(1) Shaft needle type electromagnetic injector
When the fuel is injected, the armature drives the needle valve to rise from its seat surface by about 0.1 mm, and the fuel is ejected from the precision gap. In order to fully atomize the fuel, a needle of the injection shaft is ground at the front end of the needle valve. The injector suction and fall time is about 1 to 1.5 ms.
(2) Ball valve type electromagnetic injector
The valve needle of the ball valve is light in weight and has a large spring preload force for a wider dynamic flow range. The ball valve has an automatic centering function and good sealing. At the same time, the ball valve simplifies the structure of the metering part and helps to improve the accuracy of the fuel injection.
(3) Chip valve type electromagnetic injector
The light-weight valve and bore seats are combined with a magnetically optimized injector assembly that allows the injector to have a wide dynamic flow range and high resistance to clogging.
(4) Injector with lower oil inlet
By adopting the bottom oil supply mode, since the fuel can continuously flow out from the upper portion of the injector through the inner cavity of the injector, the cooling effect on the metering portion of the injector is very obvious, so that the generation of the air resistance can be effectively prevented, and the hot start of the automobile can be improved. Reliability.
In addition, the fuel injection unit with bottom injection eliminates the fuel mains and helps reduce costs.