Roll forward to last week and I'm on the motorway when the dreaded DPF light came up. I dusted off the Carly and read the fault codes: 0452A - Info: Particulate Filter System. 04D4A - Particulate Filter System. 04A54 - Glow plug cylinder 2, Control. Checking the data and Ash Levels are now 66.71 and Soot Levels 5.09. There have been numerous reports of DPFs resisting regeneration if they get too full, and requiring a manual forced regeneration. For the DPF to have filled up completely to the point where regeneration was impossible within only 65,000 miles suggests some major bad juju going on there. I drive 100,000 miles a year (actually in 49 weeks). 99% is all 65-75 mph. Just turned over 212,000 and my drivetrain malfunction light came on. One code that came on when I scanned it was "DPF: maximum mileage of the filter exceeded." Another code was the "SCR system: efficiency too low (filling level control, as well as SCR "metering") During a DPF regeneration the DPF itself and the exhaust get extremely hot, this can result in some unusual smells, especially if the car is new. In order to generate the heat required to burn off the stored soot inside the DPF the car essentially over-fuels and increase the engine RPM at idle, this can cause a temporary change in the driving
When the DPF filter reaches about 45% blockage the filter will begin “active regeneration” this means that the EGR (Exhaust gas Recirculation) valve is closed, the boost pressure from the turbo is increased slightly along with a slightly higher idle RPM. Diesel is then injected into the cylinders just after combustion so that it enters the
BMW states in DIS57 that the DPF regen requires; 10 litres of Diesel in tank Coolant temp to be over 75c Constant 40mph road speed Most DPF regen issues are caused by faulty coolant thermostats and constant short journeys, both resulting in engine temperatures not going over 75c, so the regen process does not happen resulting in a heavily clogged DPF.
Diesel Particulate Filter Regeneration. DPF regeneration usually happens automatically. To be able to regenerate, the component needs to reach extreme temperatures. This is achieved when the vehicle is operated at speeds above around 40 mph (the exact speed may vary depending on the vehicle). Once the cause is diagnosed and repaired, the DPF can usually be cleaned by initiating a manual/forced regeneration. This is done using our Mercedes diagnostic PCs. We see a 80% success rate with manual or forced regenerations. If a manual DPF regeneration is not successful, the DPF can be removed and cleaned in a liquid bath solution.
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Regeneration, or regen, of the DPF filter is the process that burns the soot accumulation that is inside the DPF filter. Educating yourself on what a forced regeneration is and how it works will help you understand your aftertreatment system better. Forced regeneration is performed when a diagnostic scan tool starts the regeneration process. Diesel Engine Regen. The parked regeneration is a regular procedure for diesel engines that get to the point where passive regens are not keeping the DPF (diesel particulate filter) clean. The differential pressure sensors will signal the motor control module MCM to alert the driver with an amber light on the dash that a parked regen is required.
For the car to regenerate the DPF, certain criteria need to be hit. These are: at least 10L of fuel – ideally above 1/4 of a tank of fuel. A journey of 20-30 minutes of driving at speeds of above 40mph. Engine must be up to temperature. The problem arises when the car fails to regenerate the DPF. The exhaust becomes blocked and this triggers
DPF Regeneration To combat the fact that many diesel car drivers are not driving in a way that allows passive DPF regeneration, many manufacturers have designed an active regeneration process. This takes place when the DPF filter reaches a certain point of gathered soot, and the ECU will provide a fuel injection into the engine to increase The Lindemann Diesel Boost, for example, is a perfect cleaning and protection additive for the DPF, but also for other parts such as the fuel system, the turbo and the EGR valve. This product increases the cetane number, which results in a more optimal combustion. The result is considerably less soot formation. Connect MX808 with OBD firstly. Before attempting a DPF regeneration, select “Auto scan” to scan the vehicle for engine codes, the DPF regeneration cannot occur while codes are present. Go to. Service >> DPF >> Hot functions >> DPF (Diesel Particulate Filter) manual regeneration >> Yes >> F-350 >> OK. Make sure the following initial fsKs.
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    • how does bmw dpf regeneration work