Multi-Stage Torsion Damper Layout for Compact NVH Control

The single-stage damping structure is divided into multiple stages along the axial direction. The patent employs multiple drive plates and damper members arranged in series, where each stage handles a portion of the vibration damping task. This segmentation allows the system to achieve the required NVH performance with a smaller center diameter at each stage, thereby reducing the overall transmission length while maintaining effective vibration attenuation.

The patent transitions from a radial expansion approach (increasing center diameter) to an axial extension approach (multiple stages along axial direction). By distributing the damping function across multiple stages in the axial dimension, the system achieves the required stiffness characteristics without increasing the radial footprint, thus solving the contradiction between NVH performance and transmission length.

The damping function is segmented into multiple stages with individual damper members. Each damper member operates with smaller dimensions, and their combined effect along the axial direction achieves the target stiffness characteristic. This segmentation reduces the volume of individual components and the overall torsion damper while maintaining the required low stiffness property.

The patent shifts the design approach from increasing radial dimensions (center diameter) to extending axial dimensions (multiple stages). This dimensional transformation allows the system to achieve the desired stiffness characteristics through the cumulative effect of multiple compact stages, thereby reducing the overall volume while maintaining low stiffness.