Piston ring

Details Piston ring Piston ring

F - Mech Eng,Light,Heat,Weapons

16

J

277/28

F16J 9/00 (2006.01) F16J 9/20 (2006.01)

Patent

CA 1088971

ABSTRACT OF THE DISCLOSURE An improved piston ring has at least one pumping means including a hydrodynamic cavity in a lower face of the ring. The hydrodynamic cavity traps oil, and the pumping means forces the oil to the underside of the ring and out of the ring groove to the clearance space between the piston and the engine cylinder bore, minimizing the amount of oil permitted to reach the combustion chamber.

290229

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