RING DYNAMICS IN A DIESEL ENGINE AND ITS EFFECT ON OIL CONSUMPTION AND BLOWBY

Measurements of cylinder and inter-ring pressures and top ring axial movement were made on a 4-stroke V8 diesel engine running at full power, in order to understand differences in observed oil consumption and blowby for 5 different ring and piston combinations. In each case the parameters were also calculated using a newly developed computer program which combines the effects of ring lift and twist, inter-ring gas pressures, ring profile and tension and liner finish on ring hydrodynamics and gas flow. Encouraging correlation was shown between measured and predicted results.

• Supplemental Notes:
  • State-of-the-Art on Design and Performance of Diesel Power Cylinder Components SP-552. International Off-Highway Meeting and Exposition Milwaukee, Wisconsin, September 12-15, 1983.
• Corporate Authors:

  Society of Automotive Engineers (SAE)

  400 Commonwealth Drive
  Warrendale, PA  United States  15096
• Authors:
  • Truscott, R
  • Reid, T
  • Ruddy, B
• Publication Date: 1983-9

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 11-23
• Serial:
  • Publication of: Pergamon Press Limited
  • Publisher: Pergamon Press, Incorporated

Subject/Index Terms

• TRT Terms: Blowby; Diesel engines; Dynamics; Fuel consumption; Testing
• Uncontrolled Terms: Ring test
• Subject Areas: Energy; Safety and Human Factors;

Filing Info

• Accession Number: 00381943
• Record Type: Publication
• Source Agency: National Highway Traffic Safety Administration
• Report/Paper Numbers: SAE 831282, HS-036 087
• Files: HSL, USDOT
• Created Date: Mar 30 1984 12:00AM