How does an excavator store energy

Can a hydraulic excavator save energy?

Then, a hydraulic excavator energy saving system based on three-chamber accumulator is proposed, which can store and reuse the energy loss from throttling and overflow of the hydraulic system without changing the hydraulic system of the excavator.

What is a hydraulic excavator energy saving system?

In order to address these issues, a hydraulic excavator energy saving system based on a three-chamber accumulator is proposed. Firstly, the conventional piston-type hydraulic accumulator is integrated with the hydraulic cylinder to form a three-chamber accumulator, which has a pressurizing function during energy storage.

What are hydraulic energy recovery methods for excavators?

Currently, the mainstream hydraulic energy recovery methods for excavators mainly include the electric energy regeneration system (EERS) and the hydraulic energy regeneration system (HERS).

How does an excavator work?

Throughout this process, the engine of the excavator remains in idle mode. In both modes, the oil in the rodless chamber of the boom cylinder is exchanged with the oil chamber in the TCA, so it can be assumed that the flow rate into the TCA is equal to the flow rate in the rodless chamber of the boom cylinder.

Can a three-chamber accumulator save energy in excavator boom?

This study introduces a novel energy saving system for recovering and reusing the potential energy of excavator boom. The system is based on three-chamber accumulator (TCA) and offers high energy recovery efficiency while maintaining excellent boom speed control performance.

What happens when a hydraulic excavator boom drops?

As the boom of a hydraulic excavator drops, the potential energy accumulated during the lifting process is converted into thermal energy and dissipated through the throttling action of the hydraulic valve, leading to excessive fuel consumption and serious energy waste.