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1.Open needle valve "A" high side and vent needle valve to vent air from bypass hose.
开启针形阀“A”高端和排气针形阀，从旁路软管排放空气。收藏指正
2.Consisting of PVC tube,air-balloon,adjusting valve and stainless steel needle.
产品由PVC软管、气囊，调节阀，不锈钢针组成。收藏指正
3.Thereout, the pressure characteristics of every subsystem, the current of solenoid valve ,the gag bit lift, needle lift and control parameters and control parameters have been obtained.
由此得到各部件集中容积内的压力特性、驱动电路的电流、衔铁升程、针阀升程的变化规律等动态参数。收藏指正
4.A type of engine fuel injector of 12-cylinder was set up to form five kinds of fault,they are nozzle blockage,needle valve clip,spring break,very low and very high pressure of needle valve open.
某12缸发动机喷油器上设置的5种故障分别是喷孔堵塞、针阀卡滞、弹簧断裂、针阀开启压力过低和针阀开启压力过高。收藏指正
5.Connect bypass hose between vent needle valve and loosely connect to test cock No. 1.
在排气针形阀上连接旁路软管，并将其松散连接到测试旋塞1号上。收藏指正
6.Install a needle valve in the control line. If uneven pressure should cause the regulator to pulsate, its action can be stabilized by throttling the valve.
在控制管线上安装一个针形阀。如果不稳定的压力导致调节阀波动，则这种波动通过对阀门节流将稳定下来。收藏指正
7.After studying on the correlation of the injection rate, fuel pressure in the pipe and the needle valve lift, and analysing the amplitude of the first reflecting wave, the results obtained by this equipment are ready to compare with that by rotating cells method and ordinary Bosch method.
考察了喷油规律与油管压力、针阀升程的关系,分析了第一反射波的波幅问题,并将测试结果与用蜂窝法、Bosch长管法的测量结果进行了对比。收藏指正
8.The authors carry out data collection and calculation for fuel injection pressure and needle valve lift signals measured on the fuel pump test bed by using self-developed software.On the basis of experiments,four criteria for analysing fuel injection process are proposed and the comparison of performances between AU and NU type fuel outlet valves is made.
作者用自行开发的软件对在油泵试验台上测得的喷油压力、针阀升程信号进行了数据采集和计算，在试验的基础上提出了分析喷油过程的四个判据，给出了AU型和NU型出油阀的性能比较结果。收藏指正
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