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Effect of Variable Geometry Turbine (VGT) on Diesel Engine and Vehicle System Transient Response
Technical Paper
2001-01-1247
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Event:
SAE 2001 World Congress
Language:
English
Abstract
Variable geometry turbines (VGT) are of particular interest to advanced diesel powertrains for future conventional trucks, since they can dramatically improve system transient response to sudden changes in speed and load, characteristic of automotive applications. VGT systems are also viewed as the key enabler for the application of the EGR system for reduction of heavy-duty diesel emissions. This paper applies an artificial neural network methodology to VGT modeling in order to enable representation of the VGT characteristics for any blade (nozzle) position. Following validation of the ANN model of the baseline, fixed geometry turbine, the VGT model is integrated with the diesel engine system. The latter is linked to the driveline and the vehicle dynamics module to form a complete, high-fidelity vehicle simulation. A virtual Class VI vehicle is tested during hard acceleration and over a complete highway driving cycle in order to evaluate the effect of VGT on engine-in-vehicle response and cycle parameters affecting fuel economy and emissions.
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Authors
Topic
Citation
Filipi, Z., Wang, Y., and Assanis, D., "Effect of Variable Geometry Turbine (VGT) on Diesel Engine and Vehicle System Transient Response," SAE Technical Paper 2001-01-1247, 2001, https://doi.org/10.4271/2001-01-1247.Also In
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