Piston Design for High Combustion Pressures and Reduced Heat Rejection to Coolant 820505
As an alternative to the standard aluminum piston construction a gallery cooled one piece (so called Monobloc) spheroidal graphite cast iron piston has been developed for use in heavy duty Diesel engines. It allows for 3000 psi (207 bar) combustion pressure. Due to about 180 F (100°C) higher average crown surface temperature it takes less heat from the combustion chamber. A further reduction of the heat loss to the coolant can be obtained by an uncooled, composite piston. Based on a 2-dimensional FEM analysis a reduction of 60% is predicted for a design with metal top. A ceramic top does not promise a significantly greater effect.
Citation: Wacker, E. and Sander, W., "Piston Design for High Combustion Pressures and Reduced Heat Rejection to Coolant," SAE Technical Paper 820505, 1982, https://doi.org/10.4271/820505. Download Citation
Author(s):
Erich Wacker, Wilfried Sander
Affiliated:
Karl Schmidt GmbH
Pages: 15
Event:
SAE International Congress and Exposition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
The Adiabatic Engine-Past, Present and Future Developments-PT-28, SAE 1982 Transactions-V91-A
Related Topics:
Combustion chambers
Diesel / compression ignition engines
Combustion and combustion processes
Pistons
Coolants
Aluminum
Ceramics
Graphite
Iron
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