Piston oil control ring

Details Piston oil control ring Piston oil control ring

F - Mech Eng,Light,Heat,Weapons

16

J

277/33

F16J 9/06 (2006.01) F16J 9/20 (2006.01)

Patent

CA 1063638

PISTON OIL CONTROL RING Abstract In a composite oil control ring for reciprocat- ing piston internal combustion engines which includes a relatively soft parted cast iron ring and an expander- spring disposed internally of the ring to bias the same into sealing engagement with a cylinder wall, a parted annular insert rail of wear-resistant metal is disposed between the expander and the ring to reduce wear on the ring and to prevent embedment or unitization of the ring and spring. The insert rail is generally V-shaped in radial cross section to provide an enhanced bearing area for sliding between the insert and spring, and to reduce potential blockage by the spring of aligned oil drain ports in the insert and the ring. -i-

280623

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