Hydraulic depicted below is a typical test equipment designed and manufactured for testing automobile component. This equipment is PC controlled not only for high speed response of hydraulic system but also for speedy and precise evaluation and analysis of test results.

The system consists of a pressure pump, several valves, and an accumulator unit and can be connected to any load process of interest. The accumulator behaves like a battery, which can store a limited amount of energy to be released at a later time. Using the valves, a learning controller can specify whether the load process will be driven directly from the pump, or indirectly from the accumulator. When pumping losses are relatively low, extra power can be generated and temporarily stored in the accumulator and when losses are high, the load process can be supplied from the accumulator unit.