# US 10,767,540 B2 · Exhaust gas treatment apparatus

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- Number: US 10,767,540 B2
- Document ID: US10767540B2
- Status: Granted
- Kind: B2
- Application number: 15/576,807
- Filed: 2015-06-03
- Published: 2018-10-25
- Granted: 2020-09-08
- Earliest claimed: 2015-06-03
- Assignees: Volvo Truck Corporation
- Applicants: Volvo Truck Corporation
- Inventors: Martin Petersson; Johan Törnberg
- Web page: https://patentgrep.com/patent/US10767540B2

## CPC

- F01N 9/00: Electrical control of exhaust gas treating apparatus (monitoring or diagnostic devices for exhaust-gas treatment apparatus F01N11/00; conjoint electrical control of two or more combustion engine functions F02D43/00)
- B01D 53/0438: {Cooling or heating systems}
- B01D 53/0454: {Controlling adsorption (controlling temperature swing adsorption B01D53/0462, controlling pressure swing adsorption B01D53/047)}
- F01N 3/05: by means of air, e.g. by mixing exhaust with air (silencers working by addition of air to exhaust F01N1/14; arrangements for the supply of additional air for the thermal or catalytic conversion of noxious components of exhaust F01N3/30)
- F01N 3/0807: {by using absorbents or adsorbents}
- F01N 3/085: {Sulfur or sulfur oxides}
- F01N 13/082: {of tailpipe, e.g. with means for mixing air with exhaust for exhaust cooling, dilution or evacuation (F01N13/20 takes precedence)}
- F01N 13/1805: {Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body (pipe joints in general F16L; fixing auxiliaries in motor vehicles in general B60K)}
- F01N 13/1822: {for fixing exhaust pipes or devices to vehicle body}
- B01D 2253/102: Carbon
- B01D 2253/108: Zeolites
- B01D 2253/1124: Metal oxides
- B01D 2259/4566: for use in transportation means
- F01N 2240/02: a heat exchanger
- F01N 2240/18: an adsorber or absorber
- F01N 2450/10: Fitting temporarily exhaust apparatus on exhaust conduit, e.g. in confined environment, garage or the like
- F01N 2590/08: for heavy duty applications, e.g. trucks, buses, tractors, locomotives
- F01N 2900/1404: Exhaust gas temperature
- 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)
- B01D: SEPARATION (separating solids from solids by wet methods B03B, B03D; by pneumatic jigs or tables B03B; by other dry methods B07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B03C; centrifuges, vortex apparatus B04; presses per se for squeezing-out liquid from liquid-containing material B30B9/02; treatment of water C02F, e.g. softening by ion-exchange C02F1/42; {arrangements of air intake cleaners in gas turbine plants F02C7/05} ; arrangements or mounting of filters in air-conditioning, air-humidification or ventilation F24F13/28)
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION

## Abstract

An exhaust gas treatment apparatus is provided for use together with a diesel engine in an indoor environment, where the diesel engine is part of, e.g., a vehicle or other machinery. A method of controlling such an exhaust gas treatment apparatus is also provided.

## Claims

### Claim 1

A mobile exhaust gas treatment apparatus, comprising:
an exhaust conduit having a first end adapted to be removably connected to an exhaust pipe of an internal combustion engine;
an adsorption bed comprising an adsorbent material for the adsorption of elements of engine exhaust gases, the adsorption bed being operatively connected to a second end of the exhaust conduit for receiving the engine exhaust gases;
a heat adjustment unit arranged upstream of the adsorption bed and downstream of the first end of the exhaust conduit, wherein the heat adjustment unit is configured to adjust a temperature of the engine exhaust gas to be within a temperature range selected based on the adsorbent material,
and
a control unit for controlling an operation of the heat adjustment unit, wherein the control unit is configured to receive an indication of the temperature of the engine exhaust gas and to operate the heat adjustment unit based on the temperature of the engine exhaust gas, the temperature of the exhaust gas to be within the temperature range selected based on the adsorbent material,
wherein the exhaust gas treatment apparatus further comprises:
a fan adapted to control an exhaust gas throughput of the adsorption bed, and
a temperature sensor connected to the control unit and arranged to monitor the engine exhaust gas temperature at or upstream of the heat adjustment unit, the temperature sensor adapted to detect increasing change in temperature being indicative of the start of a regeneration process and to thereby activate the fan,
wherein the adsorbent material comprises at least one of CaO, BaO, beta zeolites, and activated carbon.

