Method and apparatus for preventing overheating of diesel particulate filter

Disclosed is a method and apparatus for operating an internal combustion engine. The method comprises monitoring the temperature T of a Diesel Particulate Filter (DPF) and monitoring a parameter indicative of engine load, such as engine speed ES or engine torque ET. The detected engine load is used...

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Bibliographische Detailangaben
Hauptverfasser:	ALESSIA TUNINETTI, MORENA BRUNO
Format:	Patent
Sprache:	eng
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 LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING STEAM ENGINES WEAPONS
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Beschreibung
Zusammenfassung:	Disclosed is a method and apparatus for operating an internal combustion engine. The method comprises monitoring the temperature T of a Diesel Particulate Filter (DPF) and monitoring a parameter indicative of engine load, such as engine speed ES or engine torque ET. The detected engine load is used to determine a threshold DPF temperature T_th. A diagnoses test determines that the DPF is overheated if the measured DPF temperature is higher than the threshold DPF temperature. A recovery strategy such as limiting the engine output may be implemented if it is determined that the filter is too hot and is overheating. The method also provides a way of determining the rate of change of the temperature of the filter.