Thermal encapsulation for a motor vehicle drive train

The invention relates to a thermal enclosure for a drive train (2, 4) of a motor vehicle, the antriebsstrangnah arranged a thermally effective insulation (5), an outer surface of the drive train (2, 4) surrounds at least some regions, wherein an air gap (5) facing between the drive train (2, 4) inside the insulation (5) and the outer surface of the drive train (2, 4) is provided. In the insulation (5) at least one inlet opening (7) and at least one outlet opening (8) is introduced, wherein the air gap (6) through the inlet opening (7) with air from a drive train (2, 4) facing away from the outside of the insulation ( 5) can flow against and the air through the outlet opening (8) of the air gap (6) is abstrombar.