GB2511537A - Improved Fuel Vaporiser System - Google Patents

Improved Fuel Vaporiser System Download PDF

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Publication number
GB2511537A
GB2511537A GB1304021.7A GB201304021A GB2511537A GB 2511537 A GB2511537 A GB 2511537A GB 201304021 A GB201304021 A GB 201304021A GB 2511537 A GB2511537 A GB 2511537A
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GB
United Kingdom
Prior art keywords
fuel
gas treatment
exhaust gas
fuel vaporiser
exhaust
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB1304021.7A
Other versions
GB201304021D0 (en
GB2511537B (en
Inventor
Jonathan Muwanga Kisenyi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ford Global Technologies LLC
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Ford Global Technologies LLC
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Filing date
Publication date
Application filed by Ford Global Technologies LLC filed Critical Ford Global Technologies LLC
Priority to GB1304021.7A priority Critical patent/GB2511537B/en
Publication of GB201304021D0 publication Critical patent/GB201304021D0/en
Priority to CN201420013368.7U priority patent/CN203783693U/en
Publication of GB2511537A publication Critical patent/GB2511537A/en
Application granted granted Critical
Publication of GB2511537B publication Critical patent/GB2511537B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/023—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles
    • F01N3/025—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles using fuel burner or by adding fuel to exhaust
    • F01N3/0253—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles using fuel burner or by adding fuel to exhaust adding fuel to exhaust gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/009—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series
    • F01N13/0093—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series the purifying devices are of the same type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/009—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
    • F01N13/009—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series
    • F01N13/0097—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series the purifying devices are arranged in a single housing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
    • F01N3/0828—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents characterised by the absorbed or adsorbed substances
    • F01N3/0842—Nitrogen oxides
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/0807—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by using absorbents or adsorbents
    • F01N3/0871—Regulation of absorbents or adsorbents, e.g. purging
    • F01N3/0885—Regeneration of deteriorated absorbents or adsorbents, e.g. desulfurization of NOx traps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
    • F01N3/36—Arrangements for supply of additional fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/03—Adding substances to exhaust gases the substance being hydrocarbons, e.g. engine fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/06—Adding substances to exhaust gases the substance being in the gaseous form
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/10—Adding substances to exhaust gases the substance being heated, e.g. by heating tank or supply line of the added substance
    • F01N2610/102—Adding substances to exhaust gases the substance being heated, e.g. by heating tank or supply line of the added substance after addition to exhaust gases, e.g. by a passively or actively heated surface in the exhaust conduit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/14—Arrangements for the supply of substances, e.g. conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/14—Arrangements for the supply of substances, e.g. conduits
    • F01N2610/1453—Sprayers or atomisers; Arrangement thereof in the exhaust apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
    • F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
    • F01N3/2006—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating
    • F01N3/2033—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating using a fuel burner or introducing fuel into exhaust duct
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Processes For Solid Components From Exhaust (AREA)

Abstract

A fuel vaporiser assembly 1 for regenerating a plurality of exhaust gas treatment modules 2a, 2b in an exhaust system 4 of an internal combustion engine. The fuel vaporiser assembly comprises a fuel vaporiser 6, and a branched connecting member 8 to connect the fuel vaporiser to a plurality of fuel outlets 9a, 9b in the exhaust system for the purpose of regenerating the exhaust gas treatment modules. The branched connecting member may comprise two branches in the form of a T-junction or Y-junction. The exhaust gas treatment modules may be one or more lean NOx traps and/or diesel particulate filters. The assembly may comprise a control system and at least one sensor which measures at least one of pressure, temperature or concentrations of exhaust gases.

