# US 9,003,775 B2 · Fluid dosing device

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- Number: US 9,003,775 B2
- Document ID: US9003775B2
- Status: Granted
- Kind: B2
- Application number: 13/321,201
- Filed: 2010-05-20
- Published: 2012-04-12
- Granted: 2015-04-14
- Earliest claimed: 2009-05-20
- Assignees: Delphi International Operations Luxembourg S.A.R.L.
- Applicants: Keith E. Wright; Michael Peter Cooke; Phillip D. Thompson; Simon Coster; Nick J. Oldfield; Martin Paul Hardy
- Inventors: Keith E. Wright; Michael Peter Cooke; Phillip D. Thompson; Simon Coster; Nick J. Oldfield; Martin Paul Hardy
- Web page: https://patentgrep.com/patent/US9003775B2

## CPC

- F01N 3/2066: {Selective catalytic reduction [SCR]}
- F01N 3/36: Arrangements for supply of additional fuel
- F01N 13/18: Construction facilitating manufacture, assembly, or disassembly
- F01N 2610/02: the substance being ammonia or urea
- F01N 2610/14: Arrangements for the supply of substances, e.g. conduits
- F01N 2610/1433: Pumps
- F01N 2610/1453: Sprayers or atomisers; Arrangement thereof in the exhaust apparatus
- Y02T 10/12: Improving ICE efficiencies
- F01N: GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES (arrangements in connection with gas exhaust of propulsion units in vehicles B60K13/00; combustion-air intake silencers specially adapted for, or arranged on, internal-combustion engines F02M35/00; protecting against, or damping, noise in general G10K11/16)
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION

## Abstract

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.

## Claims

### Claim 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.

### Claim 2 (depends on 1)

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.

### Claim 3 (depends on 1)

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.

### Claim 4 (depends on 3)

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.

### Claim 5 (depends on 3)

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.

### Claim 6 (depends on 1)

A mounting arrangement according to claim 1, wherein the packing is arranged to damp vibration of the pump body.

### Claim 7 (depends on 1)

A mounting arrangement according to claim 1, wherein the packing is arranged to thermally insulate the pump body.

### Claim 8 (depends on 1)

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.

### Claim 9 (depends on 1)

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.

### Claim 10 (depends on 1)

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.

### Claim 11 (depends on 1)

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.