What are the classifications of fuel injectors

(1) shaft needle type electromagnetic fuel injector
The armature drives the needle valve to rise from its seat surface about 0.1mm, and the fuel is ejected from the precision gap. In order to fully atomize the fuel, a section of injection shaft needle is ground out at the front end of the needle valve. The suction and descent time of the injector is about 1 ~ 1.5ms.
(2) ball valve electromagnetic injector
Ball valve needle weight light, spring preload force, can obtain a wider range of dynamic flow. Ball valve has automatic centering effect, good sealing. At the same time, the ball valve simplifies the structure of the metering part, helping to improve the accuracy of fuel injection.
(3) disc valve type electromagnetic fuel injector
Lightweight disc and orifice seats combined with magnetically optimized fuel injector assemblies give fuel injectors not only a wide dynamic flow range, but also strong clogging resistance.
(4) The lower oil injector
Using the bottom oil supply mode, because the fuel can be around the seat area through the injector cavity from the upper continuous outflow, the cooling effect of the injector metering parts is very obvious, so it can effectively prevent the production of air resistance, improve the reliability of hot starting of the vehicle.
In addition, the use of bottom injection fuel injectors can eliminate the fuel line, and help to reduce costs.