Sonic coupling between an intake tract or engine compartment and the interior of a motor vehicle
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United States of America Patent
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Feb 10, 2009
Grant Date -
Jun 12, 2008
app pub date -
Feb 13, 2006
filing date -
Feb 16, 2005
priority date (Note) -
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Abstract
An apparatus for sonic coupling between an intake tract or engine compartment and a vehicle interior of a motor vehicle has a housing into which sound enters from the intake tract via a first line, and out of which sound exits into the vehicle interior via a second line. A transmission body is arranged in the housing, the transmission body having a gas-tight separating wall between a sound inlet into the housing and a sound outlet out of the housing. The position of the separating wall is held essentially constant by a positioning device. A transmission wall between the separating wall and the housing provides an acoutis transfer function that is adjustable. The separating wall runs generally perpendicular to the longitudinal axis of sound propagation and the transmission wall runs at an angle .alpha. to the longitudinal axis of sound propagation.
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