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Optimizing the Piston/Bore Tribology: The Role of Surface Specifications, Ring Pack, and Lubricant
ISSN: 0148-7191, e-ISSN: 2688-3627
Published September 15, 2020 by SAE International in United States
This content contains downloadable datasetsAnnotation ability available
The present study looks into different possibilities for tribological optimization of the piston/bore system in heavy duty diesel engines. Both component rig tests and numerical simulations are used to understand the roles of surface specifications, ring pack, and lubricant in the piston/bore tribology. Run-in dynamics, friction, wear and combustion chamber sealing are considered. The performance of cylinder liners produced using a conventional plateau honing technology and a novel mechanochemical surface finishing process - ANS Triboconditioning® - is compared and the importance of in-design “pairing” of low-viscosity motor oils with the ring pack and the cylinder bore characteristics in order to achieve maximum improvement in fuel economy without sacrificing the endurance highlighted. A special emphasis is made on studying morphological changes in the cylinder bore surface during the honing, run-in and Triboconditioning® processes. It is demonstrated that the Triboconditioning® treatment, while in certain aspects resembling the run-in process, provides a greater effect depth and results in a beneficial tribological performance profile. In particular, the Triboconditioning® treatment of cylinder liners allows significant reduction in top ring wear when low viscosity motor oil is used for improved energy efficiency.
CitationZhmud, B., Tomanik, E., Grabon, W., Schorr, D. et al., "Optimizing the Piston/Bore Tribology: The Role of Surface Specifications, Ring Pack, and Lubricant," SAE Technical Paper 2020-01-2167, 2020, https://doi.org/10.4271/2020-01-2167.
Data Sets - Support Documents
|[Unnamed Dataset 1]|
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