Title:
FUEL INJECTION CONTROL DEVICE AND FUEL INJECTION CONTROL METHOD
Document Type and Number:
WIPO Patent Application WO/2023/228595
Kind Code:
A1
Abstract:
The present invention provides a fuel injection control device and a fuel injection method capable of reducing a fluctuation in injection amount. The fuel injection control device comprises a feature amount detection unit (closed valve timing detection unit), a fluctuation ratio calculation unit, and a correction unit (correction fuel injection pulse calculation unit). The feature amount detection unit detects a feature amount (closed valve delay time) relating to a closed valve of the fuel injection device from a driving signal of the fuel injection device. The fluctuation ratio calculation unit calculates a fluctuation ratio of a feature amount in a plurality of cycles. The correction unit learns a driving condition of an internal combustion engine and a fuel injection condition under which the fluctuation ratio of the feature amount becomes greater than a prescribed threshold, and corrects the fuel injection condition or the driving condition of the internal combustion engine so as to avoid driving under the learned condition.
Inventors:
YONEYA NAOKI (JP)
MIYAMOTO AKIYASU (DE)
MIYAKE TAKAO (JP)
SUGII TAISUKE (JP)
MUKAI HIROSHI (JP)
MIYAMOTO AKIYASU (DE)
MIYAKE TAKAO (JP)
SUGII TAISUKE (JP)
MUKAI HIROSHI (JP)
Application Number:
PCT/JP2023/014128
Publication Date:
November 30, 2023
Filing Date:
April 05, 2023
Export Citation:
Assignee:
HITACHI ASTEMO LTD (JP)
International Classes:
F02D1/02; F02D41/34; F02M51/00
Domestic Patent References:
| WO2016203941A1 | 2016-12-22 |
Foreign References:
| JP2020153354A | 2020-09-24 | |||
| JP2018112120A | 2018-07-19 |
Attorney, Agent or Firm:
SHIN-YU INTERNATIONAL PATENT FIRM (JP)
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