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Designing passenger vehicle diesel engine cams with enhanced dynamic characteristics

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Category: Content №6 2025

Last Updated on 25 December 2025

Published on 30 November -0001

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Authors:

I. F. Alrefo*, orcid.org/0000-0002-5626-7121, Al-Balqa Applied University, Al Salt, Jordan, е-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

M. O. Rawashdeh, orcid.org/0000-0001-7241-5000, Al-Balqa Applied University, Al Salt, Jordan, е-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

O. Matsulevych, orcid.org/0000-0001-5553-709X, Dmytro Motornyi Tavria State Agrotechnological University, Zaporizhzhia, Ukraine, е-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

O. Vershkov, orcid.org/0000-0001-5137-3235, Dmytro Motornyi Tavria State Agrotechnological University, Zaporizhzhia, Ukraine, е-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

S. Halko, orcid.org/0000-0001-7991-0311, Dmytro Motornyi Tavria State Agrotechnological University, Zaporizhzhia, Ukraine, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

O. Suprun, orcid.org/0000-0003-4369-712X, Dmytro Motornyi Tavria State Agrotechnological University, Zaporizhzhia, Ukraine, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

* Corresponding author e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

повний текст / full article

Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu. 2025, (6): 061 - 068

https://doi.org/10.33271/nvngu/2025-6/061

Abstract:

Purpose. Automating the design of working profiles for cam mechanisms in heavy-, medium- and light-duty internal combustion engines with enhanced dynamic characteristics.

Methodology. By applying discrete differentiation to the tabulated law of tappet displacement, non-oscillatory graphs for velocity and acceleration were obtained. These graphs served as the basis for determining the polar coordinates of the cam profile. The SolidWorks CAD system was employed to generate a 3D computer model of the camshaft with enhanced dynamic characteristics.

Findings. Tuning camshafts ensure the optimum supply of a full charge of the mixture to the cylinder by increasing the height and speed of valve lift. A notable characteristic of these camshafts is their ability to extend the threshold of detonation at lower crankshaft speeds. The cam profiles of these camshafts are characterised by exceptional smoothness, ensuring reliable operation of the valve timing mechanism. The performed calculations show that the tuning cam profile has a greater radius of curvature at the cam-tappet contact point compared to the conventional profile. This provides more favourable conditions for hydrodynamic oil wedge formation between the contact surfaces due to an increase in the hydrodynamic effective velocity.

Originality. Implementing a novel approach to camshaft design enabled the creation of tuning camshafts, ensuring optimal cylinder filling by maximising valve lift height and speed. A key original feature is their capacity to raise the detonation limit at lower RPMs, complemented by exceptionally smooth profiles that contribute to reliable valve timing.

Practical value. A universal methodology for profiling the functional surfaces of tuning camshafts intended for heavy-, medium- and light-duty engines has been developed, ensuring their operational reliability and durability.

Keywords: internal combustion engine, tuning camshaft, cam, valve timing mechanism

References.

1. Sujesh, G., & Ramesh, S. (2018). Modeling and control of diesel engines: A systematic review. Alexandria Engineering Journal, 57(4), 4033-4048. https://doi.org/10.1016/j.aej.2018.02.011

2. Ortolani, P., & Hall, A. (2022). Piston Concept, Design and Testing for Extreme High Efficiency Internal Combustion Engine Development. SAE Technical Paper, 2022-01-0598. https://doi.org/10.4271/2022-01-0598

3. Mata, C., Rojas-Reinoso, V., & Soriano, J. A. (2023). Experimental determination and modelling of fuel rate of injection: A review. Fuel, 343, 127895. https://doi.org/10.1016/j.fuel.2023.127895

4. Morgan, R., Lenartowicz, C., Vogiatzaki, K., Harvey, S., Kennaird, D., Owen, N., Pickett, R., & Atkins, A. (2019). The Ultra Low Emissions Potential of the Recuperated Split Cycle Combustion System. SAE Technical Paper, 2019-24-0189. https://doi.org/10.4271/2019-24-0189

5. Hwang, Y. M., & Manabe, K. I. (2021). Latest Hydroforming Technology of Metallic Tubes and Sheets. Metals, 11, 1360. https://doi.org/10.3390/met11091360

6. Wang, Y., Stella, J., Darut, G., Poirier, T., Liao, H. L., & Planche, M. P. (2017). APS prepared NiCrBSi-YSZ composite coatings for protection against cavitation erosion. Journal of Alloys and Compounds, 699, 1095-1103. https://doi.org/10.1016/j.jallcom.2017.01.034

7. Zheng, Q., Jiang, D., Huang, C., Shang, X., & Ju, S. (2015). Analysis of failure loads and optimal design of composite lattice cylinder under axial compression. Composite Structures, 131, 885-894. https://doi.org/10.1016/j.compstruct.2015.06.047

