Research on Power Matching Method for Primary and Secondary Conditions of Engine and Hydraulic Torque Converter

doi:10.3901/JME.2023.16.300

Abstract

Abstract: In order to avoid energy waste due to excess power of the loader transmission system, or insufficient power to affect the performance, a power matching method for the primary and secondary working conditions of the engine and the hydraulic torque converter is proposed. Based on the V-type working condition of the loader, the throttle signal, gear signal and brake signal are used as the basis for dividing the 6-segment cycle working condition, and it is subdivided into 11 working condition segments, which are further divided. It is classified into four traction stages: shoveling, lifting, starting, and constant speed. Combining the primary and secondary working conditions of the loader at different cycle stages, the power matching study of the engine and the torque converter is carried out. Using the method of primary and secondary conditions to analyze the power of the hydraulic system and the throttle opening of the engine in different traction stages, and combined with the common working characteristics of the engine and hydraulic torque converter, it is concluded that the engine almost works at the rated power point in the digging and lifting stage. Overloading shall be avoided as far as possible; during the starting and constant speed phases, the output torque point of the engine is relatively low,has the ability to withstand partial load fluctuations, and works as far as possible in the economic fuel range. Furthermore, the model of loader is constructed to compare and verify the primary and secondary working conditions with the variable power control of engine. The analysis method of primary and secondary working conditions of construction machinery based on box diagrams and the classification method of traction working conditions of loaders lay the foundation for the power matching of engine and hydraulic torque converter under different working conditions, and also for the vehicle transmission system. Performance optimization provides a reference.

Key words: loader, transmission system, primary and secondary working conditions, box plot method, power matching

CLC Number:

TH243

ZHANG Zeyu, HUI Jizhuang, ZHANG Haobo, GENG Qi, BU Zhengfeng. Research on Power Matching Method for Primary and Secondary Conditions of Engine and Hydraulic Torque Converter[J]. Journal of Mechanical Engineering, 2023, 59(16): 300-314.

