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1. WO2013135735 - SCR TREATEMENT OF ENGINE EXHAUST GASES USING TEMPERATURE CONTROL

Publication Number WO/2013/135735
Publication Date 19.09.2013
International Application No. PCT/EP2013/055054
International Filing Date 12.03.2013
IPC
B01D 53/94 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
53Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols
34Chemical or biological purification of waste gases
92of engine exhaust gases
94by catalytic processes
F01N 3/20 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
3Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
08for rendering innocuous
10by thermal or catalytic conversion of noxious components of exhaust
18characterised by methods of operation; Control
20specially adapted for catalytic conversion
B01D 53/90 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
53Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols
34Chemical or biological purification of waste gases
74General processes for purification of waste gases; Apparatus or devices specially adapted therefor
86Catalytic processes
90Injecting reactants
CPC
B01D 2251/2067
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2251Reactants
20Reductants
206Ammonium compounds
2067Urea
B01D 53/90
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
53Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols,
34Chemical or biological purification of waste gases
74General processes for purification of waste gases; Apparatus or devices specially adapted therefor
86Catalytic processes
90Injecting reactants
B01D 53/9409
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
53Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols,
34Chemical or biological purification of waste gases
92of engine exhaust gases
94by catalytic processes
9404Removing only nitrogen compounds
9409Nitrogen oxides
B01D 53/9495
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
53Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols,
34Chemical or biological purification of waste gases
92of engine exhaust gases
94by catalytic processes
9495Controlling the catalytic process
F01N 11/002
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
11Monitoring or diagnostic devices for exhaust-gas treatment apparatus ; , e.g. for catalytic activity
002the diagnostic devices measuring or estimating temperature or pressure in, or downstream of the exhaust apparatus
F01N 2550/02
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
2550Monitoring or diagnosing the deterioration of exhaust systems
02Catalytic activity of catalytic converters
Applicants
  • JAGUAR LAND ROVER LIMITED [GB]/[GB]
Inventors
  • BEVAN, Neil
  • BENDING, Robert
  • DAVIES, Michael
  • JONES, Alan
Agents
  • HOLMES, Matthew
Priority Data
1204326.112.03.2012GB
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) SCR TREATEMENT OF ENGINE EXHAUST GASES USING TEMPERATURE CONTROL
(FR) TRAITEMENT DE RÉDUCTION CATALYTIQUE SÉLECTIVE DES GAZ D'ÉCHAPPEMENT D'UN MOTEUR PAR RÉGULATION DE LA TEMPÉRATURE
Abstract
(EN)
The exhaust system of an internal combustion engine is periodically dosed to recharge an SCR catalyst with ammonia. If dosing is scheduled and exhaust gas temperature is too low to ensure recharging, a forced increase in exhaust gas temperature is effected for the period of dosing. A diagnostic to confirm correct operation of a catalytic converter may advantageously run at the same time.
(FR)
Selon l'invention, le système d'échappement d'un moteur à combustion interne est périodiquement dosé pour recharger un catalyseur de réduction catalytique sélective avec de l'ammoniac. Si le dosage est programmé et que la température des gaz d'échappement est trop basse pour assurer le rechargement, une augmentation forcée de la température des gaz d'échappement est réalisée pendant la période du dosage. Un diagnostic pour confirmer le fonctionnement correct d'un convertisseur catalytique peut être avantageusement lancé en même temps.
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