Energy-saving Study On A New-style Double-acting Vane Steering Pump

Power steering pump is a core part of hydraulic power steering system. Because high energy loss is a serious problem of usual double-acting vane steering pump, the study on energy conservation is regarded as a important task in the research of hydraulic power steering system. A new-style vane steering pump based on twin pump is put forward in this thesis to reduce the energy loss and improve the efficiency of power steering pump. In this article, theoretical analysis, simulation, and experiments are made to study the principle, basic structure and energy loss of this new-style steering pump, which come to a conclusion that the new-style steering pump has obvious energy-saving effect in some condition.In chapter 1, the function and classification of power steering system are described firstly. After introduction of hydraulic power steering system's classification, structure and principle, the operating principle and energy loss of usual double-acting vane steering pump are analyzed significantly. Then some typical energy conservation methods are introduced. The background, meaning and content of this research are indicated in the end of this chapter.In the beginning of chapter 2, two schemes of new-style steering pump are put forward. The first is main-assistant pump scheme, and the second is big-small pump scheme. The structure and principle of these schemes are introduced. Significantly, a study on the energy conservation and its affecting factors is made. The influence of confluence control section is also be analyzed. Finally, the comparison of other energy conservation methods and new-style steering pump is made to indicate the advantage and shortage of this new-style steering pump.In chapter 3, simulation model of usual vane steering pump is constructed by adopting data of actual steering pump. On this base, simulation model of new-style steering pump is also constructed. Operating characteristic of these two kinds of pump is...