✦ LIBER ✦

Metallic cylinder head gasket

Publisher: Elsevier Science
Year: 2009
Tongue: English
Weight: 269 KB
Volume: 2009
Category: Article
ISSN: 1350-4789
DOI: 10.1016/s1350-4789(09)70397-6

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✦ Synopsis

This patent describes a piston ring that is claimed to provide reduced friction and wear. The design allows independent adjustment of the parameters controlling friction and wear to eliminate the trade off between low friction and low wear typical of prior art rings. The contact interface area between the ring and the bore surface is divided into a seal zone and bearing zones. Radial ports in the ring create the separate zones and ensure that the bearing zone is not subjected to pressure differential.

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the rotor becomes considerably spaced from the stationary seal ring. The frictional engagement of the secondary seal O-ring prevents the seal ring from tracking the rotary seal ring, and thus from closing this gap. This problem is exacerbated when the mechanical seal is shut down, and the : rotor ax