A Study of Lubrication Characteristics on Valve Stem Seals for Automobile Engines

Valve stem seals are important to control consumption of lubricating oil for engines and to prevent an air pollution problem by unclean exhaust. It is required for valve stem seals to have stable characteristics of a controlled oil leakage related to frictional characteristics.

In this papor, the concept of designing valve stem seals which possess the above characteristics have been discussed by applying an inverse problem of hydrodynamic lubrication.