Disclosed is a pneumatic tire for reducing noise that can more effectively reduce cavity noise energy, which is generated by vibration of air filling the tire upon rotation of the tire resulting from car driving, and a frequency generated thereby. Provided is a pneumatic tire with reduced cavity noise including a porous sound-absorbing material adhered by an adhesive agent layer to an inside surface of an inner liner disposed in a tread layer in the tire, wherein the sound-absorbing material is continuously extended in a circumferential direction in the tire and is disposed such that an adhesion starting point finally contacts an adhesion end point, or is spaced from the adhesion end point so as to face each other, the sound-absorbing material has an open cell on a surface thereof, a volume of the sound-absorbing material is 14% to 26% with respect to a total volume of the tire, wherein the total volume of the tire is defined as a volume of an area extending from a bottom surface of a tread to under a rim, and a maximum width of the sound-absorbing material is 35% to 60% with respect to a width of the tire tread and a surface area of the sound-absorbing material is 10% to 50% with respect to a surface area of the rim of a wheel on the surface of the inner liner to which the sound-absorbing material is adhered. In accordance with the present invention, there is an advantage of more effectively reducing noise in tires by changing a noise energy causing resonance and a frequency generated by the energy.
PNEUMATIC TIRE WITH REDUCED TIRE NOISE
LUFTREIFEN MIT REDUZIERTEM REIFENGERÄUSCH
PNEUMATIQUE AVEC RÉDUCTION DU BRUIT
2018-09-26
Patent
Electronic Resource
English
IPC: | B60C VEHICLE TYRES , Fahrzeugreifen / C08G MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS , Makromolekulare Verbindungen, anders erhalten als durch Reaktionen, an denen nur ungesättigte Kohlenstoff-Kohlenstoff-Bindungen beteiligt sind |