초록 ▼

A mass damper method includes providing an electroactive polymer (7) and using the electroactive polymer (7) to manufacture a mass damper (6). The mass damper (6) for damping a vibrating system of a motor vehicle includes at least one of a damping body (10) forming a countervibrating mass with a dam

A mass damper method includes providing an electroactive polymer (7) and using the electroactive polymer (7) to manufacture a mass damper (6). The mass damper (6) for damping a vibrating system of a motor vehicle includes at least one of a damping body (10) forming a countervibrating mass with a damping spring (11) and a springy damping body (10) forming the countervibrating mass. The damping body (10) is indirectly or directly coupled with the vibrating system. The springy damping body (10) or the damping spring (11) includes an electroactive polymer (7). A motor vehicle exhaust system of an internal combustion engine is provided including an exhaust gas line (3) with an exhaust pipe (4), an exhaust gas-treating device (5) integrated in the exhaust pipe and the mass damper (6) coupled with the exhaust gas line.

대표청구항 ▼

1. A mass damper for damping a vibrating system of a motor vehicle, the mass damper comprising: at least one of a damping body forming a countervibrating mass with a damping spring and a springy damping body forming the countervibrating mass, said damping body being indirectly or directly coupled wi

1. A mass damper for damping a vibrating system of a motor vehicle, the mass damper comprising: at least one of a damping body forming a countervibrating mass with a damping spring and a springy damping body forming the countervibrating mass, said damping body being indirectly or directly coupled with the vibrating system, said springy damping body or said damping spring comprising an electroactive polymer, wherein the vibrating system of the motor vehicle is an exhaust system of an internal combustion engine, the exhaust system comprising an exhaust gas line with an exhaust pipe and an exhaust gas-treating means integrated in said exhaust pipe;an electric control means electrically connected to said electroactive polymer for actuating said electroactive polymer to set a resonant frequency of the mass damper and/or to generate natural vibrations of the mass damper as a function of an input variable received by said electric control means such that vibration of said exhaust system is reduced via said resonant frequency of said mass damper and/or said natural vibrations of said mass damper. 2. A mass damper in accordance with claim 1, wherein said control means is at least one of: electrically connected to at least one vibration sensor coupled with the vibrating system and detects the vibrations thereof, wherein said control means uses the detected vibrations as said input variable to actuate the mass damper; andelectrically connected to an engine control device for actuating an internal combustion engine and obtains from the engine control device a current rpm of the internal combustion engine, wherein said control means uses the rpm obtained as an input variable to actuate the mass damper. 3. A mass damper in accordance with claim 1, further comprising a common carrier wherein at least two damping bodies are provided, which are arranged at said common carrier so as to vibrate, said common carrier being rigidly connectable to the vibrating system, wherein at least one of said damping bodies or a corresponding said damping spring is formed at least partly from said electroactive polymer. 4. A mass damper in accordance with claim 3, wherein both of said at least two damping bodies or damping springs thereof comprise said electroactive polymer, wherein said electroactive polymer of both of said at least two damping bodies or damping springs thereof is actuated via said control means as a common control means. 5. A mass damper in accordance with claim 1, wherein the mass damper is a part of a passive mass damper having a resonant frequency set depending on an electric voltage applied to said electroactive polymer. 6. A mass damper in accordance with claim 1, wherein the mass damper is a part of an active mass damper excited to perform natural vibrations depending on at least of electric voltage pulses, electric vlotages and electric voltage applied to said electroactive polymer. 7. A motor vehicle exhaust system of an internal combustion engine, the exhaust system comprising: an exhaust gas line with an exhaust pipe;an exhaust gas-treating means integrated in said exhaust pipe;a mass damper coupled with the exhaust gas line, the mass damper comprising: at least one of a damping body forming a countervibrating mass with a damping spring and a springy damping body forming the countervibrating mass, said damping body being indirectly or directly coupled with at least the exhaust gas line, said springy damping body or said damping spring comprising an electroactive polymer;an electric control means electrically connected to said electroactive polymer for actuating said electroactive polymer to set a resonant frequency of the mass damper and/or to generate natural vibrations of the mass damper as a function of an input variable received by said electric control means, wherein vibration in at least said exhaust gas line is dampened via said resonant frequency and/or said natural vibrations. 