Verfahren und Vorrichtung zur Fehlererkennung bei einer Brennkraftmaschine

摘要

A method of recognising a fault in a fuel system of a forced induction internal combustion engine, especially a compression ignition internal combustion engine, comprises detecting induction charging pressure in an induction duct 105 of the engine and recognising a fault in the system, such as in injector control valves 130 to 133 if the detected charging pressure deviates from an expected value. The fault can be recognised when detected instantaneous pressure exceeds a predetermined threshold value and/or when detected rise in pressure exceeds a predetermined permissible rise, in particular in an otherwise stable engine operating state, such as overrun operation.