| 摘要 |
The invention relates to an exhaust-gas turbo charger (1) comprising a turbine housing (2) which has a turbine housing inlet (8) and a turbine housing outlet (9), and which has a wastegate duct (10) between the turbine housing inlet (8) and the turbine housing outlet (9), and a shut-off element (13) for opening and closing the wastegate duct (10), wherein the shut-off element (13) comprises a sleeve (14), which is inserted into the turbine housing (2), and a piston (22), which is guided in the sleeve (14) so as to be movable along a longitudinal axis (L), wherein the sleeve (14) has apertures (15, 16) at which the wastegate duct (5) opens out into the interior of the sleeve (14). |
