Title:
可変圧縮装置及びエンジンシステム
Document Type and Number:
Japanese Patent JP6946977
Kind Code:
B2
Abstract:
The variable compression device (A) includes: a piston rod (6) whose end portion is provided with a flange (6c); a fluid chamber (R3) that causes the piston rod to be moved in a direction in which a compression ratio is increased by a pressurized working fluid being supplied thereto; a regulation member (7c) that is provided such that the flange is interposed between the regulation member and the fluid chamber, and regulates movement of the piston rod in the direction in which the compression ratio is increased; a regulation member-side fluid chamber (R7) that is provided between the flange and the regulation member with the flange forming a bottom surface of the regulation member-side fluid chamber; a supply flow path (R6) that supplies a cooling fluid to the regulation member-side fluid chamber; and a piston rod internal flow path (R8) that includes an opening end on the bottom surface and guides the cooling fluid in the regulation member-side fluid chamber to an inside of the piston rod.
Inventors:
Hiroshi Masuda
Kazuki Yotsui
Kazuki Yotsui
Application Number:
JP2017228333A
Publication Date:
October 13, 2021
Filing Date:
November 28, 2017
Export Citation:
Assignee:
Ihi Co., Ltd.
International Classes:
F02B75/04; F02B23/00; F02B75/32; F02D15/02; F02F1/18
Domestic Patent References:
| JP2016211462A | ||||
| JP2007177751A | ||||
| JP7197910A | ||||
| JP2014020375A |
Foreign References:
| DE19835146A1 | ||||
| WO2015108178A1 |
Attorney, Agent or Firm:
Nishizawa Kazumi
Mitsuo Teramoto
Yuichiro Shimizu
Hisanori Takahashi
Mitsuo Teramoto
Yuichiro Shimizu
Hisanori Takahashi