Device for particle separation in an exhaust-gas recirculation system and motor vehicle having the device
View Patent ↗A device for separating particles from an exhaust gas of an internal combustion engine includes at least a pot with a base having a multiplicity of openings, at least one nonwoven layer positioned on the base of the pot, and a cover. The at least one nonwoven layer is positioned between the base and the cover. A motor vehicle having the device is also provided.
1. An exhaust system, comprising:
an exhaust gas recirculation line configured to recirculate an exhaust gas of an internal combustion engine;
a device disposed in said recirculation line and configured to separate particles from the exhaust gas;
said device including a pot having a base with a multiplicity of openings formed therein, a cover, and at least one nonwoven layer disposed at said base and positioned between said base and said cover.
2. The exhaust system according to claim 1 , wherein said cover is wrapped around an outside of said pot.
3. The exhaust system according to claim 1 , wherein at least one of said base or said cover has a curved shape.
4. The exhaust system according to claim 1 , wherein said at least one nonwoven layer is catalytically coated.
5. The exhaust system according to claim 1 , wherein said at least one nonwoven layer is in the form of a fabric.
6. The exhaust system according to claim 1 , wherein said base has at least one central first zone and a second zone surrounding said at least one central first zone, and said first and second zones have differently configured openings.
7. A motor vehicle, comprising:
an exhaust-gas recirculation system equipped with a device for separating particles from an exhaust gas of an internal combustion engine;
said device including a pot having a base with a multiplicity of openings formed therein, a cover, and at least one nonwoven layer disposed at said base and positioned between said base and said cover.
8. The motor vehicle according to claim 7 , wherein said cover is wrapped around an outside of said pot.
9. The motor vehicle according to claim 7 , wherein at least one of said base or said cover has a curved shape.
10. The motor vehicle according to claim 7 , wherein said at least one nonwoven layer is catalytically coated.
11. The motor vehicle according to claim 7 , wherein said at least one nonwoven layer is in the form of a fabric.
12. The motor vehicle according to claim 7 , wherein said base has at least one central first zone and a second zone surrounding said at least one central first zone, and said first and second zones have differently configured openings.
13. The exhaust system according to claim 1 , wherein the exhaust system is configured to withstand temperatures up to approximately 800° C.
14. A method for operating an exhaust system, the method comprising the following steps:
providing an exhaust gas recirculation line;
providing a device in the recirculation line, the device including a pot having a base with a multiplicity of openings formed therein, a cover, and at least one nonwoven layer disposed at the base and positioned between the base and the cover;
recirculating an exhaust gas of an internal combustion engine through the exhaust gas recirculation line; and
separating particles from the exhaust gas in the device.
15. The method according to claim 14 , which further comprises catalytically coating the at least one nonwoven layer.
16. The method according to claim 15 , wherein the at least one nonwoven layer is in the form of a fabric.