What is the principle of the injector?

The injector body produces high pressure to the injector nozzle cone, when the oil pressure exceeds the adjusted value when the injector nozzle spool opens, high-pressure oil from the nozzle holes sprayed out in a mist to the engine cylinder cylinder combustion, so that the piston reciprocating operation. More related information is as follows:

1. The injector is a precision device with very high machining accuracy, which requires a wide dynamic flow range, strong anti-clogging and anti-pollution ability as well as good atomization performance. The injector accepts the injection pulse signal sent by the ECU and precisely controls the fuel injection quantity. The spray characteristics of the injector include atomization particle size, oil mist distribution, oil beam direction, range and diffusion cone angle. These characteristics should be in line with the requirements of the diesel engine combustion system, in order to make the mixture formation and combustion perfect, and obtain high power and thermal efficiency.

2. electronically controlled injector is the most critical and complex component in common rail system, and also the most difficult component in design and process. the ECU controls the opening and closing of solenoid valve to inject the fuel in the high pressure rail into the combustion chamber with the optimal injection timing, injection volume and injection rate. In order to realize effective injection starting point and precise injection volume, the common rail system adopts with hydraulic servo system and electronic control elements.