A model based totally at the motive stress profile, which calculates saturation constant with a particular pattern of indicators coming from the temperature transmitters of the exhaust gas similarly to the oxygen sensor.

A version based at the drift resistance of the DPF, which calculates saturation regular with alerts reassembled with the aid of the differential strain sensor, temperature transmitters, and air waft meter, which then all inform the ECU of the degree of saturation inside the DPF.

What is dpf

The pressure sensor measures the distinction in strain some of the inlet and the hole of the DPF, the distinction in stress similar to the degree of saturation in the filter out. The greater the filter out is clogged, the higher the voltage (in volts) transmitted through the sensor to the ECU. At a selected voltage, orresponding to the amount of carbon debris (grams), the ECU will set off pressured regeneration of the DPF with the aid of using raising the temperature of the exhaust fuel to 1020°F/1200°F.

To advantage this increase in temperature, the ECU will perform numerous movements:

Regulating the glide of air thru the virtual throttle manipulate (ETC).

Deactivating the EGR valve from recycling exhaust gases so you can boom the combustion temperature.

Triggering a primary submit-injection following the maximum critical injection a good way to boom the combustion temperature.

Triggering a 2nd located up-injection, causing the unburned fuel to evaporate within the combustion chamber. dpf filter cleaner The unburned hydrocarbons are oxidized through the vapor within the catalyst converter. The warmth generated at some stage in this level can advantage temperatures of 1140°F within the DPF.

The transmitter signal, placed upstream of the DPF, is utilized by the ECU to determine the quantity of gasoline to be injected in the 2nd placed up-injection.

On very brief drives, it is not viable to reach the temperature had to regenerate the DPF. If the saturation degree reaches a threshold of 24 grams, the indicator lights at the DPF will cluster.

This signal turns on the reason force to perform a regeneration route; this is, to run the automobile at immoderate speeds over a excellent distance that lets in you to attain temperatures enough for the regeneration of the DPF.

Regen run massive

Manual regeneration

If the forced regeneration isn’t a achievement and saturation has handed the brink to a degree of 40 grams, further to the arrival of the glow plug and engine mild warning signs (see beneath), it is vital for the cause pressure to take the car to the dealership or a garage.