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1. (WO2018031440) METHOD OF EXTENDED THERMODYNAMIC TURBINE MAPPING VIA COMPRESSOR INLET THROTTLING

Pub. No.:    WO/2018/031440    International Application No.:    PCT/US2017/045682
Publication Date: Fri Feb 16 00:59:59 CET 2018 International Filing Date: Tue Aug 08 01:59:59 CEST 2017
IPC: F04D 27/00
Applicants: BORGWARNER INC.
Inventors: SCHWARZ, Jordan Bucklew
GRABOWSKA, David
Title: METHOD OF EXTENDED THERMODYNAMIC TURBINE MAPPING VIA COMPRESSOR INLET THROTTLING
Abstract:
A method for extending thermodynamic turbine mapping of a turbocharger (12) includes a turbine (14) and a compressor (16). The method includes the steps of providing a steady-state turbocharger gas test stand (10) configured to flow continuous gas to the turbocharger (12). The test stand (10) includes a throttle device (31) disposed upstream of an inlet of the compressor (16) of the turbocharger (12). The method also includes the steps of varying an area of the inlet with the throttle device (31) to change density of the continuously flowing gas at the inlet of the compressor (16) and establish a choked-flow condition for extending the thermodynamic turbine mapping of the turbocharger (12).