What is the working principle of the intake pressure sensor?
1 Answers
The working principle of the intake pressure sensor: It detects the changes in the absolute pressure in the intake manifold based on the engine speed and load, then converts it into a signal voltage and sends it to the engine control unit. The engine control unit uses this signal voltage to determine the basic fuel injection quantity. There are various types of intake pressure sensors, including piezoresistive and capacitive types. Due to its fast response time, high detection accuracy, small size, and flexible installation, the piezoresistive type is widely used in D-type injection systems. The pressure sensor measures pressure using a pressure chip, which is the core component of the sensor.