Method for detecting a continuous injection during operation of an internal combustion engine, injection system for an internal combustion engine and internal combustion engine

摘要

Method for detecting continuous injection during operation of an internal combustion engine (1) with an injection system (3) having a high-pressure accumulator (13) for a fuel, wherein - a high-pressure in the injection system (3) is monitored as a function of time, wherein - is checked to detect a continuous injection whether the high pressure has fallen by a predetermined continuous injection differential pressure amount (ΔpP) within a predetermined continuous injection time interval (ΔtL), wherein - it is checked whether a shut-off valve connecting the high-pressure accumulator (13) to a fuel reservoir (7) has responded, wherein - a duration injection is detected when - no Absteuerventil has responded in a predetermined test time interval (.DELTA.tM) before the fall of the high pressure, and when - the high pressure within the predetermined continuous injection time interval (.DELTA.tL) by the predetermined continuous injection differential pressure amount (.DELTA.pP ), where - the permanent insert Scratch test is started at a start time when the high pressure falls below a high pressure setpoint (pS) by a predetermined starting differential pressure amount (eS).