TL;DR: In this paper, a counter rotating mass system for balancing the vibrations produced by a vehicle engine was proposed, comprising a central support and counter rotating eccentric mass projecting from the two opposite sides of the support.
Abstract: The present invention relates to a counter rotating mass system for balancing the vibrations produced by a vehicle engine, comprising a central support (21) and counter rotating eccentric mass (22, 23, 24, 25) projecting from the two opposite sides of the support.