Abstract A novel decentralised pump-controlled hydraulic scheme is proposed to reduce the power consumed by a dual clutch transmission hydraulic actuator. Qualitative analysis proves that decomposing the traditional centralised valve-controlled hydraulic system (CVHS) into clutch control subsystem, clutch cooling subsystem, and transmission lubrication subsystem can effectively decrease energy loss. A forward design method is developed for this novel hydraulic system. In this study, the efficiency models of the CVHS and the decentralised pump-controlled hydraulic system (DPHS) are established. The simulation results demonstrate that the average energy efficiency of DPHS is 19.97% higher than that of CVHS under the dynamic shift strategy, and the average energy efficiency of DPHS is 20.49% higher than that of CVHS under the economic shift strategy.

中文翻译：

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湿式双离合变速器分散泵控液压系统设计及效率分析

摘要 提出了一种新的分散式泵控液压方案，以减少双离合变速器液压执行器消耗的功率。定性分析证明，将传统的集中式阀控液压系统（CVHS）分解为离合器控制子系统、离合器冷却子系统和变速器润滑子系统，可以有效降低能量损失。为这种新型液压系统开发了一种正向设计方法。在本研究中，建立了 CVHS 和分散式泵控液压系统 (DPHS) 的效率模型。仿真结果表明，动态换挡策略下DPHS平均能效比CVHS高19.97%，经济换挡策略下DPHS平均能效比CVHS高20.49%。