28347042
Product parameter
| OEM | 28347042 7261663 400903-00043D 400903-00043E |
| Place of Origin | Shandong,China |
| Engine Code | 283470427261663400903-00043D 400903-00043E |
| Car Model | Diesel Car |
| Material | Stainless Steel |
| Fuel Type | Diesel |
| Purpose | for replace/repair |
| Warranty | 6 Months |
| Brand Name | OEM |
| Model Number | 283470427261663400903-00043D 400903-00043E |
| Universal Fitment | Yes |
| Product Name | Fuel Injector |
| Model Number | 283470427261663400903-00043D 400903-00043E |
Automobile fuel injector information
1. Definition and function
◎ Definition: The fuel injector is a key component of the electronic fuel injection engine, responsible for atomizing the fuel and spraying it into the intake manifold or cylinder.
◎ Function:
● Fuel atomization: Disperse the fuel into fine particles for easy mixing with air.
● Fuel metering: Accurately control the amount of fuel according to engine requirements.
● Fuel injection: Spray the fuel into the cylinder or intake manifold at the appropriate time.
2. Type
◎ By installation position:
● Intake manifold injection: The fuel injector is installed in the intake manifold, and the fuel and air are mixed in the manifold.
● Direct injection in the cylinder: The fuel injector is directly installed in the cylinder, and the fuel is directly sprayed into the combustion chamber.
◎ By control method:
● Mechanical fuel injector: controlled by mechanical pressure.
● Electronic fuel injector: controlled by ECU, with higher precision.
3. Structure
◎ Main components:
● Solenoid coil: controls the fuel injector switch.
● Needle valve: controls fuel injection.
● Nozzle: the channel through which fuel is sprayed.
● Filter: filters impurities in the fuel.
4. Working principle
◎ Working process:
① ECU calculates the injection amount based on the sensor signal.
② Sends a signal to the solenoid coil of the fuel injector to open the needle valve.
③ The fuel is sprayed out through the spray hole under pressure.
④ After the signal ends, the needle valve closes and stops spraying.
5. Common faults
◎ Blockage: fuel impurities or carbon deposits cause poor fuel injection.
◎ Oil leakage: aging or damage of seals.
◎ Solenoid coil failure: short circuit or open circuit of the coil causes failure to work properly.
◎ Uneven fuel injection: wear or blockage of the spray hole.
6. Maintenance and care
◎ Regular cleaning: Use special cleaning agents to remove carbon deposits and impurities.
◎ Replace the filter: Regularly replace the fuel filter to prevent impurities from entering.
◎ Check the seals: Check the seals regularly and replace aging or damaged parts in time.
7. Technological development
◎ Piezoelectric fuel injector: faster response and more precise control.
◎ Multi-hole fuel injector: improve atomization effect and combustion efficiency.
◎ Intelligent fuel injection system: more precise fuel control through sensors and ECU.
8. Environmental protection and energy saving
◎ Reduce emissions: Reduce harmful gas emissions by precisely controlling fuel injection.
◎ Improve fuel efficiency: Optimize the combustion process and reduce fuel consumption.
Summary
The injector is the core component of the engine fuel system, and its performance directly affects the engine's working efficiency and emissions. Regular maintenance and correct selection of injectors are essential for the long-term stable operation of the engine.
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