Snižování hluku a vibrací u převodovek osobního automobilu

Abstract

Dissertation thesis is focused on the problematic of the noise and vibration in the passenger vehicles. The introduction describes the current status of European legislation in this area of study. Below is methodology of noise measurement in passenger vehicles described in the details and also are described appropriate measurement and evaluation devices. In the next chapter are established all sources of noises and vibrations in the vehicles. After that the thesis is focused on gearboxes only. With respect to their design are defined sources of noise in the gearbox. Subsequently is focused on the most important sources both from the theoretical and the practical side. The methodologies and procedures leading to significant decreases in these noise and vibrational effects (for the most important sources of the noises in the gearbox) are following. At the end is practical sample of decrease of the noise emission solved on the workplace of the author is shown.