Method for diagnosing an actuator for a boost pressure system of an internal combustion engine

摘要

A method for diagnosing an actuator for a boost pressure system of an internal combustion engine, in which the actuator is controlled using a triggering signal, and a state variable of the boost pressure system which is at least an indirect function of the triggering signal is detected. The triggering signal is periodic, and a curve of the values of the state variable is analyzed with regard to at least one periodic characteristic.

主权项

1. A method for diagnosing an actuator for a boost pressure system of an internal combustion engine, comprising:
controlling, by a control unit, the actuator using a triggering signal, the triggering signal being periodic at a selected frequency; detecting, by a sensor, a state variable of the boost pressure system which is at least an indirect function of the triggering signal, the state variable being periodic at the selected frequency; and analyzing, by the control unit, a curve of values of the state variable with regard to at least one periodic characteristic to determine whether a rate of response of the actuator to the triggering signal has at least a predetermined threshold value.