In turbocharging automotive Diesel engines, an effective method to extend the turbine flow range and control the boost level is the use of a variable geometry turbine (VGT): This technique can be very helpful to improve the transient response of the engine and reduce exhaust emissions. In order to compare the performance of variable geometry and conventional waste-gated turbines, a thorough experimental investigation was developed on a test facility at the Department of Energetic Engineering of the University of Genoa (DINE). Two VG turbines were considered: a variable area turbine (VAT) and a variable nozzle turbine (VNT). The VG turbines were compared with a fixed geometry waste-gated turbine in both steady and unsteady flow conditions, referring to mass flow and efficiency characteristics.
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July 1992
Research Papers
Variable Geometry and Waste-Gated Automotive Turbochargers: Measurements and Comparison of Turbine Performance
M. Capobianco,
M. Capobianco
Dipartment of Energetic Engineering, University of Genoa, Genoa, Italy
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A. Gambarotta
A. Gambarotta
Dipartment of Energetic Engineering, University of Genoa, Genoa, Italy
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M. Capobianco
Dipartment of Energetic Engineering, University of Genoa, Genoa, Italy
A. Gambarotta
Dipartment of Energetic Engineering, University of Genoa, Genoa, Italy
J. Eng. Gas Turbines Power. Jul 1992, 114(3): 553-560 (8 pages)
Published Online: July 1, 1992
Article history
Received:
September 30, 1991
Online:
April 24, 2008
Citation
Capobianco, M., and Gambarotta, A. (July 1, 1992). "Variable Geometry and Waste-Gated Automotive Turbochargers: Measurements and Comparison of Turbine Performance." ASME. J. Eng. Gas Turbines Power. July 1992; 114(3): 553–560. https://doi.org/10.1115/1.2906624
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