Exhaust gas turbocharger

An exhaust gas turbocharger comprising:

• a turbine unit that is driven by exhaust gas guided thereto from an internal combustion engine;
• a compressor unit that is driven by the turbine unit to feed fresh air to an internal combustion engine;
• and
• a generator having a rotation shaft of the generator that is linked to rotation shafts of the turbine unit and the compressor unit,
• wherein a generator housing that accommodates, in the interior thereof, a hollow-cylindrical liner that forms the generator, in which a pathway for allowing a cooling medium that cools the generator to flow is formed in the interior thereof, and a stator that forms the generator, which is disposed on a radially inner side of the liner, can be divided into two parts at a plane including the rotation axis of the rotation shaft of the generator;
• and
• individual joints formed inside the generator housing between the pathway and a first hole for supplying the cooling medium to the pathway and also a second hole for exhausting the cooling medium from the pathway are provided with ring-like members that are provided with front surfaces that face the liner and back surfaces that face the generator housing and that have a through-hole that communicates between the first hole and the pathway or a through-hole that communicates between the second hole and the pathway at center portions thereof.