Patent ID: 11959552
Assignee: FEDERAL-MOGUL BURSCHEID GMBH
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. A piston ring system for an internal combustion engine, comprising
a first compression piston ring,
a second compression piston ring, which is configured to be located below the first compression piston ring, and
an oil scraper piston ring, which is configured to be arranged below the first and second compression rings,
wherein the first compression piston ring has
a first ring body comprising
a first upper ring flank,
a first lower ring flank,
a first ring inner side,
a first ring outer side, as well as
two first abutting surfaces,
wherein a first contact region of the first ring body is arranged with a cylinder running surface above a first piston ring center,
wherein at least one first oil pocket is arranged below the first contact region in the circumferential direction,
wherein the second compression piston ring comprises
a second ring body comprising
a second upper ring flank,
a second lower ring flank,
a second ring inner side,
a second ring outer side, as well as
two second abutting surfaces,
wherein a second contact region of the second ring body is arranged with the cylinder running surface above or below a second piston ring center,
wherein at least one second oil pocket is arranged below the second contact region in the circumferential direction, and wherein the at least one second oil pocket is divided into 20 to 30 sections in the circumferential direction, and
wherein the oil scraper piston ring is formed in one piece, two pieces, or three pieces.