机械科学与技术2018，Vol.37Issue(1)：55-62,8.DOI:10.13433/j.cnki.1003-8728.2018.0109
液力变矩器与发动机的功率匹配与转速感应控制
Power Matching and Speed Sensing Control between Hydraulic Torque Converter and Engine
摘要
Abstract
In order to improve the performance of a loader and reduce its fuel consumption,the power matching and speed sensing control between the hydraulic torque converter and the engine was researched.Based on the loader's operating mode,the best working curve of 154 kW engine and the main operating point of 340 mm hydraulic torque converter were selected for power matching.According to the operating condition identification and the control principle of the loader,the speed sensing control of the engine was carried out.Taking the 5-ton loader as an example,the model of the speed sensing control system based on condition identification was established and the calculation results were compared with the traditional method.The results show that:in the excavation condition,the output torque of the loader increases by 25.6％ and the fuel consumption reduces by 21.6％.In the unloading condition,the fuel consumption decreases from 32 g/h to 8.5 g/h.In the driving condition,the efficient economic mode limites the output power by 4％,reduces fuel consumption by 7.5％.In the most economical mode,the power of engine limites by 30％,and the fuel consumption reduced by 36.8％.关键词
工程机械/功率匹配/转速感应控制/装载机/工况识别Key words
construction machinery/power matching/speed sensing control/loader/operating condition identification分类
交通工程引用本文复制引用
张泽宇,惠记庄,卜正锋,丁凯,谷立臣..液力变矩器与发动机的功率匹配与转速感应控制[J].机械科学与技术,2018,37(1):55-62,8.基金项目
国家科技支撑计划项目(2015BAF07B02)、中央高校创新团队项目(310825153403)及中央高校优秀博士生计划项目(310825175010)资助 （2015BAF07B02）
