High-Performance Cast Aluminum Pistons for Highly Efficient Diesel Engines

2007-01-1438

04/16/2007

Event
SAE World Congress & Exhibition
Authors Abstract
Content
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.
Meta TagsDetails
DOI
https://doi.org/10.4271/2007-01-1438
Pages
10
Citation
Reichstein, S., Weiss, R., Kenningley, S., Lades, K. et al., "High-Performance Cast Aluminum Pistons for Highly Efficient Diesel Engines," SAE Technical Paper 2007-01-1438, 2007, https://doi.org/10.4271/2007-01-1438.
Additional Details
Publisher
Published
Apr 16, 2007
Product Code
2007-01-1438
Content Type
Technical Paper
Language
English