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机车性能
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  locomotive performance
     With the increasing requirement of locomotive performance, the problem becomes much sharper.
     随着对机车性能要求的不断提高,难加工材料的切削加工问题更加突出。
短句来源
     The circuits are simplified in LCU in DF8B and system reliability is improved so that the locomotive performance requirement is fully complied with.
     DF8BLCU简化了机车线路,提高了系统可靠性,完全满足机车性能要求。
短句来源
     Because there are no statistics standard and forecast measure in existing calculation method for energy consumption of train traction,a new method to calculate the energy consumption of train traction is put forward by analyzing the impact on the energy consumption of train traction by such factors as locomotive performance and railway line attribute,etc.
     针对列车牵引能耗既有计算方法缺乏统计标准和能耗预测手段,通过分析机车性能、线路属性等因素对列车牵引能耗的影响,提出新的能耗计算方法。
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  “机车性能”译为未确定词的双语例句
     Comparison and analysis of the properties of GK_(1G) series locomolives and V100 -3 locomotives
     GK_(1G)系列机车与V100-3型机车性能的比较分析
短句来源
     Performance synthesis of SS 7C passenger electric locomotive
     SS_(7C)客运电力机车性能综述
短句来源
     The overall structure, technical characteristics and differences of the modified high power SS9 passenger locomotive are stated.
     简要介绍SS9改进型大功率客运电力机车总体结构、技术特点及与原SS9机车不同之处。 运行表明,机车性能良好,满足铁路提速要求。
短句来源
     CKD_(4C) locomotive could meet the customer requirement, working with the technologies which are advanced,proven,economic,applicable and reliable.
     CKD_(4C)型机车性能满足用户的要求,综合体现了“先进、成熟、经济、适用、可靠”的技术原则。
短句来源
     A prototype locomotive of this type was completed for testing in 2001 June to confirm the performance for basic requirements and revenue service operation by using actual train- sets from 2001 July to 2002 March.
     为证实机车性能满足基本要求,至2001年6月完成了样机试验,并从2001年7月至2002年3月牵引列车进行了运营。
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     Research and Development of High Performance Bogie
     高性能机车转向架的研发
短句来源
     Research and Development of High Performance Bogie of Locomotive
     高性能机车转向架的研发
短句来源
     Plant Performance
     设备性能
短句来源
     application forecast;
     性能预测;
短句来源
     The diagnostic technique of failure of locomotive and rolling stock
     机车车辆故障诊断技术
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  locomotive performance
However, locomotive performance of males may also depend on relative leg length.
      


The author depicts the necessity of significant technical improvements to SS3 locomotives, actual alterations made upon No.SS3 123 locomotive along with its performance improvements afterwards.The comparing test shows that modifications to the voltage regulation mode and traction equipments can result in apparent improvements on performance, with the average starting traction force at slope being increaced by 10% and the operation reliability of the whole loco set being upgraded.

本文叙述了对SS3机车进行重大技术改造的必要性,阐明了SS3123号机车所改造的内容及改造后在机车性能上的改善,并通过牵引对比试验,证明调压方式和牵引装置等改造,使SS3机车在性能改善方面取得了明显效果,坡停起动平均牵引力可增加10%,并提高了整车的运行可靠性。

The normal slip Se of an asynchronous traction motor would exert a tremendous influence to the locomotive performance, especially when two wheel-axles of a bogie are driven respectively by two asynchronous motors fed merely from an inverter. Once the value Se is determined. The current deviation and the traction force deviation of the two motors due to the deviation of the wheel diameters are also definite. Besides, the parametric difference of the two motors are also producing a great impact to the slip charateristic....

The normal slip Se of an asynchronous traction motor would exert a tremendous influence to the locomotive performance, especially when two wheel-axles of a bogie are driven respectively by two asynchronous motors fed merely from an inverter. Once the value Se is determined. The current deviation and the traction force deviation of the two motors due to the deviation of the wheel diameters are also definite. Besides, the parametric difference of the two motors are also producing a great impact to the slip charateristic. An optimum normal slip of the asynchronous traction motor is analysed, considering all the nonlinear parameters as indicated above with an acurate equivalent circuit, and the optimum range of a normal slip is calculated and presented.

当电力机车上一台转向架的两个轮对分别各由一台异步牵引电动机带动,并由同一台逆变器供电时,牵引电动机的额定转差率Se对电力机车的性能将产生巨大的影响。一旦Se值确定后,由于动轮直径偏差带来的牵引电动机电流偏差和牵引力偏差即可确定。此外,电动机本身参数的偏差也对转差特性产生巨大影响,本文考虑了上述所有这些非线性参数的影响,分析了异步牵引电动机的最佳额定转差率,并结合精确的等效电路进行计算,提出了额定转差率的最佳范围。

This paper gives a model of twenty-seven degrees of freedom for a six-axle locomotive with three-axle bogies,sets up the numerical bifurcation method as the method ofnonlinear lateral stability analysis of a locomotive,and derives criteria of stabillity analysis.This paper indicates that the subcritical Hopf bifurcation speed V_n and the derailing speed V_dmust be obtained in order to describe a complete picture of the lateral stability of a locomotive.However,the critical speed V_c is not the most important...

This paper gives a model of twenty-seven degrees of freedom for a six-axle locomotive with three-axle bogies,sets up the numerical bifurcation method as the method ofnonlinear lateral stability analysis of a locomotive,and derives criteria of stabillity analysis.This paper indicates that the subcritical Hopf bifurcation speed V_n and the derailing speed V_dmust be obtained in order to describe a complete picture of the lateral stability of a locomotive.However,the critical speed V_c is not the most important index of locomotive stability. At the end of this paper,the diesel locomotive DF_9 has been analyzed for nonlinear lateral stability.To solve the locomotive equations of motion about nonlinear lateral stability, the papergives preference to Newmary′s predictor-corrector integration scheme as an integration algorithm,and sets up the numerical integration programs using FORTRAN language.At thesame time,the after treatment programs have been set up.Nonlinear geometry,changing contact areas,nonlinear suspension,nonlinear creep forcesand driving motor moment are taken into account in the model.The result of analysis may beused to choose a new-type locomotive′s parameter and predict a new-type locomotive′s performance as well as remake an old-type locomotive.The analysis will be suitable for a four-axle locomotive with two-axle bogies and a four-axle passenger car with two-axle bogies bydoing a little revision to the model.

本文给出了一种27个自由度的三轴转向架六轴机车非线性横向稳定性的数学模型,建立了数值分叉方法作为非线性横向稳定性的分析方法,引入分析稳定性的一组判别原则,指出为了得到机车横向稳定性的完整图像,必须获得亚临界Hopf分叉速度V_n及脱轨速度V_d。最后对东风_9型客运内燃机车进行了非线住板向稳定性分析。作者优选采用Newmark预测-校正积分法以求解运动微分方程组;开发了求解运动微分方程组的数值积分程序,以及处理计算结果的绘图程序。在机车非线性横向稳定性的数学模型中,考虑了轮轨接触几何学非线性、弹性滑动饱和非线性、悬挂非线性以及电机转矩对机车稳定性的影响。其研究结果可以有效地适用于新型机车的性能预测,新型机车设计的多数选择、调整,以及定型机车性能的检验及旧型机车的技术改造。对该模型略作修改,整个分析可适用于二轴转向架四轴机车和二轴转向架四轴客车的非线性横向稳定性问题。

 
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