Effects of a Non-Symmetric Stiller-Smith Mechanism on Balancing in a Small Internal Combustion Engine

Paper #:
  • 911294

Published:
  • 1991-11-01
Pages:
5
Abstract:
Balancing to date, of the Stiller-Smith Mechanism, has been for a symmetric configuration. If two pistons are moved closer to the center of the engine to minimize spatial requirements and also reduce weight, then the mass center of the inner mechanism no longer travels in a circle about the center of the engine. It is shown how the overall balancing of the engine is not compromised using the example of a small 8-cylinder engine. The effects of the non-symmetry on the performance of the linear bearing is presented and the resulting additional engineering concerns are discussed.
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