Efi is an acronym that stands for Electronic Fuel Injection. It refers to a system used in modern internal combustion engines to deliver fuel to the engine's cylinders.
The electronic fuel injection system functions by replacing the traditional carburetor, which was used in older vehicles. The EFI system delivers fuel in a precise and controlled manner, resulting in improved engine performance, fuel efficiency, and reduced emissions.
The key components of an EFI system include fuel injectors, a fuel pump, a fuel pressure regulator, an engine control unit (ECU), sensors, and an intake manifold. The fuel injectors deliver atomized fuel directly into the engine cylinders, while the fuel pump delivers fuel from the fuel tank. The fuel pressure regulator ensures that the correct fuel pressure is maintained throughout the system.
The ECU monitors various sensors, such as the oxygen sensor, throttle position sensor, and engine coolant temperature sensor, to determine the optimal fuel-air mixture for combustion. It then controls the amount of fuel delivered by the injectors based on the engine's operating conditions, ensuring efficient fuel delivery and precise control.
Compared to carbureted engines, EFI systems provide several advantages, including improved cold-start capability, better fuel consumption, increased power output, and reduced emissions. EFI has become the standard for most modern vehicles, offering enhanced engine performance and meeting stricter emission standards.
