Electro-hydraulic proportional piston pumps usually contain a pressure compensation mechanism to maintain a stable output pressure regardless of load changes or system changes. A pressure compensation mechanism helps ensure that the pump delivers consistent flow and pressure to the hydraulic system. A common type of pressure compensating mechanism used in electro-hydraulic proportional piston pumps is known as a pressure compensator or pressure control valve. The valve is usually integrated into the pump assembly and works in conjunction with the pump's control electronics. Here is a simple explanation of how the pressure compensation mechanism works: 1. Pressure feedback: The electro-hydraulic proportional piston pump is equipped with a pressure sensor or transducer to measure the system pressure downstream of the pump. 2. Control electronics: The pressure sensor forwards the measured pressure information to the pump's control electronics, which continuously monitors the system pressure. 3. Control signal: According to the required set pressure and measured pressure, the control electronic device generates a control signal to adjust the displacement or stroke length of the pump. 90-R-130-KA-5-NN-80-L-3-C8-H-03-GBA-42-42-24 90R130KA5NN80L3C8H03GBA424224 90R130-KA-5-NN-80-L-3-F1-F-03-GBA-35-35-24 90R130KA5NN80L3F1F03GBA353524 90-R-130-KA-5-NN-80-L-3-F1-F-03-GBA-35-35-24 90R130KA5NN80L3F1F03GBA353524 90R130-KA-5-NN-80-L-3-F1-F-04-GBA-23-23-24 90R130KA5NN80L3F1F04GBA232324 90-R-130-KA-5-NN-80-L-3-F1-F-04-GBA-23-23-24 90R130KA5NN80L3F1F04GBA232324 90R130-KA-5-NN-80-L-3-F1-H-03-GBA-29-29-24 90R130KA5NN80L3F1H03GBA292924 90-R-130-KA-5-NN-80-L-3-F1-H-03-GBA-29-29-24 90R130KA5NN80L3F1H03GBA292924 90R130-KA-5-NN-80-L-3-F1-H-03-GBA-42-42-24 90R130KA5NN80L3F1H03GBA424224 90-R-130-KA-5-NN-80-L-3-F1-H-03-GBA-42-42-24 90R130KA5NN80L3F1H03GBA424224 90R130-KA-5-NN-80-L-3-F1-H-05-GBA-35-35-24 90R130KA5NN80L3F1H05GBA353524 90-R-130-KA-5-NN-80-L-3-F1-H-05-GBA-35-35-24 90R130KA5NN80L3F1H05GBA353524 90R130-KA-5-NN-80-L-3-F1-H-06-GBA-38-38-20 90R130KA5NN80L3F1H06GBA383820 90-R-130-KA-5-NN-80-L-3-F1-H-06-GBA-38-38-20 90R130KA5NN80L3F1H06GBA383820 90R130-KA-5-NN-80-L-4-C8-H-00-GBA-32-32-24 90R130KA5NN80L4C8H00GBA323224 90-R-130-KA-5-NN-80-L-4-C8-H-00-GBA-32-32-24 90R130KA5NN80L4C8H00GBA323224 90R130-KA-5-NN-80-L-4-C8-H-03-GBA-35-35-24 90R130KA5NN80L4C8H03GBA353524 90-R-130-KA-5-NN-80-L-4-C8-H-03-GBA-35-35-24 90R130KA5NN80L4C8H03GBA353524 90R130-KA-5-NN-80-L-4-C8-H-03-GBA-42-42-24 90R130KA5NN80L4C8H03GBA424224 90-R-130-KA-5-NN-80-L-4-C8-H-03-GBA-42-42-24 90R130KA5NN80L4C8H03GBA424224 90R130-KA-5-NN-80-L-4-F1-F-03-GBA-20-20-20 90R130KA5NN80L4F1F03GBA202020 4. Feedback loop: The control signal is sent to the proportional solenoid valve to control the flow of hydraulic oil to the piston chamber. A solenoid valve regulates the flow to regulate the output of the pump. 5. Pressure compensation: If the system pressure is lower than the required set pressure, the control electronics will increase the control signal to increase the displacement of the pump, resulting in higher output flow and pressure. Conversely, if the system pressure exceeds the set pressure, the control signal will decrease, thereby reducing the displacement of the pump, thereby reducing the output flow and pressure. 6. Continuous adjustment: The control electronics continuously monitors the system pressure and quickly adjusts the control signal as needed to maintain the desired set pressure. 