Speed-Adaptive Vibration Absorber for Wet Torque Transmission
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Solution Overview
Problem
Existing torque transmission devices with speed-adaptive vibration absorbers experience reduced damping effectiveness due to vibration-angle-dependent damping effects, particularly in tight spatial relationships, leading to inefficient absorption of irregular rotations when operating with an operating medium.
Innovation Solution
The torque transmission device incorporates a speed-adaptive vibration absorber with absorber masses that compensate for both vibration-angle-independent and vibration-angle-dependent damping effects by adjusting the absorption magnitude to maintain optimal damping across varying vibration angles, using a configuration that includes a torsion damper and torque converter, and a housing filled with operating medium.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a speed-adaptive vibration absorber operates in an operating medium (wet state), then the housing can be fluid-tight and torque transmission is enabled, but the absorption magnitude decreases due to shearing and lifting actions of the operating medium
Solution Approach 1:
The patent applies preliminary anti-action by pre-compensating for the damping effects of the operating medium. The vibration absorber is specifically adapted for dry state operation with higher absorption magnitude, and the housing is designed with sufficient spatial relationships to minimize shearing and lifting actions. This preliminary design compensation counteracts the expected reduction in absorption magnitude when operating medium is introduced, maintaining effective vibration damping in both wet and dry states.
2Volume of moving object
If the spatial relationships on the absorber masses are made tight to reduce size, then the device compactness increases, but vibration-angle-dependent damping effects occur that reduce damping effectiveness
Solution Approach 1:
The patent applies parameter changes by carefully selecting and optimizing the spatial relationships (clearances) between the absorber masses and the housing. These clearances are designed as specific parameters that balance two competing requirements: being small enough to maintain compact device size, but large enough to prevent excessive vibration-angle-dependent damping effects. By adjusting these geometric parameters, the patent achieves both compactness and reliable damping effectiveness across various operating conditions.
3Reliability
If the absorber mass is designed for high absorption magnitude, then the damping of irregular rotations improves, but the vibration-angle-dependent damping effects become more significant in tight spatial conditions
Solution Approach 1:
The patent applies local quality by differentiating the design requirements for different operating states. The absorber mass is designed with specific local characteristics (mass distribution, geometry) that are optimized for dry state operation with high absorption magnitude. The housing is designed with corresponding local features (clearances, spatial relationships) that minimize shearing and lifting actions. This localized optimization ensures that the absorber mass provides high damping effectiveness when needed while reducing the impact of vibration-angle-dependent effects in tight spatial conditions.
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
The solution ensures consistent and optimal absorption of irregular rotations over a wide range of vibration angles, preventing resonance and maintaining damping effectiveness even in tight spatial conditions, thus enhancing the performance of the torque transmission device.
Implementation Method 1
The absorber mass carries out a speed-dependent oscillating movement in a circumferential direction and eradicates occurrences of irregular rotation of the drive
Implementation Method 2
In the operating state, the torque transmission device and accordingly also the housing and the vibration absorber carry out a rotational movement. As a result, the operating medium is thrown radially outward
Implementation Method 3
The speed-adaptive vibration absorber is secured to the housing by a torsion damper and/or a torque converter
Data Source
AI summary
A torque transmission device including a speed-adaptive vibration absorber having an absorber mass that is arranged inside a housing, which is at least partially filled with a working medium. The vibration absorber is designed to compensate for vibration angle-independent and vibration angle-dependent damping effects by the working medium in the operating state.