Method of controlling a diesel particulate filter

Embodiments of the invention provide a method and apparatus for controlling a diesel particulate filter (282). The control is carried out with the aid of a soot loading model selected from a plurality of available soot loading models including at least one soot loading physical model which makes use...

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Bibliographische Detailangaben
Hauptverfasser:	GIACOMO LATROFA, GIUSEPPE SCHIAVONE, MARKUS HEMM, CHRISTIAN SCHAEFER
Format:	Patent
Sprache:	chi ; 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:	Embodiments of the invention provide a method and apparatus for controlling a diesel particulate filter (282). The control is carried out with the aid of a soot loading model selected from a plurality of available soot loading models including at least one soot loading physical model which makes use of signals from an exhaust gas pressure sensor (283). A reliability score (RS) is allocated to each soot loading model such that the soot loading model with the best reliability score is used for the diesel particulate filter control. The method includes identifying a DF'F parking effect (S20) if an engine shut-off time is longer than a first time threshold (t1) and a DPF inlet temperature is lower than a first temperature threshold (T1); if a DPF parking effect is identified, then the reliability scores of all remaining (non-physical) soot loading models are changed (S22), and use of the soot loading physical model is avoided or disabled to help the control of the diesel particulate filter (282).