Lubrication system for engines with overhead camshaft has seal with sealing ring to remove excess oil from camshaft bearing to component for lubrication

摘要

The engine has a seal (64) with a sealing ring (66) around a bore (62). Oil guide fingers (68) on the ring pass excess oil away from the bore and towards a component for lubrication. The bore is a spark plug bore in a cylinder head (14), which also has a cross bridging surface (60) bridging the bore and a camshaft bearing unit (42), and the seal. The seal is held about the bore by the bridging surface. Excess oil flows from the bearing unit along the bridging surface and around the sealing ring.