Minimization of Fuel Consumption in Four Stroke Six Cylinder Engines Using Idle Speed Control

Chinonso Francis Nkeoma Ubbaonu; Damian Obioma Dike; Raymond O. Opara; Chiedozie Francis Paulinus-Nwamuo; Ernest Ezugwu

doi:doi:10.11648/j.ajset.20251004.12

Research Article |

Minimization of Fuel Consumption in Four Stroke Six Cylinder Engines Using Idle Speed Control

Chinonso Francis Nkeoma Ubbaonu^*, Damian Obioma Dike, Raymond O. Opara, Chiedozie Francis Paulinus-Nwamuo, Ernest Ezugwu

Published in American Journal of Science, Engineering and Technology (Volume 10, Issue 4)

Received: 10 April 2017 Accepted: 14 June 2017 Published: 14 October 2025

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Abstract

In a distressed economy with increasing cost of fuel, it is necessary to achieve control of automobile engine over transient behavior and meet performance objectives within the planned life of the vehicle. In this paper the objective is to design a model predictive controller (MPC) that will minimize fuel consumption in a four stroke cylinder engine using idle speed control. Engine speed is most often affected by unexpected disturbances, and the higher the engine speed at idle the higher the consumption of fuel. Non linear dynamic equations of an idle speed engine were obtained and later transformed to equivalent linear equation by linearization method. The designed MPC was integrated with a linearized equation of the plant. The MPC approach was used to forecast and control the four stroke six cylinder engine model in the presence of unexpected disturbance to achieve the desired objective. Simulations were performed in Matlab/Simulink and the results obtained showed that at different instances when disturbances entered the system, with MPC controller in the loop, the instability introduced by the disturbance was eliminated and the referenced idle speed tracked. There by maintaining the engine idle speed at 600 RPM.

Published in	American Journal of Science, Engineering and Technology (Volume 10, Issue 4)
DOI	10.11648/j.ajset.20251004.12
Page(s)	175-184
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), 2025. Published by Science Publishing Group

Keywords

Cost Minimization, Engine Model, Idle Speed, Model Predictive Control

References

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APA Style

Ubbaonu, C. F. N., Dike, D. O., Opara, R. O., Paulinus-Nwamuo, C. F., Ezugwu, E. (2025). Minimization of Fuel Consumption in Four Stroke Six Cylinder Engines Using Idle Speed Control. American Journal of Science, Engineering and Technology, 10(4), 175-184. https://doi.org/10.11648/j.ajset.20251004.12

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ACS Style

Ubbaonu, C. F. N.; Dike, D. O.; Opara, R. O.; Paulinus-Nwamuo, C. F.; Ezugwu, E. Minimization of Fuel Consumption in Four Stroke Six Cylinder Engines Using Idle Speed Control. Am. J. Sci. Eng. Technol. 2025, 10(4), 175-184. doi: 10.11648/j.ajset.20251004.12

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AMA Style

Ubbaonu CFN, Dike DO, Opara RO, Paulinus-Nwamuo CF, Ezugwu E. Minimization of Fuel Consumption in Four Stroke Six Cylinder Engines Using Idle Speed Control. Am J Sci Eng Technol. 2025;10(4):175-184. doi: 10.11648/j.ajset.20251004.12

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@article{10.11648/j.ajset.20251004.12,
  author = {Chinonso Francis Nkeoma Ubbaonu and Damian Obioma Dike and Raymond O. Opara and Chiedozie Francis Paulinus-Nwamuo and Ernest Ezugwu},
  title = {Minimization of Fuel Consumption in Four Stroke Six Cylinder Engines Using Idle Speed Control
},
  journal = {American Journal of Science, Engineering and Technology},
  volume = {10},
  number = {4},
  pages = {175-184},
  doi = {10.11648/j.ajset.20251004.12},
  url = {https://doi.org/10.11648/j.ajset.20251004.12},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajset.20251004.12},
  abstract = {In a distressed economy with increasing cost of fuel, it is necessary to achieve control of automobile engine over transient behavior and meet performance objectives within the planned life of the vehicle. In this paper the objective is to design a model predictive controller (MPC) that will minimize fuel consumption in a four stroke cylinder engine using idle speed control. Engine speed is most often affected by unexpected disturbances, and the higher the engine speed at idle the higher the consumption of fuel. Non linear dynamic equations of an idle speed engine were obtained and later transformed to equivalent linear equation by linearization method. The designed MPC was integrated with a linearized equation of the plant. The MPC approach was used to forecast and control the four stroke six cylinder engine model in the presence of unexpected disturbance to achieve the desired objective. Simulations were performed in Matlab/Simulink and the results obtained showed that at different instances when disturbances entered the system, with MPC controller in the loop, the instability introduced by the disturbance was eliminated and the referenced idle speed tracked. There by maintaining the engine idle speed at 600 RPM.},
 year = {2025}
}

