Low-noise pneumatic tire tread pattern

Abstract

The invention provides a low-noise pneumatic tire tread pattern which comprises a longitudinal groove extending in the circumferential direction of a tire crown and a plurality of resonators connected to one side of the longitudinal groove in parallel at intervals, and each resonator comprises two adjacent narrow grooves. Each narrow groove extends along the surface, far away from the longitudinal groove, of the tire crown to form multiple sections of transverse channels and vertical channels which are connected end to end, the included angle of the transverse channels extending for the first time and deviating from the longitudinal groove direction is A, the vertical channels are distributed in parallel with the longitudinal groove, and the adjacent transverse channels are arranged in parallel; wherein the number of end-to-end connection points of the transverse channel and the vertical channel is at least one. According to the pneumatic tire tread pattern provided by the invention, on one hand, the peak value of a first-order lumen resonance main peak caused by the longitudinal grooves can be well reduced, and on the other hand, the peak values of two secondary split peaks caused by the longitudinal grooves beside the resonators can be effectively reduced. On the other hand, the tread patterns can disperse concentrated tube cavity resonance noise in a wide frequency band, and the purpose of tire noise reduction is well achieved.

Description

technical field [0001] The invention relates to the technical field of tread pattern of a pneumatic tire, in particular to a tread pattern of a pneumatic tire for reducing resonance noise of a tire tube cavity. Background technique [0002] As the engine noise and vehicle body vibration noise are well controlled, the proportion of tire noise in vehicle noise has further expanded. As one of the main sources of tire noise, tire cavity resonance noise needs to be well controlled from the perspective of protecting the physical and mental health of drivers. The resonance noise of the tire tube cavity is caused by the air column resonance generated by the pipe with openings at both ends formed by the longitudinal groove of the tire tread and the ground. This noise is generally generated in the range of 800-1200Hz, which is in the frequency band that the human ear is more sensitive to. Therefore, the control of tire tube resonance noise becomes very important. [0003] In order t...

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Problems solved by technology

[0004] 1. Although the resonator can reduce the resonance noise of the tire tube cavity, it does not consider the secondary split peak generated by the resonator due to the side-by-side longitudinal groove;

[0005] 2. The type of the resonator is a quarter-wavelength tube. To eliminate the cavity resonance noise around 1000 Hz, the required size is relatively large, resulting in a small number of resonators arranged in the ground tread of the tire, which cannot be well Achieving Broadband Noise Cancellation

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