Modeling of the stresses imposed by the thermal and pressure loads in diesel engines has indicated that properly designed and processed multilayer thermal barrier coatings can tolerate full load and transient conditions. Initial rig tests have shown that these coatings survive thermal excursions that are greater than predicted for diesel engines, without cracking or other evidence of deterioration. The 2.0 to 2.5 mm thick thermal barrier coatings on piston and cylinder head combustion surfaces are projected to reduce in-cylinder heat rejection by 40 percent. This reduction results in predicted fuel economy benefits of 1.5 percent for a turbocharged diesel and 3 percent for a turbocompound diesel.

Media Info

  • Features: References;
  • Pagination: 6p.

Subject/Index Terms

Filing Info

  • Accession Number: 00658149
  • Record Type: Publication
  • Source Agency: Maritime Technical Information Facility
  • Files: TRIS
  • Created Date: Jul 21 1994 12:00AM