| Mechanical & Civil Engineering |
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| Output speed and flow of double-acting double-stator multi-pumps and multi-motors |
| De-sheng Wen, Zhi-li Wang, Jun Gao, Yong Zhang, Shi-jun Lv, Tetsuhiro Tsukiji |
| College of Mechanical Engineering, Yanshan University, Qinhuangdao 066004, China, College of Engineering and Applied Science, Sophia University, Tokyo 102-8554, Japan |
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Abstract The primary focus of this study was to investigate a series of novel motors and pumps, based on a new type of structure called double-stator. The double-stator structure can be used as pump or motor just based on the application requirements. A certain amount of pumps or motors can be formed in one shell, and these sub-pumps or sub-motors can work alone or be combined without influence on each other. So this kind of double-stator pump (motor) is called a multi-pump (multi-motor). Through the analysis of multifarious connection modes of the double-acting double-stator multi-pumps and multi-motors, the mathematical expressions of the output flow rate and the rotational speed are acquired. The results indicate that a quantity of different flow rates can be provided by one fixed-displacement multi-pump under the condition of unalterable driven speed by electromotor. Likewise, when supplied by settled input flow, without complex variable mechanism, the functions of double-speed, multiple-speed, and even differential connection can be obtained by employing the use of a double-stator multi-motor. The novel hydraulic transmission is made of such a double-stator multi-pump and multi-motor, and has broad application prospects.
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Received: 14 September 2010
Published: 11 April 2011
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