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1. (WO1997015752) METHOD OF MONITORING A SECONDARY AIR PUMP
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1997/015752 International Application No.: PCT/DE1996/001918
Publication Date: 01.05.1997 International Filing Date: 08.10.1996
IPC:
F01N 3/22 (2006.01) ,F01N 11/00 (2006.01)
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01
MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
N
GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
3
Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
08
for rendering innocuous
10
by thermal or catalytic conversion of noxious components of exhaust
18
characterised by methods of operation; Regulation
22
Regulation of additional air supply only, e.g. using by-passes or variable air pump drives
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01
MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
N
GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
11
Monitoring or diagnostic devices for exhaust-gas treatment apparatus
Applicants:
SIEMENS AKTIENGESELLSCHAFT [DE/DE]; Wittelsbacherplatz 2 D-80333 München, DE (AllExceptUS)
BAYERLE, Klaus [DE/DE]; DE (UsOnly)
ANGERMAIER, Anton [DE/DE]; DE (UsOnly)
Inventors:
BAYERLE, Klaus; DE
ANGERMAIER, Anton; DE
Priority Data:
195 39 938.226.10.1995DE
Title (DE) VERFAHREN ZUR ÜBERPRÜFUNG EINER SEKUNDÄRLUFTPUMPE
(EN) METHOD OF MONITORING A SECONDARY AIR PUMP
(FR) PROCEDE POUR CONTROLER UNE POMPE A AIR SECONDAIRE
Abstract:
(DE) Mit einem Luftmassenmesser wird die von der Sekundärluftpumpe geförderte Sekundärluftmasse gemessen und von einem Steuergerät die gemessene Sekundärluftmasse mit der vom Steuergerät eingestellten Sekundärluftmasse verglichen. Unterscheidet sich die gemessene Sekundärluftmasse um mehr als einen vorgegebenen Wert von der eingestellten Sekundärluftmasse, so wird vom Steuergerät (3) eine Fehlfunktion erkannt.
(EN) An air mass meter is used to measure the secondary air mass displaced by the secondary air pump and the secondary air mass thus measured is compared by a control device with the target secondary air mass set by the control device. If the measured secondary air mass differs by more than a predetermined value from the target secondary air mass, an error function is acknowledged by the control device (3).
(FR) Le volume d'air secondaire refoulé par la pompe à air secondaire est mesuré à l'aide d'un dispositif de mesure approprié et le volume d'air secondaire mesuré est comparé au volume d'air secondaire théorique fixé par un appareil de commande. Si le volume d'air secondaire mesuré diffère de plus d'une valeur prédéterminée du volume d'air secondaire théorique, une fonction d'erreur est détectée par le dispositif de commande (3).
Designated States: US
European Patent Office (AT, BE, CH, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
Publication Language: German (DE)
Filing Language: German (DE)
Also published as:
EP0800618