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CONSTANT WORK-POINT CONTROL FOR PARALLEL HYBRID SYSTEM WITH CAPACITOR ACCUMULATOR IN HYDRAULIC EXCAVATOR 被引量:4
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作者 ZHANG Yanting WANG Qingfeng XIAO Qing FU Qiang 《Chinese Journal of Mechanical Engineering》 SCIE EI CAS CSCD 2006年第4期505-508,共4页
Limitations of various accumulators in hybrid hydraulic excavator are analyzed. A program using capacitor as the accumulator based on constant work-point control is put forward. A simulating experimental system of hyb... Limitations of various accumulators in hybrid hydraulic excavator are analyzed. A program using capacitor as the accumulator based on constant work-point control is put forward. A simulating experimental system of hybrid construction machinery is established, and experimental study on constant work-point control for parallel hybrid system with capacitor accumulator is carried out using the pressure and flow rate derived from boom cylinder of hydraulic excavator in actual work as the simulating loads. A program of double work-point control is proposed and proved by further experiments. 展开更多
关键词 Hybrid hydraulic excavator Capacitor accumulator Constant work-point control Double work-point control
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Study on an Energy-saving System for a Hydraulic Excavator′s Boom
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作者 ZHANG Shu-zhong DENG Bin KE Jian 《International Journal of Plant Engineering and Management》 2010年第2期121-124,共4页
To improve the energy efficiency of a hydraulic boom, a new energy-saving system adopting a hydraulic accumulator is proposed. First, the principle of the system is presented. Then, the dynamic simulation is intro- du... To improve the energy efficiency of a hydraulic boom, a new energy-saving system adopting a hydraulic accumulator is proposed. First, the principle of the system is presented. Then, the dynamic simulation is intro- duced. Finally, the conclusions are given based on the analysis of simulation data. In Summary, the innovative energy-saving system combines flow regeneration and potential energy recovery, runs steadily and comfortably, saves energy remarkably and has good potential for improving energy utilization of a hydraulic excavator. 展开更多
关键词 hydraulic excavator hydraulic accumulator flow regeneration potential energy recovery
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