首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到19条相似文献,搜索用时 140 毫秒
1.
介绍了无限变速器的基本原理,进行无限变速器的运动学分析,讨论了无限变速器滑差率和传动效率的影响参数,对无限变速器滑差率和传动效率的进行了实验研究,利用Matlab软件进行实验数据分析,结果表明,IVT在转矩比0.1—0.4,滑差率保持在20%以下,可以获得较为理想的传动效率。  相似文献   

2.
一般车型自动变速器油压试验主要包括:主油路油压测试、调速器油压测试、油压电磁阀工作测试、各挡离合器油压测试、蓄压器背压测试、变矩器工作油压测试、节气门油压测试,掌握其测试方法,可以保证自动变速器的修理质量。  相似文献   

3.
01M电控自动变速器实验台由一汽大众的01M自动变速器总成、节气门控制单元、发动机电控单元等零部件组装而成,具备挡位转换、故障码设置、油面检查、失速、时滞和油压实验的功能。教学实践证明,该变速器能使学生较容易地掌握自动变速器的工作原理、工作过程和故障诊断方法,显著提高教学效果。  相似文献   

4.
针对现行使用的普物力学教材中圆柱体无滑滚动条件的应用范围进行了明确,并强调了无滑滚动条件标量方程中各量的符号。  相似文献   

5.
燃气供销差率是燃气企业经营状况的一个重要指标,燃气供销差率偏高是很多燃气企业面临的一个问题。近年来淮北市燃气供销差率持续偏高,综合分析供销差的成因,从燃气计量、管网运行和客户管理等多方面采取有效措施,不仅可降低淮北市燃气供销差率,也可以为其他燃气行业降低供销差率提供参考。  相似文献   

6.
华能长兴电厂输煤系统露天煤场安装一台型号为DQL8030/1200的斗轮堆取料机,斗轮机回转作业时在局部区域回转油泵声音异常,甚至出现正常油压下不能动作的情况,对其进行检查后发现滚道大面积剥落、滑痕,最深处达1mm,滚子磨损严重.通过对斗轮堆取料机的使用情况介绍和回转支承的损坏原因进行分析,介绍了回转支承更换过程及润滑保养措施.  相似文献   

7.
用Matlab来进行机构运动、动力学仿真分析,有利于精确、简便、高效地实现机械传动设计。文章应用Matlab对一种曲柄摇块机构的无级变速器进行运动学和动力学分析,推导了无级变速嚣各构件加速度关系的闭环矢量方程和所受力与力矩的齐次线性方程组,建立了机构的运动和动力仿真模型。经Matlab/Simulink求解和动态仿真,结果表明:基于Matlab的机械传动设计。能有效的获得机构的运动和动力特性,缩短开发周期。  相似文献   

8.
以某电动汽车行星齿轮变速器为例开展振动特性研究,运用多体动力学方法建立变速器系统动力学模型,从内部激励的角度分析行星级齿轮副的振动状态;运用正交试验的方法确定了齿轮微观修形最佳方案;通过优化对比可知,修形后的齿轮改善了轮齿的啮合状态,明显降低了系统的声振响应,为变速器振动、噪声与声振粗糙度(NVH)优化设计提供借鉴。  相似文献   

9.
加筋土挡墙是一种抗震性能良好的结构形式。利用常规的安全系数和可靠度分析方法,对加筋土挡墙的抗震性能进行分析。地震发生时,首先破坏的是筋材的拔出或者拉断破坏,挡墙的抗滑能力较强,抗倾能力最强。一般情况下,考虑抗震设计时,可以将非抗震设计筋材长度扩大10%~20%。  相似文献   

10.
石方瑜 《唐山学院学报》2011,24(3):28-30,33
在变速器开发性试验中,需要测量换档力、扭矩、转速及噪音等参数,以判断变速器性能好坏。文章结合生产实际,详细介绍了变速器试验中各种传感器的适用范围、使用方法,并分析了试验测试结果对变速器开发试验的意义。  相似文献   

