ass日本风韵熟妇pics男人扒开女人屁屁桶到爽|扒开胸露出奶头亲吻视频|邻居少妇的诱惑|人人妻在线播放|日日摸夜夜摸狠狠摸婷婷|制服 丝袜 人妻|激情熟妇中文字幕|看黄色欧美特一级|日本av人妻系列|高潮对白av,丰满岳妇乱熟妇之荡,日本丰满熟妇乱又伦,日韩欧美一区二区三区在线

In traditional pressure control loops, the power elements use a conventional singleacting pump. When the circuit uses only one pump to provide pressure, the pressure control loop cannot meet the system’s need for multiple flows. The new multipump and multispeed motors were based on the double stator theory and a new type of hydraulic components was developed, which can achieve a pump (motor) multioutput. When the conventional singleacting pump and singleacting motor were used in the conventional hydraulic circuit, the hydraulic circuit at this time was a new type of hydraulic circuit. Due to the special nature of the components, the system can meet the needs of multiple outputs and multiple powers. Since the new hydraulic circuit reduced a lot of control elements, the new hydraulic circuit can save a lot of energy when implementing the same functions as the traditional hydraulic circuit. The experimental results of the new multipump and multispeed motor pressure control circuit showed that with the increase of the system pressure, the measured flow of the double stator pump was decreased; the volumetric efficiency of the double stator pump was decreased with the increase of pressure difference, the mechanical efficiency and total efficiency were increased with it. Although the error was caused by some uncontrollable factors, it verified the feasibility of the circuit and the rationality of hydraulic components. The experimental results laid the foundation for the innovation and development of multipumps (motors) for other hydraulic circuits.