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Theoretical Calculations and Experimental Studies of Power Loss in Dual-Clutch Transmission of Agricultural Tractors

Author

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  • Hyoung-Jong Ahn

    (Tractor Advanced Development Group, LS Mtron, Anyang 14118, Republic of Korea
    Department of Biosystems Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea)

  • Young-Jun Park

    (Department of Biosystems Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea)

  • Su-Chul Kim

    (Department of Smart Industrial Machinery, Korea Institute of Machinery & Materials, Daejeon 34103, Republic of Korea)

  • Chanho Choi

    (Tractor Advanced Development Group, LS Mtron, Anyang 14118, Republic of Korea)

Abstract

Recent carbon neutrality policies have led to active research in the agricultural tractor sector to replace internal combustion engines, making it imperative to minimize power losses to improve efficiency. Dual-clutch transmissions (DCTs) have been employed in agricultural tractors primarily due to their short shift time and smooth shift feel. However, DCTs have a relatively large number of components and complex structures owing to spatial constraints, making it challenging to predict power losses. Therefore, to predict DCT power losses, this study defined oil churning by considering the structural characteristics and oil circulation and comparing and analyzing the theoretical calculation and test results of power losses at different oil levels. Power loss was calculated based on ISO standards and fluid viscosity theory, and tests were performed to verify. We calculated power losses based on the defined oil churning of a DCT in agricultural tractors and confirmed that their consistency in test results improved when reflecting the lubrication state, considering the structural features and oil circulation. In addition, the factors contributing to power loss under low- and high-speed conditions were analyzed by calculating the power loss for each component.

Suggested Citation

  • Hyoung-Jong Ahn & Young-Jun Park & Su-Chul Kim & Chanho Choi, 2023. "Theoretical Calculations and Experimental Studies of Power Loss in Dual-Clutch Transmission of Agricultural Tractors," Agriculture, MDPI, vol. 13(6), pages 1-16, June.
    • Handle: RePEc:gam:jagris:v:13:y:2023:i:6:p:1225-:d:1168235
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    References listed on IDEAS

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    1. Fabio Vacca & Stefano De Pinto & Ahu Ece Hartavi Karci & Patrick Gruber & Fabio Viotto & Carlo Cavallino & Jacopo Rossi & Aldo Sorniotti, 2017. "On the Energy Efficiency of Dual Clutch Transmissions and Automated Manual Transmissions," Energies, MDPI, vol. 10(10), pages 1-22, October.
    2. Hongtu Yang & Yan Sun & Changgao Xia & Hongdang Zhang, 2022. "Research on Energy Management Strategy of Fuel Cell Electric Tractor Based on Multi-Algorithm Fusion and Optimization," Energies, MDPI, vol. 15(17), pages 1-15, September.
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    Cited by:

    1. Seo-Jung Byeon & Seong-Jun Kim & Jin-Kam Park & Young-Jun Park & Jin-Woong Lee, 2024. "Parameter Study for Establishing a Synchronizer Control Strategy in Tractor Dual-Clutch Transmission," Agriculture, MDPI, vol. 14(2), pages 1-34, January.
    2. Ya Li & Xiaohan Chen & Xiaorong Han & Ning Xu & Zhiqiang Zhai & Kai Lu & Youfeng Zhu & Guangming Wang, 2024. "Application of Computer Simulation Technology in the Development of Tractor Transmission Systems," Agriculture, MDPI, vol. 14(9), pages 1-34, September.
    3. Huajun Chen & Meng Wang & Xiangdong Ni & Xiangchao Meng & Wenqing Cai & Yiqing Li & Baoyu Zhai & Hongbin He & Yuyang Wang, 2024. "Transmission Characteristics and Experiment of Hydraulic–Mechanical Transmission of Cotton Picker," Agriculture, MDPI, vol. 14(8), pages 1-19, July.

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