Torsional Damper Flange Layout for Modular Centrifugal Pendulums
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Solution Overview
Problem
Existing torsional vibration dampers for motor vehicle drive trains are not adequately compact in the radial direction and lack flexibility in integrating a centrifugal pendulum without altering their structural design, which affects their ability to effectively cancel out rotational irregularities across different excitation frequencies.
Innovation Solution
A torsional damper design featuring a rotatably mounted input part relative to an output part with an energy storage element, where the output flange includes flange sections and fastening receptacles allowing for the optional attachment of a centrifugal pendulum, enabling compactness and flexibility in design to accommodate both configurations with or without the pendulum.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the torsional damper is designed with a compact structure, then the radial space is reduced, but the integration of a centrifugal pendulum becomes difficult without structural modifications
Solution Approach 1:
The output flange is designed with multiple mounting receptacles that can accommodate different configurations - either a centrifugal pendulum or alternative components. This universal design allows the same compact structure to serve multiple functions and adapt to different application requirements without structural modifications
Solution Approach 2:
The mounting receptacles are pre-integrated into the output flange design, allowing the centrifugal pendulum to be attached without requiring any structural modifications to the torsional damper. The receptacles are prepared in advance to receive the pendulum's mounting elements
2Device complexity
If the torsional damper is designed without a centrifugal pendulum, then the structural design remains simple, but the ability to cancel rotational irregularities across different excitation frequencies is limited
Solution Approach 1:
The system allows dynamic configuration where the centrifugal pendulum can be attached or removed based on operational requirements. The mounting receptacles enable the pendulum to be integrated when enhanced damping performance is needed, while allowing a simpler configuration when the pendulum is not required
Solution Approach 2:
The centrifugal pendulum is designed as a separate, modular component that can be independently attached to the torsional damper through the mounting receptacles. This segmentation allows the pendulum to be added or removed without affecting the core torsional damper structure
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 effectively cancels out rotational irregularities and allows for tuning across different excitation frequencies, enhancing the overall quietness and efficiency of the drive train by providing a modular system that can be used with or without a centrifugal pendulum without requiring structural changes.
Implementation Method 1
the input part (40) is rotatable about the axis of rotation (15) relative to the output part (50) against the action of the energy storage element (45)
Implementation Method 2
a centrifugal pendulum (170), wherein the centrifugal pendulum (170) is arranged on the output part (50)
Data Source
Figure 1~3
Figure 4~6
Figure 7~8
AI summary
The invention relates to a torsional vibration damper (11) and a damping device (10) having a torsional vibration damper (11) of this kind, comprising at least one input part (40), an energy storage element (45) and output part (50), wherein: the output part (50) has a driver element (60) and an output flange (65) having at least one first flange portion (95) extending in the circumferential direction and a second flange portion (100) adjoining the first flange portion (95) in the circumferential direction and extending in the circumferential direction; the output flange (65) has a fastening end face (70) extending over the first flange portion (95) and the second flange portion (100); the driver part (60) has a first connection portion (140) extending in the radial direction and having a bearing surface (190) arranged on the end-face side; the first connection portion (140) bears on the fastening end face (70); the output flange (65) in the first flange portion (95) has at least one fastening receiver (120); the fastening end face (70) of the first flange portion (95) is designed to bear on a bearing surface (190) of a pendulum flange (175) of a centrifugal force pendulum (170) and the first fastening receiver (120) is designed to receive a first fastener (135) for fastening the pendulum flange (175) in a rotationally fixed manner.