Exhaust and Differential Pressure Sensors (EDPS) are found in all of today's diesel engines, as well as in a growing number of gasoline engines. Alongside various other diverse engine components, it ensures that exhaust gases comply with today's strict standards.
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Exhaust gas pressure sensors are often installed at several locations along the exhaust line to ensure the correct functioning of various components and to protect them from excessive pressure.
They are often located upstream and downstream of the exhaust gas recirculation valves, where they help ensure the proper exhaust gas recirculation rate and help keep emissions low and engine performance constant.
In diesel engines, pressure sensors are installed before and/or after the diesel particulate filter (DPF). These filters have an optimum operating temperature at which they can efficiently burn the fine particles captured by the filter. A drop in the pressure signal downstream of the DPF indicates that the filter is beginning to fill. To prevent clogging and ensure optimal performance, the pressure sensor sends a signal to the ECU to increase the temperature of the exhaust gases and allow the filter to regenerate, extending the life of these filters.
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