DEVELOPMENT OF PISTON RINGS FOR HIGH OUTPUT ENGINES IN EUROPE

A minimum of blow-by is achieved with the use of chromium plated or molybdenum coated rings that are sharp edged on one side. The proven chrome rings of the past can be significantly improved with respect to their scuff resistance and wear behavior by means of a new running surface topography. The service life of chromed rings is considerably lengthened as a result of the development of the so called layered chrome process. Plasma coatings -- as is generally known -- similarly provide the ring with an extended working life. However, they have the disadvantage of the occasional breakout in the coating. The plasma welded coating developed at Goetzewerke solves this problem and provides in addition a high wear capacity due to its extreme thickness. Coil spring loaded rings are chiefly used as oil scraping rings which guarantee a considerably lower scatter in oil consumption due to close tolerances for contact land and spring.

  • Supplemental Notes:
    • For Meeting held November 5-9, 1978.
  • Corporate Authors:

    American Society of Mechanical Engineers

    Two Park Avenue
    New York, NY  USA  10016-5990
  • Authors:
    • Dueck, G E
  • Publication Date: 1978

Media Info

  • Features: References;
  • Pagination: 6 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00190278
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Report/Paper Numbers: ASME 78-DGP-18
  • Files: TRIS
  • Created Date: Jun 30 1979 12:00AM