Heating Device for an Exhaust System of an Internal Combustion Engine

1) A heating device (6) for an exhaust system (1) of an internal combustion engine (2);

• the heating device (6) comprises:
• a tubular body (12), where a combustion chamber (7) is obtained on the inside;
• a fuel injector (9), which is mounted through a base wall (14) of the tubular body (12) so as to inject fuel into the combustion chamber (7);
• at least one inlet opening (18), which can be connected to a fan (8) so as to receive an air flow, which is directed to the combustion chamber (7) and gets mixed with the fuel;
• a feeding channel (21), which receives air from the inlet opening (18), surrounds an end portion of the fuel injector (9) and ends with a nozzle (22), which is arranged around an injection point of the fuel injector (9);
• and
• a spark plug (10), which is mounted through a side wall (16) of the tubular body (12) so as to trigger the combustion of a mixture of air and fuel;
• wherein the fuel injector (9) is configured to spray at least 80% of the fuel against an inner surface (26) of the feeding channel (21).