The Hydro-Viscous Drive(HVD) is a new type of power transmission device,utilizing the shear of oil film between two sets of discs.

• 液体粘性传动技术是一种靠摩擦片之间的油膜剪切力来传递动力的新型传动方式,在大功率风机、水泵调速节能方面有着广泛的应用前景。