| 摘要 |
<p>An engine turbocharger, particularly of the two-cycle diesel type for railway locomotives and other applications, has a rotor (14) with an overhung compressor supported by a compressor journal bearing (36) and fixed thrust flange (46) combination. The bearing (36) combines a multi- (two) lobed, offset cylindrical wedge-film inner surface (58,59) with a close clearance squeeze-film outer surface (66,67,68) that causes the bearing (36) to float laterally in a support member (38) to damp shaft run-out whilst supporting the rotor (14) on load-controlling oil wedges. The fixed flange (46) provides thrust control and provides a loose pin connection (51,54) with the bearing (36) that prevents rotation thereof whilst permitting its squeeze-film damping lateral motion to occur. Particular pressure lubrication means (70,71,72,74,76,78) provide oil to the interior surface and exterior surface of the bearing (36) in adequate quantity for the oil-wedge supporting and squeeze-film damping functions of the bearing (36). <IMAGE> <IMAGE></p> |
