Piston ring

Details Piston ring Piston ring

F - Mech Eng,Light,Heat,Weapons

16

J

123/245, 277/28

F16J 15/32 (2006.01) F16J 15/56 (2006.01)

Patent

CA 1320517

ABSTRACT A piston (10) and piston rings (16, 17, 18) assembly. The piston rings (16, 17, 18) include a flat cylindrical face (20) and a support structure for supporting the face (20) such that under load the ring deflects so that the. face (20) forms a hydrodynamic wedge between the face 20 and the cylinder wall. The support structure includes a pair of circumferential ligaments (22, 24, 34, 36, 45, 46) arranged relative to the face (20) of the ring 50 as to intersect at a point (25) in front of the face 25. The support structure may further include dog legs (37, 38, 47, 48). The face (20) may include scraping edges (42, 44). The piston ring may include an oil duct (50).

605354

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