How does the carburetor know that the oil intake is normal? The diesel engine can see the fuel nozzle.

1. Through the solenoid valve, ECU controls the opening or closing of the solenoid valve.

2. Now the fuel injector for automobile is actually a simple solenoid valve. The electromagnetic coil is energized to generate suction, the needle valve is sucked up and the nozzle is opened. Fuel is sprayed out at high speed through the annular gap between the pins at the head of the needle valve, forming mist, which is beneficial to full combustion. In the past, the nozzle used in diesel engine was controlled mechanically, and the nozzle of mechanical diesel engine worked by controlling the precision coupling (needle valve and needle valve body).

3. The nozzle coupling is one of the three precision coupling parts of traditional diesel engine, namely plunger, plunger sleeve, needle valve, needle valve body, oil outlet valve and oil outlet valve seat. The nozzle of gasoline engine is a part of the electronic control system of gasoline engine, which replaces the carburetor of carburetor gasoline engine. The nozzles used in automobiles mainly include diesel nozzles, gasoline nozzles and natural gas nozzles. Now some foreign manufacturers can manufacture special nozzles for hydrogen.

4. As one of the key components of EFI engine, the performance of injector will be seriously affected. Nozzle blockage will seriously affect the performance of the car. The reason for the blockage is that carbon deposits in the engine are deposited on the fuel nozzle or impurities in the fuel block the fuel nozzle channel. After the car runs for a period of time, the fuel system will form certain deposits. The formation of deposits is directly related to automobile fuel: firstly, because gasoline itself contains colloid and impurities, or dust and impurities brought in during storage and transportation, deposits similar to sludge are formed in automobile fuel tanks and oil intake pipes over time; Secondly, the unstable components in gasoline react at a certain temperature to form colloid and resin-like viscous bodies. When these viscous substances are burned in the nozzle, intake valve and other parts, the deposits will become hard carbon deposits.