Description

Improved fuel vaporiser assembly This invention relates to a fuel vaporiser assembly for regenerating a plurality of exhaust gas treatment modules using a single fuel vaporiser, and particularly but not exclusively relates to a fuel vaporiser system for regenerating more than one lean NOx trap and/or diesel particulate filter.
Background
Lean burn internal combustion engines provide increased fuel efficiency, which results in lower operating costs. However, there are inherent challenges in controlling the NOx emissions from lean burn engines. Mechanisms that reduce the NOx in lean exhaust may allow for the more wide-spread usage of these efficient lean burn engines.
Recent trends in legislation provide environmental drivers for vehicle manufactures to reduce the amount of NOx emissions and particulates produced from their engines. Lean NOx traps (LNT) may be integrated into a vehicle's exhaust system as a means to reduce the emission of nitrogen oxides from lean burn engines. Similarly, installation of diesel particulate filters (DPF) results in a decrease in diesel particulate matter (soot) from the exhaust gas of a diesel engine.
Commonly, both LNTs and DPFs use zeolitic materials to filter and absorb the pollutants that are present in the exhaust gasses. Such filters may become less efficient with use and may be designed to regenerate by means of a cleaning cycle. Cleaning may also be required as part of a periodic maintenance schedule in order to avoid damaging the filter.
In one such cleaning mechanism, vaporised fuel is injected into the exhaust system. Ignition of the vaporised fuel acts to heat the LNT/DPF to the combustion temperatures of the trapped pollutants.
An exhaust system may be provided with more than one LNT and/or DPF, which are disposed at various locations in the exhaust system. It is known to provide a fuel vaporising system with a plurality of individual fuel vaporiser assemblies for the purposes of cleaning a respective number of individual LNT5 and/or DPEs. These previously-proposed systems have costs associated with the installation and control of multiple fuel vaporisers and injectors and an increased risk of component failure.
Statement of invention
According to the present invention there is provided an exhaust system of an internal combustion engine and a fuel vaporiser assembly for regenerating a plurality of exhaust gas treatment modules in the exhaust system. The fuel vaporiser assembly may comprise a fuel vaporiser and a branched connecting member.
The branched connecting member may be configured to connect the fuel vaporiser to a plurality of fuel outlets in the exhaust system for the purpose of regenerating discrete exhaust gas treatment modules. In this way, the fuel vaporiser assembly obviates the need for a plurahty of fuel vaporisers. A fuel vaporiser assembly in accordance with the present invention serves to reduce component inventory and therefore decrease the cost and the risk of failure of the fuel vaporiser assembly.
The branched connecting member may have any desired number of branches. In one embodiment, the branched connecting member comprises a bifurcation into two branches, which may be arranged as a T-juction or a V-junction. In this way, the connecting member may be configured to connect the fuel vaporiser to two or more fuel outlets for the purpose of regenerating separate exhaust gas treatment modules.
The exhaust gas treatment module may comprise one or more lean NOx traps. The exhaust gas treatment module may comprise one or more diesel particulate filters. The exhaust gas treatment modules may comprise one or more selective catalytic reduction (SCR) systems.
The fuel vaporiser assembly may comprise a control system. The exhaust system may comprise one or more sensors that may be configured to provide an input into the control system for the purpose of controlling the fuel vaporiser assembly. The sensors may be configured to measure at least one of: pressure, temperature or concentrations of exhaust gases in the exhaust system. As the fuel vaporiser assembly comprises a single fuel vaporiser, the control system may be inherently more simple than a fuel vaporiser assembly with a plurality of fuel vaporisers.
List of figures For a better understanding of the present disclosure, and to show more clearly how it may be carried into effect, reference will now be made, by way of example, the accompanying drawing.
Figure 1 is a schematic of the a fuel vaporiser assembly for an exhaust system according to an embodiment of the present invention,
