Title:
弁機構
Document Type and Number:
Japanese Patent JP6968773
Kind Code:
B2
Abstract:
To provide a valve mechanism which secures a flow rate necessary for a flow passage, and can prevent a change of a flow rate characteristic caused by the wear of an inlet or the like of a downstream-side throttle resulting from erosion.SOLUTION: A valve body 62 and an energization member are arranged inside a high-pressure side flow passage 60 being a region at a high-pressure piping side with respect to a valve seat face 65 in a flow passage 60. A valve mechanism 50 comprises a low-pressure side throttle 71 in a low-pressure side flow passage 60b being a region at a low-pressure piping side with respect to the valve seat face 65 in the flow passage 60, an alleviation space 72 whose flow passage cross section area is expanded between the valve seat face 65 and the low-pressure side throttle 71, and an injection passage 73 for connecting items between the valve seat face 65 and the alleviation space 72. An injection center line being a linear line parallel with an injection direction, and passing a center of an injection passage cross section is arranged so as to avoid a low-pressure side throttle minimum cross section.SELECTED DRAWING: Figure 4
Inventors:
Abe Yuki
Ueda Tomio
Hideno Kino
Ueda Tomio
Hideno Kino
Application Number:
JP2018177580A
Publication Date:
November 17, 2021
Filing Date:
September 21, 2018
Export Citation:
Assignee:
Hitachi Astemo, Ltd.
International Classes:
F02M55/02; F02M59/46; F02M61/16; F16K1/52; F16K47/02
Domestic Patent References:
| JP201212950A | ||||
| JP2000240528A | ||||
| JP200895521A | ||||
| JP8210219A | ||||
| JP201661198A | ||||
| JP269188U | ||||
| JP200697546A |
Attorney, Agent or Firm:
Creation International Patent Office