Potential Applications of the Stiller-Smith Mechanism in internal Combustion Engine Designs
Published November 08, 1987 by SAE Australasia in Australia
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With few exceptions most internal combustion engines use a slider-crank mechanism to convert reciprocating piston motion into a usable rotational output. One such exception is the Stiller-Smith Mechanism which utilizes a kinematic inversion of a Scotch yoke called an elliptic trammel. The device uses rigid connecting rods and a floating/eccentric gear train for motion conversion and force transmission.
The mechanism exhibits advantages over the slider-crank for application in internal combustion engines in areas such as balancing, size, thermal efficiency, and low heat rejection. An overview of potential advantages of an engine utilizing the Stiller-Smith Mechanism is presented.
CitationSmith, J., Clark, N., Stiller, A., Churchill, R. et al., "Potential Applications of the Stiller-Smith Mechanism in internal Combustion Engine Designs," SAE Technical Paper 871225, 1987.
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