ECU (Electronic Control Unit), also known as "trip computer" and "vehicle computer".
ECU must be intelligent enough to have self-diagnosis and detection ability, find faults in the system in time, store fault codes, and inform maintenance personnel of possible fault positions, so as to facilitate maintenance.
For example, the airbag must be opened in time, correctly and quickly at the critical moment, but most of the time the airbag is in standby state, so the airbag computer must have self-checking ability to continuously confirm whether the airbag system works normally.
The model with T can improve the power and torque by more than 20%~30%. In addition, the original model with T generally sets the engine speed at about 1800 before the turbine works. After changing the ECU, the turbine will intervene earlier, about 1500 rpm, so that the torque can be exerted earlier, so the car will be more fuel efficient than the original car.
Functions of automobile electronic control unit (ECU);
1. The function of the electronic control unit is to calculate, process and judge the input information of the air flow meter and various sensors according to its stored programs and data, and then output instructions, provide electric pulse signals with a certain width to the fuel injector, control the fuel injection quantity and conduct electronic control. The device consists of a microcomputer, input, output and control circuits.
2. The electronic control unit collects the working state information of various parts of the engine through various sensors (including temperature sensor, pressure sensor, speed sensor, flow sensor, position sensor, oxygen sensor, knock sensor, etc.). ), the circuit is responsible for transmitting to the electronic control unit.
3. After receiving these signals, ECU analyzes various signals.