Title:
FUEL INJECTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/154955
Kind Code:
A1
Abstract:
This fuel injection device is provided with valve mechanisms (100, 200) and a driving part (30). The valve mechanisms have: first control valve bodies (110, 210) which are driven by the driving part to open/close an outflow opening part (28); hydraulically actuated valve bodies (120, 220) which perform opening/closing of an inflow opening part (27) by means of a pressure difference; and second control valve bodies (130, 230) driven by the driving part through the first control valve bodies. When first driving energy is input to the driving part, the second control valve bodies maintain seated states on the hydraulically actuated valve bodies. When second driving energy is input to the driving part, the second control valve bodies are separated from the hydraulically actuated valve bodies. According to the seating and separation of the second control valve bodies, the flow channel areas of communication passages (121, 221), which communicate an upper control chamber part 42 and a lower control chamber part (43), are switched.
Inventors:
TANADA HIROKI (JP)
Application Number:
PCT/JP2017/046328
Publication Date:
August 30, 2018
Filing Date:
December 25, 2017
Export Citation:
Assignee:
DENSO CORP (JP)
International Classes:
F02M45/08; F02D41/38; F02M47/00; F02M61/16; F16K31/02
Foreign References:
| JP2001221119A | 2001-08-17 | |||
| JP2002364483A | 2002-12-18 | |||
| JP2002349383A | 2002-12-04 | |||
| JP2008309015A | 2008-12-25 | |||
| JP2008202417A | 2008-09-04 |
Attorney, Agent or Firm:
JIN Shunji (JP)
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