| 摘要 |
<p>A turbocharger (10) with a variable nozzle has a turbine impeller (2), a compressor impeller (4), a shaft (5) coupling the turbine impeller (2) and the compressor impeller (4), a bearing housing (6) rotatably supporting the shaft (5), and a turbine housing (7) accommodating the turbine impeller (2). The turbocharger further includes a variable nozzle mechanism (12), provided in a radial-direction outer side of the turbine impeller (2), for adjusting a flow rate of an exhaust gas directed to the turbine impeller (2). The bearing housing (6) has a radially expanded portion (6a) that extends to a radial-direction outer side to be coupled to the turbine housing (7) at a radial-direction outer side portion thereof such that the variable nozzle mechanism (12) is accommodated between the turbine housing (7) and the radially expanded portion (6a). Between the variable nozzle mechanism (12) and the radially expanded portion (6a), a heat shield plate (21) is provided for preventing a heat transmission between them.</p> |
