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.

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 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).

What power source does an electric excavator use?

It is basically assumed that the fuel cell, which is the main power sources of the electric excavator, the battery, and the super capacitor of the energy regeneration system, can cover the power of the existing engine excavator. In particular, the super capacitor is responsible for powering the upper body of the excavator.

Do electric excavators have a super-capacitor?

For excavators, research and development are being done in a similar direction. Some excavators are equipped with a super-capacitor, which regenerates the upper braking energy to increase the efficiency of the engine. This paper deals with the energy management of environmentally friendly electric excavators using super capacitors.

What is the power train of electric excavator?

Power train of electric excavator including regeneration system It is basically assumed that the fuel cell, which is the main power sources of the electric excavator, the battery, and the super capacitor of the energy regeneration system, can cover the power of the existing engine excavator.