OIL FILM THICKNESS IN A BEARING OF A FIRED ENGINE PART III: THE EFFECTS OF LUBRICANT RHEOLOGY

This is the third interim report describing oil film thickness measurements in a bearing of a fired single cylinder engine. The minimum oil film thickness (MOFT) in the front main crankshaft bearing of a fired CLR (Cooperative Lubricants Research) engine has been measured using a capacitance technique. The effects of base stock viscosity, VI improver type and concentration, and finished oil viscosity at both high and low shear rates are presented and discussed. Five VI improvers are compared, and are found to have varying degrees of effectiveness in increasing MOFT in a given formulation and base stock. The shear rate and temperature of the viscosity measurement are found to affect the overall correlation between MOFT and oil viscosity.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/01487191
• Supplemental Notes:
  • To be presented at the Society of Automotive Engineers Meeting San Francisco, California, October 31-November 4, 1983.
• Corporate Authors:

  Society of Automotive Engineers (SAE)

  400 Commonwealth Drive
  Warrendale, PA  United States  15096
• Authors:
  • Girshick, F
  • Craig, R C
• Publication Date: 1983

Media Info

• Features: Appendices; Figures; References; Tables;
• Pagination: 11 p.
• Serial:
  • SAE Technical Paper
  • Publisher: Society of Automotive Engineers (SAE)
  • ISSN: 0148-7191
  • EISSN: 2688-3627
  • Serial URL: http://papers.sae.org/

Subject/Index Terms

• TRT Terms: Journal bearings; Measurement; Measures of effectiveness; Oil additives; Oil spills; Rheology; Shear rate; Temperature; Thickness; Thin films; Viscosity
• Uncontrolled Terms: Effectiveness
• Old TRIS Terms: Oil-film-thickness
• Subject Areas: Safety and Human Factors;

Filing Info

• Accession Number: 00387442
• Record Type: Publication
• Source Agency: National Highway Traffic Safety Administration
• Report/Paper Numbers: SAE 831691, HS-036 799
• Files: HSL, USDOT
• Created Date: Aug 30 1984 12:00AM