Thus in this paper the flow field of the pilot-operated globe valve the characteristics of the force on valve core and the valve core motion and the formula for selection of spring were studied via numerical simulation and experiment research .

为此本文采用数值模拟和实验研究相结合的方法，对先导式截止阀的流场特性、 阀芯受力和 运动特性以及弹簧选型等进行研究。

Mathematic model and simulation program for valve motion on reciprocating pumps

往复泵 泵阀 运动规律的建模与仿真

Lastly the strength of inclined-axis swirl is directly proportional to the shadowed area of the single channel except for the S1 valve position where the in-cylinder motion is only tumble .

除具有纯滚流特点的S1 阀 片位置外，缸内气体斜 轴涡流 运动强度与单边气道截面被遮住的面积成正比。

OCV ( The camshaft of hydraulic control valves ) and actuator as VVT engine system ' key components accepts the best valve timing instructions from ECU ' calculating according to actual working from changes the motion hydraulic flow and improves engine performance .

OCV（凸轮轴油压控制阀）及执行器作为汽车VVT发动机系统关键部件，接受来自ECU根据实际工况计算出来的最佳 气门正时指令，改变 运动 状态，液压流量，提高发动机性能。

Its ' control loop has two high speed on-off valves and a switch valve . The two on-off valves control the hydraulic cylinder motion the valve 's manual button supply a method of manual handle .

该液压系统由两个高速球阀与一个电磁换向 阀组成控制同路，两个球阀控制接力器的 位移，其上的手动按钮作为手动操作；

In four valve spark ignition engines tumble motion in the cylinder is required to be intensified in order to improve combustion process in general homogeneous mixture combustion system or to stratify the air fuel mixture in lean burn combustion system .

在四 气门汽油机中，运用滚流 运动组织快速燃烧过程或混合气分层稀燃过程，都需要提高滚流强度。

There is emulation of the pump valve ' motion regular by MATLAB ;

利用MATLAB软件仿真出 隔膜泵 排出 阀 的 运动规律，直观地观察并总结 排出 阀 的 运动情况。

The patented valve has advantages of both motion valve and fixed valve such as less maintenance less unplanned shutdown due to mechanical failure of valve and less valve abrasion .

专利 阀兼有 运动阀和固定阀的优点，维修工作量小，阀因机械故障而引起的计划外停产减少，还减少阀的磨损。

Results The most frequent cardiac involvement were left atrium and left ventricle changes valve regurgitation and abnormity of regional ventricular wall motion .

结果2型糖尿病肾病肾衰竭心脏病变以左心系统扩大与肥厚、 二尖瓣返流和节段性室壁 运动下降为特点。

The stereoscopic view of mitral valve apparatus and its motion could be observed from either left ventricle of left atrium .

重建图像能从左室或左房侧显示 二尖瓣装置的整体三维空间结构及 动态 变化。

No patients with significant valve disease or regional wall motion abnormality were included .

所有患者均无严重 瓣膜病或节段性室壁 运动异常。

The advantage of CAD / CAE powerful functions of UG software is made to realize gate valve modeling assembling and key parts motion simulation and finite element analysis of valve body with the result that the dimension and structure of valve body are optimized .

利用UG软件强大的CAD/CAE功能进行 闸阀的建模、装配、关键部分的 运动仿真及阀体的有限元分析，对阀体尺寸和结构进行优化。

According to the work principle of rotor oil-gas mixture pump and the reciprocating ball valve theory the differential motion equations of export one-way ball valve in the pure liquid condition were deduced .

根据转子式油气混输泵的工作原理，借助往复泵 球阀理论，推导了该泵出口单向球阀在纯液工况下的 运动微分方程。

The system is consist of dispensing valve motion stage temperature control subsystem pneumatic subsystem driving circuit for electromagnetic valve control system and system control software .

喷射点胶系统由喷射点胶 阀、 运动平台、温度控制子系统、气动子系统、电磁阀驱动电路、控制系统、系统控制软件组成。

The article introduces a new technology which adopt PLC and valve terminal to control the motion of air cylinder to get the purpose of melting bridge-wire .

文章介绍了利用进口可编程序控制器PLC和 阀岛来控制气缸 动作，从而实现熔断桥丝的新技术。

Neural network identification on asymmetric hydraulic cylinder controlled by valve in ship motion simulator

船舶 运动模拟器 阀控非对称缸液压系统神经网络辨识

And the mathematical models of this valve were established the request designing the self-elastic damping plate was also presented for ensuring there is good motion law in the valve and guiding the design of the self-elastic damping plate .

建立了带自弹缓冲片压缩机网状 阀工作过程数学模型，从保证气阀良好 运动规律的角度，分析了自弹缓冲片工程设计时要满足的要求，用来指导自弹缓冲片的设计。

The effect of swirl control valve on air motion in cylinder of a four-valve SI Engine

涡流控制 阀对四气门汽油机缸内空气 运动影响的研究

In the research of the motion pattern of the drill pump valve in order to obtain practical result the displacement and motion pattern of the pump valve are tested on the test bed by the testing system designed by the authors themselves .

在研究钻井 泵阀的运动规律时，为了避免因纯理论的推导而得出不切实际的结论，在 泵阀试验台上采用自行设计的测试系统，对泵阀位移及 运动规律进行了测试。

Research on the Influence of Refrigerant on Valve Motion in Compressor ;

工质对 热 声 发动机的性能有重要的影响。

The larger pressure difference is the greater the valve head force and the motion speed will be the greater the valve seat force and the motion speed are as well as back to more flux .

压差越大， 阀头阀座的受力和 运动速度越大，回流量越大。

The high pressure gas will be throttled by Exhaust valve and its motion is throttling expansion not satisfied with free bubble theory .

气枪排气 阀门的存在会对气室中高压气体的释放产生不可忽视的节流作用，气体的膨胀 过程不再符合水中自由气泡振荡理论，而是一种节流膨胀。

The simulation model provides a powerful platform for control methodology . ( 3 ) The thesis presents an sectional valve motion control strategy for electromagnetic valvetrain based on inverse system method .

研究了基于逆系统方法的电磁驱动配气机构 气门 运动控制策略。

This impulsion tool uses a high speed on-off valve to control to-and-fro motion of the distributing oil valve core which impels the cylinder rod to-and-fro motion to form impulsion .

此冲击器采用高速 开关阀控制配油阀的阀芯往复 运动，从而促使活塞杆往复运动形成冲击的工作方案。

Research on the Influence of Refrigerant on Valve Motion in Compressor

工质替代对压缩机 环状 阀的主要影响因素研究

An example of calculation shows that in consideration of the effect of pump valve motion on displacement the displacement nonuniformity is raised by 5 times when cylinder liner with small diameter is used .

实例计算表明，考虑 泵阀 运动对排量的影响，使用小直径缸套时，泵的排量不均度提高了5倍。

The author establishes the differential equation of Valve motion on a drilling pump with offset crankshaft works out the numerical solution of the motion pattern of the valves and presents the CYC conditions for non-impact valve operation on such a pump .

建立了偏置式钻井往复泵 泵阀 的 运动微分方程式，得出了阀的运动规律的数值解，给出了偏置式往复泵泵阀无冲击工作的CYC条件。

The valve spring stiffness in some extent will not influence the motion characteristics . But the contact stress of the cam and the tappet will increase as the spring stiffness increases .

气门弹簧刚度在一定范围内，并不会影响气门 运动规律，但是，气门落座力、凸轮挺柱接触应力会随弹簧刚度的增加而增加。