摘要
针对负流量控制下的某中型液压挖掘机结构特点,分析其控制及工作原理,在此基础上采用并联式混合动力系统作为挖掘机的动力源,加入了动臂势能回收装置,并以此为结构建立了整机的仿真模型。仿真结果表明:负流量控制下的并联式混合动力挖掘机能够使发动机稳定在高效区工作,并降低了发动机的装机功率,与普通负流量挖掘机相比油耗下降了12.9%,提高了整机的燃油效率。
for the structural characteristics ot the ordinary medmm-sized hydraulic excavator under the negative flow control, the control and working principle were analyzed. On this basis, the parallel hybrid system was adopted as the power source of the excava- tor, the potential recovery system of the boom Was joined. According to this structure, the simulation model of the whole machine was established. The simulation results show that the parallel hybrid excavator under the negative flow control is able to make the engine to work in the high efficient area stably and reduce the installed rated power of the engine ; compared with the ordinary negative flow exca- vator, the fuel consumption decreases by 12. 9%, the overall fuel efficiency is improved.
出处
《机床与液压》
北大核心
2013年第23期125-127,131,共4页
Machine Tool & Hydraulics
关键词
液压挖掘机
负流量
混合动力
节能
Hydraulic excavator
Negative flow
Hybrid
Energy saving
