Clutch Disk Torsional Damper Layout for High-Torque Packaging
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Solution Overview
Problem
Existing torsional vibration dampers in automotive drive trains face limitations in design flexibility and space constraints due to their configuration with two spring elements and intermediate elements, which restricts performance parameters and torque transmission, especially at high torques.
Innovation Solution
A torsional vibration damper design featuring multiple spring elements and intermediate elements arranged in a non-rectangular configuration, such as triangular or circular patterns, allowing for radial displacement through cam mechanisms, which increases design freedom and space for other components, and enables efficient torque transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If two spring elements and two intermediate elements are used in a rectangular arrangement, then the construction is simple, but the design freedom and space for other components are limited
Solution Approach 1:
The invention divides the spring device into multiple independent spring elements (at least three) and intermediate elements (at least three), arranged in a segmented pattern around the axis of rotation. This segmentation allows each element to be independently positioned and sized, providing design freedom while maintaining construction simplicity through modular repetition of the same component type.
Solution Approach 2:
The invention transitions from a two-dimensional rectangular arrangement to a three-dimensional radial arrangement around the axis of rotation. The spring elements and intermediate elements are distributed circumferentially at different radial positions, creating a multi-dimensional configuration that maximizes space utilization and provides design freedom without increasing construction complexity.
2Use of energy by moving object
If spring elements are made as long as possible to maximize potential energy, then energy storage is improved, but space for intermediate elements is reduced
Solution Approach 1:
The invention utilizes the circumferential dimension by arranging multiple spring elements around the axis of rotation at different angular positions. This allows the spring elements to be positioned radially outward where they can achieve sufficient length for energy storage, while the intermediate elements are positioned radially inward, effectively using different radial zones to resolve the space conflict.
Solution Approach 2:
The invention applies different functional qualities to different regions: spring elements are positioned in the outer radial region where length and potential energy are maximized, while intermediate elements are positioned in the inner radial region where space availability is greater. This local differentiation allows both requirements to be satisfied simultaneously.
3Volume of moving object
If a rectangular arrangement with two intermediate elements is used, then the structure is compact, but radially inner installation space is restricted
Solution Approach 1:
The invention segments the intermediate elements and distributes them circumferentially around the axis of rotation rather than concentrating them in a rectangular pattern. This segmentation creates gaps between intermediate elements in the radial direction, opening up installation space in the radially inner region for friction devices and other components while maintaining overall structural compactness through the circular arrangement.
4Device complexity
If only two circumferential areas are used for connecting input part to lining carriers, then the structure is simple, but torque transmission is limited at high torques
Solution Approach 1:
The invention divides the torque transmission path into multiple segments by providing at least three connection areas distributed circumferentially around the axis of rotation. Each connection area can independently transmit torque, and the distributed arrangement allows torque to be shared across multiple paths, increasing total torque transmission capability while maintaining structural simplicity through repetitive modular connections.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design enhances the durability and performance of the torsional vibration damper by allowing for a wider range of performance parameters, increased space utilization, and improved torque transmission, while being independent of manufacturing tolerances.
Implementation Method 1
a spring device having a plurality of spring elements... which are elastically deformable and thereby builds up a restoring force
Implementation Method 2
Torque-transmitting intermediate elements, which are arranged between the input part and the output part, are arranged for forcible radial displacement by means of cam mechanisms
Implementation Method 3
The intermediate element, input part, and output part each have ramps on which rolling elements can roll
Data Source
AI summary
A torsional vibration damper for a clutch disk within a drive train of a motor vehicle includes an input part arranged around an axis of rotation (d), a spring device with at least three spring elements, an output part, and torque-transmitting intermediate elements. The output part can be rotated relative to the input part about the axis of rotation (d) to a limited extent against the spring device. The torque-transmitting intermediate elements are arranged between the input part and the output part for forcible radial displacement by means of cam mechanisms when the input part rotates relative to the output part. The spring device is arranged between the torque-transmitting intermediate elements, and a number of intermediate elements corresponds to a number of spring elements.