Pos. | spare part no | Name |
1 | - | High pressure connection |
2 | - | Low pressure connection |
3 | - | electrical connector |
The differential pressure sensor is located in the engine compartment on the lower right side of the bulkhead. The sensor is mounted on two studs and secured with nuts.
The differential pressure sensor is used by the software to monitor the status of the DPF. The two pipes on the sensor are connected by pipes to the inlet and outlet side of the DPF. The tubes allow the sensor to measure intake and exhaust DPF pressure.
As the amount of particulate matter captured by the DPF increases, the pressure on the intake side of the DPF increases compared to the exhaust side. The DPF software uses this comparison in combination with other data to calculate the accumulated number of trapped particles.
By measuring the pressure difference between the DPF inlet and outlet and the DPF temperature, the DPF software can determine if the DPF is clogged and needs to be regenerated.
DPF temperature sensors
The DPF system uses two temperature sensors. One is located in the exhaust elbow of the turbocharger, next to the HO2S sensor, and the second sensor is located on the inlet DPF.
The sensors measure the exhaust gas temperature at the outlet of the turbocharger and before passing through the DPF and provide the information needed to calculate the DPF temperature.
This information is used in conjunction with other data to calculate accumulated particulate matter and to control DPF temperature.
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