8. Altarazi, S., Ammouri, M., & Hijazi, A. (2018). Artificial neural network modeling to evaluate polyvinylchloride composites’ properties. Comput. Mater. Sci., 153, 1-9. https://doi.org/10.1016/j.commatsci.2018.06.003

9. Qi, B., Sun, X.M., Liu, B.J., Wu, X., Gao, R.T., Zhu, H., & Li, Y.H. (2022). Influencing Factors of Agricultural Machinery Accidents Based on Fuzzy Fault Tree Analysis. Journal of Computational Methods in Sciences and Engineering, 22, 871-881. https://doi.org/10.3233/JCM-225947

10.      Prasetya, R., & Kijang, A. (2021). LGX camshaft’s failure analysis using the finite element method approach. IOP Conference Series: Materials Science and Engineering, 1034, 012014. https://doi.org/10.1088/1757-899X/1034/1/012014

11.      Mahat, A. H. B., Saleh, M. H. B., & Fauthan, M. A. B. (2018). Malaysia Investigation and Failure Analysis for Camshaft. Advanced J. of Technical and Vocational Education, 2(3), 23-27. https://doi.org/10.26666/rmp.ajtve.2018.3.4

12.      Panchenko, A., Voloshina, A., Boltyansky, O., Milaeva, I., Grechka, I., Khovanskyy, S., …, & Paranyak, N. (2018). Designing the flow-through parts of distribution systems for the PRG series planetary hydraulic motors. Eastern-European Journal of Enterprise Technologies, 3, 1(93), 67-77. https://doi.org/10.15587/1729-4061.2018.132504

13.      Рanchenko, A., Voloshina, A., Milaeva, I., Panchenko, I., & Titova, O. (2018). The Influence of the form Error after Rotor Manufacturing on the Output Characteristics of an Orbital Hydraulic Motor. International Journal of Engineering and Technology, 7(4.3), 1-5. https://doi.org/10.14419/ijet.v7i4.3.19542

14.      Voloshina, A., Panchenko, A., Titova, O., Milaeva, I., & Pastu­shenko, A. (2021). Prediction of Changes in the Output Characteristics of the Planetary Hydraulic Motor. Advanced Manufacturing Processes II, 744-754. https://doi.org/10.1007/978-3-030-68014-5_72

15.      Ortolani, P., & Nation, F. (2023). New Cam Profile Design Approach, Analysis and Testing for Extreme High Efficiency Internal Combustion Engine Development. SAE Technical Paper, 01(0436). https://doi.org/10.4271/2023-01-0436

16.      Sürmen, A., Arslan, R., Kopmaz, O., Avcı, A., Karagöz, İ., & Karamangil, M.İ. (2017). Development of a variable-profile cam to enhance the volumetric efficiency of IC engines. International Journal of Vehicle Design, 73, 1/2/3, 63-75. https://doi.org/10.1504/IJVD.2017.082581

17.      Sarıdemir, S., & Saruhan, H. (2014). Experimental analysis of maximum valve lift effects in cam-follower system for internal combustion engines. Journal of Mechanical Science and Technology, 28, 3443-3448. https://doi.org/10.1007/s12206-014-0805-z

18.      Liu, S., Chen, Z., & Zhu, Y. (2015). Rational Quadratic Trigonometric Interpolation Spline for Data Visualization. Mathematical Problems in Engineering, 983120, 1-20. https://doi.org/10.1155/2015/983120

19.      Kholodniak, Y., Havrylenko, E., Pykhtieieva, I., & Shcherbyna, V. (2019). Design of Functional Surfaces in CAD System of SolidWorks via Specialized Software. Modern Development Paths of Agricultural Production, 63-74. Springer: Cham, Switzerland. https://doi.org/10.1007/978-3-030-14918-5_7

20.      Havrylenko, Y., Kholodniak, Y., Halko, S., Vershkov, O., Bondarenko, L., Suprun, O., Miroshnyk, O., …, & Gackowska, M. (2021). Interpolation with specified error of a point series belonging to a monotone curve. Entropy, 23(5), 493, 1-13. https://doi.org/10.3390/e23050493

21.      Havrylenko, Y., Cortez, J. I., Kholodniak, Y., Alieksieieva, H., & Garcia, G. T. (2020). Modelling of surfaces of engineering products on the basis of array of points. Tehnički Vjesnik, 27, 2034-2043. https://doi.org/10.17559/TV-20190720081227

22.      Alrefo, I. F., Rawashdeh, M. O., Matsulevych, O., Vershkov, О., Halko, S., & Suprun, O. (2024). Designing the functional surfaces of camshaft cams of internal combustion engines. Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu, (3), 72-78. https://doi.org/10.33271/nvngu/2024-3/072

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