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1. WO2020071981 - CONTROL OF PRE-SCR AMMONIA DOSING BASED ON LOOK-AHEAD DATA

Publication Number WO/2020/071981
Publication Date 09.04.2020
International Application No. PCT/SE2019/050873
International Filing Date 17.09.2019
IPC
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
F01N 3/023 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
02for cooling, or for removing solid constituents of, exhaust
021by means of filters
023using means for regenerating the filters, e.g. by burning trapped particles
CPC
F01N 3/023
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
02for cooling, or for removing solid constituents of, exhaust
021by means of filters
023using means for regenerating the filters, e.g. by burning trapped particles
F01N 3/20
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
Applicants
  • SCANIA CV AB [SE]/[SE]
Inventors
  • HARNEMO, Björn
Agents
  • GARDEMARK, Niklas
Priority Data
1851196-404.10.2018SE
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) CONTROL OF PRE-SCR AMMONIA DOSING BASED ON LOOK-AHEAD DATA
(FR) COMMANDE DE DOSAGE D'AMMONIAC PRÉ-SCR SUR LA BASE DE DONNÉES D'ANTICIPATION
Abstract
(EN)
The present disclosure relates to a method for controlling an exhaust gas aftertreatment system, wherein the exhaust gas aftertreatment system comprises a first selective catalytic reduction (SCR) device, a catalytic particulate filter arrangement arranged downstream of the first SCR device, and a second selective catalytic reduction (SCR) device arranged downstream of the catalytic particulate filter arrangement. The method comprises the steps of: - estimating future exhaust conditions based upon predicted vehicle operating conditions (s403); - estimating a future NOx conversion demand based on the estimated future exhaust conditions (s405); - dosing a reducing agent from the first reducing agent dosing device at a rate based at least on the estimated future NOx conversion demand (s406).
(FR)
La présente invention concerne un procédé de commande d'un système de post-traitement de gaz d'échappement, le système de post-traitement de gaz d'échappement comprenant un premier dispositif de réduction catalytique sélective (SCR), un agencement de filtre à particules catalytique disposé en aval du premier dispositif de SCR, et un deuxième dispositif de réduction catalytique sélective (SCR) disposé en aval de l'agencement de filtre à particules catalytique. Le procédé comprend les étapes consistant à : - estimer des conditions d'échappement futures sur la base de conditions de fonctionnement de véhicule prédites (s403) ; - estimer une future demande de conversion de NOx sur la base des conditions d'échappement futures estimées (s405) ; - doser un agent réducteur à partir du premier dispositif de dosage d'agent réducteur à une vitesse basée au moins sur la demande de conversion de NOx future estimée (s406).
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