VSAO _ Clutch diagnostic folder_VF_EN[108]

DEFINITION

ENGINE ACYCLISM: DEFINITION

Internal combustion engines can be characterized by the alternating compression and combustion phases. The cyclic pressure variations inside the cylinder result in variations in the speed of rotation. These variations are called acyclism. Acyclism causes an uneven speed of rotation of the crankshaft. This is also called torsional vibration.

GOOD TO KNOW

Perceived noise can be caused by poor filtration of vibrations and acyclism. It is the result of the rotation of the crankshaft + engine flywheel + clutch assembly, which is subject to cyclical irregularities.