8. A motor vehicle exhaust system in accordance with claim 7, wherein said control means is at least one of: electrically connected to at least one vibration sensor coupled with at least said exhaust gas line and detects the vibrations thereof, wherein said control means uses the detected vibrations as said input variable to actuate the mass damper; andelectrically connected to an engine control device for actuating an internal combustion engine and obtains from the engine control device a current rpm of the internal combustion engine, wherein said control means uses the rpm obtained as an input variable to actuate the mass damper. 9. A motor vehicle exhaust system in accordance with claim 7, further comprising a common carrier wherein at least two damping bodies are provided, which are arranged at said common carrier so as to vibrate, said common carrier being rigidly connectable to the vibrating system, wherein at least one of said damping bodies or a corresponding said damping spring is formed at least partly from said electroactive polymer. 10. A motor vehicle exhaust system in accordance with claim 9, wherein both of said at least two damping bodies or damping springs thereof comprise said electroactive polymer, wherein said electroactive polymer of both of said at least two damping bodies or damping springs thereof is actuated via said control means as a common control means. 11. A motor vehicle exhaust system in accordance with claim 7, wherein the mass damper is a part of a passive mass damper having a resonant frequency set depending on an electric voltage applied to said electroactive polymer. 12. A motor vehicle exhaust system accordance with claim 7, wherein the mass damper is a part of an active mass damper excited to perform natural vibrations depending on at least of electric voltage pulses, electric voltages and electric voltage applied to said electroactive polymer. 13. A motor vehicle exhaust system accordance with claim 7, wherein said damping body is connected to said exhaust gas line at a single coupling site of said exhaust gas line. 14. A motor vehicle exhaust system accordance with claim 7, wherein one of said damping spring and said springy damping body is in direct contact with said exhaust gas line. 15. A motor vehicle exhaust system accordance with claim 9, wherein said control means control each of said damping bodies such that each of said damping bodies vibrate in different directions, one of said different directions being perpendicular to another one of said different directions. 16. A mass damper in accordance with claim 1, wherein said damping body is connected to said vibrating system at a single coupling site of said vibrating system. 17. A mass damper in accordance with claim 3, wherein said control means control each of said damping bodies such that each of said damping bodies vibrate in different directions, one of said different directions being perpendicular to another one of said different directions. 18. A motor vehicle exhaust system of an internal combustion engine, the exhaust system comprising: a vibrating system comprising an exhaust gas line with an exhaust pipe and an exhaust gas-treating means integrated in said exhaust pipe;a mass damper coupled with at least the exhaust gas line, the mass damper comprising: at least one of a damping body forming a countervibrating mass with a damping spring and a springy damping body forming the countervibrating mass, said damping body being indirectly or directly coupled with at least said exhaust gas line, said springy damping body or said damping spring comprising an electroactive polymer;a vibration sensor connected to at least said exhaust gas line, said vibration sensor detecting at least exhaust gas line vibration of said at least said exhaust gas line;an electric control device electrically connected to said electroactive polymer, said electric control device being connected to said vibration sensor, said electric control device receiving at least said exhaust gas line vibration as input and actuating said electroactive polymer to set a resonant frequency of the mass damper and/or to generate natural vibrations of the mass damper based on at least said exhaust system vibration, wherein said exhaust system vibration is dampened via said resonant frequency and/or said natural vibrations. 19. A motor vehicle exhaust system accordance with claim 18, wherein said damping body is connected to said at least said exhaust gas line at a single coupling site of said at least said exhaust gas line. 20. A motor vehicle in accordance with claim 18, wherein said control means is electrically connected to an engine control device for actuating an internal combustion engine and obtains from the engine control device a current rpm of the internal combustion engine, wherein said control means uses the rpm obtained as an input variable to actuate the mass damper.