Title:
燃料噴射弁
Document Type and Number:
Japanese Patent JP7171448
Kind Code:
B2
Abstract:
To provide a fuel injection valve capable of suppressing overshoot and undershoot.SOLUTION: In a fuel injection valve, when the valve is closed, a plunger rod 114A and an anchor 102 have an axial gap G2 which is formed by an intermediate member 133 between a stepped portion 129 and an upper end surface 102A of the anchor 102. The fuel injection valve includes a first sliding portion 141 in which the plunger rod 114A and the anchor 102 slide in the axial direction, and a second sliding portion 142 in which the stepped portion 129 and the intermediate member 133 slide in the axial direction, and a third sliding portion 143 in which the anchor 102 and the intermediate member 133 slide in the axial direction. A first minute gap of the first sliding portion 141, a second minute gap of the second sliding portion 142 and a third minute gap of the third sliding portion 143 are connected to a closed space 144 surrounded by the plunger rod 114A, the anchor 102 and the intermediate member 133.SELECTED DRAWING: Figure 2
Inventors:
Hiroshi Mukai
Takeo Miyake
Tomoyuki Hosaka
Taisuke Sugii
Takuya Watai
Eiji Ishii
Akiyasu Miyamoto
Takeo Miyake
Tomoyuki Hosaka
Taisuke Sugii
Takuya Watai
Eiji Ishii
Akiyasu Miyamoto
Application Number:
JP2019003271A
Publication Date:
November 15, 2022
Filing Date:
January 11, 2019
Export Citation:
Assignee:
Hitachi Astemo, Ltd.
International Classes:
F02M51/06; F02M61/10
Domestic Patent References:
| JP10318095A | ||||
| JP2014208998A | ||||
| JP2017089425A | ||||
| JP2016048064A |
Foreign References:
| DE102013218881A1 |
Attorney, Agent or Firm:
Polar Patent Attorney Corporation