Title:
GAS FUEL INJECTION VALVE
Document Type and Number:
WIPO Patent Application WO/2023/233661
Kind Code:
A1
Abstract:
Provided is a gas fuel injection valve (1) wherein a seat member (11) is bonded to the distal end surface of a plunger (10) with a sufficient strength. The gas fuel injection valve (1) comprises a valve seat (2) and the plunger (10) having the distal end surface bonded to the seat member (11) which has an annular protruding section (27), wherein the plunger (10) is driven so as to repeat a closed valve state in which the annular protruding section is seated on the valve seat (2) and an open valve state in which the annular protruding section is separated from the valve seat (2). The distal end surface of the plunger (10) is provided with an annular surface (26) extending further radially outward than the annular protruding section (27). The seat member (11) is provided with an annular reinforcing band (28) extending radially outward from the circumference of the annular protruding section (27) and bonded to the annular surface (26).
Inventors:
SASAKI TAKAHIRO (JP)
KAKINUMA YASUYUKI (JP)
NAMIKI YUICHI (JP)
KAKINUMA YASUYUKI (JP)
NAMIKI YUICHI (JP)
Application Number:
PCT/JP2022/022660
Publication Date:
December 07, 2023
Filing Date:
June 03, 2022
Export Citation:
Assignee:
HITACHI ASTEMO LTD (JP)
KOKOKU RUBBER AKABANE FACTORY CO LTD (JP)
KOKOKU RUBBER AKABANE FACTORY CO LTD (JP)
International Classes:
F02M21/02
Foreign References:
| JP2007507645A | 2007-03-29 | |||
| JP2006077777A | 2006-03-23 | |||
| JP2017002798A | 2017-01-05 | |||
| JP2015105592A | 2015-06-08 | |||
| JP2010236391A | 2010-10-21 |
Attorney, Agent or Firm:
DELOITTE TOHMATSU IP FIRM (JP)
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