In a basic fuel system, which component opens to allow fuel to spray into the intake ports?

In a basic fuel system, which component opens to allow fuel to spray into the intake ports?

• A. Fuel rail
• B. Fuel injector
• C. Fuel pump
• D. Fuel line

Answer: (B)

Fuel metering and atomization in port fuel injection rely on the injector. The injector sits at each intake port and opens briefly under ECU control to spray a fine mist of fuel into the incoming air. This spray is what mixes with the air before entering the cylinder, allowing precise fuel delivery. The fuel rail maintains the high-pressure supply to the injectors, the fuel pump pushes that fuel through the system, and the fuel line is just the path for fuel. None of those components spray fuel on their own, so the injector is the part that actually opens to spray into the intake ports.

Fuel metering and atomization in port fuel injection rely on the injector. The injector sits at each intake port and opens briefly under ECU control to spray a fine mist of fuel into the incoming air. This spray is what mixes with the air before entering the cylinder, allowing precise fuel delivery. The fuel rail maintains the high-pressure supply to the injectors, the fuel pump pushes that fuel through the system, and the fuel line is just the path for fuel. None of those components spray fuel on their own, so the injector is the part that actually opens to spray into the intake ports.