Siemens Aktiengesellschaft

Willibald Schurz

Maximilian Engl

Bertrand Lemire

Johann Frohlich

A setpoint torque is determined from a torque factor, a maximum torque and a minimum torque. The torque factor is derived from a pedal value and a rotational speed. The maximum and minimum torques are determined as a function of the rotational speed, a loss torque and engine performance parameters. The loss torque is determined as a function of the rotational speed and the performance parameters.

Method for controlling an internal combustion engine

A method for testing the functional capability of a catalytic converter of an internal combustion engine uses an exhaust-gas probe having a measuring electrode for measuring the resistance of a metal oxide layer having low catalytic activity. The resistance of the metal oxide layer is dependent on the oxygen partial pressure in the exhaust gas, for a predetermined air factor. The conversion rate of a catalytic converter has an effect on the oxygen partial pressure in the exhaust gas downstream of the catalytic converter, so that the resistance of the metal oxide layer depends on the conversion efficiency of the catalytic converter. It is thus possible to test the functional capability of the catalytic converter with the simply constructed exhaust-gas probe using a simple resistance measurement.

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Aufhausen, Germany

Willibald Schurz