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TY  - JOUR
T1  - Minimization of Fuel Consumption in Four Stroke Six Cylinder Engines Using Idle Speed Control

AU  - Chinonso Francis Nkeoma Ubbaonu
AU  - Damian Obioma Dike
AU  - Raymond O. Opara
AU  - Chiedozie Francis Paulinus-Nwamuo
AU  - Ernest Ezugwu
Y1  - 2025/10/14
PY  - 2025
N1  - https://doi.org/10.11648/j.ajset.20251004.12
DO  - 10.11648/j.ajset.20251004.12
T2  - American Journal of Science, Engineering and Technology
JF  - American Journal of Science, Engineering and Technology
JO  - American Journal of Science, Engineering and Technology
SP  - 175
EP  - 184
PB  - Science Publishing Group
SN  - 2578-8353
UR  - https://doi.org/10.11648/j.ajset.20251004.12
AB  - In a distressed economy with increasing cost of fuel, it is necessary to achieve control of automobile engine over transient behavior and meet performance objectives within the planned life of the vehicle. In this paper the objective is to design a model predictive controller (MPC) that will minimize fuel consumption in a four stroke cylinder engine using idle speed control. Engine speed is most often affected by unexpected disturbances, and the higher the engine speed at idle the higher the consumption of fuel. Non linear dynamic equations of an idle speed engine were obtained and later transformed to equivalent linear equation by linearization method. The designed MPC was integrated with a linearized equation of the plant. The MPC approach was used to forecast and control the four stroke six cylinder engine model in the presence of unexpected disturbance to achieve the desired objective. Simulations were performed in Matlab/Simulink and the results obtained showed that at different instances when disturbances entered the system, with MPC controller in the loop, the instability introduced by the disturbance was eliminated and the referenced idle speed tracked. There by maintaining the engine idle speed at 600 RPM.
VL  - 10
IS  - 4
ER  -

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Author Information

Chinonso Francis Nkeoma Ubbaonu

Electrical and Electronics Engineering Department, Federal University of Technology Owerri, Owerri, Nigeria

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Damian Obioma Dike

Electrical and Electronics Engineering Department, Federal University of Technology Owerri, Owerri, Nigeria

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Raymond O. Opara

Electrical and Electronics Engineering Department, Federal University of Technology Owerri, Owerri, Nigeria

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Chiedozie Francis Paulinus-Nwamuo

Electrical and Electronics Engineering Department, Federal University of Technology Owerri, Owerri, Nigeria

Contact Email
Ernest Ezugwu

Electrical and Electronics Engineering Department, Federal University of Technology Owerri, Owerri, Nigeria

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Plain Text BibTeX RIS

APA Style

Ubbaonu, C. F. N., Dike, D. O., Opara, R. O., Paulinus-Nwamuo, C. F., Ezugwu, E. (2025). Minimization of Fuel Consumption in Four Stroke Six Cylinder Engines Using Idle Speed Control. American Journal of Science, Engineering and Technology, 10(4), 175-184. https://doi.org/10.11648/j.ajset.20251004.12

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ACS Style

Ubbaonu, C. F. N.; Dike, D. O.; Opara, R. O.; Paulinus-Nwamuo, C. F.; Ezugwu, E. Minimization of Fuel Consumption in Four Stroke Six Cylinder Engines Using Idle Speed Control. Am. J. Sci. Eng. Technol. 2025, 10(4), 175-184. doi: 10.11648/j.ajset.20251004.12

