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A Comparison of EGR correction factor models based on SI engine data
File | Description | Size | Format | |
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03-12-02-0015.pdf | Published version | 3.34 MB | Adobe PDF | View/Open |
Title: | A Comparison of EGR correction factor models based on SI engine data |
Authors: | Smith, JK Ruprecht, D Kountouriotis, A Aleiferis, P Richardson, D |
Item Type: | Journal Article |
Abstract: | The article compares the accuracy of different exhaust gas recirculation (EGR) correction factor models under engine conditions. The effect of EGR on the laminar burning velocity of a EURO VI E10 specification gasoline (10% Ethanol content by volume) has been back calculated from engine pressure trace data, using the Leeds University Spark Ignition Engine Data Analysis (LUSIEDA) reverse thermodynamic code. The engine pressure data ranges from 5% to 25% EGR (by mass) with the running conditions, such as spark advance and pressure at intake valve closure, changed to maintain a constant engine load of 0.79 MPa gross mean effective pressure (GMEP). Based on the experimental data, a correlation is suggested on how the laminar burning velocity reduces with increasing EGR mass fraction. This correlation, together with existing models, was then implemented into the quasi-dimensional Leeds University Spark Ignition Engine (LUSIE) predictive engine code and resulting predictions are compared against measurements. It was found that the new correlation is in good agreement with experimental data for a diluent range of 5%-25%, providing the best fit for both engine loads investigated, whereas existing models tend to overpredict the reduction of burning velocity due to EGR. |
Issue Date: | 27-Mar-2019 |
Date of Acceptance: | 3-Dec-2018 |
URI: | http://hdl.handle.net/10044/1/66960 |
DOI: | https://dx.doi.org/10.4271/03-12-02-0015 |
ISSN: | 1946-3944 |
Publisher: | SAE International |
Start Page: | 203 |
End Page: | 217 |
Journal / Book Title: | SAE International Journal of Engines |
Volume: | 12 |
Issue: | 2 |
Copyright Statement: | © 2019 University of Leeds; Published by SAE International. This Open Access article is published under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits distribution, and reproduction in any medium, provided that the original author(s) and the source are credited. |
Sponsor/Funder: | Jaguar Land Rover Limited |
Funder's Grant Number: | 4200083609 |
Keywords: | Science & Technology Technology Transportation Science & Technology Transportation EGR SI Engine Thermodynamic modelling Laminar burning velocity LAMINAR BURNING VELOCITIES EXHAUST-GAS RECIRCULATION ISOOCTANE COMBUSTION GASOLINE AIR EMISSIONS MIXTURES PRESSURE BUTANOL 0901 Aerospace Engineering 0902 Automotive Engineering 0913 Mechanical Engineering |
Publication Status: | Published |
Article Number: | 03-12-02-0015 |
Appears in Collections: | Mechanical Engineering Faculty of Engineering |