| 摘要 |
A turbocharger includes a backplate separate from both the center housing and the turbine housing which is clamped between the latter by tie bolts extending across the center housing so that the tensile/shear forces transmitted through the head of the tie bolt are taken on the relatively cool compressor side of the center housing. The turbine backplate, since it is a separate member, may be made from a material having a relatively low thermal conductivity, thereby serving as a heat barrier between the turbine section and the center housing of the turbocharger. The separate backplate permits manufacture of the center housing by an inexpensive die casting process. An oil splash shield cooperates with the turbine backplate to prevent oil from splashed against the warm parts of the assembly, and also cooperates with the turbine backplate to define a chamber therebetween that also further increases thermal insulation of the center housing from the relatively warm turbine housing. |
