Title:
INTERNAL COMBUSTION ENGINE CONTROL DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/243032
Kind Code:
A1
Abstract:
The present disclosure provides an internal combustion engine control device capable of simultaneously improving the stability and response of the transient response of the ejection pressure of a high-pressure fuel pump relative to a pressure target value. An internal combustion engine control device (ECU 100) is provided with a feedback control unit 110, a flow amount limitation unit 120, and an energization start angle computation unit 130. The feedback control unit 110 uses a pressure detection value Pd by a pressure sensor of fuel ejected from a high-pressure fuel pump into a fuel injection device, and a pressure target value Pt of the ejection pressure of the high-pressure fuel pump as inputs, and outputs a pressure deviation ΔP between the pressure detection value Pd and the pressure target value Pt, and a flow amount target value QT of the ejection flow amount of the high-pressure fuel pump. The flow amount limitation unit 120 uses the pressure deviation ΔP and the flow amount target value QT as inputs, and outputs a limited flow amount value QL which is obtained by limiting the flow amount target value QT, on the basis of the value of the pressure deviation ΔP and an amount of change. The energization start angle computation unit 130 calculates an energization start phase θon in reciprocating movement of a plunger at which energization of an electromagnetic valve of the high-pressure fuel pump is started, in accordance with the limited flow amount value QL.
Inventors:
YAMAGUCHI NAOMICHI (JP)
NAKAI HIROTAKA (JP)
ETO TAKESHI (JP)
TOYOHARA MASAHIRO (JP)
NAKAI HIROTAKA (JP)
ETO TAKESHI (JP)
TOYOHARA MASAHIRO (JP)
Application Number:
PCT/JP2022/024091
Publication Date:
December 21, 2023
Filing Date:
June 16, 2022
Export Citation:
Assignee:
HITACHI ASTEMO LTD (JP)
International Classes:
F02D41/38; F02M51/00; F02M59/36
Foreign References:
| JP2003307149A | 2003-10-31 | |||
| JP2003106208A | 2003-04-09 | |||
| JP2004019639A | 2004-01-22 | |||
| JP2006112371A | 2006-04-27 | |||
| JP2007205193A | 2007-08-16 | |||
| US20160084191A1 | 2016-03-24 | |||
| JP2007100668A | 2007-04-19 | |||
| JP2002188545A | 2002-07-05 | |||
| JP2011202549A | 2011-10-13 |
Attorney, Agent or Firm:
HIRAKI & ASSOCIATES (JP)
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