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Fuel injectors can be divided into many types, including hole type fuel injectors, pintle type fuel injectors, ball valve type electromagnetic fuel injectors, disc valve type electromagnetic fuel injectors, low resistance value injectors, high resistance value injectors Injectors, single-point injection (SPI) fuel injectors and multi-point injection (MPI) fuel injectors, etc. These classifications can be divided according to the structure of the injection port, the number of injection holes, the resistance value of the electromagnetic coil, and the application. Different types of injectors have different working principles and application ranges.
A fuel injector is a critical fuel system component. It is used to inject fuel into the engine's cylinders in the right amount and at the right time. Its working principle can be simply summarized as two main processes: fuel pressurization and injection control.
1. Fuel pressurization process:
A fuel injector usually consists of a solenoid valve and a fuel injector. During engine operation, fuel is pumped from the fuel tank to a high-pressure fuel pump. The high-pressure fuel pump delivers fuel to the injector through a high-pressure fuel pipe. There is a chamber inside the fuel injector, which consists of a piston and a spring. When the solenoid valve receives a control signal, it opens and allows fuel to enter the injector. After fuel enters the chamber, the piston is moved upward by the fuel pressure, compressing the spring. When the piston moves to a certain position, the fuel injector opens and fuel is sprayed out at high speed.
2. Injection control process:
The injection control of the fuel injector is completed by the engine control unit (ECU). The ECU receives multiple parameter signals from sensors, such as engine speed, load, intake air temperature, etc. Based on these parameters, the ECU will calculate the optimal injection timing and amount, and send corresponding control signals to the solenoid valve of the injector.
The frequency and duration of the control signal determine the amount of fuel injected and the injection duration of the injector. By precisely controlling the injection amount and injection timing of the injector, the ECU can achieve precise control of the engine's fuel supply to improve combustion efficiency and power output.
The key to the working principle of the injector lies in high-precision fuel injection control. By accurately controlling the amount and timing of injection, the injector can ensure that fuel is injected into the cylinder in the right amount and at the right time, thereby achieving efficient combustion and power output. At the same time, the design and manufacturing quality of the injector also have an important impact on its working effect. For example, the size and shape of the injection hole of the fuel injector, the sealing performance of the fuel injector, etc. will all affect the spray effect and injection accuracy of the fuel injector.
Please feel free to contactus Parts Sea engineers or sales for help if you have no parts No.
tse@partssea.com | sales@partssea.com
Fuel injectors can be divided into many types, including hole type fuel injectors, pintle type fuel injectors, ball valve type electromagnetic fuel injectors, disc valve type electromagnetic fuel injectors, low resistance value injectors, high resistance value injectors Injectors, single-point injection (SPI) fuel injectors and multi-point injection (MPI) fuel injectors, etc. These classifications can be divided according to the structure of the injection port, the number of injection holes, the resistance value of the electromagnetic coil, and the application. Different types of injectors have different working principles and application ranges.
A fuel injector is a critical fuel system component. It is used to inject fuel into the engine's cylinders in the right amount and at the right time. Its working principle can be simply summarized as two main processes: fuel pressurization and injection control.
1. Fuel pressurization process:
A fuel injector usually consists of a solenoid valve and a fuel injector. During engine operation, fuel is pumped from the fuel tank to a high-pressure fuel pump. The high-pressure fuel pump delivers fuel to the injector through a high-pressure fuel pipe. There is a chamber inside the fuel injector, which consists of a piston and a spring. When the solenoid valve receives a control signal, it opens and allows fuel to enter the injector. After fuel enters the chamber, the piston is moved upward by the fuel pressure, compressing the spring. When the piston moves to a certain position, the fuel injector opens and fuel is sprayed out at high speed.
2. Injection control process:
The injection control of the fuel injector is completed by the engine control unit (ECU). The ECU receives multiple parameter signals from sensors, such as engine speed, load, intake air temperature, etc. Based on these parameters, the ECU will calculate the optimal injection timing and amount, and send corresponding control signals to the solenoid valve of the injector.
The frequency and duration of the control signal determine the amount of fuel injected and the injection duration of the injector. By precisely controlling the injection amount and injection timing of the injector, the ECU can achieve precise control of the engine's fuel supply to improve combustion efficiency and power output.
The key to the working principle of the injector lies in high-precision fuel injection control. By accurately controlling the amount and timing of injection, the injector can ensure that fuel is injected into the cylinder in the right amount and at the right time, thereby achieving efficient combustion and power output. At the same time, the design and manufacturing quality of the injector also have an important impact on its working effect. For example, the size and shape of the injection hole of the fuel injector, the sealing performance of the fuel injector, etc. will all affect the spray effect and injection accuracy of the fuel injector.