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US 6,932,189 B2Granted
Device for noise structuring in a motor vehicle
AssigneeDaimlerChrysler AG
InventorsRolf Helber, Marcus Hofmann, Roudolf Starobinski
Life of this patent
Estimating the term…
Abstract
A device for noise structuring in a motor vehicle has a plurality of gas-carrying lines connected to an internal combustion engine. At least two of the gas-carrying lines are acoustically linked together by at least one connection.
Claims23
A device for noise structuring in a motor vehicle, comprising:
- a plurality of gas-carrying lines connected to an internal combustion engine;
- and
- at least one connection, at least two of the gas-carrying lines acoustically linked together by the connection, the connection configured to vary at least one of an intake and exhaust noise of a motor vehicle engine by one of amplifying and eliminating sound frequencies varying as a function of a speed of the engine;
- wherein the at least two of the gas-carrying lines acoustically linked together by the connection include at least one intake line.
1 more element
A device for noise structuring in a motor vehicle, comprising:
- a plurality of gas-carrying lines connected to an internal combustion engine;
- and
- at least one connection, at least two of the gas-carrying lines acoustically linked together by the connection;
- wherein the connection includes a connecting line;
- and
- wherein at least one connecting line links at least two gas-carrying lines together so that travel time differences for sound waves propagated in the gas-carrying lines are produced between the two gas-carrying lines.
3 more elements
A device for noise structuring in a motor vehicle, comprising:
- a plurality of gas-carrying lines connected to an internal combustion engine;
- and
- at least one connection, at least two of the gas-carrying lines acoustically linked together by the connection;
- wherein the connection includes a connecting line;
- and
- wherein connecting points between at least one connecting line and at least two gas-carrying lines are arranged at different distances from associated connecting points at which the gas-carrying lines are connected to the internal combustion engine.
3 more elements
A device for noise structuring in a motor vehicle, comprising:
- a plurality of gas-carrying lines connected to an internal combustion engine;
- and
- at least one connection, at least two of the gas-carrying lines acoustically linked together by the connection, the connection configured to vary at least one of an intake and exhaust noise of a motor vehicle engine by one of amplifying and eliminating sound frequencies varying as a function of a speed of the engine;
- wherein the connection includes a connecting line;
- and
- wherein the connecting line has a considerably smaller cross-section than the gas-carrying line.
3 more elements
A device for noise structuring in a motor vehicle, comprising:
- a plurality of gas-carrying lines connected to an internal combustion engine;
- at least one connection, at least two of the gas-carrying lines acoustically linked together by the connection, the connection configured to vary at least one of an intake and exhaust noise of a motor vehicle engine by one of amplifying and eliminating sound frequencies varying as a function of a speed of the engine, the connection including a connecting line;
- at least one hollow body arranged in the connecting line;
- and
- an oscillatable element arranged inside the hollow body.
2 more elements
A device for noise structuring in a motor vehicle, comprising:
- a plurality of gas-carrying lines connected to an internal combustion engine;
- and
- at least one connection, at least two of the gas-carrying lines acoustically linked together by the connection, the connection including a connecting line;
- and
- at least one hollow body arranged in the connecting line;
- wherein the hollow body includes an essentially acoustically inert wall that divides the hollow body into two chambers, an oscillatable element extending into both of the two chambers.
3 more elements
A device for noise structuring in a motor vehicle, comprising:
- a plurality of gas-carrying lines connected to an internal combustion engine;
- at least one connection, at least two of the gas-carrying lines acoustically linked together by the connection, the connection including a connecting line;
- and
- an arrangement configured to selectively vary a cross-section of the connecting line arranged inside at least one connecting line.
1 more element
A device for noise structuring in a motor vehicle, comprising:
- a plurality of gas-carrying lines connected to an internal combustion engine;
- and
- at least one connection, at least two of the gas-carrying lines acoustically linked together by the connection, the connection including a connecting line;
- at least one hollow body arranged in the connecting line;
- and
- an oscillatable element arranged inside the hollow body;
- wherein the oscillatable element includes at least two plates arranged on a connecting element.
4 more elements
A device for noise structuring in a motor vehicle, comprising:
- a plurality of gas-carrying lines connected to an internal combustion engine;
- and
- at least one connection, at least two of the gas-carrying lines acoustically linked together by the connection, the connection including a connecting line;
- at least one hollow body arranged in the connecting line;
- wherein at least two lines, which open into a passenger compartment of the motor vehicle, at different points, proceed from the hollow body.
2 more elements
A device for noise structuring in a motor vehicle, comprising:
- a plurality of gas-carrying lines connected to an internal combustion engine;
- and
- at least one connection, at least two of the gas-carrying lines acoustically linked together by the connection, the connection configured to vary at least one of an intake and exhaust noise of a motor vehicle engine by one of amplifying and eliminating sound frequencies varying as a function of a speed of the engine;
- wherein the gas-carrying lines include at least a first line and a second line, the first line connected on one end at a first connection point on the internal combustion engine, the second line connected on one end at a second connection point on the internal combustion engine;
- and
- wherein the gas-carrying lines include a plurality of intake lines and a plurality of exhaust lines, at least one intake line connected to at least one exhaust line via the connection.
3 more elements
Dependencies are inferred from the claim text.