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Piston Design for High Combustion Pressures and Reduced Heat Rejection to Coolant
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English
Abstract
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.
Topic
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.Also In
References
- Nodular Cast Iron Monobloc Pistons Diesel and Gas Turbine July/August 1980
- Wacker E. Simulation of the Piston Ring Groove Wear on a Model Test Rig Thesis Techn. Univ. of Clausthal 1977
- An Assessment of the Effect of Combustion Chamber and Exhaust Port Insulation on the Diesel Engine Ricardo Consulting Engineers
- Stang, J. Designing Adiabatic Engine Components SAE-Paper 78 0069 Detroit Feb/Mar 1978
- Kamo, R. Bryzik, W. Cummins-TARADCOM Adiabatic Turbocompound Engine Program SAE-Paper 81 00 70 Detroit Feb. 1981
- Henry Wiggin & Company Ltd. February 1978