Research Article | | Peer-Reviewed

Development and Fabrication of Engine-operated Pulses Milling Machine

Received: 29 July 2025     Accepted: 11 August 2025     Published: 20 December 2025
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Abstract

Despite Ethiopia being Africa's largest producer of pulse crops, the lack of a milling machine for processing pulse grains reduced the yield and benefits acquired. In order to prolong pulses' shelf life, keep them from spoiling, and maintain their nutritional value, processing is essential. Pulse processing facilitates a reduction of fibre and tannin contents and improvement in the appearance, texture, cooking quality, palatability, and digestibility of grain legumes. The purpose of this article is to design and build portable engine-powered grinding machines for faba beans, peas, and lentils. The pulses milling prototype was developed by considering the local availability of materials at Bako Agricultural Engineering Research Centre (BAERC) for pulses crops like faba bean, pea, and lentil. The manufactured prototype was easily portable and used for areas of Ethiopia where electric service was not available. The fabricated pulses milling prototype was made up of a frame, hopper, cleaning unit, and splitting unit. There were two emery discs in the splitting unit: a rotating type and a fixed stone. The machine was operated by four pulleys; two driving pulleys were mounted on the crankshaft of the engine, one driven pulley was mounted on the fan shaft, and one pulley was mounted on the main shaft. Finally, the prototype pulse milling machine needs 3.67 kW of total power to run.

Published in Engineering and Applied Sciences (Volume 10, Issue 6)
DOI 10.11648/j.eas.20251006.11
Page(s) 134-139
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

Pulses, Milling Machine, Faba Bean, Pea, Lentil

References
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[2] S. K. Verma, A. Verma, A. Shukla, and A. Kumar, ‘Role of Pulses to Improve Fertility Status of Soil’.
[3] E. Kebede, ‘Grain legumes production and productivity in Ethiopian smallholder agricultural system, contribution to livelihoods and the way forward’, Cogent Food Agric., vol. 6, no. 1, p. 1722353, 2020.
[4] T. Getachew, ‘Pulse Crops Production Opportunities, Challenges and Its Value Chain in Ethiopia: A Review Article’, J. Environ. Earth Sci., vol. 9, no. 1, pp. 20–29, 2019,
[5] S. S. Deshpande, S. K. Sathe, D. K. Salunkhe, and D. P. Cornforth, ‘Effects of dehulling on phytic acid, polyphenols, and enzyme inhibitors of dry beans (Phaseolus vulgaris L.)’, J. Food Sci., vol. 47, no. 6, pp. 1846–1850, 1982.
[6] A. D. Deutschman, W. J. Michels, and C. E. Wilson, ‘Machine design: theory and practice’, (No Title), 1975.
[7] T. H. Mohamed, H. A. Radwan, A. O. Elashhab, and M. Y. Adly, ‘Design and evaluation of a small hammer mill’, Egypt J Agric Res, vol. 93, no. 5, pp. 481–496, 2015.
[8] R. S. Khurmi and J. K. Gupta, ‘A Textbook of Machine Design. First Multicolour Edition’, Eurasia Publ. House Ltd, vol. 7361, pp. 509–556, 2005.
[9] A. S. Hall, A. R. Holowenko, and H. G. Laughlin, Theory and problems of machine design. Schaum’s Outline Series, McGraw-Hill Book Company, 1982.
[10] ‘Hall, A. S., Holowenko, A. R. and Laughlin, H. G. (1982) Theory and problems of machine design. Schaum’s Outline Series, McGraw-Hill Book Company. p. 1982, 1982.
[11] Khurmi and Gupta (2005). A Test Book of Machine Design (1st Multi-color Edition). Eurasia Publishing House (PVT.) LTD., New Delhi, India, p. 2005, 2005.
[12] ‘“ASME. 1995. Design of Transmission Shafting. American Society of Mechanical Engineering, New York, NY, USA.,” p. 1995, 1995.’, p. 1995, 1995.
[13] J. Olaoye, K. Oni, M. O. A. Technology, and 2011., ‘Computer applications for selecting operating parameters in a stationary grain crop thresher’, vol. 7, no. 1, pp. 39–56, 2011, [Online]. Available:
[14] M. Paksoy and C. Aydin, ‘Determination of some physical and mechanical properties of pea (Pisum sativum L.) seeds.’, 2006.
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  • APA Style

