Title:
燃料噴射装置
Document Type and Number:
Japanese Patent JP6698802
Kind Code:
B2
Abstract:
To provide a drive part structure of a fuel injection device capable of improving responsiveness.SOLUTION: On an inner peripheral surface of a magnetic core 107, a magnetic throttle 201 is provided in which an inner diameter increases gradually toward a movable element 102 side. When a current is supplied to a coil, magnetization starts from an outer peripheral surface side of the magnetic core 107 located in the vicinity of the coil 105 due to the influence of an eddy current, and the magnetization progresses toward the inner peripheral surface side of the magnetic core 107. When a current supply to the coil 105 is stopped, demagnetization starts from the outer peripheral surface side of the magnetic core 107. By providing the magnetic throttle 201 on the inner peripheral surface of the magnetic core 107, it becomes possible to shorten magnetic delay time at valve opening since the current is supplied to the coil 105 until a magnetic flux rises and magnetic delay time at valve closing since the current supply to the coil is stopped until the magnetic flux decreases, and dynamic responsiveness at valve opening and valve closing can be improved.SELECTED DRAWING: Figure 2
Inventors:
Ryo Kusakabe
Motoyuki Abe
Toru Ishikawa
Noriyuki Maekawa
Masahiro Soma
Miyake Takeo
Yasuo Izawa
Motoyuki Abe
Toru Ishikawa
Noriyuki Maekawa
Masahiro Soma
Miyake Takeo
Yasuo Izawa
Application Number:
JP2018229518A
Publication Date:
May 27, 2020
Filing Date:
December 07, 2018
Export Citation:
Assignee:
Hitachi Automotive Systems, Ltd.
International Classes:
F02M51/06
Domestic Patent References:
| JP2008121679A | ||||
| JP2004346856A | ||||
| JP2010261396A | ||||
| JP2003106236A | ||||
| JP2007205234A | ||||
| JP2005351203A | ||||
| JP2010084552A |
Foreign References:
| WO2008038396A1 |
Attorney, Agent or Firm:
Yuji Toda