7. Response time: The control electronic components and solenoid valve work together to respond quickly to changes in system pressure. The control loop adjusts the pump's displacement or stroke length in real time, allowing the pressure compensation mechanism to react quickly to load changes or other disturbances. 8. Proportional control: The electro-hydraulic proportional plunger pump can precisely control the output pressure of the pump. Control electronics and proportional solenoid valves allow for proportional control, which means that the displacement or flow of the pump can be precisely adjusted in proportion to the control signal. This allows fine-tuning of system pressure and facilitates precise control of hydraulic actuators or other components. 90-R-130-KA-5-NN-80-L-4-F1-F-03-GBA-20-20-20 90R130KA5NN80L4F1F03GBA202020 90R130-KA-5-NN-80-L-4-F1-H-00-GBA-14-14-20 90R130KA5NN80L4F1H00GBA141420 90-R-130-KA-5-NN-80-L-4-F1-H-00-GBA-14-14-20 90R130KA5NN80L4F1H00GBA141420 90R130-KA-5-NN-80-L-4-F1-H-00-GBA-14-14-24 90R130KA5NN80L4F1H00GBA141424 90-R-130-KA-5-NN-80-L-4-F1-H-00-GBA-14-14-24 90R130KA5NN80L4F1H00GBA141424 90R130-KA-5-NN-80-L-4-F1-H-03-GBA-14-35-24 90R130KA5NN80L4F1H03GBA143524 90-R-130-KA-5-NN-80-L-4-F1-H-03-GBA-14-35-24 90R130KA5NN80L4F1H03GBA143524 90R130-KA-5-NN-80-L-4-F1-H-04-GBA-38-14-24 90R130KA5NN80L4F1H04GBA381424 90-R-130-KA-5-NN-80-L-4-F1-H-04-GBA-38-14-24 90R130KA5NN80L4F1H04GBA381424 90R130-KA-5-NN-80-L-4-F1-H-04-GBA-42-42-24 90R130KA5NN80L4F1H04GBA424224 90-R-130-KA-5-NN-80-L-4-F1-H-04-GBA-42-42-24 90R130KA5NN80L4F1H04GBA424224 90R130-KA-5-NN-80-P-3-C8-F-03-GBA-35-35-24 90R130KA5NN80P3C8F03GBA353524 90-R-130-KA-5-NN-80-P-3-C8-F-03-GBA-35-35-24 90R130KA5NN80P3C8F03GBA353524 90R130-KA-5-NN-80-P-3-C8-F-03-GBA-38-38-24 90R130KA5NN80P3C8F03GBA383824 90-R-130-KA-5-NN-80-P-3-C8-F-03-GBA-38-38-24 90R130KA5NN80P3C8F03GBA383824 90R130-KA-5-NN-80-P-3-C8-H-00-GBA-42-42-24 90R130KA5NN80P3C8H00GBA424224 90-R-130-KA-5-NN-80-P-3-C8-H-00-GBA-42-42-24 90R130KA5NN80P3C8H00GBA424224 90R130-KA-5-NN-80-P-3-C8-H-03-GBA-17-17-24 90R130KA5NN80P3C8H03GBA171724 90-R-130-KA-5-NN-80-P-3-C8-H-03-GBA-17-17-24 90R130KA5NN80P3C8H03GBA171724 90R130-KA-5-NN-80-P-3-C8-H-03-GBA-29-29-24 90R130KA5NN80P3C8H03GBA292924 9. Stability and Efficiency: The pressure compensation mechanism helps maintain system stability by ensuring a constant pressure level, which is critical for consistent and reliable operation. By regulating pump displacement according to system pressure, this mechanism prevents pressure fluctuations that can affect hydraulic component performance. In addition, when the system pressure reaches the desired level, the pressure compensation mechanism can reduce unnecessary power consumption, thereby improving energy efficiency. 10. Additional functions: Some electro-hydraulic proportional piston pumps may include additional functions to enhance their pressure compensation capabilities. For example, they may incorporate integral feedback control algorithms to optimize the response of pressure compensation mechanisms, minimize overshoot, and further improve system stability. 11. Load sensing: Some electro-hydraulic proportional plunger pumps use a combination of a load sensing mechanism and a pressure compensation mechanism. Load sensing allows the pump to adjust its output pressure according to the actual needs of the hydraulic system. The pump adjusts its displacement to meet the required flow and pressure while minimizing energy consumption to sense load pressure. 