Injector is a precision machining device is very high precision, requiring a large dynamic flow range, anti-clogging and anti-pollution ability and good atomization performance. Injector ECU received the injection pulse signal sent to precisely control the amount of fuel injection.

Injector spray characteristics include atomization particle size, oil mist distribution, oil bundle direction, range and diffusion cone angle. These characteristics should be consistent with the requirements of the diesel combustion system to make the formation and combustion of the mixture perfect, and to obtain higher power and thermal efficiency.