Cam ring bearing for fuel delivery system

A bearing assembly for an associated fuel delivery system having a housing that rotatably receives a rotor carrying vanes thereon, and a cam ring rotatably received between the housing and rotor, and a yoke encompassing the cam ring and selectively movable relative to the housing to vary fuel flow from the system, the bearing assembly comprising:

• a hydrostatic and hydrodynamic bearing member including an annular surface having a central opening therethrough, the annular surface including a first, high pressure pad and a second, low pressure pad substantially diametrically opposite the first pad and separated by first and second lands.

A bearing assembly for an associated fuel delivery system having a housing that rotatably receives a rotor carrying vanes thereon, and a cam ring rotatably received between the housing and rotor, and a yoke encompassing the cam ring and selectively movable relative to the housing to vary fuel flow from the system, the bearing assembly comprising:

• a bearing member including an annular surface having a central opening therethrough, the annular surface including a first, high pressure pad and a second, low pressure pad substantially diametrically opposite the first pad and separated by first and second lands;
• and
• further comprising a vent passage extending through the bearing and communicating with the second, low pressure pad to prevent high pressure from building.