Patent ID: 7726117
Filing Date: 2010-06-01
Classification: F02D

Abstract:
1. A method for controlling an internal combustion engine having a motor control system, comprising: adjusting an air-fuel mixture of the engine according to a temperature model of the control system to influence an exhaust gas temperature; determining a preset temperature for a component in an exhaust gas manifold of the engine, the preset temperature representing the temperature that would be achieved if the current operating condition and a current driving condition were maintained for a long time; regulating the exhaust gas temperature by adjusting the air-fuel mixture as a function of the preset temperature and a maximum permissible temperature value of the component after a current temperature value of the component has exceeded a switching-on threshold value for the purpose of component protection; and adjusting the preset temperature based on the air-fuel mixture adjustment; and further regulating the exhaust gas temperature by adjusting the air-fuel mixture as a function of the adjusted preset temperature and the maximum permissible temperature value of the component.