STUDY OF THE INFLUENCE OF GEOMETRIC PARAMETERS ON THE DISPLACEMENT OF PISTON AND COMPRESSION RATIO FOR A VARIABLE COMPRESSION RATIO MECHANISM
A variable compression ratio mechanism is presented and the constrained relations between different parameters are established. The study is performed in two ways: by geometrical and multibody approaches. Based on the formulae deduced in this study, the authors determine the extreme positions of the piston and the compression ratio for certain geometric parameters. The variations of extreme positions and compression ratio depending on the dimensions’ variations of the elements are presented in graphical mode and the conclusions are highlighted. A special attention is paid to the tiller’s curve of a specific point.
Key words: variable compression ratio mechanism, extreme positions, compression ratio, lever’s curve, multibody.
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