11.
分析了CVT系统传动过程中金属传动带及带轮的机械损失,并利用MATLAB/Simulink进行仿真分析.仿真分析显示,随着带轮压力的增加,环状钢带之间的滑动损失、金属带轮变形引起的功率损失和金属带与带轮间的滑动损耗都将逐渐增加,导致系统效率随之逐步下降.搭建CVT系统试验台进行系统效率试验,试验结果与仿真分析相一致.  相似文献   

12.
本文对曲柄摇块式脉动无级变速的传动机构进行了运动分析,从运动学原理对机构进行深入研究,得出该机构的最佳参数,减小脉动及动载荷,降低功率损耗,进而改善其运动及动力性能,  相似文献   

13.
1 Introduction A traction drive is a device, which transmits powerby means of traction contacts among multiple rotatingbodies. Variable ratio power transmission is achievedby varying the system geometry so that the points ofaction of the traction force are varied. When this isdone in a continuous manner, it results in a conti-nuously variable traction drive varaitor. There areprimarily two types of traction drives that are ofinterest in the automotive area, viz., half toroidaltraction drive an…  相似文献   

14.
Study on the Fuzzy COntrol Strategy of Automobile with CVT   总被引:3,自引:0,他引:3  
In order to study the dynamic characteristics of automobile with a CVT system, a bond graph analysis model of continuously variable transmission is established.On the base of the simulation state space equations that are established with bond graph theory,a fuzzy control strategy with an expert system of starting process has been introduced.Considering uncertain system parameters and exterior resistance disturbing,the effect of the profile of membership function and the defuzzification algorthm on the capacity of the fuzzy controller has been studied.The result of simulation proves that the proposed fuzzy controller is effective and feasible,Such controller has been employed in the actual control and has proved practicable.The study lays a foundation for design of the fuzzy controller for automobile with a CVT system.  相似文献   

15.
1. Introduction A toroidal continuously variable transmission (CVT) that uses a traction drive to transmit torque has a vastly larger torque capacity than a conventional CVT. This transmission technology has attracted considerable interest owing to its capability in substantially improving vehicle fuel economy and power performance [1]. The half toroidal CVT transmits torque by means of shear resistance of the traction fluid film taking advantage of the property of the fluid solidificatio…  相似文献   

16.
Based on the strength reduction method and strain-softening model,a method for progressive failure analysis of strain-softening slopes was presented in this paper.The mutation is more pronounced in strain-softening analysis,and the mutation of displacement at slope crest was taken as critical failure criterion.An engineering example was provided to demonstrate the validity of the present method.This method was applied to a cut slope in an industry site.The results are as follows:(1) The factor of safety and the critical slip surface obtained by the present method are between those by peak and residual strength.The analysis with peak strength would lead to non-conservative results,but that with residual strength tends to be overly conservative.(2) The thickness of the shear zone considering strain-softening behaviour is narrower than that with non-softening analysis.(3) The failure of slope is the process of the initiation,propagation and connection of potential failure surface.The strength parameters are mobilized to a non-uniform degree while progressive failure occurs in the slope.(4) The factor of safety increases with the increase of residual shear strain threshold and elastic modulus.The failure mode of slope changes from shallow slip to deep slip.Poisson’s ratio and dilation angle have little effect on the results.  相似文献   

17.
在机械行业中,许多产品都采用液压传动,而液压传动中,重要的执行部件就是液压油缸。液压油缸往往是采用钢筒进行滚压加工后制成。本文对液压油缸滚压加工的原理进行了分析;对精密钢筒滚压机理进行了研究;对精密钢筒滚压加工滚压力推导出计算公式。使滚压加工理论及滚压力的计算具有了可靠的依据。  相似文献   

18.
通过对带弹性滑动的分析,说明弹性滑动对带的传动比、传动功率损耗的影响。  相似文献   

19.
针对中石化济南分公司 1 4mt/aRFCCU在加工重劣原料过程中所遇到的问题及相关的工艺特点 ,并就有关的操作条件如反应压力控制、终止剂的作用、催化剂置换速率及剂油比的重要性等方面进行了分析和探讨  相似文献   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号