What helps maintain the hydraulic pressure in the ERJ hydraulic system?

In the context of the ERJ hydraulic system, fluid reservoirs play a crucial role in maintaining hydraulic pressure. They serve as storage units for hydraulic fluid, ensuring that there is an adequate supply of fluid available to the hydraulic system. When the hydraulic system operates, fluid is pumped from these reservoirs to the various components that require hydraulic pressure, such as flight controls and landing gear systems.

The reservoirs help mitigate pressure fluctuations and ensure that there is enough fluid to maintain consistent pressure within the system. They also allow for thermal expansion of the fluid, which helps to avoid pressure build-up that could lead to system failures. By providing a stable source of fluid, the reservoirs support the overall functionality and reliability of the hydraulic system, ensuring that it can respond effectively to the demands of the aircraft's operations.