About the control method of piston pump 

Generally speaking, hydraulic pumps can be functionally coupled with multiple types of controls to achieve the assemblies that need to be used. Rather, the method through which the requirements for different types of use are carried out does not require additional motors.

When using a hydraulic system, the control method is just one part of the pump adoption process. In the vast majority of cases, the pump will also run an existing system configuration that has been developed to suit multiple types of common uses. Use the flow rate and operating pressure to correspond to the specification type, and use the nature of the control to mention the control, and stabilize the power input within the limits that can be used.

When you want to replace the pump, it is possible to replace the pump without disassembling it, thus saving time and increasing the speed of the axial piston pump. Flow rate, comparative working pressure and control options are however important in finding the suitability and rate of the hydraulic pump in use. The cylinder to the rotary swashplate to adjust the pump displacement is because the pressure in the output line is close to the set value.

In some cases, there will be the need to operate the pressure compensator control in combination with load sensing or displacement limiter depending on the use. Running several pumps hydraulic system is also possible to have different types of control types on each pump, which in turn is additional motor by the specific method different types of use requirements. When using a hydraulic system, the better control method is just one part of the pump adoption process. In most cases, the pump will also run an existing system configuration that has been developed to suit multiple types of common uses.

Using the flow rate and working pressure to allow the corresponding specification model, and using the control nature to achieve better control and stabilize the power entry within the limits that can be used, it is possible to reduce the price of the existing model to flow requirements, but this would also be a compromise that is not acceptable in this case. Therefore, designers set out to create a new model, PVV-355, that would allow users to meet the requirements of the specifications. This new model was created to open up the range of the original model and has already been made available for general use. Although most hydraulic applications are related to pressurized mineral oils, there is an increasing demand for systems running other fluids, usually low viscosity fluids with high water content and fire resistant fluids. In order to be able to avoid such problems, it is necessary to take power regulation of the pump so that it can handle many loads within the power range of the prime mover.

In this study, we applied a constant power control regulator to the VDAPP so that the angle of the swashplate automatically decreases according to the increase in load pressure. If you are using a vane pump or gear pump, in most cases the axial piston pump control is relatively simple. The pump has been started (is running) or unloaded (much of the flow goes back to the tank). This is still mainly a solid displacement device, so that the flow originates from the introduction of RPM, and vice versa the flow remains constant. This is called an open loop system. After completing the job, the flow is opened to the tank. In the closed-loop system, after completing the work, the axial piston pump flow returns to the pump. Closed-loop pumps also provide other but different control options. Electronic regulator has made research and commercialization. However, the mechanical regulator is mainly applicable to the industrial industry, this is due to the main part of the electronic regulator used to proportional pressure reducing valve life than the mechanical regulator is poor.

They are only effective in case of problems. Because of the relatively good mechanical regulator system is suitable for construction equipment and combat vehicles that are used in harsh conditions for a long time. On the other hand, the primary problem in the development of mechanical regulators is the selection of technical parameters for each component. If the technical parameters are not selected properly, it may cause performance characteristics such as irregular discharge currents in the constant power region and cut-off region.