Method operating a diesel particulate filter by determining filter efficiency

A method to operate a diesel particulate filter DPF 15 of a diesel engine 11 equipped with a soot-sensor 18 located in an outlet 19 of the diesel particulate filter, the soot-sensor operating according to a succession of soot loading phases separated by a regeneration phase, the method comprising th...

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Bibliographische Detailangaben
Hauptverfasser:	ALESSIA TUNINETTI, CRISTIAN TAIBI
Format:	Patent
Sprache:	eng
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 LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING STEAM ENGINES TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE WEAPONS
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Beschreibung
Zusammenfassung:	A method to operate a diesel particulate filter DPF 15 of a diesel engine 11 equipped with a soot-sensor 18 located in an outlet 19 of the diesel particulate filter, the soot-sensor operating according to a succession of soot loading phases separated by a regeneration phase, the method comprising the steps of setting a borderline value of the efficiency of the diesel particulate filter, resetting a value of a counter, during a regeneration phase of the soot-sensor, where the value represents a soot loading level of the soot-sensor, iteratively increasing the value of this counter during a next soot loading phase of the soot-sensor until the value reaches a predetermined threshold value and then detecting an unsuited efficiency of the diesel particulate filter if a next regeneration phase of the soot-sensor begins when the value of the counter is below said predetermined threshold value of the counter. Apparatus is also claimed.