Does an EFI Engine Need Carbon Deposit Cleaning?
1 Answers
An EFI engine does require carbon deposit cleaning. Carbon buildup in the engine can cause engine shaking and abnormal noises, and in severe cases, it may lead to engine failure to start or even complete engine breakdown. Regular cleaning of engine carbon deposits is necessary, as neglecting this can affect the vehicle's power performance. The working principle of an EFI engine is as follows: 1. Single-point and multi-point injection principles: The single-point injection system (SPI), also known as central fuel injection (CFI), consists of three parts similar to the multi-point injection system: the fuel supply section, the air supply section, and the control section. 2. The fuel supply section includes components such as the fuel tank, electric fuel pump, fuel filter, pressure regulator, and central injector. The electric fuel pump is typically installed inside the fuel tank. The system pumps fuel at a low pressure of 0.1MPa, filters impurities through the fuel filter, and delivers it to the central injector for spraying. 3. The air supply section comprises the air filter, throttle valve, intake manifold, and cylinders. When air is drawn into the throttle valve, it begins to mix with atomized fuel to form a combustible mixture, which is then distributed to each cylinder via the intake manifold. 4. The control section consists of the electronic control unit (ECU) and various sensors. Key sensors include the throttle position sensor, oxygen sensor, and crankshaft position sensor. These sensors send signals back to the ECU, which then issues operational commands to components such as the central injector.