12. Pressure limitation: In addition to pressure compensation, the electro-hydraulic proportional piston pump can also have a pressure limitation function. This feature ensures that the pump does not exceed a preset maximum pressure limit, protecting the system from potential damage or overload. Pressure limiting mechanisms typically include a pressure relief valve or circuit that diverts excess fluid back to the pump inlet or tank. 90-R-130-KA-5-NN-80-P-3-C8-H-03-GBA-29-29-24 90R130KA5NN80P3C8H03GBA292924 90-R-130-KA-5-NN-80-P-3-C8-H-03-GBA-42-42-20 90R130KA5NN80P3C8H03GBA424220 90R130-KA-5-NN-80-P-3-C8-H-03-GBA-42-42-24 90R130KA5NN80P3C8H03GBA424224 90-R-130-KA-5-NN-80-P-3-C8-H-03-GBA-42-42-24 90R130KA5NN80P3C8H03GBA424224 90-R-130-KA-5-NN-80-P-3-F1-H-03-GBA-30-30-24 90R130KA5NN80P3F1H03GBA303024 90R130-KA-5-NN-80-P-3-F1-H-03-GBA-38-38-24 90R130KA5NN80P3F1H03GBA383824 90-R-130-KA-5-NN-80-P-3-F1-H-03-GBA-38-38-24 90R130KA5NN80P3F1H03GBA383824 90R130-KA-5-NN-80-P-4-C8-F-04-GBA-38-38-20 90R130KA5NN80P4C8F04GBA383820 90-R-130-KA-5-NN-80-P-4-C8-F-04-GBA-38-38-20 90R130KA5NN80P4C8F04GBA383820 90-R-130-KA-5-NN-80-P-4-F1-F-03-GBA-32-14-30 90R130KA5NN80P4F1F03GBA321430 90R130-KA-5-NN-80-P-4-F1-H-00-GBA-20-20-20 90R130KA5NN80P4F1H00GBA202020 90-R-130-KA-5-NN-80-P-4-F1-H-00-GBA-20-20-20 90R130KA5NN80P4F1H00GBA202020 90R130-KA-5-NN-80-R-3-C8-F-03-GBA-35-35-24 90R130KA5NN80R3C8F03GBA353524 90-R-130-KA-5-NN-80-R-3-C8-F-03-GBA-35-35-24 90R130KA5NN80R3C8F03GBA353524 90R130-KA-5-NN-80-R-3-C8-H-03-GBA-30-14-28 90R130KA5NN80R3C8H03GBA301428 90-R-130-KA-5-NN-80-R-3-C8-H-03-GBA-30-14-28 90R130KA5NN80R3C8H03GBA301428 90R130-KA-5-NN-80-R-3-C8-H-03-GBA-35-35-32 90R130KA5NN80R3C8H03GBA353532 90-R-130-KA-5-NN-80-R-3-C8-H-03-GBA-35-35-32 90R130KA5NN80R3C8H03GBA353532 90R130-KA-5-NN-80-R-3-C8-H-03-GBA-42-42-20 90R130KA5NN80R3C8H03GBA424220 90-R-130-KA-5-NN-80-R-3-C8-H-03-GBA-42-42-20 90R130KA5NN80R3C8H03GBA424220 13. Closed-loop control: The advanced electro-hydraulic proportional plunger pump can utilize the closed-loop control system for pressure compensation. These systems employ feedback from multiple sensors, including pressure sensors, displacement sensors, and flow sensors. The control system continuously compares the desired set pressure to the measured value and adjusts the pump displacement accordingly, providing highly accurate and responsive pressure control. 14. Integrated electronics: Many modern electro-hydraulic proportional piston pumps have integrated electronics, combining the pump and control system into one unit. This integration simplifies installation and operation and facilitates communication with external control systems through various interfaces such as analog signals, fieldbus protocols or Ethernet. 15. Application flexibility: The pressure compensation mechanism of the electro-hydraulic proportional plunger pump makes it suitable for a wide range of applications. They are commonly used in industrial machinery, mobile equipment, and automation systems that require precise control of pressure and flow, such as injection molding machines, presses, hydraulic test stands, and hydraulic power units. It is worth noting that electrohydraulic proportional piston pumps can have various additional features, control options and specific operating parameters, depending on the manufacturer and model. Therefore, it is important to consult the pump's documentation or contact the manufacturer for details on a specific pump's pressure compensation mechanism and its capabilities.