Low-noise pneumatic tire assembly

Abstract

The invention discloses a low-noise pneumatic tire assembly. An annular tire cavity is formed by the inner surface of a tread of a tire and a rim jointly. The low-noise pneumatic tire assembly is characterized in that energy dissipaters in a partition mode are arranged on the cross section of the annular tire cavity, the annular tire cavity is circumferentially divided into multiple sections through the energy dissipaters, the energy dissipaters are made of a porous sound absorption material, front and rear porous faces of the sound absorption material are arranged in the annular tire cavity,and the tire cavity resonance acoustic mode separation energy dissipaters are formed. The low-noise pneumatic tire assembly has the remarkable noise reduction performance and is light, economical anddurable.

Description

technical field [0001] The present invention relates to pneumatic tires, and more particularly to a low noise pneumatic tire assembly. Background technique [0002] Noise is an important indicator of the driving comfort of a passenger car. When the car is running, the cavity resonance sound generated by the cavity formed between the pneumatic tire and the rim is one of the important sources of car noise. The peak frequency of the cavity resonance sound is related to the size of the tire cavity. Generally, there is an obvious and sharp resonance peak between 150 and 250 Hz, which brings unpleasant feelings to the passengers in the car. In order to reduce the resonance noise of the tire cavity, there is a technical solution for continuously laying a layer of sound-absorbing material on the inner surface of the tire tread, but the related technical solutions have the following problems: [0003] 1. The sound-absorbing material layer is laid to make use of the sound-absorbing e...

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Problems solved by technology

[0003] 1. The sound-absorbing material layer is laid to make use of the sound-absorbing effect of the sound-absorbing material, and does not significantly change the shape and size of the tire cavity. In order to obtain a better noise reduction effect, it is necessary to lay the sound-absorbing material along the entire circumference of the tire The layer does not need to reach a certain thickness and width, but the related form increases the weight of the tire, and the amount of sound-absorbing material is large and the cost is high;

[0004] 2. Since the sound mode shape of the tire cavity between 150 and 250 Hz is distributed along the tire circumference, the sound-absorbing material layer laid along the entire circumference of the tire is usually parallel to the sound mode shape, and there is only a single The pore surface faces the tire cavity, so the sound absorption performance of the sound-absorbing material cannot be fully exerted, which greatly reduces the sound-absorbing effect;

[0005] 3. Since it needs to be laid continuously along the entire circumference of the tire and reach a certain thickness and width requirements, it is difficult to avoid damage to the sound-absorbing material layer during the installation and removal of the tire

[0006] 4. Since the sound-absorbing material layer needs to be laid continuously along the entire circumference of the tire, covering most of the inner surface of the tire tread, it brings difficulties to the flow of the repair fluid along the inner surface of the tire tread, making the pneumatic tire Puncture repairs are difficult to perform quickly and reliably

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