ECU (Electronic Control Unit), also known as “driving computer”, “vehicle computer”, etc.
The CPU is the core part in the ECU. It has the functions of calculation and control. When the engine is running, it collects the signals of various sensors, performs calculations, and converts the results of the calculations into control signals to control the work of the controlled object.
Like ordinary computers, it consists of large-scale integrated circuits such as microprocessors (MCU), memories (ROM, RAM), input / output interfaces (I / O), analog-to-digital converters (A / D), and shaping and driving composition. To put it simply, “ECU is the brain of the car.”
ECUs are generally equipped with fault self-diagnosis and protection functions. When the system fails, it can also automatically record fault codes in RAM and use protective measures to read alternative programs from the above-mentioned inherent programs to maintain engine operation. At the same time, these fault information will be displayed on the instrument panel and remain on, so that the owner can find the problem in time and drive the car to the repair shop.
Under normal circumstances, the RAM will also continuously record your driving data. It is a learning program that becomes the ECU and provides the best control state to suit your driving habits. This program is also called adaptive program.