Piston Ring
Dossier Overview
Applicant
TPR Co., Ltd.
Inventor
Takashi Aoki; Hiroyuki Nagakura; Shinsuke Ooura; Kiyoyuki Kawai; Osamu Yoneyama
IPC Classification
CPC Classification
Provided is a piston ring that is used in an internal combustion engine that uses a hydrogen gas fuel. In the piston ring, the piston ring satisfies 0.75≤FPS in a case in which: the transverse rupture index of the piston ring in a case in which a transverse test is conducted under a predetermined condition is taken as FP1; the post-corrosion transverse rupture index of the piston ring in a case in which the transverse test is conducted after a corrosion test is conducted in which the piston ring is immersed in a 1% aqueous nitric acid solution for 30 minutes is taken as FP2; and the transverse rupture strength maintenance rate FPS of the piston ring is defined as FPS=FP2/FP1.
Original (Chinese)
Provided is a piston ring that is used in an internal combustion engine that uses a hydrogen gas fuel. In the piston ring, the piston ring satisfies 0.75≤FPS in a case in which: the transverse rupture index of the piston ring in a case in which a transverse test is conducted under a predetermined condition is taken as FP1; the post-corrosion transverse rupture index of the piston ring in a case in which the transverse test is conducted after a corrosion test is conducted in which the piston ring is immersed in a 1% aqueous nitric acid solution for 30 minutes is taken as FP2; and the transverse rupture strength maintenance rate FPS of the piston ring is defined as FPS=FP2/FP1.
External Resources