A Spherical Joint Piston Design for High Speed Diesel Engines

Paper #:
  • 960055

Published:
  • 1996-02-01
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.
Pages:
13
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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