CAJ | 학술논문

首先分析了工程机械各执行机构的可回收能量分布以及可回收工况的特性。针对传统工程机械不具备能量储存单元的特点，分析了流量再生回路的工作原理和技术瓶颈。分析了两种剧烈工况和平缓工况时的电气式能量回收方案的工作原理、关键技术以及和汽车领域能量回收技术的异同点。最后讨论了基于液压蓄能器的不同能量回收再利用的能量回收方案的典型结构和难点。
수선분석료공정궤계각집행궤구적가회수능량분포이급가회수공황적특성。침대전통공정궤계불구비능량저존단원적특점，분석료류량재생회로적공작원리화기술병경。분석료량충극렬공황화평완공황시적전기식능량회수방안적공작원리、관건기술이급화기차영역능량회수기술적이동점。최후토론료기우액압축능기적불동능량회수재이용적능량회수방안적전형결구화난점。
Duo to the energy crisis, the improvement on the efficiency of the hydraulic excavator is highly demanded. The potential energy and kinetic energy at the times of lowering and slewing stoppage of the excavator are also dissi-pated as heat. So it is required to make maximum use of regenerative energy for further improvement of fuel con-sumption. This paper first analyzes the proportion of regeneration energy for each actuator, the energy saving effects and the special working style of a 20 t hydraulic excavator. Then, two energy regeneration systems without the ener-gy accumulator in a hydraulic excavator are introduced. With the batteries or the capacitors in an electric hybrid pow-er system, methods that how to regenerate the potential energy of the boom and the braking energy of the swing are proposed. And also, the difference between the hybrid powered automobile vehicle and the hybrid powered excava-tor is studied. At last, the paper discusses the hydraulic accumulator energy regeneration system based on the tradi-tional hydraulic excavator or the hydraulic-hybrid hydraulic excavator. And the challenges of the energy regenera-tion system in hydraulic hybrid hydraulic excavator facing the researchers are put forwards.