Title:
燃料噴射弁駆動装置
Document Type and Number:
Japanese Patent JP7165044
Kind Code:
B2
Abstract:
This fuel includes: a first switching element disposed between a booster circuit boosting a battery power and one end of a solenoid; a second switching element disposed between a battery and one end of the solenoid; a third switching element disposed between the other end of the solenoid and a ground; a fourth switching element disposed between one end of the solenoid and a ground; and a control unit configured to control open/closed states of the first switching element, the second switching element, the third switching element, and the fourth switching element. The control unit is configured to open the fourth switching element during a valve closing detection period of detecting closing of a fuel injection valve and to detect the closing of the fuel injection valve on the basis of a change in voltage of the other end of the solenoid.
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Inventors:
Ogawa Isshi
Daiaki Kato
Kengo Nomura
Keisuke Kuroda
Ryu Takashi
Daiaki Kato
Kengo Nomura
Keisuke Kuroda
Ryu Takashi
Application Number:
JP2018234459A
Publication Date:
November 02, 2022
Filing Date:
December 14, 2018
Export Citation:
Assignee:
Hitachi Astemo, Ltd.
Nuvoton Technology Japan Corporation
Nuvoton Technology Japan Corporation
International Classes:
F02M51/06; F02D41/20; F02D41/30; F02M65/00
Domestic Patent References:
| JP2014234922A | ||||
| JP2018093044A |
Foreign References:
| WO2013191267A1 | ||||
| WO2014174916A1 |
Attorney, Agent or Firm:
Shu Oikawa
Yuichiro Shimizu
Hisanori Takahashi
Yuichiro Shimizu
Hisanori Takahashi