液压混合动力单元关键参数优化研究  

Optimization of Key Parameters on Hydraulic Hybrid Unit

作　　者：郭志敏 董致新 GUO Zhi-min;DONG Zhi-xin(Linde Hydraulics(China)Co.,Ltd.,Weifang 261061,China)

机构地区：[1]林德液压(中国)股份有限公司,山东潍坊261061

出　　处：《液压气动与密封》2021年第12期74-79,共6页Hydraulics Pneumatics & Seals

基　　金：国家重点研发计划(2018YFB2000900)。

摘　　要：针对工程机械柴油机工况剧烈变化导致的燃油效率低下问题,以液压挖掘机为应用平台,设计了采用闭式泵和蓄能器的液压混合动力单元。该单元主要控制目标为平衡主轴功率,使柴油机工作在高效区域,进而降低整机油耗。利用仿真模型对混合动力单元的蓄能器预充压力、蓄能器容积和闭式泵排量等关键参数进行多参数组合批处理分析,通过不同参数组合的油耗结果,得到油耗最佳参数组合。经过参数优化的混合动力单元在不改变原有液压系统的前提下,实现最大节油4.13%。In order to solve the problem of low fuel efficiency of the diesel engine,which caused by the volatility working condition of construction machinery,a hydraulic hybrid unit is designed based on an excavator.This unit includes a closed pump and an accumulator.It stabilizes the engine power,makes the diesel engine working in the high efficiency area,and finally reduces the fuel consumption.The key parameters of the hydraulic hybrid unit are analyzed by multi parameters batch processing of a simulation model,such as accumulator pre charging pressure,accumulator volume and closed pump displacement.Through the fuel consumption results of different combinations,the best parameter combination is obtained.Without changing the original hydraulic system,the optimized hybrid unit achieves the maximum fuel saving of 4.13%.

关 键 词：混合动力 柴油机 油耗 节能 仿真 

分 类 号：TH137[机械工程—机械制造及自动化]