Lin Tianliang

TL;DR: In this paper, a compound energy regeneration system (ERS) that combines the advantages of an electric accumulator and a hydraulic accumulator was proposed to improve the fuel efficiency of hybrid hydraulic excavators.

TL;DR: In this paper, the authors analyzed the proportion of regeneration energy for each actuator and studied the special working style of the boom energy regeneration system (ERS) in a 20-t HE.

TL;DR: Key technologies, like variable speed control of the electric motor (EM), hydroelectric EM driving, new hydroelectric actuator, power supply, and energy recovery, are analyzed in depth and the difficulties of CMs to realize the electrification are compared.

TL;DR: This paper proposes a novel potential energy regeneration system (PERS) using a hydraulic accumulator and a valve–motor–generator for a hybrid hydraulic excavator (HHE) and demonstrates that the dynamic performance of the PERS is close to that of a throttle-governing system.

TL;DR: A load sensing system based on displacement adaptive and variable speed control is proposed for electric excavator to extend the flow matching range of power train system and satisfy the flow demand under different load conditions and the results show that the system and control strategy can improve the control performance effectively.