Concept and function of fuel pump and fuel nozzle
The fuel pump is a device for supplying fuel. Its function is to lift the oil from the fuel tank to the engine fuel system and provide fuel pressure according to the working needs of the engine. The fuel nozzle is a part that sprays high-pressure fuel into the engine in a certain sequence, at a certain pressure and at a certain flow rate.
Types of fuel pumps and fuel nozzles
1. According to the pressure, it is divided into normal pressure pump and high pressure pump. Normal pressure pump has low pressure, and the fuel nozzle can be used loosely and roughly, while the high pressure pump needs to be used with a precise fuel nozzle.
2. According to the installation position, it is divided into built-in and external types. The built-in type is installed inside the engine, and the external type is usually installed at the bottom of the frame.
3. According to the working mode, it is divided into mechanical and electronically controlled types. The mechanical fuel pump relies on the engine speed to drive the oil pressure, while the electronically controlled fuel pump uses electronic control to achieve it.
Precautions for the use of fuel pumps and fuel nozzles
Regular maintenance, clean the oil circuit and fuel tank. During the cleaning process, be careful to prevent impurities from entering the oil pump and nozzle.
Confirm the correct type of oil pump and nozzle according to the vehicle model and engine requirements.
When replacing the oil pump and nozzle, you should follow the specifications to ensure that the installation position is correct and there are no problems such as oil leakage.
Use the right amount of fuel. Excessive or insufficient fuel will affect the working effect of the engine.
If problems are found in the oil pump and nozzle, they should be repaired or replaced in time to avoid problems such as misfire, difficulty in starting, and increased fuel consumption rate.
In short, the oil pump and nozzle are very important components of the engine fuel system. Correct use and maintenance are essential to ensure the safety and comfort of vehicle driving.
