Which device is employed to maintain consistent pressure in a hydraulic system?

The accumulator is a crucial component in a hydraulic system, designed to maintain consistent pressure. It achieves this by storing hydraulic fluid under pressure, allowing it to release or absorb fluid as needed to regulate pressure fluctuations in the system. This helps to ensure that hydraulic components receive a steady supply of fluid at the desired pressure, which is essential for proper operation and performance.

By acting as a buffer, the accumulator can also mitigate the effects of sudden changes in demand, such as during rapid motion of hydraulic actuators. It plays a vital role in enhancing the efficiency and reliability of the hydraulic system, making it integral to operational stability.

Other components listed, such as the reservoir, filter, and pump, serve different functions in the hydraulic system. The reservoir holds the hydraulic fluid, the filter ensures that the fluid is clean and free from contaminants, and the pump generates the flow necessary to circulate the hydraulic fluid. However, none of these components specifically regulate or maintain consistent pressure like the accumulator does.