US 11,807,049 B2
Pneumatic vehicle tire having an acoustic element
Makram Zebian, Hannover (DE); Oliver Schuermann, Langenhagen (DE); and Gueltekin Oezdogan, Hannover (DE)
Assigned to Continental Reifen Deutschland GmbH, Hannover (DE)
Appl. No. 16/471,592
Filed by Continental Reifen Deutschland GmbH, Hannover (DE)
PCT Filed Oct. 19, 2017, PCT No. PCT/EP2017/076668
§ 371(c)(1), (2) Date Jun. 20, 2019,
PCT Pub. No. WO2018/114086, PCT Pub. Date Jun. 28, 2018.
Claims priority of application No. 10 2016 225 552.5 (DE), filed on Dec. 20, 2016.
Prior Publication US 2020/0094630 A1, Mar. 26, 2020
Int. Cl. B60C 19/00 (2006.01)
CPC B60C 19/002 (2013.01) [B60B 2900/133 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A pneumatic vehicle tire comprising:
at least one acoustic element enclosed within a space inside the vehicle tire and the wheel rim and positioned radially inward of a profiled tread of the vehicle tire;
the at least one acoustic element comprises a body and a layer, and the at least one acoustic element is arranged on an inner tire surface involved in delimiting the space inside the tire, the body is arranged on the inner tire surface, and the layer is arranged on an inner surface region of the body that is facing the space inside the tire;
the layer of the at least one acoustic element is arranged on at least 15% of the surface of the body, the layer has a first surface region arranged at a distance from the inner tire surface and facing the space inside the tire, and the first surface region has an air connection to a second surface region of the layer which is lying opposite the first surface region;
the layer of the at least one acoustic element has a sound reflectance of at least 80% for a sound wave striking the first surface region which is measured at a reference frequency (f) of:
f=c/((R+r)·π)
where R is the nominal tire diameter, r is the nominal rim diameter, and c=343 m/s;
the first surface region having normal vectors having a radially inward component and the second surface region having normal vectors having a radially outward component to redistribute sound pressure to lower frequencies;
the body of the at least one acoustic element comprises a porous foam material for dampening noise.