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Methodology to Standardize and Improve the Calibration Process of a 1D Model of a GTDI Engine
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 14, 2020 by SAE International in United States
This content contains downloadable datasetsAnnotation ability available
The present paper aims at developing a novel methodology to create a one-dimensional simulation model for an automotive turbocharged gasoline engine. The gas-path modeling of the engine, which includes a variable nozzle turbine (VNT) and variable valve timing (VVT) strategies, is described in detail. The model calibration procedure is mainly distinguished by isolating the different engine parts, decoupling the turbocharger, using PI controls to find fitting parameters and checking and validating mean and crank-angle resolved variables. To handle model limitations, it requires experimental data and a previous combustion analysis of some steady operating points. The methodology is completed with the determination of fitting correlations to estimate heat losses and pressure drops in engine systems. It also includes the training of an Artificial Neural Network (ANN) to predict the combustion process and the integration into the model and final validation. This validation is performed not only in steady state engine conditions but also in transient operation with EGR.
CitationSerrano, J., Climent, H., Navarro, R., and González-Domínguez, D., "Methodology to Standardize and Improve the Calibration Process of a 1D Model of a GTDI Engine," SAE Technical Paper 2020-01-1008, 2020, https://doi.org/10.4271/2020-01-1008.
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