# US 2014/0150412 A1 · Device for supplying liquid reducing agent and motor vehicle having the device

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- Number: US 2014/0150412 A1
- Document ID: US20140150412A1
- Status: Published application
- Kind: A1
- Application number: 14/173,222
- Filed: 2014-02-05
- Published: 2014-06-05
- Earliest claimed: 2011-08-05
- Assignees: EMITEC Gesellschaft fuer Emissionstechnologie mbH
- Applicants: Emitec Gesellschaft Fuer Emissionstechnologie MBH
- Inventors: Georges Maguin; Jan Hodgson; Sven Schepers
- Web page: https://patentgrep.com/patent/US20140150412A1

## CPC

- F01N 3/206: {Adding periodically or continuously substances to exhaust gases for promoting purification, e.g. catalytic material in liquid form, NOx reducing agents}
- F01N 3/2066: {Selective catalytic reduction [SCR]}
- F01N 2610/02: the substance being ammonia or urea
- F01N 2610/14: Arrangements for the supply of substances, e.g. conduits
- F01N 2610/1406: Storage means for substances, e.g. tanks or reservoirs
- F01N 2610/1466: Means for venting air out of conduits or tanks
- Y02A 50/20: Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
- 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)
- Y02A: TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION

## Abstract

A device for supplying liquid reducing agent for an exhaust gas treatment device, includes at least a tank with an interior in which reducing agent can be stored, an intake in the interior, a delivery device situated in a separate chamber in a tank bottom of the tank, a line leading from the delivery device to the exhaust gas treatment device and passing through the tank bottom at the separate chamber, and a cleaning layer covering the intake. An intermediate space is formed between the intake and the cleaning layer and contains at least one sponge element which can absorb reducing agent and from which the delivery device can extract reducing agent through the intake. A motor vehicle having the device is also provided.

## Claims

### Claim 1

A device for supplying liquid reducing agent for an exhaust gas treatment device, the device comprising:
a tank having a tank bottom and an interior configured to store reducing agent;
a separate chamber disposed in said tank bottom;
a delivery device disposed in said separate chamber for delivering reducing agent;
a line configured to lead from said delivery device to the exhaust gas treatment device, said line passing through said tank bottom at said separate chamber;
an intake disposed in said interior;
a cleaning layer covering said intake;
said intake and said cleaning layer forming an intermediate space therebetween; and
at least one sponge element disposed in said intermediate space, configured to absorb reducing agent and configured to provide reducing agent to be extracted by said delivery device through said intake.

### Claim 2 (depends on 1)

The device according to claim 1, wherein said sponge element forms a plurality of channels from said cleaning layer to said intake.

### Claim 3 (depends on 1)

The device according to claim 1, wherein said sponge element is configured to draw-in reducing agent.

### Claim 4 (depends on 1)

The device according to claim 1, wherein said sponge element covers said intake.

### Claim 5 (depends on 1)

The device according to claim 1, wherein said separate chamber extends from said tank bottom at least partially into said interior, and said intake is disposed at said tank bottom.

### Claim 6 (depends on 1)

The device according to claim 1, wherein said cleaning layer has at least one filter or at least one screen.

### Claim 7 (depends on 1)

The device according to claim 1, wherein said separate chamber has a full circumference and a circumferential direction, and said cleaning layer and said sponge element surround said separate chamber over said full circumference in said circumferential direction.

### Claim 8 (depends on 1)

The device according to claim 1, wherein said intake has a plurality of intake openings, and said sponge element spans all of said intake openings.

### Claim 9 (depends on 1)

A motor vehicle, comprising:
an internal combustion engine;
an exhaust gas treatment device configured to clean exhaust gases from said internal combustion engine; and
a device according to claim 1 configured to feed reducing agent into said exhaust gas treatment device.