The Precision High Quality Injector is composed of fuel injector body, fuel injector, support, spring and so on. High pressure oil is pumped in from the fuel injector supply port, and high pressure is generated in the injector body to act on the cone surface of the nozzle. When the oil pressure exceeds the set value, the valve core of the nozzle opens and the high pressure oil is ejected from the nozzle hole , It burns into the engine cylinder in the form of mist, making the piston reciprocate.
The Precision High Quality Injector is a precision device with very high processing accuracy, which requires a large dynamic flow range, strong anti-clogging and anti-pollution capabilities, and good atomization performance. The fuel injector receives the fuel injection pulse signal sent by the ECU, and precisely controls the fuel injection volume. The spray characteristics of the injector include atomization particle size, oil mist distribution, oil beam direction, range and diffusion cone angle. These characteristics should meet the requirements of the diesel engine combustion system, so that the mixture formation and combustion are perfect, and higher power and thermal efficiency can be obtained.
Electronically controlled fuel injectors are the most critical and complex components in the common rail system, as well as the most difficult components in design and process. The ECU controls the opening and closing of the solenoid valve to inject the fuel in the high-pressure fuel rail into the combustion chamber with the best fuel injection timing, fuel injection volume and fuel injection rate. In order to achieve an effective fuel injection starting point and precise fuel injection volume, the common rail system uses a special fuel injector with a hydraulic servo system and electronic control components (solenoid valves).