within a range to hold a valve closing state, to the fuel injection valve, and for, when the temperature of the solenoid coil reaches the predetermined temperature or higher, stopping carrying the preheat current to the fuel injection valve.SELECTED DRAWING: Figure 2
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Inventors:
INABA MASASHI
Application Number:
JP2019215373A
Publication Date:
June 03, 2021
Filing Date:
November 28, 2019
Export Citation:
Assignee:
DENSO CORP
International Classes:
F02D41/20; F02M51/00; F02M51/06; F02M53/00
Domestic Patent References:
| JP2016205401A | 2016-12-08 | |||
| JP2009243418A | 2009-10-22 | |||
| JP2008144761A | 2008-06-26 | |||
| JP2017145760A | 2017-08-24 | |||
| JP2009138634A | 2009-06-25 | |||
| JP2017106400A | 2017-06-15 | |||
| JPH05222993A | 1993-08-31 |
Attorney, Agent or Firm:
Patent Business Corporation Sato International Patent Office