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AMA Style

Ubbaonu CFN, Dike DO, Opara RO, Paulinus-Nwamuo CF, Ezugwu E. Minimization of Fuel Consumption in Four Stroke Six Cylinder Engines Using Idle Speed Control. Am J Sci Eng Technol. 2025;10(4):175-184. doi: 10.11648/j.ajset.20251004.12

Copy | Download

@article{10.11648/j.ajset.20251004.12,
  author = {Chinonso Francis Nkeoma Ubbaonu and Damian Obioma Dike and Raymond O. Opara and Chiedozie Francis Paulinus-Nwamuo and Ernest Ezugwu},
  title = {Minimization of Fuel Consumption in Four Stroke Six Cylinder Engines Using Idle Speed Control
},
  journal = {American Journal of Science, Engineering and Technology},
  volume = {10},
  number = {4},
  pages = {175-184},
  doi = {10.11648/j.ajset.20251004.12},
  url = {https://doi.org/10.11648/j.ajset.20251004.12},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajset.20251004.12},
  abstract = {In a distressed economy with increasing cost of fuel, it is necessary to achieve control of automobile engine over transient behavior and meet performance objectives within the planned life of the vehicle. In this paper the objective is to design a model predictive controller (MPC) that will minimize fuel consumption in a four stroke cylinder engine using idle speed control. Engine speed is most often affected by unexpected disturbances, and the higher the engine speed at idle the higher the consumption of fuel. Non linear dynamic equations of an idle speed engine were obtained and later transformed to equivalent linear equation by linearization method. The designed MPC was integrated with a linearized equation of the plant. The MPC approach was used to forecast and control the four stroke six cylinder engine model in the presence of unexpected disturbance to achieve the desired objective. Simulations were performed in Matlab/Simulink and the results obtained showed that at different instances when disturbances entered the system, with MPC controller in the loop, the instability introduced by the disturbance was eliminated and the referenced idle speed tracked. There by maintaining the engine idle speed at 600 RPM.},
 year = {2025}
}

Copy | Download

TY  - JOUR
T1  - Minimization of Fuel Consumption in Four Stroke Six Cylinder Engines Using Idle Speed Control

AU  - Chinonso Francis Nkeoma Ubbaonu
AU  - Damian Obioma Dike
AU  - Raymond O. Opara
AU  - Chiedozie Francis Paulinus-Nwamuo
AU  - Ernest Ezugwu
Y1  - 2025/10/14
PY  - 2025
N1  - https://doi.org/10.11648/j.ajset.20251004.12
DO  - 10.11648/j.ajset.20251004.12
T2  - American Journal of Science, Engineering and Technology
JF  - American Journal of Science, Engineering and Technology
JO  - American Journal of Science, Engineering and Technology
SP  - 175
EP  - 184
PB  - Science Publishing Group
SN  - 2578-8353
UR  - https://doi.org/10.11648/j.ajset.20251004.12
AB  - In a distressed economy with increasing cost of fuel, it is necessary to achieve control of automobile engine over transient behavior and meet performance objectives within the planned life of the vehicle. In this paper the objective is to design a model predictive controller (MPC) that will minimize fuel consumption in a four stroke cylinder engine using idle speed control. Engine speed is most often affected by unexpected disturbances, and the higher the engine speed at idle the higher the consumption of fuel. Non linear dynamic equations of an idle speed engine were obtained and later transformed to equivalent linear equation by linearization method. The designed MPC was integrated with a linearized equation of the plant. The MPC approach was used to forecast and control the four stroke six cylinder engine model in the presence of unexpected disturbance to achieve the desired objective. Simulations were performed in Matlab/Simulink and the results obtained showed that at different instances when disturbances entered the system, with MPC controller in the loop, the instability introduced by the disturbance was eliminated and the referenced idle speed tracked. There by maintaining the engine idle speed at 600 RPM.
VL  - 10
IS  - 4
ER  -

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