Vibration load of transmission units at vehicle’s motion over different roads

Vibrations of operating transmission units caused partly by the vehicle's motion over the road and partly by running engine are considered in this article. Special attention is paid to the oscillations caused by the vehicle wheels interaction with the road surface. Spectral density of the road microprofile is known to be one of its primary characteristics. Its value affects the road action force on the transmission. A range of questions of the road surface force impact causing vibration load determined by engine torsional oscillations is considered in this article.