### Claim 2 (depends on 1)

The mobile exhaust gas treatment apparatus according to claim 1, wherein the first end of the exhaust conduit is adapted to be removably fitted to different types of exhaust pipes.

### Claim 3 (depends on 1)

The mobile exhaust gas treatment apparatus according to claim 1, wherein the heat adjustment unit is a heat exchanger.

### Claim 4 (depends on 3)

The mobile exhaust gas treatment apparatus 4 according to claim 3, wherein the heat exchanger is adapted to be connect to a heating or cooling system arranged in connection the internal combustion engine to which the exhaust gas treatment apparatus is configured to be connected.

### Claim 5 (depends on 1)

The mobile exhaust gas treatment apparatus according to claim 1, wherein the heat adjustment unit comprises a diffusor pipe for allowing mixing of the engine exhaust gases with ambient air.

### Claim 6 (depends on 1)

The mobile exhaust gas treatment apparatus according to claim 1, wherein the adsorption bed is adapted for at least one of ionic bonding or adsorption by a chemical reaction with the adsorption material.

### Claim 7 (depends on 1)

The mobile exhaust gas treatment apparatus according to claim 1, wherein the exhaust gas treatment apparatus is arranged for being removably connected to the exhaust pipe when a vehicle equipped with the internal combustion engine, to which the exhaust gas treatment apparatus is configured to be connected, is in a standstill condition.

### Claim 8

A method for treating exhaust gases of an internal combustion engine of a vehicle using a mobile exhaust gas treatment apparatus, wherein the mobile exhaust gas treatment apparatus further comprises a fan adapted to control an exhaust gas throughput of an adsorption bed and a temperature sensor connected to a control unit and arranged to monitor an engine exhaust gas temperature at or upstream of a heat adjustment unit, wherein the method comprises the steps of:
connecting the mobile exhaust gas treatment apparatus to an exhaust pipe of the internal combustion engine;
identifying the engine exhaust gas temperature;
adapting the exhaust gas temperature prior to the engine exhaust gases entering an adsorption bed in the mobile exhaust gas treatment apparatus so that the exhaust gas temperature is within a temperature range selected based on an adsorbent material in the adsorption bed; and
subjecting the adsorption bed for the exhaust gases for adsorption of elements of the engine exhaust gases,
wherein the step of adapting the exhaust gas temperature via controlling the operation of the heat adjustment unit in the mobile exhaust gas treatment apparatus is based on the engine exhaust gas temperature and the adsorption temperature range, the step of subjecting comprises treating the exhaust gases via the adsorption bed during a regeneration of an exhaust system of the vehicle equipped with the internal combustion engine, the adsorbent material comprise at least one of CaO, BaO, beta zeolites, and activated carbon, and the temperature sensor adapted to detect a increasing change in temperature being indicative of the start of the regeneration of the exhaust system and to thereby activate the fan.

### Claim 9 (depends on 8)

The method according to claim 8, wherein the method further comprises the step of: temporarily connecting the mobile exhaust gas treatment apparatus to the exhaust pipe of the internal combustion engine when the vehicle equipped with the internal combustion engine is in a standstill condition.

### Claim 10 (depends on 9)

The method according to claim 9, wherein the method further comprises the step of: disconnecting the mobile exhaust gas treatment apparatus from the exhaust pipe of the internal combustion engine after the exhaust gas treatment and before the vehicle takes off.