ANALYSIS OF FRICTION COEFFICIENT AND CLUTCH HEAT ABSORPTION IN KF-40 TYPE VEHICLE

Try Laksono Febryan AS, Ibnu Mubarak, Cecep Dalda Astmamalaya

Abstract


The clutch system performance is strongly influenced by the friction coefficient, heat absorption capability, and service life of the clutch components. Therefore, these parameters must be evaluated to ensure transmission reliability. This study aimed to analyze the friction coefficient, heat absorption, and estimated service life of the clutch system in a KF-40 type vehicle. A quantitative method with an experimental approach was employed through technical parameter measurements, theoretical calculations based on vehicle specifications, and empirical testing under both level-road and uphill operating conditions. The results showed that the clutch friction coefficient was 0.17, indicating sufficient frictional performance for effective torque transmission under normal operating conditions. The clutch operating suhue due to heat absorption reached 255.48°C, indicating a relatively high thermal condition while remaining within the operating capability of organic friction lining materials. The estimated service life of the clutch disc was approximately 1.1 years under normal vehicle operation. This study provides technical insights for evaluating and improving the performance and reliability of the KF-40 clutch system.

 

Kinerja clutch dipengaruhi oleh karakteristik koefisien gesek, kemampuan penyerapan panas, serta umur pakai komponen sehingga ketiga parameter tersebut perlu dianalisis untuk menjamin keandalan sistem transmisi. Penelitian ini bertujuan untuk menganalisis nilai koefisien gesek, penyerapan panas, dan estimasi umur pakai clutch pada kendaraan tipe KF-40. Penelitian menggunakan metode kuantitatif dengan pendekatan eksperimental melalui pengukuran parameter teknis, perhitungan teoritis berdasarkan spesifikasi kendaraan, serta pengujian empiris pada kondisi jalan datar dan menanjak. Hasil penelitian menunjukkan bahwa nilai koefisien gesek clutch sebesar 0,17, yang masih mampu mentransmisikan torsi secara optimal pada kondisi operasi normal. Suhu kerja akibat penyerapan panas mencapai 255,48°C, yang menunjukkan sistem clutch bekerja pada suhu tinggi namun masih berada dalam batas kemampuan material kampas kopling organik. Estimasi umur pakai clutch disc diperoleh sekitar 1,1 tahun pada asumsi penggunaan kendaraan secara normal. Temuan ini dapat dijadikan sebagai acuan dalam evaluasi performa dan pengembangan sistem kopling pada kendaraan tipe KF-40.


Keywords


Clutch, Heat Absorption, Service Life, KF-40

Full Text:

PDF

References


Abdullah, O. I., Schlattmann, J., Al-Shabibi, A., & Al-Hajjar, H. (2018). Numerical and experimental investigation of dry clutch thermal behavior. Tribology in Industry, 40(3), 471–482.

Blau, P. J. (2017). Friction Science and Technology: From Concepts to Applications (2nd ed.). CRC Press.

Budynas, R. G., & Nisbett, J. K. (2020). Shigley's Mechanical Engineering Design (11th ed.). McGraw-Hill Education.

Dong, Y., Ma, B., Xiong, C., Zhao, Q., Chen, H., Zhang, Y., & Xie, G. (2024). Tribological and Wear Properties of Cu-Based Composite Reinforced by Core–Shell Structure in Multi-Disk Clutch. Tribology Letters, 72(66), 1–15.

Gkinis, T., Rahmani, R., Rahnejat, H., & O'Mahony, M. (2018). Heat Generation and Transfer in Automotive Dry Clutch Engagement. Journal of Zhejiang University-SCIENCE A, 19(3), 175–188.

Gkinis, T., Rahmani, R., & Rahnejat, H. (2019). Integrated Thermal and Dynamic Analysis of Dry Automotive Clutch Linings. Applied Sciences, 9(20), 4287.

Holman, J. P. (2012). Heat Transfer (10th ed.). McGraw-Hill Education.

Liu, Y., et al. (2024). Effect of Repeated Thermal Loading on Friction Coefficient Degradation of Automotive Clutch Materials. Tribology International.

Ma, Z., Zheng, C., Xiong, C., Yu, L., Liu, Y., and Zhang, C. (2022). Friction-Wear Characteristics of Carbon Fiber Reinforced Paper-Based Friction Materials Under Different Working Conditions. Materials, 15(11), 3818.

Ma, B., et al. (2024). Thermal Characteristics and Tribological Performance of Wet Clutch Systems Under Variable Operating Conditions. Tribology International.

Rahmani, R., Rahnejat, H., & Gkinis, T. (2019). Thermal and Tribological Characteristics of Automotive Clutch Lining Materials Under Severe Operating Conditions. Applied Sciences.

Setiawan, A. (2022). Karakteristik Koefisien Gesek, Daya Serap Oli, dan Struktur Mikro Variasi Komposit Serbuk Kayu, Serat Kelapa, Serbuk Aluminium, dan Serbuk Tembaga untuk Kampas Kopling Sepeda Motor Matic. Jurnal Rekayasa Mesin, 17(1), 31–40.

Shang, X., et al. (2024). Research on Clutch Friction Work Calculation During AT Gear Shifts. International Journal of Automotive Technology.

Shigley’s (2014) Mechanical Engineering Design. McGraw Hill Higher Education

Winaryo, H., & Winaryo, H. B. (2023). Analisis Perbandingan Material Kampas Kopling Keramik dan Organik Terhadap Performa dan Umur Pakai. Jurnal Teknik Mesin, 11(2), 85–94.

Wu, J., Ma, B., Li, H., & Wang, L. (2021). The Suhue Field of Friction Disc in Wet Clutch Involving The Unconventional Heat Dissipation on The Contact Surface. Tribology Transactions, 64(1), 1–9.

Wu, J., Ma, B., Li, H., & Liu, J. (2019). Suhue Rise Characteristic of Friction Disc in Wet Clutch Considering The Local Heat Dissipation on The Contact Surface. Transactions of Beijing Institute of Technology, 39(9), 925–932.

Xue, M., Fu, Y., Geng, X., & Lei, Y. (2024). Suhue Analysis of Wet Clutch Friction Pair Considering Axial Pressure Attenuation Effect. Tribology Transactions, 67(3), 387–400.

Zhang, P., Zheng, C., Xiong, C., Yu, L., & Luo, D. (2025). A Quantitative Method of Calculating Transient Nonlinear Heat Partition Coefficient Between Clutch Friction Discs with Deep Learning. Proceedings Of The Institution Of Mechanical Engineers, Part D: Journal Of Automobile Engineering.

Zhang, P., Zheng, C., Xiong, C., Zu, L., Haoran, C., & Ma, B. (2026). Coupling Mechanism and Data-Driven Approaches for Wet Clutch Frictional Heat Modeling and Analysis. Tribology International, 214, 111154.




DOI: https://doi.org/10.17509/motor.v3i1.103683

DOI (PDF): https://doi.org/10.17509/motor.v3i1.103683.g37102

Refbacks

  • There are currently no refbacks.


© 2024 MOTOR: Journal of Automotive Engineering