Title:
FUEL INJECTION CONTROL DEVICE AND FUEL INJECTION CONTROL METHOD
Document Type and Number:
WIPO Patent Application WO/2020/240985
Kind Code:
A1
Abstract:
The objective of the present invention is to enable appropriate detection of an abnormality in voltage information serving as the basis for correcting a fuel injection quantity. To this end, a fuel injection control device 127 including a drive IC 208 which controls a fuel injection drive unit 207a to supply a high voltage for opening a fuel injection valve 105 to a solenoid 405, and controls the fuel injection drive unit 207a to supply a low voltage for maintaining the open state of the fuel injection valve 105 to the solenoid 405 is configured to include: a drive voltage input unit 211 for measuring and outputting voltage information based on an upstream side voltage of the solenoid 405 of the fuel injection valve 105 and a downstream side voltage of the solenoid 405; a fuel injection quantity correcting unit 213 for correcting a fuel injection quantity resulting from the fuel injection valve 105, on the basis of the voltage information output from the drive voltage input unit 211; and a voltage input function abnormality detecting unit 212 for detecting whether the output from the drive voltage input unit 211 is abnormal, on the basis of the voltage information output from the drive voltage input unit 211.
Inventors:
ITABA FUMIHIRO (JP)
MUKAIHARA OSAMU (JP)
KOJIMA SATOSHI (JP)
MUKAIHARA OSAMU (JP)
KOJIMA SATOSHI (JP)
Application Number:
PCT/JP2020/010440
Publication Date:
December 03, 2020
Filing Date:
March 11, 2020
Export Citation:
Assignee:
HITACHI AUTOMOTIVE SYSTEMS LTD (JP)
International Classes:
F02D41/22; F02D41/04; F02D41/20; F02D45/00; F02M51/00
Domestic Patent References:
| WO2013191267A1 | 2013-12-27 |
Attorney, Agent or Firm:
TODA Yuji (JP)
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