Diesel Particulate Filter Differential Pressure Sensor

The temperature sensor upstream of dpf monitors exhaust temperature during regeneration.

Diesel particulate filter differential pressure sensor.

Differential pressure sensor delta p for particulate filter applications the pressure sensor described underneath is mainly used to monitor the soot loading of a particulate filter on a diesel engine or gas turbine. When a code p244b is stored you may assume that the powertrain control module pcm has detected an input signal from the circuit of the diesel particulate filter dpf pressure sensor indicating that differential pressure is too high. What does code p244b mean. Raney s info toll free.

The most common diesel particulate filters in widespread use are cellular ceramic honeycomb filters with channels that are plugged at alternating ends as shown in figure 1. The ends of the filter plugged in a checkerboard pattern force the soot containing exhaust to flow through the porous filter walls. The dpf differential pressure sensor detects the difference between the exhaust pressure upstream and downstream of the diesel particulate filter by means of the exhaust pressure sampling pipes upstream and downstream of the dpf.