Detailed description
Figure 1 depicts a fuel vaporiser assembly 1 for regenerating a plurality of exhaust gas treatment modules 2a, 2b in an exhaust system 4 of an internal combustion engine. The fuel vaporiser assembly comprises a fuel vaporiser 6 and a branched connecting member 8. The branched connecting member 8 is configured to connect the fuel vaporiser to a plurality of fuel outlets 9a, 9b in the exhaust system 4 for the purpose of regenerating the discrete exhaust gas treatment modules 2a, 2b.
A first exhaust gas treatment module 2a is connected to a second exhaust gas treatment module 2b by virtue of one or more portions of exhaust pipe. The first exhaust gas treatment module 2a is upstream of the second exhaust gas treatment module 2b. The exhaust gas treatment modules 2a, 2b comprise one or more lean NOx traps (LNT) 1 2a, 1 2b one or more diesel particulate filters (DPF) 14 and/or one or more selective catalytic reduction (SCR) systems 16. In the illustrated embodiment, the first exhaust gas treatment module 2a comprises the LNT 12a and the second exhaust gas treatment module 2b comprises the LNT 12b, the DPF 14 and the SCR 16.
The first fuel outlet 9a is disposed proximate to, and upstream of, the first exhaust gas treatment module 2a. The second fuel outlet Gb is disposed proximate to, and upstream of, the second exhaust gas treatment module 2b. In an alternative embodiment, at least one of the fuel outlets 9a, 9b is integral to the respective exhaust gas treatment module 2a, 2b.
The branched connecting member 8 comprises two branches ba, lob, which are configured to deliver vaporised fuel from the fuel vaporiser 6 to the fuel outlets 9a,9b in the exhaust system 4. The branched connecting member 8 comprises a T-junction or a Y-junction. In an alternative embodiment, the branched connecting member 8 is provided with additional branches which connect the fuel vaporiser 6 to respective additional fuel outlets for the purpose of regenerating additional exhaust gas treatment modules.
The first branch ba connects to the first fuel outlet 9a and the second branch lOb connects to the second fuel outlet 9b. In this way, the fuel vaporiser 6 is connected to two discrete fuel outlets 9a, 9b in the exhaust system 4.
The exhaust system 4 comprises one or mare sensors 18 that may for example be used to measure at least one of: temperature; pressure; concentration of exhaust gases and/or any other parameter related to the operation of the exhaust system 4. The fuel vaporiser assembly 1 comprises a control system that is configured to accept input from the sensors 18 in exhaust system 4 for the purpose of controlling the operation of the fuel vaporiser assembly 1.
In the illustrated embodiment, the fuel vaporiser 1 serves to provide vaparised fuel to two independent exhaust gas treatment modules 2a, 2b for the purposes of regenerating the exhaust gas treatment modules. In this way, the number of requisite fuel vaporisers is minimised, which inherently reduces the component inventory, leading to a reduction in cost, a reduced risk of component failure and a simplified control system.
The regeneration cycle of an exhaust gas treatment module In use of the exhaust system 4, the exhaust gas treatment modules 2a, 2b trap pollutants that are present the exhaust gasses. When the exhaust gas treatment modules 2a, 2b become full or require cleaning, the output from the sensors 18 indicates that regeneration of the exhaust gas treatment modules 2a, 2b is appropriate. The control system of the fuel vaporiser 1 sends a control signal to the fuel vapariser 6, causing it to deliver fuel under pressure through the branches 1 Oa, 1 Ob of the branched connecting member 8 into the respective fuel outlets 9a, 9b. The vaporised fuel is then ignited as it enters from the fuel outlets into the exhaust gas treatment modules 2a, 2b.
The ignition of the vaporised fuel acts to heat the exhaust gas treatment modules 2a, 2b, which causes the trapped pollutants to be converted into by-products, e.g. the conversion of trapped NOx and diesel particulates into nitrogen and water. The conversion and expulsion of the trapped pollutants serves to regenerate the exhaust gas treatment modules 2a, 2b.
Reference numerals 1. Fuel vaporiser assembly 2. Exhaust gas treatment module (2a, 2b) 4. Exhaust system 6. Fuel vaporiser 8. Branched connecting member 9. Fuel outlet (9a, 9b) 10. Branches (ba, lOb) 12. Lean NOx trap (LNT) (12a, 12b) 14. Diesel particulate filter (DPF) 16. Selective catalytic reduction (5CR) system 18. Sensor

