Method for diagnosing a tank ventilation system

摘要

In an internal combustion engine having a turbocharger and a compressor, a discharge point of a tank ventilation system is provided in the intake passage of the internal combustion engine upstream from the turbocharger or the compressor. A Venturi nozzle is situated between the discharge point and a tank venting valve of the tank ventilation system. A defect or a detachment of the line between the Venturi nozzle and the discharge point is detectable with the aid of a change of an adaption value and/or of a correction factor in a control unit of the internal combustion engine or in a computer.

主权项

1. A method for diagnosing a tank ventilation system of an internal combustion engine which includes one of a turbocharger or a compressor, a discharge point of the tank ventilation system being situated in an intake passage of the internal combustion engine upstream from the one of the turbocharger or the compressor, and a Venturi nozzle being situated between the discharge point and a tank venting valve of the tank ventilation system, the method comprising:
detecting at least one of a defect and a detachment of a connecting line between the Venturi nozzle and the discharge point with the aid of a change of at least one of an adaption value and a correction factor in one of a control unit of the internal combustion engine or a computer.