Diesel Injector Fuel Injector 0445120050 Bosch for Cummins Dongfeng Renault Trucks Engines Dodge RAM 2500 / 3500 Pickup 6.7L Cummins Turbo Diesel I6 engine

The structure and function of the injector：

Fuel injectors can be divided into two categories: open type and closed type according to the structure. Due to the different models of diesel engines, the structure of the injectors is not exactly the same. At present, all high-speed diesel engines use long, multi-hole, needle valve, and closed injectors. This form of fuel injector is usually composed of fuel injector coupling parts, oil filter coupling parts, compression and adjustment parts, and sealing gaskets.

The compression and adjustment part consists of a pressure rod, a compression spring, an adjustment screw plug and a locking nut. It is mainly used to maintain and adjust the opening pressure of the needle valve and limit the stroke of the needle.

The oil filter coupling part is composed of a pressure rod and a sleeve. It is mainly used to further finely filter the fuel to ensure the cleanliness of the fuel supplied to the nozzle assembly.

The part of the fuel injection nozzle is composed of a needle (needle valve) and a nozzle. The nozzle has a corresponding number of nozzle holes with a specified angle and diameter to ensure that the high-pressure fuel delivered by the fuel injection pump to the injector reaches the injection pressure. After the needle opens the pressure, spray the fuel into the cylinder evenly, finely and evenly, and

The gas is evenly mixed to form a good combustible mixture.

The body is used to assemble the various parts and connect with the cylinder block with bolts (or nuts).

The sealing gasket is used to seal the gap between the combustion chamber and the fuel injector, and is used to adjust the depth of the fuel injector nozzle inserted into the combustion chamber to ensure the formation quality of the combustible mixture.