More importantly, constant pressure pump is: under pressure unchanged more energy savings. Constant power pump is able to change according to the load change velocity, but also require major changes for this load speed can change the situation. Under 3) In general, the choice of the constant power stationary industrial hydraulic few cases, most mobile machinery (construction machinery) engine power, in order to take full advantage of the power of the variable pump selection refinement ,, constant power situation pump more. Of course, the big thing in the world, can not be generalized. 4) For a repeated cycle, or the process of random operations, the pressure and flow parameters has a relatively large difference between the two systems, people tend to adopt "a key to open a lock" model flexibility. Flow pump is mainly used for construction machinery such devices on one engine, to take full advantage of its power. The hydraulic system can be large at low flow variable pump repair phone ,, when high pressure low flow. This is similar to the upper surface of the constant pressure pump, it is not. Constant power pump when the pressure flow changes, follow constant power, and constant pressure pump before it is set in the value of the variable pump care does not meet the quantitative ,, is the maximum displacement pump, start constant power inflection point does not exist. And after entering the constant conditions, in principle, while maintaining the pressure needed to provide the flow of the system. Variable displacement pump variable pump care _ _ Jinan Jing Jing Chong Chong by hydraulic Hydraulic Machinery Limited. 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 continuous improvement to create innovative ideas will lead crystal hydraulic and you hand into the brilliant, for a better future!