IP Library › Granted Patent US 7,468,086
Granted Patent B2
US 7,468,086 · App. 11/089,637 · Granted Dec 23, 2008

Device for cleaning vehicular exhaust gas, in particular a diesel exhaust particle filter, and vehicle comprising such device

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Quick Facts
Patent No.
US 7,468,086
App. No.
11/089,637
Granted
Dec 23, 2008
Kind
B2
Abstract

In a device for cleaning vehicular exhaust gas, in particular a diesel exhaust particle filter, the individual bodies which together constitute a one-piece filter body, are arranged so as to have an oblique angle with an axis of symmetry of the filter body and/or with the horizontal plane, here in relation to the installation condition of the device in the vehicle and/or an underside of the filter body having a reduced curvature compared to portions of the outer contour adjoining the underside.

Claims (47)

1. A device for cleaning vehicular exhaust gas, in particular a diesel exhaust particle filter, comprising

a one-piece filter body which has gas flowing through it and is composed of a plurality of cuboid individual bodies and, as seen in cross-section, has a round outer contour deviating from a circular shape,

the individual bodies located in the interior of the filter body having a square cross-section delimited by side faces, and neighboring, machined individual bodies having plane side faces adjoining the side faces of the internal individual bodies,

wherein the side faces are arranged so as to have an oblique angle with one of

an axis of symmetry of the filter body,

a horizontal plane, seen in the installation condition of the device in a vehicle, and

an underside of the filter body having a reduced curvature compared to portions of the outer contour adjoining the underside,

wherein the axis of symmetry is arranged so as to be essentially vertical, relative to the installation condition, and

wherein the arrangement of the individual bodies is symmetrical to the axis of symmetry.

2. A device for cleaning vehicular exhaust gas, in particular a diesel exhaust particle filter, comprising

a one-piece filter body which has gas flowing through it and is composed of a plurality of cuboid individual bodies and, as seen in cross-section, has a round outer contour deviating from a circular shape,

the individual bodies located in the interior of the filter body having a square cross-section delimited by side faces, and neighboring, machined individual bodies having plane side faces adjoining the side faces of the internal individual bodies,

wherein the side faces are arranged so as to have an oblique angle with one of an axis of symmetry of the filter body,

a horizontal plane, seen in the installation condition of the device in a vehicle, and

an underside of the filter body having a reduced curvature compared to portions of the outer contour adjoining the underside, and

wherein the filter body has axes of symmetry which are perpendicular to each other.

3. The device according to claim 2 , wherein the arrangement of the individual bodies is symmetrical to the axes of symmetry.

4. A device for cleaning vehicular exhaust gas, in particular a diesel exhaust particle filter, comprising

a one-piece filter body which has gas flowing through it and is composed of a plurality of cuboid individual bodies and, as seen in cross-section, has a round outer contour deviating from a circular shape,

the individual bodies located in the interior of the filter body having a square cross-section delimited by side faces, and neighboring, machined individual bodies having plane side faces adjoining the side faces of the internal individual bodies,

wherein the side faces are arranged so as to have an oblique angle with one of an axis of symmetry of the filter body,

a horizontal plane, seen in the installation condition of the device in a vehicle, and

an underside of the filter body having a reduced curvature compared to portions of the outer contour adjoining the underside, and

wherein the oblique angle amounts to approximately 45°.

5. The device according to claim 4 , wherein the axis of symmetry is arranged so as to be essentially vertical, relative to the installation condition.

6. A device for cleaning vehicular exhaust gas, in particular a diesel exhaust particle filter, comprising

a one-piece filter body which has gas flowing through it and is composed of a plurality of cuboid individual bodies and, as seen in cross-section, has a round outer contour deviating from a circular shape,

the individual bodies located in the interior of the filter body having a square cross-section delimited by side faces, and neighboring, machined individual bodies having plane side faces adjoining the side faces of the internal individual bodies,

wherein the side faces are arranged so as to have an oblique angle with one of an axis of symmetry of the filter body,

a horizontal plane, seen in the installation condition of the device in a vehicle, and

an underside of the filter body having a reduced curvature compared to portions of the outer contour adjoining the underside, and

wherein the filter body has an oval outer contour as seen in cross-section.

7. The device according to claim 6 , wherein the filter body has an elliptic outer contour as seen in cross-section.

8. A device for cleaning vehicular exhaust gas, in particular a diesel exhaust particle filter, comprising

a one-piece filter body which has gas flowing through it and is composed of a plurality of cuboid individual bodies and, as seen in cross-section, has a round outer contour deviating from a circular shape,

the individual bodies located in the interior of the filter body having a square cross-section delimited by side faces, and neighboring, machined individual bodies having plane side faces adjoining the side faces of the internal individual bodies,

wherein the side faces are arranged so as to have an oblique angle with one of an axis of symmetry of the filter body,

a horizontal plane, seen in the installation condition of the device in a vehicle, and an underside of the filter body having a reduced curvature compared to portions of the outer contour adjoining the underside, and

wherein the filter body has a width which is larger than its height.

9. The device according to claim 8 , wherein the axis of symmetry is perpendicular to the horizontal plane.

10. The device according to claim 8 , wherein the filter body has a height which amounts to a maximum of 3.5 times the diagonal of the unmachined individual bodies.

11. The device according to claim 8 , wherein the filter body has a width and a height which each are in the range from 2 to 3.5 times the diagonal of the unmachined individual bodies.

12. The device according to claim 8 , wherein the filter body has a width which amounts to a maximum of 4.5 times the diagonal of the unmachined individual bodies.

13. The device according to claim 12 , wherein the filter body has a height which amounts to a maximum of 3.5 times the diagonal of the unmachined individual bodies.

14. The device according to any of the claims 13 , wherein the filter body has a width and a height which each are in the range from 2 to 3.5 times the diagonal of the unmachined individual bodies.

15. The device according to any of the claims 12 , wherein the filter body has a width and a height which each are in the range from 2 to 3.5 times the diagonal of the unmachined individual bodies.

16. The device according to claim 8 , wherein the device is included in the vehicle.