POWER TRANSMISSION COMPONENT COMPRISING A LUBRICATING DISTRIBUTION VALVE SUBJECTED IN A COUPLING HUB OF A FRICTION COUPLING AND A MEMBER FOR COORDINATED OPERATION OF THE FRICTION COUPLING AND OF THE LUBRICATION DISTRIBUTION VALVE

摘要

Disclosed is a power transmission component that includes a clutch, a valve, and a ball ramp mechanism. The clutch has a hub, a housing, a clutch pack and a pressure plate. The clutch pack includes sets of friction plates mounted on the hub and the housing. The valve includes a valve member received in a bore in the hub, an inlet and an outlet. The ball ramp mechanism includes first and second ball ramp rings and is operable to selectively displace the pressure plate to urge the friction plates against the housing and to displace the valve element to open the valve. The second ball ramp ring is coupled to the hub for rotation therewith. The first ball ramp ring is rotatable relative to the second ball ramp ring.