Title:
FUEL INJECTION VALVE
Document Type and Number:
Japanese Patent JP2019100208
Kind Code:
A
Abstract:
To provide a fuel injection valve with an improved corrosion countermeasure.SOLUTION: A fuel injection valve 10 comprises a valve body 24 (body) provided with an injection hole to inject fuel and a valve needle (valve) which opens and closes the injection hole. The valve body 24 has a base material 241, a corrosion protection layer 242 and a dispersion prevention layer 243. The base material 241 is made of metal and provided with the injection hole. The corrosion protection layer 242 covers at least a surface of a portion of the base material 241 where the injection hole is formed and is made of a material with higher corrosion resistance than the base material 241. The dispersion prevention layer 243 is positioned between the base material 241 and the corrosion protection layer 242 and is made of a material which causes less dispersion of a metallic composition of the base material 241 than the corrosion protection layer 242.SELECTED DRAWING: Figure 4
Inventors:
YAMASHITA TSUKASA
SERIZAWA KAZUFUMI
SERIZAWA KAZUFUMI
Application Number:
JP2017229422A
Publication Date:
June 24, 2019
Filing Date:
November 29, 2017
Export Citation:
Assignee:
DENSO CORP
International Classes:
F02M61/16; F02M47/00; F02M51/06
Domestic Patent References:
| JPH05209575A | 1993-08-20 | |||
| JP2009504408A | 2009-02-05 |
Foreign References:
| US20140097275A1 | 2014-04-10 | |||
| US20160230274A1 | 2016-08-11 | |||
| US20170321645A1 | 2017-11-09 | |||
| WO2008059971A1 | 2008-05-22 | |||
| WO2016178372A1 | 2016-11-10 |
Attorney, Agent or Firm:
Kazuyuki Yahagi
Taihei Nonobe
Takanori Kubo
Taihei Nonobe
Takanori Kubo