EFFECT OF PISTON DEPOSITS, FUEL SULFUR, AND LUBRICANT VISCOSITY ON DIESEL ENGINE OIL CONSUMPTION AND CYLINDER BORE POLISHING

The purpose of this paper is to define the factors which affect oil consumption and cylinder bore polishing. The investigation focused on top land deposits, fuel sulfur, and lubricant viscosity in a series of direct-injection diesel engine tests in the U. S. and Europe. In these engine tests it was demonstrated that excessive top land deposits cause high oil consumption and cylinder bore polishing. Cylinder bore polishing can also be caused by corrosion when high sulfur fuels are used with oils of low alkalinity values. Maintenance of the crosshatch honing pattern is critical to oil control, low ring wear, and prevention of ring scuffing. Low oil consumption and low cylinder bore polishing can be achieved with lubricant formulations which minimize the top land deposit and provide sufficient alkalinity to minimize the corrosive aspect of bore polishing. In addition to the top land deposit and fuel sulfur factors, multigrade oils showed a significant oil control advantage in certain engines; and a theoretical explanation of this phenomenon is presented.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/01487191
• Supplemental Notes:
  • Fuels and Lubricants Meeting San Francisco, California, October 31-November 3, 1983.
• Corporate Authors:

  Society of Automotive Engineers (SAE)

  400 Commonwealth Drive
  Warrendale, PA  United States  15096
• Authors:
  • McGeehan, J A
• Publication Date: 1983

Media Info

• Features: Appendices; Figures; References; Tables;
• Pagination: 22 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: Diesel engines; Fuel consumption; Lubricating oils; Mineral deposits; Pistons; Sulfur; Testing; Viscosity
• Old TRIS Terms: Cylinder bore polishing; Deposits; Oil consumption
• Subject Areas: Energy; Geotechnology; Safety and Human Factors;

Filing Info

• Accession Number: 00381957
• Record Type: Publication
• Source Agency: National Highway Traffic Safety Administration
• Report/Paper Numbers: SAE 831721, HS-036 101
• Files: HSL, USDOT
• Created Date: Mar 30 1984 12:00AM