用于在发动机和变速箱之间传递动力和扭矩的组件组，以便能够驱动变速箱的变速。在内燃机工业车辆中，使用可切换的联接离合器，其中待联接的组件之间的力的传递是通过摩擦来实现的。由于叉车的方向频繁变化，因此大多使用静液压，静电或液动离合器。

         Assembly group for the transferral of power and torque between engine and transmission gear, in order to be able to actuate the gear shifting of the transmission gear. In combustion-engine industrial trucks switchable coupling clutches are used, where the transferral of forces between the assemblies to be coupled is effected by friction. Because of frequent directional changes in lift trucks mostly hydrostatic, electrostatic, or hydrodynamic clutches are used.