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Lesson 7: Fuel systemI.. Mission- Supplying fuel and clean air into the engine cylinder in the form of a mixture, with the appropriate quantity and mixture ratio suitable for the engine''''
Trang 1HANOI UNIVERSITY OF INDUSTRY
STRUCTURE OF THE INTERNAL COMBUSTION ENGINE
Hanoi 03/2024
Trang 2Phone: 0973361368
Trang 3Lesson 7: Fuel system
I Mission and classification1 Mission
- Supplying fuel and clean air into the engine cylinder in the form of a mixture, with the appropriate quantity and mixture ratio suitable for the engine's operation mode.
Trang 4II Fuel system using a carburetor
1 Components and Functions
- Fuel Tank: Used to store gasoline.
- Fuel Filter: Located between the fuel tank and the fuel pump, it is responsible for cleaning and filtering the gasoline, removing dirt and debris from the fuel The fuel filter must be periodically replaced to keep it clean.
- Fuel Pump: Its role is to draw gasoline from the fuel tank to the carburetor.
- Carburetor: Functions to mix gasoline with air to create the fuel-air mixture to supply to the engine.
- Air Filter: Cleans the air before go to the carburetor.Intake Pipe
Exhaust PipeMuffler
Fuel Line
Trang 5Lesson 7: Fuel system
II Fuel system using a carburetor
Trang 6II Electronic fuel injection (EFI) system
1 Components and Functions
- Electronic fuel injection (EFI) system is a pre-programmed system to adjust the fuel injection process into the engine according to each engine load condition.
- Sensors: detect changes in engine parameters (temperature, RPM ) and convert them
into electrical signals sent to the ECU.
- ECU (Engine Control Unit): receives signals from sensors to control the fuel for various
- Pressure regulator: maintains stable fuel pressure in the injectors.
- Fuel injectors: valve-shaped and controlled by signals from the engine's ECU.- Pressure control valve: adjusting fuel pressure into the injectors.
Trang 7Lesson 7: Fuel system
II Electronic fuel injection (EFI) system
1 Working principles