DEVICE AND METHOD FOR DETERMINING THE FUNCTION OF AN ENGINE EXHAUST GAS SENSOR

The invention relates to a method to determine the function of a sensor (235; 245; 255; 265) arranged to determine the level of a component in the exhaust gases from an engine (206), comprising the following steps: - to expose (s420; s450) the said sensor (235; 245; 255; 265) to a reference gas, oth...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	MÖRNER, FREDRIK, WADSTRAND, MAGNUS
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	BLASTING CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION COMBUSTION ENGINES CONTROLLING COMBUSTION ENGINES ENGINE PLANTS IN GENERAL GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES LIGHTING MACHINES OR ENGINES IN GENERAL MEASURING MECHANICAL ENGINEERING PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PHYSICS SEPARATION STEAM ENGINES TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE TESTING TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR TRANSPORTING WEAPONS
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	The invention relates to a method to determine the function of a sensor (235; 245; 255; 265) arranged to determine the level of a component in the exhaust gases from an engine (206), comprising the following steps: - to expose (s420; s450) the said sensor (235; 245; 255; 265) to a reference gas, other than the said exhaust gases, with a known level (Ref 1 NOx; Ref 1 Ox) of the said component; - to determine (s430; s460) a level (HmeasNox; HmeasOx) of the said component in the said reference gas by means of the said sensor (235; 245; 255; 265); - to compare (s440; s470) the level (HmeasNox; HmeasOx) determined in this way with the said known level (Ref 1 NOx; Ref 1 Ox) with respect to the said component; and - to assess the said function on the basis of the result of the said comparison. The invention concerns also a computer program product comprising program code (P) for a computer (200; 210) to implement a method according to the invention. The invention concerns also an arrangement to determine the function of a sensor (235; 245; 255; 265) arranged to determine the level of a component in the exhaust gases from an engine (206) and a motor vehicle (100) that is equipped with the arrangement. L'invention concerne un procédé pour déterminer le fonctionnement d'un capteur (235; 245; 255; 265), conçu pour déterminer le niveau d'un composant des gaz d'échappement provenant d'un moteur (206). Le procédé comprend les étapes consistant à : mettre (s420; s450) ledit capteur (235; 245; 255; 265) en présence d'un gaz de référence, autre que les gaz d'échappement, avec un taux connu (Ref 1 NOx; Ref 1 Ox) dudit composant ; déterminer (s430; s460) le taux (HmeasNox; HmeasOx) dudit composant dans le gaz de référence au moyen du capteur (235; 245; 255 ; 265) ; comparer (s440; s470) le taux (HmeasNox; HmeasOx) ainsi déterminé au taux connu (Ref 1 NOx; Ref 1 Ox) par rapport audit composant ; et évaluer le fonctionnement sur la base du résultat de la comparaison. L'invention concerne aussi un produit de programme informatique comprenant un code de programme (P) permettant à un ordinateur (200; 210) de mettre en oeuvre le procédé de l'invention. L'invention concerne de plus un système permettant de déterminer le fonctionnement d'un capteur (235; 245; 255; 265), conçu pour déterminer le taux d'un composant dans les gaz d'échappement provenant d'un moteur (206), et un véhicule à moteur (100) équipé de ce système.