SERVICE EXPERIENCE WITH A PURPOSE-DESIGNED MEDIUM-SPEED HEAVY-FUEL ENGINE

After pointing out the importance of cylinder liner temperature in the design of Diesel engines that run on heavy fuel, the Author (of the Wartsila Vasa factory) discusses the design of the Vasa 32 engine together with service experience with this medium-speed trunk-piston engine. Introduced in 1977, the Vasa 32 has found a wide range of marine applications (both as a main and as an auxiliary engine), as well as land-based applications. More than 100 are now in service. See also Abstract No. 57,133 (Mar. 1982). Aspects discussed (in some detail) include: liner temperatures and wear rates; designing to overcome exhaust valve problems; exhaust valve materials (a ferritic martensitic steel has given the best performance); bearings and lubrication system; introduction of tin/aluminium main bearings; preference for cast-on copper/lead big-end bearings. It can be concluded, from the feedback of service information, that the principal design aims have been achieved in the Vasa 32, and that it is well suited for today's heavy fuels and provides a sound basis for development to meet deteriorating fuel qualities.

• Supplemental Notes:
  • Motor Ship, 63 <1982>, p.32 <Oct.> (4 pp., 1 tab., 1 graph, 7 diag., 2 phot.)
• Authors:
  • Rosgren, C E
• Publication Date: 1982

Language

• English

Subject/Index Terms

• Subject Areas: Marine Transportation;

Filing Info

• Accession Number: 00684253
• Record Type: Publication
• Source Agency: British Maritime Technology
• Files: TRIS
• Created Date: Aug 14 1995 12:00AM