Functionally testing variable turbine geometry exhaust gas turbocharger involves measuring main parameter determining motor air supply, auxiliary parameter for fault identification

摘要

The method involves detecting actual values of parameters influencing the functional efficiency of the turbocharger, including main parameters determining whether there is a fault and auxiliary parameters describing a component of the turbocharger for identifying component faults. In a first step for fault identification a main parameter determining the motor air supply is measured; in a second step at least one auxiliary parameter for fault identification is measured and a fault signal is generated if the actual and desired auxiliary value difference is excessive.