Where is the Qi Chen T70 intake pressure sensor?

Qichen T70 intake pressure sensor is above the intake manifold to prevent water accumulation. One of the three wires is 5 volts, one is a 5 volt return wire, which is the negative wire, and the other is the signal wire of Ecu. The vacuum tube is connected to the intake manifold. Under different engine speed loads, the vacuum change in the intake manifold is sensed, and then it is converted into a voltage signal from the internal resistance change of the sensor for ECU to correct the fuel injection quantity and ignition timing angle.

Working principle of intake pressure sensor

The intake pressure sensor detects the absolute pressure of the intake manifold behind the throttle. It detects the change of absolute pressure in the manifold according to the engine speed and load, and then converts it into signal voltage and sends it to the ECU. The ECU controls the basic fuel injection quantity according to the signal voltage.