Where is the EGR valve located on a Ford?
Where is the EGR valve located on a Ford?
The orifice is positioned between two hose ports coming off the tube which are connected to the DPFE sensor with special heat-resistant hoses. When the EGR Valve is open, a pressure differential is created across the orifice (intake manifold pressure vs. exhaust pressure).
How is the Ford dpfe / EGR system controlled?
The Ford DPFE/EGR system is controlled by the Powertrain Control Module (PCM). The system employs an EGR Valve, an Electronic Vacuum Regulator (EVR), and a Delta Pressure Feedback EGR sensor (DPFE). The DPFE Sensor measures EGR flow across an orifice located inside the special EGR Tube.
Where does exhaust gas go in a Ford dpfe?
The vacuum pulls up on the diaphragm, lifting the pintle off the pintle seat. With the pintle off its seat, exhaust pressure forces exhaust gas up through the EGR tube, the EGR valve, and into the intake manifold at port 4. On the way up to the EGR valve, the exhaust gas passes through a restriction.
How does a delta pressure feedback ( dpfe ) EGR work?
• a Delta Pressure Feedback EGR (DPFE) that measures the change in exhaust pressure before and after a restriction in the exhaust tube that leads up to the EGR valve. When certain driving conditions are met and the computer wants exhaust gas recirculation, it provides a pulsing voltage to the electronic vacuum regulator (EVR).
The Ford DPFE/EGR system is controlled by the Powertrain Control Module (PCM). The system employs an EGR Valve, an Electronic Vacuum Regulator (EVR), and a Delta Pressure Feedback EGR sensor (DPFE). The DPFE Sensor measures EGR flow across an orifice located inside the special EGR Tube.
The orifice is positioned between two hose ports coming off the tube which are connected to the DPFE sensor with special heat-resistant hoses. When the EGR Valve is open, a pressure differential is created across the orifice (intake manifold pressure vs. exhaust pressure).
The vacuum pulls up on the diaphragm, lifting the pintle off the pintle seat. With the pintle off its seat, exhaust pressure forces exhaust gas up through the EGR tube, the EGR valve, and into the intake manifold at port 4. On the way up to the EGR valve, the exhaust gas passes through a restriction.
• a Delta Pressure Feedback EGR (DPFE) that measures the change in exhaust pressure before and after a restriction in the exhaust tube that leads up to the EGR valve. When certain driving conditions are met and the computer wants exhaust gas recirculation, it provides a pulsing voltage to the electronic vacuum regulator (EVR).
