Exhaust gas treatment device

1. An exhaust gas treatment device for an exhaust system of an internal combustion engine, in particular in a motor vehicle, the exhaust gas treatment device comprising:

at least one exhaust gas treatment element extending axially between an upstream inflow end and a downstream outflow end that is supported radially on a housing by a bearing material and is supported axially on the housing at the downstream outflow end by a supporting device;

wherein the supporting device has a carrier, which is connected to the housing by at least one connection site and has at least one receptacle for holding a supporting material in axial contact with the exhaust gas treatment element;

wherein the carrier has a cross-sectional contour, which widens in the axial direction from the respective receptacle to the respective connection site; and

wherein the carrier is attached to the housing by several connection sites spaced a distance apart from one another in the circumferential direction; and

wherein the carrier is spaced a distance apart from the housing between neighboring connection sites forming an axial through-opening radially between the carrier and the housing between neighboring connection sites.

2. The exhaust gas treatment device according to claim 1 , wherein the receptacle has a ring-shaped groove that is open axially toward the exhaust gas treatment element and has a U-shaped profile.

3. The exhaust gas treatment device according to claim 1 , wherein the carrier includes a substantially arch shaped portion extending between neighboring connection sites, the axial through-opening being formed radially between the substantially arch shaped portion extending between neighboring connection sites and the housing.

4. The exhaust gas treatment device according to claim 3 , wherein the carrier is substantially ring shaped, the arch shaped portion extends angularly along a portion of a circumference of the ring shaped carrier between the neighboring connection sites.

5. The exhaust gas treatment device of claim 3 , wherein the arch shaped portions decrease in circumferential width as the carrier extends radially outward from and axially away from the receptacle toward the respective connection site.

6. The exhaust gas treatment device according to claim 1 , wherein the axial through-opening between the housing and the carrier permits fluid communication between an upstream side of the carrier with a downstream side of the carrier through the axial through-opening.

7. The exhaust gas treatment device of claim 1 , wherein the carrier includes a conical section extending between the receptacle and the connection sites, the through-openings extending through the conical section.

8. An exhaust gas treatment device for an exhaust system of an internal combustion engine, in particular in a motor vehicle, the exhaust gas treatment device comprising:

at least one exhaust gas treatment element that is supported radially on a housing by a bearing material and is supported axially on the housing by a supporting device;

wherein the supporting device has a carrier, which is connected to the housing by at least one connection site and has at least one receptacle for holding a supporting material in axial contact with the exhaust gas treatment element;

wherein the carrier has a cross-sectional contour, which widens in the axial direction from the respective receptacle to the respective connection site; and

wherein the exhaust gas treatment element extends axially between upstream and downstream ends, the at least one connection site is arranged axially inside the exhaust gas treatment element and axially between the upstream and downstream ends.

9. The exhaust gas treatment device of claim 7 , wherein the conical section is located radially outward from the receptacle.