cat c7 injector solenoid & 3126b caterpillar engine solenoid

ราคา: 49 CNY

cat c7 injector solenoid & 3126b caterpillar engine solenoid
Sandy(KA)
China Lutong Parts Plant
whatsapp/tel:008618659458099

 

 

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  Hole type injector The hole type injector consists of needle valve, needle valve body, ejector pin, pressure regulating spring, pressure regulating screw and injector body. The most important of these is the needle valve and the needle valve body (generally called the injector or the fuel injection head) made of high-quality bearing steel, which are collectively referred to as needle valve couplers. When the injector is working, the high-pressure diesel oil pumped by the fuel injection pump enters the injector through the oil pipe joint, and then enters the annular high-pressure oil chamber in the middle of the needle valve body through the oil inlet passage on the injector body. The oil pressure acts on the pressure cone surface of the needle valve, forming an upward axial thrust on the needle valve. When the thrust is greater than the preload pressure of the pressure regulating spring and the friction between the needle valve coupler (this force is very small). The needle valve moves up immediately, and the sealing cone at the lower end of the needle valve leaves the conical ring band of the needle valve body to open the injection hole, so that the diesel oil is injected into the combustion chamber at a high pressure. When the fuel injection pump stops supplying oil, the pressure in the high pressure oil passage drops rapidly, and the needle valve returns to the position under the action of the pressure regulating spring, and the injection hole is closed. The number of nozzles of the hole type injector is large (generally 1-8), the diameter of the nozzle hole is small (generally 0.2-0.8mm), the injection pressure is high (generally 17-22MPa), and the self-cleaning ability is poor (spraying The hole is easy to coke and block), which has high requirements on the quality of diesel filter. It is suitable for direct injection type combustion chambers with high requirements on spray quality. For example, the 5-hole closed type injector used in the CA6110-2 diesel engine has a nozzle hole diameter of 0.32 mm and a fuel injection pressure of 17.2 MPa. Another example is the double-hole closed type injector used in the 6120 diesel engine. It is 0.42 mm and the injection pressure is 17.5 MPa.

 

F00RJ00005  F00RJ00339  F00RJ00420  F00RJ00995  F00RJ01159  F00RJ01218  F00RJ01278     F00RJ01329   F00RJ01334     F00RJ01428    F00RJ01451   F00RJ01479
F00RJ01522    F00RJ01657    F00RJ01692     F00RJ01704    F00RJ01714   F00RJ01727

F00RJ01747    F00RJ01895    F00RJ01941     F00RJ02004    F00RJ02005   F00RJ02035
F00RJ02056    F00RJ02103    F00RJ02130     F00RJ02213    F00RJ02246   F00RJ02466

F00RJ02472    F00RJ02806

F00VC01001   F00VC01004   F00VC01005    F00VC01022   F00VC01023    F00VC01024

F00VC01033   F00VC01043   F00VC01044    F00VC01045   F00VC01051    F00VC01315

F00VC01324   F00VC01328   F00VC01329    F00VC01334   F00VC01338    F00VC01346
F00VC01347   F00VC01349   F00VC01352    F00VC01358   F00VC01359    F00VC01363
F00VC01371   F00VC01372   F00VC01383    F00VC01386   F00VC01365
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