Method for checking function of charging pressure controller in motor car, involves comparing charge pressure with stored values in control device, and generating error signal if difference of charge pressure value exceeds threshold value

摘要

The method involves increasing engine speed to a higher constant value, and closing a thrust air circulating valve (60). A bypass valve (32) is opened or closed independent of charging pressure. A charge pressure value is detected by a charge pressure sensor (62). The bypass valve is closed or opened to detect charge pressure according to defined wait time if necessary. The charge pressure value is compared with stored values in an engine control device (36). An error signal (F1) is generated if a difference of the detected charge pressure value exceeds a threshold value.