Study of Energy Recycling in Electro-Hydraulic System

Abstract

Environmental and energy issues demand the construction equipment industry to develop more efficient and energy saving machines as they have done to the automotive industry in the last decade. This energy of traditional excavator is lost in the form of heat energy. Heavy earth moving equipments such as excavators, loaders and forklift trucks have unique power train mechanism, thus the focus on important issues like efficiency improvement or energy savings holds great value. Hence, the need of the hour is to develop machinery which can match the necessities and challenges of the ever evolving industry in terms of energy saving management. In this context, hybrid excavators have been ushered in currently. Here system translates the arm/boom/buck’s potential energy into electrical energy and then the electrical energy is stored in a storage device. It develops a set of energy management strategy to make the recoverable energy usage efficiently. The advancements in the field of heavy machineries holds key in future of hybrid excavators. Keywords-hybrid excavator; potential energy recovery; arm; energy saving