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Study of the periodic thermal contact between exhaust valve and its seat in an internal combustion engine
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Mechanics of Materials and Plant Maintenance Research Laboratory (LR3MI), Badji Mokhtar University, Annaba, Algérie
Energy Systems Technology Laboratory (LTSE), Higher National School of Technology and Engineering, Annaba, Algérie
Faculty of Sciences and Technologies, Higher School of Industrial Technology, Annaba, Algérie
Online publication date: 2023-03-31
Publication date: 2023-03-31
Eksploatacja i Niezawodność – Maintenance and Reliability 2023;25(2):162911
  • Heat flux increases with increasing contact frequency.
  • Thermal diffusivity greatly affects conductive transfer.
  • Manufacturers can use this model to assess the cylinder head's temperature field.
  • Automotive industry can use this model to improve the heat transfer of internal combustion engine.
The focus of internal combustion engine development for urban vehicles is shifting towards reducing materials by making them lighter. In order to maintain thermal and flow levels, a model was developed to study the thermal behavior of valve seats during periodic contact, which can also help improve engine performance and fuel efficiency. The model, composed of two cylindrical bars in periodic contact, takes into account the evolution and topography of the contact surface. The model's performance was evaluated through various experimental studies and showed a maximum difference of 5.05% with experimental values, in good agreement with previous literature. The results showed that heat flux increases with increasing contact frequency and thermal diffusivity affects conductive transfer. This model can be used by manufacturers to evaluate cylinder head temperature and by the automotive industry to improve heat transfer in engines.
The authors gratefully acknowledge the Algerian Ministry of Higher education and Scientific Research. This research is a result from PRFU project A11N01EP230220220001 funded in Algeria by The Directorate-General for Scientific Research and Technological Development (DGRSDT).
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