Patent ID: 7661262
Filing Date: 2010-02-16
Classification: F01N,F02D,Y02T

Abstract:
1. A method for monitoring a heating up of an exhaust gas catalytic converter of an internal combustion engine, comprising: in-taking air into the internal combustion engine via an intake duct; ejecting exhaust gas resulting from the combustion of an air/fuel mixture in a cylinder into an exhaust gas catalytic converter located in an exhaust gas duct; generating input signals for the control of a plurality of actuators of the internal combustion engine by a control function based on a torsional moment and by a dynamic charging model of the intake duct and depending on measurement values that are determined from a plurality of sensors; determining a measurement that characterizes the difference of a desired air mass flow into the cylinder from an actual air mass flow into the cylinder; integrating the measurement during the heating up of the exhaust gas catalytic converter; and identifying an improper heating up of the exhaust gas catalytic converter if the integrated measurement exceeds a specified threshold value.