【摘 要】
：
为了优化装载机各挡传动比,提出基于使用工况的传动比重新设计.装载机在Ⅱ、Ⅲ挡工作时,通过试验得到前、后桥左右半轴转矩曲线和转向泵、变速泵、工作泵压力曲线.基于分布概
论文部分内容阅读
为了优化装载机各挡传动比,提出基于使用工况的传动比重新设计.装载机在Ⅱ、Ⅲ挡工作时,通过试验得到前、后桥左右半轴转矩曲线和转向泵、变速泵、工作泵压力曲线.基于分布概率计算出Ⅱ、Ⅲ挡时总转矩概率平均值,根据发动机和液力变矩器共同工作时的输入、输出特性,找出输出特性最低油耗点及其对应的输出转矩.保持Ⅰ、Ⅳ挡传动比不变,按照Ⅱ、Ⅲ挡总转矩概率平均值与最低油耗点对应的转矩相匹配的原则,计算出Ⅱ、Ⅲ挡传动比分别为2.433和1.264.经仿真计算,装载机在循环工况下,按新传动比工作的耗油量为13.85 L/h,比原来降低了1.33 L/h.新设计的传动比提高了装载机的燃油经济性.
其他文献
The hemodynamic interactions of red blood cells (RBCs) in a microcapillary flow are investigated in this paper. This kind of interaction is considered as the no
This paper focuses on the influence of dynamic viscoelasticity and surface temperature on the fatigue mechanism and fatigue lifetime of polyester/rubber composi
The low velocity impact responses of shape memory alloy ( SMA ) reinforced composite beams were analyzed by employing the finite element method. The finite elem
A study is performed about the water entry of a flat-bottom structure by use of the FE software MSC Dytran. The aim of the study is to find out the effect of th
In order to quantify the development of the tensile stresses and obtain a reliable estimation of the cracking risk, the concrete was subjected to restrained con
In this work, nonlinear multimode aerodynamic analysis of the Jingsha Bridge under erection over the Yangtze River is conducted, and the evolutions of structura
本文用傅立叶红外光谱仪,X-射线荧光光谱仪,电子显微镜,拉力试验机对两种片材进行了组成、结构与性能分析.在此基础上,用自由体积理论和界面化学理论讨论了薄片的断裂问题.研
An experimental study on performance of plain concrete under triaxial constant-amplitude and variable-amplitude tension-compression cyclic loadings was carried
A time domain finite element method (FEM) for the analysis of transient elastic response of a very large floating structure (VLFS) subjected to arbitrary time-d