Search International and National Patent Collections

1. (WO2016050164) PISTON RING WITH VARIABLE RADIAL THICKNESS

Pub. No.:    WO/2016/050164    International Application No.:    PCT/CN2015/090543
Publication Date: Fri Apr 08 01:59:59 CEST 2016 International Filing Date: Fri Sep 25 01:59:59 CEST 2015
IPC: F02F 5/00
F16J 9/00
Applicants: ASIMCO SHUANGHUAN PISTON RING (YIZHENG) CO., LTD.
仪征亚新科双环活塞环有限公司
Inventors: WU, Yingxue
吴映雪
HU, Min
胡敏
LIU, Qianxi
刘千喜
ZHOU, Yueting
周月亭
Title: PISTON RING WITH VARIABLE RADIAL THICKNESS
Abstract:
A piston ring (10) with variable radial thickness. The piston ring (10) comprises a ring body (11) having an opening (12). When the piston ring (10) is mounted, on the two sides of the opening (12) in symmetry, the inner radius R2 of the ring body (11) in a circumferential sector area forming an angle of 1-90 degrees with the center line of the opening (12) is greater than the inner radius R1 of the ring body (11) in a circumferential sector area forming an angle of 90-180 degrees with the center line of the opening (12). By means of the piston ring, the problem in the prior art of severe wear of an external circular surface, at an opening, of a piston ring in an engine with high thermal load is solved, the durability of the piston ring is improved, and further, the durability of the engine is improved.