Title:
コンプレッションリング及び内燃機関の組み立て方法
Document Type and Number:
Japanese Patent JP6702537
Kind Code:
B2
Abstract:
To provide a technique which can suppress the damage of a compression ring caused by alcohol fuel products accumulated at a joint end face, in the compression ring which is arranged in an alcohol fuel internal combustion engine.SOLUTION: A compression ring 10 arranged in a ring groove formed at a piston attached to a cylinder of an alcohol fuel internal combustion engine has: a ring main body; and a pair of joint end faces 1, 2 provided at the ring main body and for forming a joint space 7 by opposing each other in a state that the compression ring is attached to the cylinder. The joint space has: a first region 71 whose end face interval being an interval between the pair of joint end faces is relatively narrow; and a second region 72 whose end face interval is relatively wider than the first region, and which is adjacent to the first region and is connected to a peripheral space of the compression ring.SELECTED DRAWING: Figure 6
Inventors:
Masayuki Ohira
Akio Urushido
Noriaki Ayuzawa
Akio Urushido
Noriaki Ayuzawa
Application Number:
JP2018087385A
Publication Date:
June 03, 2020
Filing Date:
April 27, 2018
Export Citation:
Assignee:
TPR Co., Ltd.
International Classes:
F16J9/12; F02F5/00
Domestic Patent References:
| JP2009536285A | ||||
| JP2008232068A | ||||
| JP200617287A | ||||
| JP2000337508A | ||||
| JP280261U | ||||
| JP2010151013A |
Attorney, Agent or Firm:
Akira Hirakawa
Katsuhiko Imahori
Toshiaki Shimoda
Katsuhiko Imahori
Toshiaki Shimoda