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Modeling of Power Transition in Full Power Shift of Hydromechanical Transmission

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  • Yong Bao
  • Zaimin Zhong
  • Shujun Yang

Abstract

This paper shall explore the dynamics of power transition in full power shift of hydromechanical transmission (HMT) and focus on the ideal target displacement ratio. An arithmetic two-range HMT is taken as the research object. A mathematical model of power transition in full power shift is established, including the hydraulic transmission unit model and the brake torque model during the double brakes overlapping. Aiming at the constant output power of HMT in the shift process, a prediction model of the displacement ratio target value is established, and the prediction method is proposed. By combining theoretical analysis and experimental research, it proves that the power transition model can describe the power transition process. And the prediction method of the displacement ratio target value proposed in this paper can complete the power transition when the double brakes overlap. In the power shift process, the output power can be transmitted normally in full power. The power transition model and the prediction method of the displacement ratio target value can provide theoretical and engineering references for the full power shift of HMT.

Suggested Citation

  • Yong Bao & Zaimin Zhong & Shujun Yang, 2020. "Modeling of Power Transition in Full Power Shift of Hydromechanical Transmission," Mathematical Problems in Engineering, Hindawi, vol. 2020, pages 1-14, February.
    • Handle: RePEc:hin:jnlmpe:5296713
    DOI: 10.1155/2020/5296713
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