The 4-wire inlet pressure sensor is more advanced than the 3-wire one because it has higher accuracy and more reliable stability. The 4-wire intake pressure sensor is available in both analog and digital output types. The analogue output sensor converts the inlet pressure into a voltage signal and transmits this signal to the control unit via a data line; The digital output sensor converts the inlet air pressure into a digital signal and transmits it directly to the control unit via a data cable.
In contrast, digital output sensors have higher accuracy and faster response times. In addition, due to the advantages of strong anti-interference ability and long transmission distance of digital signals, digital output sensors can replace CAN bus transmission methods in some cases, thus simplifying the electrical system structure of the vehicle.
In addition to the advantages in terms of accuracy and stability, the 4-wire inlet pressure sensor also has a self-diagnostic function. When a sensor fails, the control unit can quickly troubleshoot the fault by reading the sensor's fault** to determine the cause of the fault. In addition, the 4-wire intake pressure sensor has a temperature compensation function that can correct the intake pressure at different temperatures, thus improving engine performance and fuel economy.
In short, as an advanced engine control system component, the 4-wire intake pressure sensor has the advantages of high accuracy, good stability, self-diagnosis function and temperature compensation. With the continuous development of automotive technology, the application of 4-wire intake pressure sensors will become more and more extensive.