Method and device for managing the temperature of an exhaust gas aftertreatment system of a pollutant-discharging motor vehicle

A control unit for actuating a heat source for a component of an exhaust system, the control unit configured to execute a method comprising:

• determining a current vehicle mass of the motor vehicle;
• providing information items relating to a future traveling route of a motor vehicle;
• determining a power profile of a power of the drive within a predefined future time segment, the power profile based on the vehicle mass;
• ascertaining a chronological sequence of a multiplicity of temperature values in the component within the time segment, wherein the ascertainment of the chronological sequence is based on the provided information items;
• determining a point in time within the time segment on the basis of the ascertained chronological sequence, wherein a temperature value of the multiplicity of temperature values which is assigned to the point in time is intended to satisfy a predefined criterion;
• and
• actuating the heat source before the point in time such that the temperature value satisfies the specified criterion at the point in time.

A motor vehicle having a control unit for actuating a heat source for a component of an exhaust system, the control unit configured to execute a method comprising:

• determining a current vehicle mass of the motor vehicle;
• providing information items relating to a future traveling route of the motor vehicle;
• determining a power profile of a power of the drive within a predefined future time segment, the power profile based on the vehicle mass;
• ascertaining a chronological sequence of a multiplicity of temperature values in the component within the time segment, wherein the ascertainment of the chronological sequence is based on the provided information items;
• determining a point in time within the time segment on the basis of the ascertained chronological sequence, wherein a temperature value of the multiplicity of temperature values which is assigned to the point in time is intended to satisfy a predefined criterion;
• and
• actuating the heat source before the point in time such that the temperature value satisfies the specified criterion at the point in time.