DEVICE FOR EXHAUST-GAS AFTERTREATMENT HAVING A DOSING UNIT FOR AN EXHAUST-GAS AFTERTREATMENT AGENT AND MOTOR VEHICLE HAVING THE DEVICE

摘要

A device for the aftertreatment of an exhaust gas of an internal combustion engine flowing through an exhaust line includes at least one dosing unit disposed in an opening of an exhaust pipe of the exhaust line and configured to add an exhaust-gas aftertreatment agent into the exhaust line. The dosing unit is enclosed by a cooling jacket, through which the dosing unit is fastened in the opening of the exhaust pipe. The cooling jacket is at least partially enclosed by a space or chamber delimited at least by the cooling jacket, the exhaust pipe, and a cover plate. The cover plate is connected to the exhaust pipe and spaced apart from the cooling jacket or the dosing unit by a gap. A motor vehicle having the device is also provided.

主权项

1. A device for the aftertreatment of an exhaust gas from an internal combustion engine, the device comprising:
an exhaust line through which the exhaust gas flows from the internal combustion engine, said exhaust line having an exhaust pipe with an opening formed therein; a dosing unit disposed in said opening and configured to meter an exhaust-gas aftertreatment agent into said exhaust line; a cooling jacket surrounding said dosing unit and fixing said dosing unit in said opening; a covering plate connected to said exhaust pipe and spaced apart from said cooling jacket or from said dosing unit by a gap; and at least said cooling jacket, said exhaust pipe and said covering plate delimiting a space at least partially surrounding said cooling jacket.