Patent ID: 8545173
Filing Date: 2013-10-01
Classification: F01D,F05D,Y10T

Abstract:
1. A process for calibrating a variable-nozzle assembly for a turbine of a turbocharger prior to installation of the variable-nozzle assembly in the turbocharger, comprising the steps of: installing the variable-nozzle assembly in a calibration fixture having internal flowpath contours configured to substantially replicate corresponding internal flowpath contours of a turbocharger into which the variable-nozzle assembly is to be installed, the calibration fixture defining a generally annular chamber in fluid communication with a flow path defined in the variable-nozzle assembly, and a fluid supply passage extending from an outer surface of the calibration fixture into the annular chamber; connecting a fluid source to the fluid supply passage of the fixture and causing a flow of fluid from the fluid source to the fluid supply passage, the fluid then flowing through the flow path of the variable-nozzle assembly; and adjusting a setting angle of vanes of the variable-nozzle assembly while the fluid is flowing through the variable-nozzle assembly to cause the fluid to have a flow rate equal to a predetermined flow rate.