Tire and wheel noise reducing device and system

B - Operations – Transporting – 60 – C

Patent

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Details

B60C 19/00 (2006.01) B60C 5/00 (2006.01)

Patent

CA 2656240

A system for dissipating sound shock waves within a vehicle tire includes a wheel upon which a tire is mounted to create an internal air chamber defined by the wheel and the tire. A flow-resistant barrier is coupled to the wheel or the tire and defines an air cavity within the internal air chamber. The barrier comprises a material that provides an acoustical resistance to sound shock waves passing therethrough. The air cavity defined by the barrier has a volume such that air within the cavity offers relatively small impedance to the passage of shock waves through the barrier and into the air cavity. The barrier also can produce frictional heat when displaced by a shock wave, thereby converting energy of the shock wave to heat to reduce noise associated therewith.

Système de dissipation des ondes de choc sonores dans un pneu d~un véhicule, comprenant une roue sur laquelle un pneu est monté pour créer une chambre à air interne définie par la roue et le pneu. Une barrière résistant à l~écoulement est couplée à la roue ou au pneu et définit une cavité d~air au sein de la chambre à air interne. La barrière comprend un matériau offrant une résistance acoustique aux ondes de choc sonores qui la traversent. La cavité d~air définie par la barrière a un volume tel que l~air qu~elle contient offre une impédance relativement faible au passage des ondes de choc au travers de la barrière et jusque dans la cavité d~air. La barrière peut également générer une chaleur de friction lorsqu~elle est déplacée par une onde de choc, convertissant ainsi l~énergie de l~onde de choc en chaleur pour réduire le bruit associé à celle-ci.

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