초록

A mounting arrangement for attaching a pump arrangement to an exhaust pipe at a boss includes a delivery nozzle section and a remaining section including a pump body. The mounting arrangement includes a packing for supporting the pump body at the remaining section of the pump arrangement.

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1. A mounting arrangement for attaching a pump arrangement to an exhaust pipe at a boss, the pump arrangement comprising a delivery nozzle section and a remaining section including a pump body, wherein the mounting arrangement comprises packing radially surrounding the pump body for supporting the p

1. A mounting arrangement for attaching a pump arrangement to an exhaust pipe at a boss, the pump arrangement comprising a delivery nozzle section and a remaining section including a pump body, wherein the mounting arrangement comprises packing radially surrounding the pump body for supporting the pump body at the remaining section of the pump arrangement. 2. A mounting arrangement according to claim 1, wherein the remaining section of the pump arrangement comprises more than half the weight of the pump arrangement and/or the centre of mass of the pump arrangement. 3. A mounting arrangement according to claim 1, further comprising a retainer for retaining the nozzle section of the pump arrangement in the boss, in use, and wherein the mounting arrangement is cooperable with the retainer. 4. A mounting arrangement according to claim 3, wherein the retainer comprises a can that defines a volume for receiving the packing and wherein the packing comprises one or more inserts of packing material, the inserts being received within the volume. 5. A mounting arrangement according to claim 3, wherein the retainer is arranged to be rigidly cooperable with the boss and wherein the packing provides flexible support for the pump body with respect to the retainer. 6. A mounting arrangement according to claim 1, wherein the packing is arranged to damp vibration of the pump body. 7. A mounting arrangement according to claim 1, wherein the packing is arranged to thermally insulate the pump body. 8. A mounting arrangement according to claim 1, wherein the packing comprises at least one anisotropic portion or layer being stiffer in a radial direction than in an axial direction parallel to a central mounting axis of the pump arrangement. 9. A mounting arrangement according to claim 1, wherein the packing comprises a plurality of layers including at least one insulating layer, and at least one flexible sealing layer arranged to oppose the ingress of hot air towards the insulating layer. 10. A mounting arrangement according to claim 1, wherein the packing comprises a plurality of layers including at least one support layer arranged to provide support for the pump body in a direction perpendicular to a central mounting axis of the pump arrangement. 11. A mounting arrangement according to claim 1, comprising at least one bracing element for supporting the pump body in a direction perpendicular to a central mounting axis of the pump arrangement.