Functional description
WARNING: This page does not describe the selected car, but rather 45 other vehicles, including the 2016 BMW M5, 2016 BMW 550i xDrive, 2016 BMW 550i, 2016 BMW 535i xDrive, and 2016 BMW 535i. However, it is still accessible from the selected car via links, so may be relevant.
The diesel particulate sensor consists of a measuring probe and evaluation electronics.
Deposited soot particulates form electrical paths between electrodes on which a current flows. This signal is evaluated by the evaluation electronics. From this, the evaluation electronics determines the functional capability of the diesel particulate filter to store particulates.
The evaluation electronics forwards these signals to the Digital Diesel Electronics (DDE). The evaluation electronics of the diesel particulate sensor communicates with the engine control via a local CAN bus.
The measuring probe is regularly regenerated by heating up. The deposited soot particulates are then burnt off.
| Item | Explanation |
|---|---|
| 1 | Measuring probe of the diesel particulate sensor |
| 2 | five-pin plug connection |
| 3 | Evaluation electronics of the diesel particulate sensor |
| 4 | 4-pin plug connection |