GL 320 CDI (164.822) V6-3.0L DSL Turbo (642.940) (2008)
/v6-3.0l_dsl_turbo_(642.940)/Page-1173001.png)
Exhaust Pressure Differential Sensor: Description and Operation
GF07.04-P-6121GZ Component Description For The Diesel Particulate Filter Pressure Differential Sensor
-
with CODE (474) Particulate filter
Location
The differential pressure sensor (DPF) is located in the left transmission tunnel at the transmission output flange.
Task
The differential pressure sensor (DPF) detects the exhaust pressure differential upstream and downstream of the diesel particulate filter (DPF).
The CDI control unit (N3/9) uses the pressure differential to determine the particulate matter (particles) (PM) and ash formation of the diesel particulate
filter (DPF).
Design
The pressure differential sensor (DPF) consists of a piezo resistant pressure sensor element, the electronics for signal amplification and the temperature
compensation. All components are integrated together on a silicon chip. The silicon chip is protected against corrosion by means of a protective gel and
it is cast into the plastic housing.
Function
The pressure differential sensor (DPF) determines the pressure difference upstream and downstream of the diesel particulate filter (DPF) via the exhaust
