A large whole of a car can be described as a behemoth in front of its parts, which contains the role and working principle of various parts, and they are inseparable from each other. Next, please take a look at the working principle of the fuel injector nozzle of the car with the editor.
Fuel Injector Nozzle Definition
The fuel injector nozzle is actually a simple solenoid valve. When the solenoid coil is energized, suction force is generated, the needle valve is sucked up, the injection hole is opened, and fuel is ejected at high speed through the annular gap between the needle of the needle valve head and the injection hole , Forming a mist, which is good for full combustion. The biggest advantage of injection fuel supply is that the fuel supply control is very accurate, so that the engine can have the correct air-fuel ratio in any state. Not only does the engine keep running smoothly, but its exhaust gas can also meet the requirements of environmental regulations.
Fuel Injector Nozzle Function
The fuel injector nozzle itself is a normally closed valve. The normally closed valve means that the valve is always closed when no control signal is input; while the normally open valve is when the control signal is not input, the valve is always open. The valve needle moves up and down to control the opening and closing of the valve. When the ECU issues a fuel injection command, its voltage signal will cause current to flow through the coil in the fuel injector nozzle, generating a magnetic field to suck up the valve needle, allowing the valve to open so that fuel can be sprayed from the fuel injection hole.
As a fuel injector nozzle, one of the key components of the EFI engine, its performance will seriously affect the performance of the engine. Blockage of the fuel injector nozzle will seriously affect the performance of the car. The cause of the blockage is because carbon deposits in the engine are deposited on the fuel injector or impurities in the fuel block the fuel injector passage. After the car has been driving for a period of time, certain deposits will form in the fuel system. Therefore, the fuel injectors should be carefully cleaned regularly to ensure that they work well.