Patent attributes
A turbocharger with a variable nozzle has a turbine impeller, a compressor impeller, a shaft coupling the turbine impeller and the compressor impeller, a bearing housing rotatably supporting the shaft, and a turbine housing accommodating the turbine impeller. The turbocharger further includes a variable nozzle mechanism, provided in a compressor impeller side in a radial-direction outer side of the turbine impeller, for adjusting a flow rate of an exhaust gas directed to the turbine impeller. The bearing housing has a radially expanded portion that extends to a radial-direction outer side to be coupled to the turbine housing at a radial-direction outer side portion thereof such that the variable nozzle mechanism is accommodated between the turbine housing and the radially expanded portion. Between the variable nozzle mechanism and the radially expanded portion, a heat shield plate is provided for preventing a heat transmission between them.
