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A Spherical Joint Piston Design for High Speed Diesel Engines
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English
Abstract
A spherical joint piston and connecting rod have been developed through design proof-of-concept. The spherical joint allows piston rotation. The benefits of a rotating, symmetrical piston are: mechanical and thermal load symmetry, improved ring sealing and lubrication, and reduced bearing loads, scuffing, clearances and oil consumption.
The assembly includes a squeeze cast, fiber reinforced aluminum spherical joint piston. Reinforcement is located in the piston bowl and skirt. The connecting rod consists of a spherical small end positioned on an elliptical cross-sectioned shank blended into a conventional big end. The assembly has operated at cylinder pressures exceeding of 24 MPa.
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Citation
Wiczynski, P., Mielke, S., and Conrow, R., "A Spherical Joint Piston Design for High Speed Diesel Engines," SAE Technical Paper 960055, 1996, https://doi.org/10.4271/960055.Also In
References
- Reichenbach, D. H. Hoag, K. L. Frisch Cressman, S. R. Manon, A. R. “Development of Advanced In-Cylinder Components and Tribological Systems for Low Heat Rejection Diesel Engines - Phase 1 Final Report,” 1991
- Brown, D. T. Eckert, B. 0. “The Rotating Piston 50 Years On,” Sulzer Brothers Limited June 1988
- Purday, H. F. P. “Diesel Engine Designing,” D. Van Nostrand Company, Inc. 1962 325 327
- Wiiczynski, P. D. Varo, R. G. Archuleta, S. A. Galarno, M. J. “New Piston Telemetry Applied to Spherical Joint Piston Development,” SAE Paper 960056