What is the function of automobile pressure sensor?

The intake pressure sensor can sense the intake pressure at that time, and after feeding it back to the ECU, the ECU instructs the execution system: 1 to adjust the camshaft to control the opening angle and timing of the intake throttle, that is, the VVT system (variable throttle system);

2. Adjust fuel injection timing and control intake harmonic wavelength to make intake smoother;

3. Intake pressure sensor, referred to as MAP. It connects the intake manifold with a vacuum tube. With the different engine speed load, it senses the change of vacuum degree in the intake manifold, and then converts it from the change of internal resistance of the sensor to a voltage signal for the ECU computer to correct the fuel injection quantity and ignition timing angle. That is to say, the ECU computer outputs 5V voltage to the intake pressure sensor, and then the voltage value is detected by the signal terminal. When the engine is idling, the voltage signal of the computer is about 1- 1.5V, and when the throttle valve is fully open, the voltage signal is about 4.5v. ..

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