| 摘要 |
<p>A turbine housing (3), which is applied to a turbine (2) incorporated in a turbocharger (1), and which is equipped with a main body (10) the interior of which is provided with a wheel-housing chamber (13) that houses a turbine wheel (4), and with an exhaust passage (15) one end of which communicates with an outlet of the wheel-housing chamber (13) and the other end of which is provided with an exhaust port (15a), wherein an upstream-side inner pipe (20), which is arranged in the wheel-housing chamber (13) and has a shroud part (20a) that extends along the edges of the turbine blades (5) of the turbine wheel (4), and a downstream-side inner pipe (21), which is arranged in the exhaust passage (15) so as to be located downstream from the upstream-side inner pipe (20), are provided in the interior of the main body (10), and the thickness (t2) of the downstream-side inner pipe (21) is less than the thickness (t1) of the upstream-side inner pipe (20).</p> |
