What is the primary purpose of a pressurized reservoir in hydraulic systems?

The primary purpose of a pressurized reservoir in hydraulic systems is to maintain positive pressure for hydraulic pump suction. In hydraulic systems, having a constant, positive pressure in the reservoir is essential because it ensures that the hydraulic pump can draw fluid efficiently. This helps maintain the system's operational stability, as the pump requires a consistent supply of fluid to function correctly without cavitation—an occurrence where vapor bubbles form in the hydraulic fluid due to low pressure, which can lead to pump damage and system inefficiency.

While other components of the hydraulic system serve specific functions, the pressurized reservoir is crucial for providing the necessary suction pressure that supports pump operation. Consequently, the maintenance of pressure influences overall system performance, enhancing reliability and responsiveness during operation.