Title:
INJECTOR
Document Type and Number:
WIPO Patent Application WO/2021/044938
Kind Code:
A1
Abstract:
An injector (20) comprises: a housing (30) having a cylindrical shape; a needle (50) having a valve element (52) for opening and closing an injection hole; a movable core (42) for moving the needle; a coil (44) for generating a magnetic field that moves the movable core in a valve opening direction of the needle; a stationary core (41) provided on the side of the movable core which is opposite the injection hole; a first space (91) that is compressed when the movable core moves upstream and expanded when the movable core moves downstream; a second space (92) that is expanded when the movable core moves upstream and compressed when the movable core moves downstream; and an in-core flow channel (81) that is formed in the movable core and communicates between the first space and the second space, the in-core flow channel having therein a flow channel restricting member (82) that makes the flow channel cross-sectional area of the in-core flow passage smaller when the movable core is moving than when the movable core is not moving.
Inventors:
ITOU TAKAMASA (JP)
FUJINO TOMOKI (JP)
FUJINO TOMOKI (JP)
Application Number:
PCT/JP2020/032360
Publication Date:
March 11, 2021
Filing Date:
August 27, 2020
Export Citation:
Assignee:
DENSO CORP (JP)
International Classes:
F02M51/06; F02M61/10; F02M61/16
Foreign References:
| JP2018189002A | 2018-11-29 | |||
| JP2010196505A | 2010-09-09 | |||
| JP2014231810A | 2014-12-11 |
Attorney, Agent or Firm:
TOKKYO GYOMUHOJIN MEISEI INTERNATIONAL PATENT FIRM (JP)
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