The principle of energy storage device of 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.

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).

How does an engine excavator work?

In conventional excavators, the engine is able to handle all the power needs of an excavator, including turning. In an engine excavator power train system, mechanical rotational energy is transferred from the diesel engine to the hydraulic pump and converted into hydraulic energy.

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.

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.