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1. (WO2017034619) VALVE STEM SEAL ASSEMBLY WITH HEAT DISSIPATING RETAINER

Pub. No.:    WO/2017/034619    International Application No.:    PCT/US2016/025202
Publication Date: Fri Mar 03 00:59:59 CET 2017 International Filing Date: Fri Apr 01 01:59:59 CEST 2016
IPC: F01L 3/08
Applicants: DANA AUTOMOTIVE SYSTEMS GROUP, LLC
Inventors: HEGEMIER, Timothy, A.
HELLER, Thomas, G.
Title: VALVE STEM SEAL ASSEMBLY WITH HEAT DISSIPATING RETAINER
Abstract:
A valve stem seal assembly has a valve stem seal and a top sealing valve seal retainer that extends down the outside of the valve stem seal from its top, where a plurality of heat dissipating features are unitarily formed about the outside of the retainer. The heat dissipating features are selected from a group consisting of fins and corrugated alternating indentations and protrusions. The valve stem seal may be formed from a nanocomposite material that includes a polymer host material and a nanomaterial that includes chemically functionalized carbon nanotubes. The valve stem seal is in sealing contact with the engine valve stem. Such a valve stem seal could replace conventional valve stem seals in all valve stem seal assemblies, no matter what the shape and placement of the oil and gas lips.