Selectively Tunable Vibration Absorber for Multi-Frequency Vehicle Noise
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Solution Overview
Problem
Vehicles face challenges in effectively mitigating multiple vibrational frequencies due to limited space for multiple tuned vibration absorbers, leading to undesirable noise and premature component fatigue.
Innovation Solution
A selectively tunable vibration absorber system with a support member and adjustable elastomeric elements, featuring multiple tuning features and masses, allowing for attenuation of vibrations across various frequency ranges in different directions, while maintaining a compact package size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple tuned vibration absorbers are incorporated to mitigate multiple frequencies, then vibration attenuation effectiveness is improved, but device complexity and packaging space requirements worsen
Solution Approach 1:
The patent applies universality by designing a single vibration absorber that can perform multiple functions - attenuating multiple different frequencies (first frequencies from prime mover and second frequencies from transmission/differential). The absorber is configured with multiple tuning features that enable it to address both prime mover vibrations and drivetrain vibrations, replacing what would traditionally require multiple separate TVA components
Solution Approach 2:
The patent merges multiple vibration attenuation functions into a single integrated absorber unit. By combining the capability to attenuate first frequencies and second frequencies within one device, the invention consolidates what would otherwise require multiple separate TVA systems, thereby reducing overall device complexity and packaging requirements
2Reliability
If multiple tuned vibration absorbers are incorporated to mitigate multiple frequencies, then vibration attenuation effectiveness is improved, but available packaging space worsens
Solution Approach 1:
The single vibration absorber is designed with universal capability to attenuate multiple frequency ranges (first frequencies from prime mover and second frequencies from transmission/differential). This multi-functional design eliminates the need for multiple separate absorbers, thereby reducing the total volume required for packaging while maintaining comprehensive vibration attenuation effectiveness
Solution Approach 2:
By merging multiple vibration attenuation functions into one integrated absorber, the invention significantly reduces the packaging space required. Instead of allocating space for multiple separate TVA units, the merged single absorber occupies less space while achieving the same or better overall vibration mitigation performance across multiple frequency bands
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 system effectively absorbs and attenuates vibrations across multiple frequency bands, reducing noise and fatigue in vehicle components, while accommodating the constraints of limited space.
Implementation Method 1
The selectively tunable element is selectively adjustable to attenuate vibrations in a selected frequency range perceived by the support member in a selected direction
Implementation Method 2
the selectively tunable member is formed from an elastomeric material
Data Source
AI summary
A selectively tunable vibration absorber includes a support member having an outer surface, and a selectively tunable element mounted relative to the outer surface of the support member. The selectively tunable element is selectively adjustable to attenuate vibrations in a selected frequency range perceived by the support member in a selected direction. A mass is supported by the selectively tunable element.