Volume pump motor speed control system consists of electro-hydraulic proportional variable displacement pump and quantitative hydraulic motor, whose displacement hydraulic pump by changing the speed of adjustment is achieved, no throttling, overflow and pressure losses in principle, and has high efficiency, low heat, high speed range, the output torque generated by the pump constant care benefits, which is widely applied to power or heat a strictly limited hydraulic system. Quantitative variable pump motor diagram: variable pump two oil ports are connected and quantitative motor. Variable pump motor principle amount Volume Timing System. Variable pump input speed pn, under certain circumstances mD displacement motor, by changing the variable displacement pump pD, to adjust the output speed of the motor mn purposes. Change the variable pump oil discharge direction, can change the steering motor. According to the installation location can be divided into top-mounted, side-mounted and under-mounted. Mounted on the fuel tank to the pump and other equipment installed in the cover plate has a good rigidity, compact structure, the most widely used. But it can also be cast on the tank shell cooling fins hydraulic pump repair, enhance heat dissipation, which increases the service life of the pump. Side-mounted fuel tank is to be installed next to the hydraulic pumps and other devices tank pump agency, area is great, but the installation and maintenance easy, usually used in large system flow and fuel tank capacity, especially when a tank to more use oil hydraulic pump. Because the side-mounted fuel tank level is higher than the pump suction port, it has a better suction effect. Liyuan hydraulic pump, hydraulic creating crystal factory direct crystal provided by the Jinan Chong Hydraulic Machinery Co., Ltd .. Jinan Jing Chong Hydraulic Machinery Co., Ltd. (www.jnjcyy.com) (www.jnjcyy.com) strong, credible, in Jinan, Shandong mining machinery industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead crystal create hydraulic and you hand into the brilliant, for a better future!