The Collins Scotch Yoke Engine as a Compact Alternative - A Theoretical Comparison of Features of Scotch Yoke and Conventional Engines

Paper #:
  • 950091

Published:
  • 1995-02-01
Citation:
Rosenkranz, H. and Watson, H., "The Collins Scotch Yoke Engine as a Compact Alternative - A Theoretical Comparison of Features of Scotch Yoke and Conventional Engines," SAE Technical Paper 950091, 1995, https://doi.org/10.4271/950091.
Pages:
11
Abstract:
The application of a Scotch Yoke crank mechanism to a reciprocating internal combustion engine reduces the engine's size and weight and, with the sinusoidal piston motion it provides, it changes the combustion parameters and simplifies the requirements for perfect balancing of the engine. This paper makes a theoretical comparison between conventional and Scotch Yoke engines with dimensional similarity of individual components where possible such as bore and stroke, and justifiable differences appropriate to each engine design such as cylinder bore off-set, piston height, connecting rod length etc. Included are variations related to differences in piston motion (true sinusoidal versus conventional) such as exhaust emissions and balancing requirements.
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