Title:
FUEL INJECTION CONTROL DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/131777
Kind Code:
A1
Abstract:
Provided is a fuel injection control device capable of stabilizing the motion of a movable element and a valve body. This fuel injection control device controls the fuel injection amount of a fuel injection device provided with: a valve body that separates from a valve seat to open a fuel path; a movable element that causes the valve body to perform open/close operations; and a stationary element that suctions the movable element due to current flowing in a coil. This fuel injection control device comprises: an open valve timing detection unit that detects an valve opening completion timing (T32) at which the movable element collides with the stationary element; and a control unit that carries out control for applying reverse voltage before the valve opening completion timing (T32) to shut off the driving current, and applying voltage such that a hold current (331) flows, the hold current being a driving current for maintaining the valve body in the open valve state after the valve opening completion timing.
Inventors:
MIYAMOTO AKIYASU (JP)
MIYAKE TAKAO (JP)
SUGAYA MASASHI (JP)
SUGII TAISUKE (JP)
MIYAKE TAKAO (JP)
SUGAYA MASASHI (JP)
SUGII TAISUKE (JP)
Application Number:
PCT/JP2020/046236
Publication Date:
July 01, 2021
Filing Date:
December 11, 2020
Export Citation:
Assignee:
HITACHI ASTEMO LTD (JP)
International Classes:
F02M65/00; F02D41/20; F02M51/00; F02M51/06; F02M61/10
Domestic Patent References:
| WO2016136394A1 | 2016-09-01 | |||
| WO2012029507A1 | 2012-03-08 |
Foreign References:
| JP2018189094A | 2018-11-29 | |||
| JP2017057798A | 2017-03-23 |
Attorney, Agent or Firm:
TODA Yuji (JP)
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