Differential Pressure Feedback Electronic EGR Sensor

Differential Pressure Feedback Electronic (DPFE) EGR Sensor:

The Differential Pressure Feedback EGR (DPFE) transducer/sensor is a ceramic capacitive-type pressure sensor. Exhaust pressure or vacuum is converted into a proportional analog voltage signal, which is digitized by the Electronic Control Assembly (ECA). The DPFE sensor also monitors pressure in the exhaust system to allow for an accurate assessment of EGR flow requirements. The ECA uses the signal received from the DPFE transducer to compute optimum EGR flow rate, as well as to monitor EGR flow.