DEVICE FOR CONTROLLING THE OPERATING STATE OF A CATALYTIC CONVERTER OF AN EXHAUST LINE PERTAINING TO AN INTERNAL COMBUSTION ENGINE, AND ENGINE COMPRISING ONE SUCH DEVICE

摘要

The invention relates to a device for controlling the operating state of a catalytic converter (30,31) of an exhaust line pertaining to an internal combustion engine (10), said device comprising means for determining (25,26) the temperature upstream of the catalytic converter, means for adding fuel to the exhaust line of the engine at the moment at which the temperature of the exhaust gas upstream of the catalytic converter corresponds to the ignition temperature of a catalytic converter with a normal operation, and means for controlling the quantity of heat emitted by the reaction generated in the catalytic converter as a result of said addition of fuel. According to the invention, said addition means comprise a dedicated fuel supply system (20) arranged in the exhaust line of the engine upstream of the catalytic converter to be controlled.