Please use this identifier to cite or link to this item:
http://hdl.handle.net/11375/23819
Title: | ONE-DIMENSIONAL HIGH-FIDELITY AND REDUCED-ORDER MODELS FOR THREE-WAY CATALYTIC CONVERTER |
Authors: | Li, Tongrui |
Advisor: | Yan, Fengjun |
Department: | Mechanical Engineering |
Keywords: | TWC;High-fidelity model;Reduced-order model;Thermal management system;Chemical kinetic |
Publication Date: | 2018 |
Abstract: | To improve the performance of the three-way catalytic (TWC) converter, advanced control strategies and on-board diagnostics (OBD) systems are needed. Both rely on a relatively accurate but computationally efficient TWC converter model. This thesis aims to develop a control-oriented model that can be employed to develop the control strategies and OBD systems of the TWC converter. The thesis consists of two parts, i.e., the high-fidelity model development and the model reduction. Firstly, a high-fidelity model is built using the energy and mass conservation principles. In this model, a constant inlet simulation is used to validate the warming-up characteristics, and a driving cycle simulation is used to calibrate the reaction rate parameters. The results of the simulation show that the high-fidelity model has adequate accuracy. Secondly, a reduced-order model is developed based on phase and reaction simplifications of the high-fidelity model. The aim of the development of the reduced-order model is to propose a computationally efficient model for further development of control strategies and state estimators for OBD systems. The accuracy of the reduced-order model is then validated by means of simulations. |
URI: | http://hdl.handle.net/11375/23819 |
Appears in Collections: | Open Access Dissertations and Theses |
Files in This Item:
File | Description | Size | Format | |
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Li_Tongrui_201805_MASc.pdf | 8.09 MB | Adobe PDF | View/Open |
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