Heating arrangement, an exhaust treatment system comprising the heating arrangement, a vehicle comprising the exhaust treatment system, and a method for a heating arrangement

A method for heating an evaporator device configured downstream of a turbine rotor of a turbo device;

• wherein
• the turbo device is configured at a combustion engine to receive and interact with exhaust gases output by the combustion engine, and is connected to a downstream component of an exhaust treatment system by an exhaust conduit;
• and
• the evaporator device has an annular shape and is configured radially inside of a turbo section of the exhaust conduit, such that
• a first portion of the exhaust gases flows through the evaporator device and is mixed with a reductant being injected by a reductant dosing device configured radially inside the evaporator device and
• a second portion of the exhaust gases flows through a passage formed between an outer wall of the evaporator device and an inner wall of the exhaust conduit;
• the method comprising one or more steps in the group of:
• increasing one or more of a temperature Teva of a wall of the evaporator device a temperature T2nd of the second portion of the exhaust gases, and a temperature Ttot of a mixture of the first portion and the second portion downstream of the evaporator device by utilization of an electric heating device being configured to convert electric energy Eel to thermal energy Eth and to provide the thermal energy Eth to the wall of the evaporator device;
• and/or
• increasing one or more of a temperature Teva of the a wall of the evaporator device, a temperature T2nd of the second portion of the exhaust gases, and a temperature Ttot of a mixture of the first portion and the second portion downstream of the evaporator device by utilization of an oxidation catalyst configured at one or more parts of the outer wall of the evaporator device, and a hydrocarbon dosing device configured in the passage to inject hydrocarbons into the second portion of the exhaust gases, such that the hydrocarbons are oxidized at the oxidation catalyst in the passage.

A computer program product stored on a non-transitory computer-readable medium, said computer program product for heating an evaporator device configured downstream of a turbine rotor of a turbo device, wherein the turbo device is configured at a combustion engine to receive and interact with exhaust gases output by the combustion engine, and is connected to a downstream component of an exhaust treatment system by an exhaust conduit;

• and the evaporator device has an annular shape and is configured radially inside of a turbo section of the exhaust conduit, such that a first portion of the exhaust gases flows through the evaporator device and is mixed with a reductant being injected by a reductant dosing device configured radially inside the evaporator device;
• and a second portion of the exhaust gases flows through a passage formed between an outer wall of the evaporator device and an inner wall of the exhaust conduit, wherein said computer program product comprising computer instructions to cause a computer to perform the one or more of the following operations:
• increasing one or more of a temperature Teva of a wall of the evaporator device, a temperature T2nd of the second portion of the exhaust gases, and a temperature Ttot of a mixture of the first portion and the second portion downstream of the evaporator device by utilization of an electric heating device being configured to convert electric energy Eel to thermal energy Eth and to provide the thermal energy Eth to the wall of the evaporator device;
• and/or
• increasing one or more of a temperature Teva of the a wall of the evaporator device, a temperature T2nd of the second portion of the exhaust gases, and a temperature Ttot of a mixture of the first portion and the second portion downstream of the evaporator device by utilization of an oxidation catalyst configured at one or more parts of the outer wall of the evaporator device, and a hydrocarbon dosing device configured in the passage to inject hydrocarbons into the second portion of the exhaust gases, such that the hydrocarbons are oxidized at the oxidation catalyst in the passage.