A promising alternative of the conventional camshaft in internal combustion engines is one that replaces the camshaft with electromagnetic actuators. This so-called camless system provides great opportunities for the automotive industry. To investigate the advantage of the system against the cam system firstly, we modelled the lift profiles of both systems with novel mathematical expressions. For the camless system we modelled an Electromagnetic Valve Actuating (EMVA) system that captures a plant transfer function and a PID controller with a set-point tracking scheme. Simulation result in MATLAB/Simulink of the theoretical camless lift profile was imported into Curve Fitting (CF) Toolbox of MATLAB and the novel mathematical model was realized. Experimentally measured data for the camless lift profile were then fitted with this model and a tuned experimental model was realized. While for the cam system, the mathematical model was developed directly from experimental data via Curve Fitting Toolbox of MATLAB. Secondly, we computed volumetric efficiencies of both systems using the novel mathematical lift profiles at different engine speeds. The camless system was observed to outperform the cam system.
| Published in | Engineering and Applied Sciences (Volume 2, Issue 5) |
| DOI | 10.11648/j.eas.20170205.12 |
| Page(s) | 89-98 |
| Creative Commons |
This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited. |
| Copyright |
Copyright © The Author(s), 2024. Published by Science Publishing Group |
Camless System (EMVA), Cam System, MATLAB/Simulink, Curve Fitting Toolbox
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APA Style
Aliyu Bhar Kisabo, Musa James Ibrahim, Opasina Ayodele Oluwafemi. (2017). Comparative Analysis Between Cam and Cam-less Valve Actuating for Automotive System. Engineering and Applied Sciences, 2(5), 89-98. https://doi.org/10.11648/j.eas.20170205.12
ACS Style
Aliyu Bhar Kisabo; Musa James Ibrahim; Opasina Ayodele Oluwafemi. Comparative Analysis Between Cam and Cam-less Valve Actuating for Automotive System. Eng. Appl. Sci. 2017, 2(5), 89-98. doi: 10.11648/j.eas.20170205.12
AMA Style
Aliyu Bhar Kisabo, Musa James Ibrahim, Opasina Ayodele Oluwafemi. Comparative Analysis Between Cam and Cam-less Valve Actuating for Automotive System. Eng Appl Sci. 2017;2(5):89-98. doi: 10.11648/j.eas.20170205.12
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Download@article{10.11648/j.eas.20170205.12,
author = {Aliyu Bhar Kisabo and Musa James Ibrahim and Opasina Ayodele Oluwafemi},
title = {Comparative Analysis Between Cam and Cam-less Valve Actuating for Automotive System},
journal = {Engineering and Applied Sciences},
volume = {2},
number = {5},
pages = {89-98},
doi = {10.11648/j.eas.20170205.12},
url = {https://doi.org/10.11648/j.eas.20170205.12},
eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.eas.20170205.12},
abstract = {A promising alternative of the conventional camshaft in internal combustion engines is one that replaces the camshaft with electromagnetic actuators. This so-called camless system provides great opportunities for the automotive industry. To investigate the advantage of the system against the cam system firstly, we modelled the lift profiles of both systems with novel mathematical expressions. For the camless system we modelled an Electromagnetic Valve Actuating (EMVA) system that captures a plant transfer function and a PID controller with a set-point tracking scheme. Simulation result in MATLAB/Simulink of the theoretical camless lift profile was imported into Curve Fitting (CF) Toolbox of MATLAB and the novel mathematical model was realized. Experimentally measured data for the camless lift profile were then fitted with this model and a tuned experimental model was realized. While for the cam system, the mathematical model was developed directly from experimental data via Curve Fitting Toolbox of MATLAB. Secondly, we computed volumetric efficiencies of both systems using the novel mathematical lift profiles at different engine speeds. The camless system was observed to outperform the cam system.},
year = {2017}
}
TY - JOUR T1 - Comparative Analysis Between Cam and Cam-less Valve Actuating for Automotive System AU - Aliyu Bhar Kisabo AU - Musa James Ibrahim AU - Opasina Ayodele Oluwafemi Y1 - 2017/11/28 PY - 2017 N1 - https://doi.org/10.11648/j.eas.20170205.12 DO - 10.11648/j.eas.20170205.12 T2 - Engineering and Applied Sciences JF - Engineering and Applied Sciences JO - Engineering and Applied Sciences SP - 89 EP - 98 PB - Science Publishing Group SN - 2575-1468 UR - https://doi.org/10.11648/j.eas.20170205.12 AB - A promising alternative of the conventional camshaft in internal combustion engines is one that replaces the camshaft with electromagnetic actuators. This so-called camless system provides great opportunities for the automotive industry. To investigate the advantage of the system against the cam system firstly, we modelled the lift profiles of both systems with novel mathematical expressions. For the camless system we modelled an Electromagnetic Valve Actuating (EMVA) system that captures a plant transfer function and a PID controller with a set-point tracking scheme. Simulation result in MATLAB/Simulink of the theoretical camless lift profile was imported into Curve Fitting (CF) Toolbox of MATLAB and the novel mathematical model was realized. Experimentally measured data for the camless lift profile were then fitted with this model and a tuned experimental model was realized. While for the cam system, the mathematical model was developed directly from experimental data via Curve Fitting Toolbox of MATLAB. Secondly, we computed volumetric efficiencies of both systems using the novel mathematical lift profiles at different engine speeds. The camless system was observed to outperform the cam system. VL - 2 IS - 5 ER -
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