Apparatus for transmitting sound in a motor vehicle

a motor vehicle and sound technology, applied in the direction of combustion air/fuel air treatment, instruments, charge feed systems, etc., can solve the problems of high load on the membrane-like sealing frame, adverse effect of sound transmission performance, etc., and achieve good sealing

Inactive Publication Date: 2006-03-23
MANN HUMMEL GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0016] The web of the transmission valve is held in particular between the elastic axle journals, forming a continuous axle element together with the axle journals. The sealing strip may be in continuous contact with the web and the axle journals, thus providing a good seal even in the corner areas and / or in the area of the axle journals.

Problems solved by technology

Due to the manufacturing process, the gap must have a certain width, but this has an adverse effect on the sound transmission performance.
The membrane-like sealing frame is subjected to high loads due to the resulting pressure differences in operation, particularly with supercharged internal combustion engines.

Method used

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  • Apparatus for transmitting sound in a motor vehicle
  • Apparatus for transmitting sound in a motor vehicle
  • Apparatus for transmitting sound in a motor vehicle

Examples

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Embodiment Construction

[0029]FIG. 1 shows a sectional diagram depicting a prior art device for transmitting sound in a motor vehicle. The device includes a housing 1 having an inside partition 2. Housing 1 and partition 2 together define or delimit two separate subspaces 3 and 4. A part of the housing 1 is integrally molded on an intake manifold 17 of an internal combustion engine (not shown) of a motor vehicle, with the first subspace 3 being connected to the interior of the intake manifold 17 in a manner that transmits sound pressure. The partition 2 creates a fluid separation between the first subspace 3 and the second subspace 4.

[0030] A transmission valve 6 is provided which opens through the partition 2 and is mounted to pivot about a pivot axis 5 situated in the partition 2. The transmission valve 6 extends on both sides from the pivot axis 5 up to close to the inside wall of the housing 1, leaving only a narrow gap, and thereby divides the two subspaces 3, 4 into individual spaces 3′, 3″, 4′, 4″....

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PUM

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Abstract

An apparatus for transmitting sound in a motor vehicle including a housing (1) with an inside partition (2), which together define or delimit two separate subspaces (3, 4), which in turn are separated by a transmission valve (6) which opens through the partition (2) and can pivot about a pivot axis (5). The first subspace (3) is connected to an intake manifold of an internal combustion engine, and the second subspace (4) is connected to an interior of the motor vehicle. An elastic and at least partially perforated sealing element (8) is provided in a gap (25) between a peripheral edge (7) of the transmission valve (6) and the housing (1).

Description

BACKGROUND OF THE INVENTION [0001] The present invention relates to a device for sound transmission in a motor vehicle. [0002] The propulsion motors of modern vehicles are very smooth-running internal combustion engines which generate operating noise that is hardly audible in the interior of the vehicle. Under some circumstances, the operating noise of the internal combustion engine is audible through the secondary noise of the turning wheels, a ventilation system that is turned on, etc. Under certain circumstances, it may be desirable to audibly transmit the operating noise of the driving engine into the interior of the vehicle. [0003] Published European patent application no. EP 1,306,829 discloses a device for transmitting the noise of an internal combustion engine in which a housing having a partition defines or delimits two separate subspaces. The partition is interrupted by a pivotable valve which separates the two subspaces. The first subspace is connected to the intake manif...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): F01N1/02F01N1/08
CPCF02M35/10019F02M35/10301F02M35/1294F02M35/1222G10K11/22
Inventor ALEX, MATTHIASWEBER, DANIELKNAUSS, RUEDIGER
Owner MANN HUMMEL GMBH
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