References

[1] 初长祥,马文星. 工程机械液压与液力传动系统.液力卷[M]. 北京:化学工业出版社, 2015. CHU Changxiang, MA Wenxing. Hydraulic and hydraulic transmission system of construction machinery. Hydraulic volume[M]. Beijing:Chemical Industry Press, 2015.
[2] 彭正虎,赵丽梅,吴怀超,等. 基于遗传算法的装载机发动机与液力变矩器匹配优化分析[J]. 机床与液压, 2017, 45(11):126-130. PENG Zhenghu, ZHAO Limei, WU Huaichao, et al. Optimization analysis of matching between loader engine and hydraulic torque converter based on genetic algorithm[J]. Machine Tool & Hydraulics, 2017, 45(11):126-130.
[3] 王振宝,秦四成. 基于典型工况液力变矩器匹配性能的优化[J]. 中南大学学报(自然科学版), 2017, 48(2):331-336. WANG Zhenbao, QIN Sicheng. Optimization of matching performance of hydraulic torque converter based on typical working conditions[J]. Journal of Central South University (Natural Science Edition), 2017, 48(2):331-336.
[4] 马惠臣,刘城,李娟,等. 液力变矩器通用特性及其匹配方法的研究[J]. 北京理工大学学报, 2021, 41(9):1-8. MA Huichen, LIU Cheng, LI Juan, et al. Research on the general characteristics of hydraulic torque converter and its matching method[J]. Journal of Beijing Institute of Technology, 2021, 41(9):1-8.
[5] 刘树成,闫清东,邢庆坤. 车用大功率柴油机与液力变矩器动态匹配影响因素分析[J]. 兵工学报, 2016, 37(3):385-393. LIU Shucheng, YAN Qingdong, XING Qingkun. Analysis of influencing factors on dynamic matching of automotive high-power diesel engine and hydraulic torque converter[J]. Acta Armamentarius, 2016, 37(3):385-393.
[6] 陈凯,吴光强. 基于遗传算法的液力变矩器与发动机匹配的多目标优化[J]. 汽车工程, 2014, 36(5):532-536. CHEN Kai, WU Guangqiang. Multi-objective optimization of torque converter and engine matching based on genetic algorithm[J]. Automotive Engineering, 2014, 36(5):532-536.
[7] 徐礼超,侯学明. 基于典型工况的装载机发动机与液力变矩器匹配[J]. 农业工程学报, 2015, 31(7):80-84. XU Lichao, HOU Xueming. Matching of loader engine and hydraulic torque converter based on typical working conditions[J]. Transactions of the Chinese Society of Agricultural Engineering, 2015, 31(7):80-84.
[8] MA Wenxing, XU Wen, CAI Wei, et al. Variable-capacity matching of continuously variable-capacity double-impeller torque converter applied to a loader[J]. Advances in Mechanical Engineering, 2017, 9(2):1-11.
[9] 张泽宇,惠记庄,卜正锋,等. 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. ZHANG Zeyu, HUI Jizhuang, BU Zhengfeng, et al. Power matching and speed induction control of torque converter and engine[J]. Mechanical Science and Technology, 2018, 37(1):55-62.
[10] 王振宝, 秦四成. 装载机液力变矩器的动态特性分析[J]. 华南理工大学学报(自然科学版), 2016, 44(7):41-46. WANG Zhenbao, QIN Sicheng. Analysis of dynamic characteristics of loader hydraulic torque converter[J]. Journal of South China University of Technology (Natural Science Edition), 2016, 44(7):41-46.
[11] 李文嘉,王安麟,李晓田,等. 循环工况下变矩器叶片角设计空间的性能优化[J]. 哈尔滨工程大学学报, 2017, 38(11):1781-1785. LI Wenjia, WANG Anlin, LI Xiaotian, et al. Performance optimization of torque converter blade angle design space under cyclic conditions[J]. Journal of Harbin Engineering University, 2017, 38(11):1781-1785.
[12] 常绿. 基于性能评价网状图的装载机发动机与液力变矩器匹配优化[J]. 农业工程学报, 2012, 28(1):50-54. CHANG Lü. Matching optimization of loader engine and hydraulic torque converter based on performance evaluation network[J]. Transactions of the Chinese Society of Agricultural Engineering, 2012, 28(1):50-54.
[13] 王安麟,章明犬,李文嘉,等. 采用装载机整机实验的液力变矩器性能匹配指标[J]. 西安交通大学学报, 2015, 49(10):54-60. WANG Anlin, ZHANG Mingquan, LI Wenjia, et al. Performance matching index of hydraulic torque converter using the whole loader experiment[J]. Journal of Xi'an Jiaotong University, 2015, 49(10):54-60.
[14] 常绿,徐礼超,吕猛,等. 基于典型工况试验的装载机循环工况构建[J]. 农业工程学报, 2018, 34(1):63-69. CHANG Lü, XU Lichao, LÜ Meng, et al. Construction of loader cycle based on typical condition test[J]. Journal of Agricultural Engineering, 2018, 34(1):63-69.
[15] 马相明,孙霞,张强. 轮式装载机典型作业工况构建与分析[J]. 山东大学学报(工学版), 2015, 45(5):82-87. MA Xiangming, SUN Xia, ZHANG Qiang. Construction and analysis of typical working conditions of wheel loader[J]. Journal of Shandong University (Engineering Edition), 2015, 45(5):82-87.
[16] 邹乃威,黄鸿岛,章二平,等. 面向作业终端动力需求的装载机循环工况的创建[J]. 农业工程学报, 2015, 31(1):78-85. ZOU Naiwei, HUANG Hongdao, ZHANG Erping, et al. Creation of loader cycle conditions oriented to the power demand of the operation terminal[J]. Transactions of the Chinese Society of Agricultural Engineering, 2015, 31(1):78-85.
[17] 黄杰,王东,王新晴,等. 液压挖掘机作业循环状态智能识别方法[J]. 浙江大学学报(工学版), 2019, 53(9):1663-1673. HUANG Jie, WANG Dong, WANG Xinqing, et al. Intelligent recognition method of operating cycle status of hydraulic excavator[J]. Journal of Zhejiang University (Engineering Science Edition), 2019, 53(9):1663-1673.
[18] 朱建新,沈东羽,吴钪. 基于激光点云的智能挖掘机目标识别[J]. 计算机工程, 2017, 43(1):297-302. ZHU Jianxin, SHEN Dongyu, WU Kang. Intelligent excavator target recognition based on laser point cloud[J]. Computer Engineering, 2017, 43(1):297-302.
[19] 王少杰,侯亮,方奕凯,等. 考虑产品运行大数据的装载机变速箱优化设计[J]. 机械工程学报, 2018, 54(22):218-232. WANG Shaojie, HOU Liang, FANG Yikai, et al. Optimal design of loader gearbox considering product operation big data[J]. Journal of Mechanical Engineering, 2018, 54(22):218-232.
[20] 张泽宇,惠记庄,武琳琳,等. 一种装载机用发动机与液力变矩器的功率匹配方法:中国, CN109990090B[P]. 2020-07-10. ZHANG Zeyu, HUI Jizhuang, WU Linlin, et al. A power matching method for loader engines and hydraulic torque converters:China, CN109990090B[P]. 2020-07-10.
[21] ZHANG Zeyu, HUI Jizhuang, SHI Ze, et al. Cycle condition identification of loader based on optimized KNN algorithm[J]. IEEE Access, 2020(8):69532- 69542.
[22] 张泽宇,惠记庄,石泽. 小波包最优基分解树的降噪滤波方法研究[J]. 机械科学与技术, 2020, 39(1):28-34. ZHANG Zeyu, HUI Jizhuang, SHI Ze. Research on denoising filtering method of wavelet packet optimal basis decomposition tree[J]. Mechanical Science and Technology, 2020, 39(1):28-34.
[23] 张泽宇,卜正锋,惠记庄,等. 牵引工况下大功率液力变矩器总成热特性研究[J]. 长安大学学报(自然科学版), 2018, 38(3):116-126. ZHANG Zeyu, BU Zhengfeng, HUI Jizhuang, et al. Thermal characteristics of high-power hydraulic torque converter assembly under traction conditions[J]. Journal of Chang'an University (Natural Science Edition), 2018, 38(3):116-126.
[24] 王松林. 轮式装载机液力传动系统节能研究[D]. 长春:吉林大学, 2015. WANG Songlin. Research on fuel-saving of hydrodynamic transmission system for wheel loader[D]. Changchun:Jilin University, 2015.