Which item is NOT a function of accumulators?

• A. Energy storage
• B. Fluid dispensing
• C. Pulsation absorption/shock cushioning
• D. Maintaining pressure

Answer: (B)

Accumulation in hydraulic systems centers on storing energy and smoothing delivery. An accumulator uses a gas charge or a spring to compress fluid, so it can release that stored energy when demand spikes, and it also helps dampen pulsations and cushion shocks in the line. It contributes to maintaining system pressure during transient conditions, such as brief drops or surges in pump flow. It does not dispense or meter hydraulic fluid to the actuator; that role belongs to the pump or metering devices. Therefore, the option describing fluid dispensing is not a function of accumulators.