Scania Cv Ab

Elvedin Ramic

Fredrik Roos

Martin Evaldsson

Robin Rockström

A method for limitation of torque build-up of an engine () in a motor vehicle (), including the steps of continuously identifying (s) a pattern pertaining to a maximum permissible torque (Tqmax); responding to torque demand (s) by guiding torque build-up towards desired torque (Tqreq); responding to torque demand by continuously determining (s) a difference (Tqdiff; Tqdiffnorm) between maximum permissible torque (Tqmax) and a prevailing torque (Tq); and controlling the torque build-up (s) so that the resulting torque (Tq) is a function of the continuously determined difference (Tqdiff; Tqdiffnorm). Also a computer program product containing program code (P) for a computer () for implementing a method according to the invention. Also a device that performs the method and a motor vehicle () equipped with the device are disclosed.

Method and device for limiting the torque build-up of an engine

The present invention provides a method and system arranged for control of at least one temperature Tfor an exhaust treatment system in a vehicle. The system comprises a first determination unit arranged for the determination of the at least one temperature Tfor the exhaust treatment system. The system also comprises a second determination unit arranged for the determination of an order of priority for the use of brakes in the vehicle. These brakes comprise at least the service brakes and the auxiliary brakes, the auxiliary brakes in turn comprising at least one engine fitted auxiliary brake, which is fitted in connection with an exhaust stream through the exhaust treatment system. The order of priority is determined based on the at least one temperature T. The system also comprises an utilization unit arranged for the use of the determined order of priority at braking of the vehicle.

Method and system for control of temperature of an exhaust aftertreatment system

A system for control of temperature for a vehicle exhaust treatment system comprising a first determination unit arranged for determination of a temperature for the exhaust treatment system, and a simulation unit arranged for simulation of a future velocity profile, based on information relating to a road section. A second determination unit arranged for determination, based on a future velocity profile, of whether a simulated active brake process due to an over-speed for the vehicle will occur within the road section. A utilization unit is arranged for utilization, if the at least one temperature for the exhaust treatment system is below a minimum temperature threshold value, and if the simulated active brake process is simulated to occur within the road section, of an engine fitted auxiliary brake, which is fitted in connection with an exhaust stream from an engine in the vehicle, where the utilization is initiated before over-speed occurs.

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Åkers Styckebruk, Sweden

Elvedin Ramic