Title:
燃料噴射弁
Document Type and Number:
Japanese Patent JP6412379
Kind Code:
B2
Abstract:
A fuel injection valve of the present invention is provided with: a valve seat member 15 that has a valve seat 15b and a fuel introduction hole 15e that is formed on the downstream side of the valve seat 15b and penetrates through a lower end surface 15t; a valve body 17 for opening and closing a fuel channel in collaboration with the valve seat 15b; and a nozzle member 21n in which fuel injection holes 110-3, 110-8 are formed radially outward from an inner circumferential surface of the fuel introduction hole 15e and which is fixed to the lower end surface 15t. The nozzle member 21n has a protruding section 21na, and a fuel diffusion chamber 21a that allows fuel to flow radially outward is formed on the inside of the protruding section 21na. A protruding section 17c is formed at a distal end of the valve body 17, and when the valve is closed, the protruding section 17c penetrates through the fuel introduction hole 15e and protrudes out to the fuel diffusion chamber 21a side. Due to this configuration, a dead volume formed on the downstream side of a fuel sheet section can be reduced, and the flow speed of the fuel flowing into the fuel injection holes can be improved.
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Inventors:
Takahiro Saito
Minoru Hyodo
Nobuaki Kobayashi
Mountain Saki Akihiro
Kazuki Yoshimura
Minoru Hyodo
Nobuaki Kobayashi
Mountain Saki Akihiro
Kazuki Yoshimura
Application Number:
JP2014189693A
Publication Date:
October 24, 2018
Filing Date:
September 18, 2014
Export Citation:
Assignee:
Hitachi Automotive Systems, Ltd.
International Classes:
F02M61/18; F02M51/06
Domestic Patent References:
| JP2001046919A | ||||
| JP2006177174A | ||||
| JP2013234598A | ||||
| JP2013522535A | ||||
| JP201466186A | ||||
| JP201477385A |
Attorney, Agent or Firm:
Polaire Patent Business Corporation