The intake pressure of Peugeot 307 engine is too high.

The intake pressure of Peugeot 307 is within the normal range of 40-80KPA. Intake pressure refers to the average absolute pressure of the engine cylinder before the intake valve during the intake process. The intake pressure sensor is connected to the intake manifold through a vacuum tube, and the vacuum tube senses the change of the vacuum degree of the intake manifold with the engine speed load, and then converts the change of the internal resistance of the sensor into a voltage signal for ECU to correct the fuel injection quantity and ignition timing angle. The influence of main parameters of intake pipe on engine intake performance can be summarized as follows: inlet diameter of intake pipe; Intake manifold diameter; Length of intake manifold; Volume of pressure stabilizing cavity. Inlet diameter of intake pipe: determines the total intake volume, which is determined according to the throttle diameter. Inlet manifold diameter: determines the air intake of each cylinder, which is determined according to the inlet diameter of the air inlet. Intake manifold length: the role of dynamic effects. In the optimization calculation of intake pipe, it is optimized as a target parameter. The volume of the voltage stabilizing cavity: affecting the wave (resonance) effect. Proper volume of the pressure stabilizing cavity can not only improve the charging efficiency by using the fluctuation effect, but also make the pressure environment in the pressure stabilizing cavity relatively stable, which provides a good condition for using the dynamic effect, eliminates the mutual interference of the intake of each cylinder and improves the intake uniformity.