cat c7 injector solenoid & 3126b caterpillar engine solenoid

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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