Title:
CONTROL DEVICE FOR HIGH-PRESSURE FUEL PUMP
Document Type and Number:
WIPO Patent Application WO/2023/199612
Kind Code:
A1
Abstract:
This control device for controlling a high-pressure fuel pump (103) is provided with: a plunger operation determination unit (801); a fuel-pressure rising evaluation unit (802); a closing valve determination unit (803); and an ejection amount control unit (804) that controls a current application start timing for a solenoid (205) on the basis of a fuel pressure measured by the fuel-pressure sensor (401) and a target fuel pressure to control an ejection amount of fuel. The ejection amount control unit (804) determines a control gain of the current application start timing on the basis of a determination result of the closing valve determination unit (803).
Inventors:
AONO TOSHIHIRO (JP)
NAKAI HIROTAKA (JP)
NAKAI HIROTAKA (JP)
Application Number:
PCT/JP2023/006423
Publication Date:
October 19, 2023
Filing Date:
February 22, 2023
Export Citation:
Assignee:
HITACHI ASTEMO LTD (JP)
International Classes:
F02M59/02; F02D41/38; F02M59/20; F02M59/36
Domestic Patent References:
| WO2021245984A1 | 2021-12-09 |
Foreign References:
| JP2007327409A | 2007-12-20 | |||
| JP2017053247A | 2017-03-16 | |||
| JP2021134760A | 2021-09-13 | |||
| JP2021032178A | 2021-03-01 |
Attorney, Agent or Firm:
KAICHI IP (JP)
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