What role does the engine control unit (ECU) play in fuel injection systems?

The engine control unit (ECU) plays a crucial role in fuel injection systems by regulating the duration and operation of the fuel injectors. The ECU receives data from various sensors within the engine, such as those monitoring air intake, temperature, and engine speed. Based on this information, the ECU calculates the optimal amount of fuel to inject into the engine cylinders to achieve the best performance, emissions, and fuel efficiency.

This regulation involves adjusting the timing and duration of the fuel injector pulses, ensuring that the correct amount of fuel is delivered according to the engine's needs under different operating conditions. This precise control is essential, as it directly impacts the engine's overall efficiency, power output, and emissions levels. By managing these parameters effectively, the ECU enhances the performance of the fuel injection system.