What does DPF pressure sensor do?
A diesel particulate filter (DPF) differential pressure sensor measures exhaust backpressure and signals when the power-train control module (PCM) should begin a regeneration process to clear the filter of diesel particulate matter (DPM), or soot.
How does an exhaust pressure sensor work?
The Exhaust Gas Pressure Sensor is a Differential Sensor measuring the pressure difference between gas in the intake and the outtake of the Particulate Filter. The outtake may be directly set to ambient pressure depending on the model.
How do I clear a blocked DPF?
DPF cleaning is the most effective way to clear a blocked DPF filter. Flash cleaning a blocked DPF will completely remove the build-up of soot and exhaust residue, ensuring increased performance and economy. Flash cleaning your DPF completely removes PM10 residues, oil and cerium.
Can you drive with a blocked DPF?
Can you ignore the DPF light and carry on driving? Technically yes, but we would not recommend it. If you ignore the DPF light and continue driving, the build-up of soot will soon reach a point whereby your car has to enter ‘limp-home’ mode in order to prevent any damage to the engine.
How is the DPF sensor used in the exhaust system?
The DPF sensor is used to measure the amount of soot that is being emitted from your exhaust system. They do this by measuring the pressure differential of the exhaust gas before and after the DPF. This simply means they take a pressure reading before the DPF and a pressure reading after the DPF and find the difference.
What is differential pressure sensor Delta-P used for?
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. The signal of the sensor is not sufficient to determine an optimized timing for regeneration of the DPF.
How does the ECU work on a DPF filter?
Typically the ECU monitors one or more sensors that measure back pressure and/or temperature from the dpf, and based on pre-programmed set points the computer makes decisions on when to activate the regeneration cycle or not as the case may be !
What do you need to know about DPF filters?
Heat is the key to all things dpf….with the various forms of regeneration all attempting to raise temperatures in the exhaust to a level where the soot can re-combust to completion and then become ash which is then expelled from the exhaust… Regeneration is better thought of as a secondary burn process so what is it exactly ?