Investigation of the effect of different carbon film thickness on the exhaust valve

KARAMANGİL M. İ., Avci A., Bilal H.

HEAT AND MASS TRANSFER, vol.44, no.5, pp.587-598, 2008 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 44 Issue: 5
  • Publication Date: 2008
  • Doi Number: 10.1007/s00231-007-0271-6
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.587-598
  • Bursa Uludag University Affiliated: Yes


Valves working under different loads and temperatures are the mostly forced engine elements. In an internal combustion engine, pressures and temperatures affecting on the valves vary with fuel type and the combustion characteristics of the fuel. Consequently, valves are exposed to different dynamic and thermal stress. In this study, stress distributions and temperature profiles on exhaust valve are obtained depending on different carbon film thickness. It is concluded that heat losses and valve temperatures decrease and valve surfaces are exposed to less thermal shocks with increasing carbon film thickness.