The results obtained were subsequently processed in the MatLab computational
environment. Consequently, specific sets of the time courses recorded for the vibration
accelerations were established. Some exemplary measurement result obtained for the engine
with constant rotational velocity excitation applied has been depicted in Fig. 5. The
established scope of research enables to observe changes of the vibration for idle gear
rotational velocity increase. The idle gear rotational velocity founded during research were:
750 rpm, 1500 rpm, 2000 rpm, 3000 rpm.