Steady-State Characteristics Study of a Power Split Hydraulic Transmission
Steady-State Characteristics Study of a Power Split Hydraulic Transmission
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DOI：
10.1109/tmech.2020.3001363
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发表时间：
2021-02
期刊：
影响因子：
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通讯作者：
Feng Wang;Haoxiang Zhang;Bing Xu;K. Stelson
中科院分区：
文献类型：
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作者：
Feng Wang;Haoxiang Zhang;Bing Xu;K. Stelson
对功率分流式液压传动的稳态特性进行了研究。液力变速器是一种可供选择的动力分流式液压混合动力传动系统的动力分流装置。它是建立在一个平衡叶片泵，其中一个输出轴添加和耦合到其浮动环。浮环和叶片之间的相对运动产生的内摩擦力矩有助于驱动输出轴。这提高了从输入轴到输出轴的机械传递效率，使其比传统的静液压传动更具竞争力。通过理论分析和实验研究，对液压传动的稳态特性进行了研究。建立了液力传动系统输入、输出轴扭矩和输出流量的数学模型。研究表明，输入输出轴转矩不仅与出口压力有关，还与轴差转速有关。出口流速与差动轴速度成比例。最后介绍了一种基于功率分流液压传动的液力机械传动。介绍了液压机械传动的特点及系统应用。
The steady-state characteristics of a power split hydraulic transmission were carefully studied in this article. The hydraulic transmission is an alternative power split device for power split hydraulic hybrid drivetrain. It was built from a balanced vane pump, where an output shaft is added and coupled to its floating ring. The internal friction torques due to the relative motion between floating ring and vanes help to drive the output shaft. This improves the mechanical transfer efficiency from input to output shaft, making it more competitive than conventional hydrostatic transmission. The steady-state characteristics of the hydraulic transmission were investigated through both theoretical analysis and experimental studies. Mathematical models of the input and output shaft torques, and the outlet flow rate of the hydraulic transmission were developed. Studies show that the input and output shaft torques are not only dependent on outlet pressure, but also dependent on differential shaft speed. The outlet flow rate is proportional to the differential shaft speed. Finally, a hydro-mechanical transmission based on power split hydraulic transmission was introduced. The characteristics and system application of the hydro-mechanical transmission were given.