Title:
燃料噴射装置
Document Type and Number:
Japanese Patent JP6642478
Kind Code:
B2
Abstract:
A fuel injection device includes a valve mechanism and a drive unit. The valve mechanism includes a first control valve body driven by a drive unit to open and close an outflow opening portion, a hydraulically actuated valve body for opening and closing an inflow opening portion by a pressure difference, and a second control valve body driven by the drive unit through the first control valve body. When a first drive energy is input to the drive unit, the second control valve body maintains a seated state on the hydraulically actuated valve body. When the second drive energy is input to the drive unit, the second control valve body is unseated from the hydraulically actuated valve body. According to the seating and unseating of the second control valve body, a flow channel area of a communication passage for communicating an upper control chamber portion with a lower control chamber portion is switched to another.
Inventors:
Yuki Tanada
Application Number:
JP2017031369A
Publication Date:
February 05, 2020
Filing Date:
February 22, 2017
Export Citation:
Assignee:
株式会社デンソー
International Classes:
F02M45/08; F02D41/38; F02M47/00; F02M61/16; F16K31/02
Domestic Patent References:
| JP2001221119A | ||||
| JP2002364483A | ||||
| JP2002349383A | ||||
| JP2008309015A | ||||
| JP2008202417A |
Attorney, Agent or Firm:
Kazuyuki Yahagi
Taihei Nonobe
Takanori Kubo
Taihei Nonobe
Takanori Kubo