Hydraulic pile drivers use a twin-cylinder diesel engine for power. The energy is converted and output as the impact energy required for construction through components such as hydraulic pumps and hydraulic motors, providing significant impact force to the hydraulic pile driver equipment and greatly improving piling efficiency. The increased impact force can adapt to basic construction in all types of soil layers. However, it is important to note that energy loss is inevitable during mechanical use. To achieve higher economic efficiency in construction, it is essential to understand energy loss.

The flow of liquid causes energy loss, part of which is necessary for the hydraulic system of the hydraulic pile driver to achieve piling control functions, such as pressure loss at the orifices of throttles and directional valves. Another part is unnecessary additional loss, such as pressure loss caused by frictional resistance of the pipe wall when liquid flows through long straight pipes in the hydraulic pile driver. However, it is difficult to completely separate the two. Transmission efficiency takes into account the total pressure loss of the two types during fluid transmission.

Energy Conversion Loss: The loss of energy conversion components in the hydraulic system, including mechanical friction loss, pressure loss, and volume loss. For example, a hydraulic pump converts the mechanical energy input by the prime mover into hydraulic energy output. During energy conversion, internal leakage of the pump causes mechanical friction loss on the shaft and volume loss.

Energy Transmission Loss: The loss caused by the transmission of hydraulic working fluid throughout the hydraulic system, known as flow loss. This is determined not only by the structure of control components such as hydraulic cylinders, filters, and coolers, but also by the type and arrangement of auxiliary components, the connection methods between components, the types, quantities, and sizes of joints, as well as the pipelines.

Understanding these losses and managing them effectively can significantly enhance the operational efficiency and economic performance of hydraulic pile drivers in construction projects.