Method to diagnose a fault in a fuel injection system of an internal combustion engine

Method to diagnose a fault in a fuel injection system of an internal combustion engine

A method to diagnose a fault in a fuel injection system 40 of an internal combustion engine 10 is disclosed. The method comprises the steps of commanding an injection pulse for injecting test quantity of fuel into an engine cylinder 20, determining the torque TRa released to an engine crankshaft 30...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: BASTIANELLI MICHELE, GIROTTO MARCO, FAZIO TOMMASO DE
Format: Patent
Sprache:chi ; eng
Schlagworte:
BLASTING
COMBUSTION ENGINES
CONTROLLING COMBUSTION ENGINES
HEATING
HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
LIGHTING
MECHANICAL ENGINEERING
WEAPONS
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Beschreibung
Zusammenfassung:A method to diagnose a fault in a fuel injection system 40 of an internal combustion engine 10 is disclosed. The method comprises the steps of commanding an injection pulse for injecting test quantity of fuel into an engine cylinder 20, determining the torque TRa released to an engine crankshaft 30 due to said injection pulse, of calculating the difference between this released torque TRa and an expected value TRe for said torque, and of detecting a fault in the fuel injection system 40 if said difference exceeds a threshold E*. Also disclosed in an associated computer program for use in an engine ECU.