Are ECUs Installed in All Vehicles Now?

The function of the electronic control unit is to calculate, process, and judge the information input by the airflow meter and various sensors according to the programs and data in its memory, and then output instructions to provide a certain width of the electrical pulse signal to the fuel injector to control fuel injection the amount.

At present, all computers are basically equipped with ECU, also called driving computer, which is one of the most critical core components of digital vehicles.

The ECU of a vehicle will include several units, which adjust different areas separately, and each ECU unit will exchange information. Although the vehicle ECU is becoming more and more complex, the most general composition will not change. There are large-scale integrated circuits such as microprocessors, memories, input/output interfaces, analog-to-digital converters, and drivers.

The vehicle's ECU is well-recognizable in appearance. It is an adjustment element shaped like a square box. There are many dense slots around it to connect various input and output circuits, monitor each attribute of the vehicle at any time and follow the settings. A good program adjusts the vehicle.

The basic functions of the ECU mainly include the following:

1. Provide a standard voltage to the sensor, accept the information input by various sensors and other devices, and convert it into a digital signal that the microcomputer can accept.

2. Store the characteristic parameters of the vehicle type and relevant data information required for calculation.

3. Determine the program required to calculate the output instruction, and calculate the output instruction value based on the input signal and related programs.

4. Compare the input signal and output command signal with the standard value, determine and store the fault information.

5. Output instructions to actuators or output stored information in accordance with instructions.

6. Self-correction function, that is learning function.

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