Claims (11)

  1. Claims 1 A fuel vaporiser assembly for regenerating a plurality of exhaust gas treatment modules in an exhaust system of an internal combustion engine, wherein the fuel vaporiser assembly comprises: a fuel vaporiser; and a branched connecting member configured to connect the fuel vaporiser to a plurality of fuel outlets in the exhaust system for the purpose of regenerating the exhaust gas treatment modules.
  2. 2. A fuel vaporiser assembly according to claim 1, wherein the branched connecting member comprises two branches.
  3. 3. A fuel vaporiser assembly according to claim I or 2, wherein the branched connecting member comprises a 1-junction.
  4. 4. A fuel vaporiser assembly according to claim 1 or 2, wherein the branched connecting member comprises a Y-junction.
  5. 5. A fuel vaporiser assembly according to any preceding claim, wherein the exhaust gas treatment module comprises one or more lean NOx traps.
  6. 6. A fuel vaporiser assembly according to any preceding claim, wherein the exhaust gas treatment module comprises one or more diesel particulate filters.
  7. 7. A fuel vaporiser assembly according to any preceding claim, further comprising a control system.
  8. 8. A fuel vaporiser assembly according to claim 7, wherein the exhaust system further comprises at least one sensor that is configured to provide an input into the control system for the purpose of controlling the fuel vaporiser assembly.
  9. 9. A fuel vaporiser assembly according to claim 8, wherein the sensor is configured to measure at least one of: pressure, temperature or concentrations of exhaust gases in the exhaust system.
  10. 10. A vehicle having a fuel vaporising assembly as claimed in any of the preceding claims.
  11. 11. A fuel vaporiser assembly as described herein, with reference to, and as shown in the accompanying figures.
GB1304021.7A 2013-03-06 2013-03-06 Improved fuel vaporiser assembly Expired - Fee Related GB2511537B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB1304021.7A GB2511537B (en) 2013-03-06 2013-03-06 Improved fuel vaporiser assembly
CN201420013368.7U CN203783693U (en) 2013-03-06 2014-01-09 Fuel evaporator component and vehicle with same

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Application Number Priority Date Filing Date Title
GB1304021.7A GB2511537B (en) 2013-03-06 2013-03-06 Improved fuel vaporiser assembly

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GB201304021D0 GB201304021D0 (en) 2013-04-17
GB2511537A true GB2511537A (en) 2014-09-10
GB2511537B GB2511537B (en) 2018-04-18

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017201399A1 (en) 2017-01-30 2018-08-02 Ford Global Technologies, Llc aftertreatment system
US10301990B2 (en) 2017-01-05 2019-05-28 Ford Global Technologies, Llc Methods and systems for an exhaust gas aftertreatment system

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1746265A1 (en) * 2005-07-19 2007-01-24 Toyota Jidosha Kabushiki Kaisha Control device and control method of exhaust purification device
FR2935740A3 (en) * 2008-09-09 2010-03-12 Renault Sas Fuel vapor injecting nozzle for exhaust line of internal combustion engine, has hollow rod including branches, where each branch has free end provided with lateral openings for injecting fuel vapor in exhaust pipe

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1746265A1 (en) * 2005-07-19 2007-01-24 Toyota Jidosha Kabushiki Kaisha Control device and control method of exhaust purification device
FR2935740A3 (en) * 2008-09-09 2010-03-12 Renault Sas Fuel vapor injecting nozzle for exhaust line of internal combustion engine, has hollow rod including branches, where each branch has free end provided with lateral openings for injecting fuel vapor in exhaust pipe

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10301990B2 (en) 2017-01-05 2019-05-28 Ford Global Technologies, Llc Methods and systems for an exhaust gas aftertreatment system
DE102017201399A1 (en) 2017-01-30 2018-08-02 Ford Global Technologies, Llc aftertreatment system

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