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Energy and Fuel Consumption of a New Concept of Hydro-Mechanical Tractor Transmission

Author

Listed:
  • Yehui Zhao

    (College of Mechanical and Electronic Engineering, Shandong Agricultural University, Taian 271018, China
    Shandong Provincial Engineering Laboratory of Agricultural Equipment Intelligence, Taian 271018, China
    These authors contributed equally to this work.)

  • Xiaohan Chen

    (College of Mechanical and Electronic Engineering, Shandong Agricultural University, Taian 271018, China
    Shandong Provincial Engineering Laboratory of Agricultural Equipment Intelligence, Taian 271018, China
    These authors contributed equally to this work.)

  • Yue Song

    (College of Engineering, Nanjing Agricultural University, Nanjing 210031, China
    These authors contributed equally to this work.)

  • Guangming Wang

    (College of Mechanical and Electronic Engineering, Shandong Agricultural University, Taian 271018, China
    Shandong Provincial Engineering Laboratory of Agricultural Equipment Intelligence, Taian 271018, China)

  • Zhiqiang Zhai

    (College of Engineering, China Agricultural University, Beijing 100083, China)

Abstract

Tractors equipped with hydro-mechanical transmissions (HMTs) typically deliver excellent fuel-saving performance but are expensive. To improve the fuel economy of cheaper tractors, the authors of this study have designed an HMT for a tractor that uses a simple, single planetary gear to merge the power and analyze its consumption of energy and fuel. First, we introduce the principle of transmission of the HMT and formulate a model to calculate its speed, torque, and efficiency. Second, we analyze the parasitic power of the HMT and simulate its characteristics of efficiency. Finally, we compare the efficiency of transmission and fuel consumption of HMTs with a single planetary gear and Simpson planetary gears. The results showed that parasitic power was obtained when the displacement of the variable pump was negative and the maximum ratio of hydrostatic power in each range was 45–46%. The highest efficiency of the proposed HMT in ranges R L (low range) and R H (high range) were 87% and 89%, respectively. It has a simpler structure than the HMT with Simpson planetary gears and consumes lower amounts of energy and fuel. These attributes make it suitable for use as a transmission system for large- and medium-power tractors with a continuously variable transmission.

Suggested Citation

  • Yehui Zhao & Xiaohan Chen & Yue Song & Guangming Wang & Zhiqiang Zhai, 2023. "Energy and Fuel Consumption of a New Concept of Hydro-Mechanical Tractor Transmission," Sustainability, MDPI, vol. 15(14), pages 1-23, July.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:14:p:10809-:d:1190705
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    References listed on IDEAS

    as
    1. Liu, Hongxiang & Han, Ling & Cao, Yue, 2020. "Improving transmission efficiency and reducing energy consumption with automotive continuously variable transmission: A model prediction comprehensive optimization approach," Applied Energy, Elsevier, vol. 274(C).
    2. Yung-Chuan Chen & Li-Wen Chen & Ming-Yen Chang, 2022. "A Design of an Unmanned Electric Tractor Platform," Agriculture, MDPI, vol. 12(1), pages 1-19, January.
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