What does the engine control unit (ECU) primarily manage?

The engine control unit (ECU) plays a crucial role in managing key aspects of engine performance, specifically focusing on fuel injection and ignition timing. By optimizing these elements, the ECU ensures that the engine operates efficiently, effectively balancing power output, fuel economy, and emissions levels.

Fuel injection involves controlling the amount and timing of fuel delivered to the engine’s cylinders, which is essential for proper combustion. The timing of the ignition spark is also critical, as it directly influences the efficiency and performance of the engine. By precisely adjusting these parameters in real-time based on various engine conditions, the ECU helps achieve optimal engine performance.

This control mechanism ensures compliance with emissions regulations and improves overall vehicle performance, making it a fundamental function of the ECU in modern vehicles.