EP 2541034 B1 20141105 - Motor vehicle ventilation channel with dampened Helmholtz resonator
Title (en)
Motor vehicle ventilation channel with dampened Helmholtz resonator
Title (de)
Kraftfahrzeug-Luftleitungskanal mit gedämpftem Helmholtz-Resonator
Title (fr)
Canal de guidage de l'air de véhicule automobile doté d'un résonateur Helmholtz amorti
Publication
Application
Priority
EP 11171742 A 20110628
Abstract (en)
[origin: EP2541034A1] The air duct (12) comprises a Helmholtz resonator (14) having a damping element (30) which functions as a sound-dissipative material. The Helmholtz resonator is arranged along the depth dimension (T) of the air duct and is set away from the transition region (28) with an abrupt change in the cross-sectional area. The damping element is provided in the transition region or on the side of the neck portion (14a) of the Helmholtz resonator with a smaller cross-sectional area.
IPC 8 full level
F02M 35/12 (2006.01)
CPC (source: EP)
F02M 35/1261 (2013.01); F02M 35/1272 (2013.01)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
DOCDB simple family (application)
EP 11171742 A 20110628