How does an ECU work?

[VonBrayden]

ECU works by processing, computing, and judging the information input from the air flow meter and various sensors based on the programs and data stored in its memory, then outputting commands to provide the fuel injector with electrical pulse signals of a certain width to control the fuel injection volume. Here is some related information about ECUs: 1. Composition: Similar to a regular computer, an ECU consists of a microcontroller (MCU), memory (ROM, RAM), input/output interfaces (I/O), analog-to-digital converters (A/D), as well as shaping and driving circuits, all made up of large-scale integrated circuits. 2. Network System: In some mid-to-high-end vehicles, ECUs are not only used in the engine but can also be found in many other places. For example, systems like the anti-lock braking system (ABS) are equipped with their own ECUs. As automotive electronics and automation continue to advance, the number of ECUs will increase, and the circuitry will become more complex. To simplify the circuit and reduce costs, a technology called multiplex communication network is used to transfer information between multiple ECUs in the vehicle, forming a network system known as the CAN data bus.