METHOD AND DEVICE FOR THE CONTROL OF THE OPERATING STATE OF A CATALYTIC CONVERTER OF THE EXHAUST LINE OF AN INTERNAL COMBUSTION ENGINE

摘要

The invention relates to a control device of the operating state of a catalytic converter 25 of the exhaust line of an internal combustion engine 10, including a means for the determination 36; 26, 34 of the temperature upstream and downstream of the converter 25, a means for injecting fuel in the exhaust line 22 of the engine 10, means for calibrating a temperature model on a measured operating temperature of the catalytic converter 25, and calculation means for the integral of the difference between the measured temperature and the modeled temperature downstream of the converter 25.