| 摘要 |
The present invention relates to a turbocharger equipped with a variable nozzle device, in which the retainer ring, insert and turbine housing are mechanically and thermally isolated. Consequently, there is no danger of deterioration of the operating efficiency of the variable nozzle device, sealing between the retainer ring and the nozzle is also improved, and productivity is increased because the manufacturing and assembly of the variable nozzle device is simpler. In addition, since the design is simple, there is no need to manufacture the various parts of the turbocharger to a fine tolerance and manufacturing costs are thereby reduced. The invention comprises a bearing housing between the compressor housing and the turbine housing, and an insert which is built between said bearing housing and said turbine housing. Said insert is comprised of a tubular component attached to the inside of the turbine housing outlet and a nozzle which extends radially outwards from the end of said tubular component. Said nozzle is equipped with a variable nozzle device in which a plurality of vanes are axially disposed at intervals between said retainer ring and the nozzle. |
