Patent ID: 9739166
Date: 2017-08-22
CPC Classifications: F01D,F05D

Claim:
1. A variable geometry turbine comprising: a turbine housing comprising a body constructed and arranged to accommodate a turbine wheel, an inlet passage upstream of the body and operatively connected to the body, an outlet passage downstream of the body and operatively connected to the body; a vane pack assembly in operative communication with the turbine inlet passage, wherein the vane pack assembly comprises an upper vane ring, a lower vane ring, and a plurality of vane components interposed between the upper vane ring and the lower vane ring; at least one internal by-pass passage extending through at least one of the lower vane ring or the turbine housing below the lower vane ring, wherein the at least one internal by-pass passage is in operative communication with the inlet passage and the outlet passage; and wherein a first end of the at least one vane component extends within the at least one internal by-pass passage and is constructed and arranged to act as a rotary valve to prevent or allow fluid through the at least one internal by-pass passage.