LUBRICATION OF JOURNAL BEARING DURING CLOCKWISE AND COUNTER-CLOCKWISE ROTATION

摘要

The present disclosure is applicable to all gear trains using a journal bearing as a means of supporting gear shaft rotation. It is related in some embodiments to a system and method for supplying lubricant to the journal bearings of a gear-turbofan engine gear train when the fan rotor is subjected to a wind-milling condition in both directions, either clockwise or counter-clockwise.

主权项

1. A gear system, comprising:
a shaft; and a lubrication system, the lubrication system comprising:
a gear including a gear bearing surface, the gear operatively driven by the shaft; anda pump operatively driven by the gear, the pump including a pump inlet and a pump outlet; wherein rotation of the gear below a predetermined operational speed range in either direction causes the pump to transfer lubricant to the gear bearing surface.