This paper presents a hybridization structure for the flow coupling of a hydraulic hybrid excavator. Multiple energy regeneration systems are used as the energy source for the hydraulic hybrid excavator. The flow-coupling structure is designed on the basis of practical working conditions and then integrated into a 23 ton excavator as the experimental platform to facilitate power system design and control studies. The initial constant-hybrid-ratio control is first examined using a simulation model to obtain the control performances of the main power source and the assistant power source, and the problems are then analysed to derive a two-step optimization. Prototype experiments demonstrate the effectiveness and feasibility of the flow-coupling-based hybridization structure of the hydraulic hybrid excavator. Test results indicate that flow coupling with an optimal control strategy results in an improved control performance and energy efficiency and can eventually increase the overall energy- saving effect to 10.1%.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Research on the design and control strategy for a flow-coupling-based hydraulic hybrid excavator


    Contributors:
    Xiao, Yang (author) / Guan, Cheng (author) / Lai, Xiaoliang (author)


    Publication date :

    2014-12-01


    Size :

    13 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English






    Research on the design and control strategy for a flow-couling-based hydraulic hybrid excavator

    Xiao,Y. / Guan,C. / Lai,X. et al. | Automotive engineering | 2014


    HYDRAULIC EXCAVATOR

    European Patent Office | 2016

    Free access

    Hydraulic Excavator Control System

    Bernhoft, Gerald W. | SAE Technical Papers | 1972