METHOD AND SYSTEM FOR CONTROL OF TEMPERATURE OF AN EXHAUST AFTERTREATMENT SYSTEM
The present invention provides a method and a system arranged for control of at least one temperature T exhaust for an exhaust treatment system in a vehicle. The system comprises a first determination unit, arranged for the determination of the at least one temperature T exhaust for the exhaust treatment system, and a simulation unit, arranged for the simulation of at least one future velocity profile v sim , based on information relating to the road section. The system also comprises a second determination unit, arranged for the determination, based on the at least one future velocity profile v sim of whether a simulated active brake process brake sim due to an over-speed for the vehicle will occur within the road section. The system also comprises a utilisation unit, arranged for the utilisation, if the at least one temperature T exhaust for the exhaust treatment system is below a minimum temperature threshold value T min , and if the simulated active brake process brake sim is simulated to occur within the road section, of at least one engine fitted auxiliary brake, which is fitted in connection with an exhaust stream from an engine in the vehicle. The use is initiated, according to the invention, before the vehicle reaches a position where over-speed occurs.