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1. WO2022112014 - METHOD AND APPARATUS FOR ELECTRICALLY HEATING A CATALYTIC CONVERTER

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Publication Number WO/2022/112014
Publication Date 02.06.2022
International Application No. PCT/EP2021/081397
International Filing Date 11.11.2021
IPC
F01N 3/20 2006.1
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 9/00 2006.1
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
9Electrical control of exhaust gas treating apparatus
F01N 3/32 2006.1
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
24characterised by constructional aspects of converting apparatus
30Arrangements for supply of additional air
32using air pumps
CPC
F01N 2240/16
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
2240Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
16an electric heater, i.e. a resistance heater
F01N 2900/08
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
2900Details of electrical control or of the monitoring of the exhaust gas treating apparatus
06Parameters used for exhaust control or diagnosing
08said parameters being related to the engine
F01N 2900/1602
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
2900Details of electrical control or of the monitoring of the exhaust gas treating apparatus
06Parameters used for exhaust control or diagnosing
16said parameters being related to the exhaust apparatus, e.g. particulate filter or catalyst
1602Temperature of exhaust gas apparatus
F01N 2900/1626
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
2900Details of electrical control or of the monitoring of the exhaust gas treating apparatus
06Parameters used for exhaust control or diagnosing
16said parameters being related to the exhaust apparatus, e.g. particulate filter or catalyst
1626Catalyst activation temperature
F01N 3/2013
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
2006Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating
2013using electric or magnetic heating means
F01N 3/2026
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
2006Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating
2013using electric or magnetic heating means
2026directly electrifying the catalyst substrate, i.e. heating the electrically conductive catalyst substrate by joule effect
Applicants
  • VITESCO TECHNOLOGIES GMBH [DE]/[DE]
Inventors
  • KLEINER, Florian
  • ACHLEITNER, Erwin
  • KURNIAWAN, Hendra
  • KOLODZIEJ, Soufiane
Priority Data
10 2020 214 911.927.11.2020DE
10 2021 205 533.831.05.2021DE
Publication Language German (de)
Filing Language German (DE)
Designated States
Title
(DE) VERFAHREN UND VORRICHTUNG ZUM ELEKTRISCHEN BEHEIZEN EINES ABGASKATALYSATORS
(EN) METHOD AND APPARATUS FOR ELECTRICALLY HEATING A CATALYTIC CONVERTER
(FR) PROCÉDÉ ET DISPOSITIF POUR CHAUFFER ÉLECTRIQUEMENT UN CONVERTISSEUR CATALYTIQUE
front page image
Abstract
(DE) Verfahren und Vorrichtung zum elektrischen Beheizen eines Abgaskatalysators Es wird ein Verfahren und eine Vorrichtung zum Aufheizen eines, in einem Abgasstrang (25) einer Verbrennungskraftmaschine (10) angeordneten, eine elektrische Heizeinrichtung (37) aufweisenden Abgaskatalysators (35) angegeben, wobei mit Hilfe einer Luftfördereinrichtung (70) ein Sekundärluft-Massenstrom (SLM) in den Abgastrakt (25) an einer Stelle stromaufwärts des Abgaskatalysators (35) zuführbar ist, und die elektrische Heizeinrichtung (35) zeitlich vor dem Start der Verbrennungskraftmaschine (10) aktiviert wird. Die Temperatur des Abgaskatalysators (35) wird überwacht und kein Sekundärluft-Massenstrom (SLM) oder ein Sekundärluft-Massenstrom (SLM) mit einer ersten Fördermenge wird in den Abgastrakt (25) zugeführt, bis die Katalysatortemperatur (KT) einen vorgestimmten ersten Schwellenwert (SW1) erreicht hat und nachdem die Katalysatortemperatur (KT) den vorbestimmten ersten Schwellenwert (SW1) erreicht hat wird der Sekundärluft-Massenstrom (SLM) mit einer zweiten Fördermenge in den Abgastrakt (25) zugeführt, die größer ist als die erste Fördermenge.
(EN) The invention relates to a method and an apparatus for electrically heating a catalytic converter (35) arranged in an exhaust line (25) of an internal combustion engine (10) and comprising an electric heating device (37), wherein a secondary air mass flow (SLM) can be supplied with the aid of an air delivery device (70) into the exhaust tract (25) at a point upstream of the catalytic converter (35), and the electric heating device (35) is activated temporally before the internal combustion engine (10) is started. The temperature of the catalytic converter (35) is monitored and no secondary air mass flow (SLM) or a secondary air mass flow (SLM) with a first delivery volume is supplied into the exhaust tract (25) until the catalytic converter temperature (KT) has reached a predefined first threshold value (SW1) and, after the catalytic converter temperature (KT) has reached the predefined first threshold value (SW1), the secondary air mass flow (SLM) is supplied into the exhaust tract (25) with a second delivery volume which is greater than the first delivery volume.
(FR) L'invention concerne un procédé et un dispositif pour chauffer électriquement un convertisseur catalytique (35) disposé dans une ligne d'échappement (25) d'un moteur à combustion interne (10), et comprenant un dispositif de chauffage électrique (37), un débit massique d'air secondaire (SLM) pouvant être alimenté à l'aide d'un dispositif d'amenée d'air (70) dans le tuyau des gaz d'échappement (25) au niveau d'un point en amont du convertisseur catalytique (35) et le dispositif de chauffage électrique (35) étant activé temporellement avant le démarrage du moteur à combustion interne (10). La température du convertisseur catalytique (35) est contrôlée et aucun débit massique d'air secondaire (SLM) n'est fourni ou un débit massique d'air secondaire (SLM) est fourni avec une première quantité transportée dans le tuyau des gaz d'échappement (25) jusqu'à ce que la température du convertisseur (KT) atteigne une première valeur seuil prédéfinie (SW1) et, après que la température du convertisseur (KT) a atteint la première valeur seuil prédéfinie (SW1), le débit massique d'air secondaire (SLM) est fourni dans le tuyau des gaz d'échappement (25) avec une deuxième quantité transportée supérieure à la première quantité transportée.
Related patent documents
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Latest bibliographic data on file with the International Bureau
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