Title:
燃料噴射装置の駆動装置
Document Type and Number:
Japanese Patent JP6400825
Kind Code:
B2
Abstract:
The purpose of the present invention is to provide a drive device that improves the precision of injection quantities by stabilizing the behavior of a valve body 214 under the condition that a valve body reaches a height position lower than a maximum height position and making the injection pulse width and the injection quantity gradient small. The present invention is a drive device for a fuel injection device for use in an internal combustion engine, wherein: the fuel injection device is provided with a valve body 214 that can open and close a fuel passage, a needle 202 that activates an opening and closing valve by transmitting power between itself and the valve body 214, and an electromagnet that comprises a solenoid 205 and a fixed core 207 provided as drive means for the needle 202, and a cylindrical nozzle holder 201 disposed on the outer peripheral side of the needle 202; and the drive device 150 controls a drive current flowing to the coil so as to decrease from the maximum drive current to a first drive current 610 that is lower than the maximum drive current before the valve body 214 reaches the maximum height position so that the valve body 214 reaches a height position lower than the maximum height position.
Inventors:
Ryo Kusakabe
Takatoshi Iizuka
Miyake Takeo
Sugaya Shinji
Kiyotaka Ogura
Shiro Yamaoka
Takatoshi Iizuka
Miyake Takeo
Sugaya Shinji
Kiyotaka Ogura
Shiro Yamaoka
Application Number:
JP2017502012A
Publication Date:
October 03, 2018
Filing Date:
February 01, 2016
Export Citation:
Assignee:
Hitachi Automotive Systems, Ltd.
International Classes:
F02D41/20; F02D41/40; F02M55/02; F02M61/08
Domestic Patent References:
| JP2011032922A | ||||
| JP2014025419A |
Foreign References:
| WO2013191267A1 | ||||
| WO2015015541A1 |
Attorney, Agent or Firm:
Hiraki International Patent Office