Method of diagnosing and recovering an injector failure in an internal combustion engine

A method for detecting and recovering an injector which is stuck in the open position in an internal combustion engine power-train system is disclosed. The method comprises detecting an exhaust gas temperature and temperature gradient and comparing it to the expected exhaust gas temperature and temp...

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Bibliographische Detailangaben
Hauptverfasser:	LUCA LAURITANO, IVAN PELIZZONI
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 SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF 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 for detecting and recovering an injector which is stuck in the open position in an internal combustion engine power-train system is disclosed. The method comprises detecting an exhaust gas temperature and temperature gradient and comparing it to the expected exhaust gas temperature and temperature gradient based on the engine operating parameters. The parameters include the fuel quantity requested and/or the rotary engine speed and/or the engine combustion mode. If the detected exhaust temperature and temperature gradient exceeds the expected temperature and temperature gradient then an engine recovery strategy is carried out. The recovery strategy may include switching off each injector in turn until it can be established which injector is faulty. Also disclosed is a computer program for carrying out the method and an apparatus including an engine control unit suitable for carrying out the method.