This paper introduces a new hypereutectic aluminum alloy for piston casting, an improved casting process and a new re-melting procedure. The resulting microstructures improve the fatigue performance of the piston combustion bowl region exposed to severe cyclic thermal and mechanical loading in modern diesel engine applications. It is shown how composition and material properties of the new alloy increase the material's fundamental properties, compared to an existing hypereutectic alloy. The new casting process minimizes the occurrence of fine oxide inclusions which helps to exploit the fundamental material strength. Finally the paper describes the combustion bowl re-melting process and gives engine validation results to illustrate its considerable influence on premature fatigue failure.
High-Performance Cast Aluminum Pistons for Highly Efficient Diesel Engines
Sae Technical Papers
SAE World Congress & Exhibition ; 2007
2007-04-16
Conference paper
English
High-Performance Cast Aluminum Pistons for Highly Efficient Diesel Engines
British Library Conference Proceedings | 2007
|High-performance cast aluminium pistons for highly efficient diesel engines
Automotive engineering | 2007
|Aluminum pistons for diesel engines
Automotive engineering
|Aluminum pistons in automotive gasoline and diesel engines
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