Three-Dimensional Balancing of the Stiller-Smith Mechanism for Application to an Eight-Cylinder IC Engine

Abstract

The Stiller-Smith Mechanism employs a double cross-slider to convert linear reciprocating motion into rotational motion. It has previously been shown that a four-cylinder configuration utilizing this motion conversion device can be balanced in two dimensions. The inherent planar nature of this mechanism makes it possible to produce a compact, eight-cylinder configuration for use as an internal combustion engine which is balanced in three dimensions. This paper develops and presents the necessary requirements for such a balanced engine. Relative merits of various configurations are discussed and analytical results of different balancing schemes are presented.

Parametric Modelling of Internal Combustion Engine Systems for Design Optimization

“…Connecting rod Piston Output shaft Counterweights (if needed)* * It has been shown that some configuratlons do not requlre counterweights (25) Bearing supports Housing Each of these subroutines also yields the weight of each of the components which are then added up to yield their contribution to the total engine weight.…”