Patent ID: 8961122
Filing Date: 2015-02-24
Classification: F01D,F02C,F05D

Abstract:
1. A turbine housing which is applied to a turbine incorporated in a turbocharger, the turbine housing including a main body, in which a wheel housing chamber housing a turbine wheel and an exhaust passage are provided, the exhaust passage having one end communicating with an outlet of the wheel housing chamber and the other end providing an exhaust port, and gas passing through the wheel housing chamber being discharged from the exhaust port to outside through the exhaust passage, wherein the main body is provided with an upstream-side inner pipe and a downstream-side inner pipe therein, the upstream-side inner pipe having a shroud portion which is located in the wheel housing chamber and extends along edges of turbine blades of the turbine wheel, the downstream-side inner pipe being arranged in the exhaust passage so as to be located on a downstream side with respect to a direction of gas flow to the upstream-side inner pipe, the downstream-side inner pipe being separated from the main body so that a clearance is provided between the downstream-side inner pipe and the main body, and also separated from the upstream-side inner pipe, and a thickness of the downstream-side inner pipe is thinner than a thickness of the upstream-side inner pipe.