MIT Self-Compensating Hydrostatic Bearings - PowerPoint PPT Presentation

mit self compensating hydrostatic bearings n.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
MIT Self-Compensating Hydrostatic Bearings PowerPoint Presentation
Download Presentation
MIT Self-Compensating Hydrostatic Bearings

play fullscreen
1 / 4
MIT Self-Compensating Hydrostatic Bearings
478 Views
Download Presentation
ganesa
Download Presentation

MIT Self-Compensating Hydrostatic Bearings

- - - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript

  1. MIT Self-Compensating Hydrostatic Bearings 26 February 2010 Professor Alex Slocum Gerald Rothenhofer Matt Angle

  2. A Quick Primer on Hydrostatic Bearings High-Pressure Lubricant • Are Used to Support the Crankshaft in Automotive Engines • Pump Forces Fluid Into a Channel and then Between a Shaft and Journal • Shaft Rides on Thin Film of Fluid • Metal-to-Metal Contact and Friction are Reduced Bearing Journal Shaft

  3. Issues with Non-Self Compensating Hydrostatic Bearings • Small Orifices • Used to Create Constant-Pressure Fluid Supply • Are Easily Clogged by Contaminants in Fluid (Especially Sea Water) • Control Loops • ?? • Water Hammer • High Flow Rates Cause Turbulence in Fluid Exit • Shaft Can Oscillate in Unsteady Flow

  4. Why ours is cool • Supply Grooves • Oriented on Inside of Bearing Assembly (Made of Two of These Pieces) • Extend ~180° to Pocket on Opposite Side of Bearing • Function as Orifices in Non-Compensating Bearings • Are Self-Cleaning and Difficult to Clog • Pockets • Bear Load of Shaft • Fed by Supply Channels • How it Works • When Shaft is Displaced, Supply Grooves are Blocked, Pressure Reduced in Pockets on Opposite Side of Shaft • Produces Restoring force