Anordning och förfarande för att avgöra funktion hos en sensor för fastställande av halt av en komponent hos avgaser från en motor

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

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Bibliographische Detailangaben
Hauptverfasser:	MAGNUS WADSTRAND, FREDRIK MÖRNER
Format:	Patent
Sprache:	swe
Schlagworte:	BLASTING 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 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 TESTING TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR TRANSPORTING WEAPONS
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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.