July 21, 2024
News

Honda’s Hidden Resonators: The Key to Minimizing Tire Noise

Electric vehicles have highlighted the issue of excessive noise from car tires within the cabin. Honda has devised a clever solution to this problem by incorporating hidden resonators that effectively cancel out the noise generated by the tires, akin to noise-cancelling technology typically found in headphones. Tires, like balls, are composed of rubber and air, and when they come into contact with the road surface, they produce noise at specific frequencies. Honda’s engineers have managed to calculate this frequency and develop passive resonators positioned on the wheel rim inside the tire to counteract the unwanted noise created by the movement of air within the tire.

Tires essentially act as hollow rubber cavities filled with air, rolling along the road surface and generating noise internally, known as pipe resonance. This noise is transmitted through the suspension system into the car’s cabin, resulting in the audible tire noise experienced by passengers. Honda has leveraged the concept of Helmholtz resonance, where sound is produced when blowing across the opening of an empty bottle, to create resonators that encircle the wheel and emit frequencies to counterbalance the tire resonance caused by air movements within the tire.

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Honda claims that noise-reducing wheels significantly decrease tire noise within the vehicle cabin. The resonators are constructed from a lightweight resin and are attached to the wheel partly through centrifugal force. They can withstand high-speed driving forces up to 1,500 times the force of gravity, and their design reduces unsprung weight, enhancing the overall driving experience. Honda introduced the first practical noise-reducing resonator in 2010 and has since developed a second-generation resonator that is half the weight of its predecessor.

While innovations like Honda’s noise-reducing wheels are not common, other manufacturers have adopted approaches such as incorporating foam rubber slices inside tires to absorb frequencies. Honda’s solution effectively mitigates more noise and could potentially be combined with foam-filled tires to further minimize interior noise.

FAQs

Q: How do Honda’s noise-reducing wheels work?
A: Honda’s noise-reducing wheels feature hidden resonators on the wheel rims inside the tires that emit frequencies to counteract the tire resonance caused by air movements within the tire.

Q: Are noise-reducing wheels a common feature in vehicles?
A: No, Honda’s noise-reducing wheels are a unique innovation that sets them apart from other manufacturers.

Conclusion

Honda’s implementation of noise-reducing wheels with hidden resonators showcases their commitment to enhancing the driving experience by minimizing unwanted tire noise within the cabin. This innovative solution not only reduces noise effectively but also demonstrates Honda’s engineering prowess in tackling common automotive challenges.

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