What component controls the fuel injection system in small crafts?

The electronic control module (ECM) is the component that controls the fuel injection system in small crafts. The ECM is essentially the brain of the engine management system. It receives input from various sensors throughout the engine, including temperature sensors, throttle position sensors, and air flow sensors. Based on this data, the ECM calculates the optimal fuel-air mixture needed for efficient combustion and then signals the fuel injectors to deliver the appropriate amount of fuel into the engine.

This precise control of fuel injection is crucial for multiple reasons: it enhances engine performance, improves fuel efficiency, and reduces emissions. The ECM continually adjusts the injection process based on changing conditions such as engine load and atmospheric conditions, ensuring that the engine runs smoothly and efficiently under a variety of operating circumstances.

In contrast, while the fuel pump is essential for delivering fuel from the tank to the engine, it does not control the timing or amount of fuel injected. The throttle body regulates airflow into the engine, influencing how much power the engine produces but is not directly responsible for fuel injection control. The ignition coil generates the spark necessary to ignite the fuel-air mixture but, similarly to the fuel pump and throttle body, does not play a role in controlling the injection process itself. Thus, the ECM is crucial