    Diro, T., Abera, D. (2025). Development and Fabrication of Engine-operated Pulses Milling Machine. Engineering and Applied Sciences, 10(6), 134-139. https://doi.org/10.11648/j.eas.20251006.11

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    ACS Style

    Diro, T.; Abera, D. Development and Fabrication of Engine-operated Pulses Milling Machine. Eng. Appl. Sci. 2025, 10(6), 134-139. doi: 10.11648/j.eas.20251006.11

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    AMA Style

    Diro T, Abera D. Development and Fabrication of Engine-operated Pulses Milling Machine. Eng Appl Sci. 2025;10(6):134-139. doi: 10.11648/j.eas.20251006.11

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  • @article{10.11648/j.eas.20251006.11,
      author = {Teressa Diro and Desta Abera},
      title = {Development and Fabrication of Engine-operated Pulses Milling Machine},
      journal = {Engineering and Applied Sciences},
      volume = {10},
      number = {6},
      pages = {134-139},
      doi = {10.11648/j.eas.20251006.11},
      url = {https://doi.org/10.11648/j.eas.20251006.11},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.eas.20251006.11},
      abstract = {Despite Ethiopia being Africa's largest producer of pulse crops, the lack of a milling machine for processing pulse grains reduced the yield and benefits acquired. In order to prolong pulses' shelf life, keep them from spoiling, and maintain their nutritional value, processing is essential. Pulse processing facilitates a reduction of fibre and tannin contents and improvement in the appearance, texture, cooking quality, palatability, and digestibility of grain legumes. The purpose of this article is to design and build portable engine-powered grinding machines for faba beans, peas, and lentils. The pulses milling prototype was developed by considering the local availability of materials at Bako Agricultural Engineering Research Centre (BAERC) for pulses crops like faba bean, pea, and lentil. The manufactured prototype was easily portable and used for areas of Ethiopia where electric service was not available. The fabricated pulses milling prototype was made up of a frame, hopper, cleaning unit, and splitting unit. There were two emery discs in the splitting unit: a rotating type and a fixed stone. The machine was operated by four pulleys; two driving pulleys were mounted on the crankshaft of the engine, one driven pulley was mounted on the fan shaft, and one pulley was mounted on the main shaft. Finally, the prototype pulse milling machine needs 3.67 kW of total power to run.},
     year = {2025}
    }
    

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  • TY  - JOUR
    T1  - Development and Fabrication of Engine-operated Pulses Milling Machine
    AU  - Teressa Diro
    AU  - Desta Abera
    Y1  - 2025/12/20
    PY  - 2025
    N1  - https://doi.org/10.11648/j.eas.20251006.11
    DO  - 10.11648/j.eas.20251006.11
    T2  - Engineering and Applied Sciences
    JF  - Engineering and Applied Sciences
    JO  - Engineering and Applied Sciences
    SP  - 134
    EP  - 139
    PB  - Science Publishing Group
    SN  - 2575-1468
    UR  - https://doi.org/10.11648/j.eas.20251006.11
    AB  - Despite Ethiopia being Africa's largest producer of pulse crops, the lack of a milling machine for processing pulse grains reduced the yield and benefits acquired. In order to prolong pulses' shelf life, keep them from spoiling, and maintain their nutritional value, processing is essential. Pulse processing facilitates a reduction of fibre and tannin contents and improvement in the appearance, texture, cooking quality, palatability, and digestibility of grain legumes. The purpose of this article is to design and build portable engine-powered grinding machines for faba beans, peas, and lentils. The pulses milling prototype was developed by considering the local availability of materials at Bako Agricultural Engineering Research Centre (BAERC) for pulses crops like faba bean, pea, and lentil. The manufactured prototype was easily portable and used for areas of Ethiopia where electric service was not available. The fabricated pulses milling prototype was made up of a frame, hopper, cleaning unit, and splitting unit. There were two emery discs in the splitting unit: a rotating type and a fixed stone. The machine was operated by four pulleys; two driving pulleys were mounted on the crankshaft of the engine, one driven pulley was mounted on the fan shaft, and one pulley was mounted on the main shaft. Finally, the prototype pulse milling machine needs 3.67 kW of total power to run.
    VL  - 10
    IS  - 6
    ER  - 

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