1. Definition of acyclism
The acyclism of an internal combustion engine is characterised by time variations in movement, speed or angular acceleration of its crankshaft, due to the forces being applied to piston-connecting rod-crank systems.
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Three characteristics
Depending on the circumstances, acyclism is quantified according to one of these three characteristics.
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Variations in angular positions
Which may make it possible to estimate the deformations and constraints imposed on a part stressed by the acyclisms of the crankshaft.
In addition, it may be necessary to consider angular displacements with regard to filtering systems if these systems have limited displacement or if exceeding a threshold value generates noise (as in the case of a clutch plate
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Operation of a single-cylinder
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