Title:
FUEL INJECTION VALVE
Document Type and Number:
WIPO Patent Application WO/2018/021123
Kind Code:
A1
Abstract:
A fixed core (50) is provided with: an inner core part (52) which faces a movable core (40); and an outer core part (51) which is positioned further outwards than the inner core part with respect to a ring centre line (C), and which faces the movable core. This fuel injection valve is provided with: a restriction member (81, 810) which restricts movement of the inner core part and/or the outer core part towards the opposite side to the movable core as a result of the inner core part and/or the outer core part being subjected to fuel pressure; and a non-magnetic member (60) which is provided between the inner and outer core parts, and which has weaker magnetism than the fixed core. An inner tapered surface (52f), which is inclined with respect to the ring centre line in a cross section including the ring centre line, is formed on at least a part of the surface of the inner core part which is joined to the non-magnetic member. An outer tapered surface (51f), which is inclined with respect to the ring centre line in a cross section including the ring centre line, is formed on at least a part of the surface of the outer core part which is joined to the non-magnetic member. The inner and outer tapered surfaces have shapes which are inclined in the same direction with respect to the ring centre line.
Inventors:
SAIZEN MAKOTO (JP)
MATSUMOTO SHUICHI (JP)
TAKEDA HIDETO (JP)
IMAI KEITA (JP)
NIWA MASAYUKI (JP)
GOTO MORIYASU (JP)
YUAN ZIHANG (JP)
MATSUMOTO SHUICHI (JP)
TAKEDA HIDETO (JP)
IMAI KEITA (JP)
NIWA MASAYUKI (JP)
GOTO MORIYASU (JP)
YUAN ZIHANG (JP)
Application Number:
PCT/JP2017/026177
Publication Date:
February 01, 2018
Filing Date:
July 20, 2017
Export Citation:
Assignee:
DENSO CORP (JP)
International Classes:
F02M51/06; F16K31/06
Foreign References:
| US1758105A | 1930-05-13 | |||
| JPH1144275A | 1999-02-16 | |||
| JP2016065539A | 2016-04-28 | |||
| JP2016125360A | 2016-07-11 | |||
| JP2014177877A | 2014-09-25 | |||
| JP2014141924A | 2014-08-07 | |||
| JP2000046224A | 2000-02-18 | |||
| EP2747095A2 | 2014-06-25 |
Attorney, Agent or Firm:
JIN Shunji (JP)
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