公开(公告)号：US20170175893A1

公开(公告)日：2017-06-22

申请号：US15034657

申请日：2015-03-30

Applicant: TPR CO., LTD.

Inventor： Hironori FUJITA ,  Kentaro KAWANO

IPC: F16J9/20 ,  F02F1/00 ,  F16J9/26 ,  F02F3/00

CPC classification number: F16J9/203 ,  C23C14/0611 ,  C23C14/0641 ,  C23C14/325 ,  F02F5/00 ,  F16J9/06 ,  F16J9/064 ,  F16J9/066 ,  F16J9/067 ,  F16J9/068 ,  F16J9/20 ,  F16J9/206 ,  F16J9/26

Abstract: In a combination oil ring, when a line passing through a center of a segment width is a first intermediate line, a length of a line segment between a position on an engine combustion chamber side and a position on a side distant from the engine combustion chamber on a contour curve at a position at a distance of 3 μm from an outer peripheral vertex toward an inner peripheral side in a segment radial direction is L, and an intermediate line of the line segment L is a second intermediate line, the second intermediate line is located on the side more distant from the engine combustion chamber than the first intermediate line, and the outer periphery vertex of the segment is located on the second intermediate line or on the side more distant from the engine combustion chamber than the second intermediate line.