Now the injector for a car is actually a simple solenoid valve. When the solenoid is energized, the suction is generated, the needle valve is sucked up, the nozzle is opened, and the fuel is passed through the ring between the needle of the needle head and the orifice. The gap is ejected at a high speed to form a mist, which is good for combustion. In the past, the injectors used in diesel engines were mechanically controlled, and the mechanical diesel nozzles were operated by controlling precision couplers (needle valves, needle valves).
The nozzle part is one of the three precision parts of the traditional diesel engine, three precision parts: plunger, plunger sleeve, needle valve, needle valve body, oil outlet valve, oil outlet valve seat. The gasoline engine nozzle is part of the gasoline electrical control system, replacing the carburetor of the carburetor-type gasoline engine. The nozzles for automobiles mainly include: diesel nozzles, gasoline nozzles, natural gas nozzles, etc. Some foreign manufacturers can now manufacture hydrogen-specific nozzles.