马相明，张强，闫云乔

（1.山东大学能源与动力工程学院，济南，250061；

2.福田雷沃国际重工股份有限公司，潍坊，261206）

    摘要：采用样条插值方法拟合发动机外特性和液力变矩器原始特性，基于矩阵运算的牛顿法求解共同工作点,对装载机发动机与液力变矩器进行了匹配。针对装载机铲装不同物料消耗扭矩的不同，对发动机外特性曲线进行标定，提出了基于载荷谱的发动机与液力变矩器全工况优化匹配方法。本文采用Matlab语言编程，对某型号5吨装载机进行了动力匹配、发动机外特性标定和全工况匹配优化。

    关键词：装载机；液力变矩器；载荷谱；优化  中图分类号：

    Abstract:The spline interpolation method was used to fit external characteristics of engine and original characteristics of hydraulic torque converter. Newton’s method based on matrix operation was applied respectively to calculate the cooperating point of engine and torque converter，thus matching electronic control engine and hydraulic torque converter. The engine external characteristics was one more calibrated according to the difference of torque consuming when the loader freighting different materials, subsequently proposing a new kind of matching optimization method based on load spectrum . With the adoption of Matlab program, powertrain matching, calibration of engine external characteristics and matching optimization based on working conditions were conducted on some 5 tons loader.

    Key words:loader; hydrodynamic torque converter; load spectrum; optimization