ABS is an anti-lock braking system. During the braking process, the wheel speed sensor continuously transmits wheel speed signals to ECU, and ECU makes logical judgment, analysis and calculation on these signals. EPcU electronic control unit, also known as "trip computer" and "vehicle computer".
In terms of use, it is a special microcomputer controller for automobiles, also called a special single chip microcomputer for automobiles. It consists of microprocessor (CPU), memory (ROM, RAM), input-output interface (I/O), analog-to-digital converter (A/D) and large-scale integrated circuits such as shaping and driving. The function of the electronic control unit is to calculate, process and judge the information input by the air flowmeter and various sensors according to the programs and data in its memory, and then output instructions to provide the fuel injector with electric pulse signals with a certain width to control the fuel injection quantity. The electronic control unit consists of a microcomputer, input, output and control circuits.