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Comparative Analysis Between Cam and Cam-less Valve Actuating for Automotive System

Received: 15 March 2017     Accepted: 17 April 2017     Published: 28 November 2017
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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.

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), 2017. Published by Science Publishing Group

Keywords

Camless System (EMVA), Cam System, MATLAB/Simulink, Curve Fitting Toolbox

References
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[3] T. G. Leone et al (1996). Comparison of Variable Camshaft Timing Strategies at Part Load. SAE Technical Paper, no. 960584.
[4] R. Flierl et al (2006). Improvements to a four cylinder gasoline engine through the fully variable valve lift and timing system univalve. SAE Technical Paper, no. 01-0223.
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[18] C. Puchalsy et al (2015). Modelica Application for Camless Engine Valve Development. 2nd Internatioanl Modelica Conference, Proceedings, pp 77-86.
[19] K. J. Astrom, Tore Hagglund (2006). Advanced PID Control ISBN 1-55617-942-1
[20] The MathWorks, Inc. (2001-2016). Curve Fitting ToolboxTM User’s Guide R2016a.
[21] Parlikar et al (2005). Design and Experimental Implementation of an Electromagnetic Engine Valve Drive. IEEE/ASME Transactions on Mechatronics 10, no. 5: 482–494. http://dx.doi.org/10.1109/TMECH.2005.856221.
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Cite This Article
  • 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

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    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

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    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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  • @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}
    }
    

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  • 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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Author Information
  • Centre for Space Transport & Propulsion (CSTP) Epe, Lagos, Nigeria

  • Centre for Space Transport & Propulsion (CSTP) Epe, Lagos, Nigeria

  • Centre for Space Transport & Propulsion (CSTP) Epe, Lagos, Nigeria

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