1987-01-20

The Stiller-Smith Engine-The Dewelopment of a New Environment for High-Tech Materials 870721

New high-tech materials which are anticipated to revolutionize the internal combustion engine are being created everyday. However, their actual utilization in existing engines has encountered numerous stumbling blocks. High piston sidewall forces and thermal stresses are some of the problems of primary concern.
The Stiller-Smith Engine should provide an environment more conducive to the use of some of these materials. Absent from the Stiller-Smith Engine is a crankshaft, and thus a very different motion is observed. Since all parts in the Stiller-Smith Engine move in either linear or rotary fashion it is simple to balance. Additionally the use of linear connecting rod bearings changes the location of the sidewall forces thus providing an isolated combustion chamber more tolerant to brittle materials and potential adiabatic designs.
Presented herein is the development of this new engine environment, from conceptualization to an outline of present and future research. Included are the basic kinematics, dynamics, and a description of the engine as it exists in two prototypes.

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