Title:
SOLENOID VALVE CONTROL DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/026514
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a solenoid valve control device that is able to achieve silencing of a solenoid valve without failing to close the solenoid valve in a subsequent discharge operation of a fuel pump. To this end, in this solenoid valve control device 109 for controlling the opening/closing of a solenoid valve 300 in an internal combustion engine system, the success or failure of closing the solenoid valve 300 in a subsequent discharge operation of a fuel pump 125 is determined on the basis of a fuel pressure change inside a fuel rail 129, said change being produced by the current discharge operation of the fuel pump 125 and a discharge operation one or more cycles before the current discharge operation.
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Inventors:
NAKAI HIROTAKA (JP)
MUKAIHARA OSAMU (JP)
ITABA FUMIHIRO (JP)
MUKAIHARA OSAMU (JP)
ITABA FUMIHIRO (JP)
Application Number:
PCT/JP2022/002727
Publication Date:
March 02, 2023
Filing Date:
January 25, 2022
Export Citation:
Assignee:
HITACHI ASTEMO LTD (JP)
International Classes:
F16K31/06; F02M51/00; F02M59/36
Foreign References:
| JPH10299557A | 1998-11-10 | |||
| JP2015166579A | 2015-09-24 | |||
| JP2009121482A | 2009-06-04 | |||
| JP2016079902A | 2016-05-16 | |||
| US10954880B1 | 2021-03-23 | |||
| JP2016211452A | 2016-12-15 | |||
| JP2013050065A | 2013-03-14 |
Attorney, Agent or Firm:
KAICHI IP (JP)
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