主权项 |
1. A rotor assembly of a variable cam timing phaser comprising:
an outer diameter with vanes extending therefrom; and a bore having an inner diameter comprising a plurality of passages extending from the inner diameter of the bore to the outer diameter of the rotor assembly, each of the passages having a first port on the inner diameter and a second port on the outer diameter of the rotor assembly; and a pattern of pockets surrounding each of the first ports on the inner diameter of the bore, the pattern comprising a plurality of lands enclosing each of the first ports on at least three sides, such that the first ports are on a same plane of the rotor assembly and the lands form a continuous circumferential seal groove, sealing each of the first ports from other first ports. |