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Commonrail dieselmotoren roken eigenlijk niet. De rook die je ziet als je hem na een stuk rustig rijden intrapt komt van je EGR. Als je de EGR klep ook afdopt zou hij bijna helemaal niet meer moeten roken.

ik heb onderstaande gevonden. Een regeneratie zal dus minimum elke 2000km plaatsvinden.
Een regeneratie lijkt mij niet ideaal zonder filter aanwezig. Kan mij ook niet voorstellen dat er geen error codes gegenereerd worden aangezien de tegendruk nu anders is, zelfs met een goede filter.

This information about the particulate filter system describes how the system works and should help you to address customer concerns about this system.

In March 2004, BMW introduced the largely maintenance-free 2nd generation particulate filter system into the series production of the 525d and 530d as part of technical measures to fulfil the requirements of the EU4 emissions standard in advance. Other models with particulate filters will gradually follow. The particulate filter reduces particulate emissions to the limit of detection. The catalytic coating of the particulate filter, together with improvements in the engine control, ensure that the particulates deposited in the filter over a certain distance are recombusted on a cyclical basis. The particulate filter system essentially comprises the catalytically coated silicon carbide filter, the sensors for the exhaust-gas temperature and exhaust-gas back-pressure, an additional throttle valve in the engine air system and an extensively enhanced engine control.

The system calculates the load status of the particulate filter on the basis of a range of data provided by the engine control system, such as exhaust-gas back-pressure upstream of the filter, fuel consumption, distance driven and driving style. The engine control initiates automatic cleaning (known as regeneration) of the particulate filter where necessary. The exhaust-gas temperature is increased to approximately 600°C upstream of the particulate filter by a variety of engine measures. This increase in temperature is sufficient to combust the particulates deposited in the filter.

This process, which may last between 10 to 15 minutes, is repeated on a cyclical basis, the frequency depending on the driving style (but no sooner than once around every 180 miles (300 km) and no later than once around every 1200 miles (2,000 km)). If regeneration is interrupted by the engine being switched off, regeneration will be resumed with the next driving cycle. However, to achieve the high exhaust-gas temperature required for successful filter regeneration, the parameters for the quantity and location of injections, together with the air mass (reduction in charge pressure), are modified in the engine control such that their values differ from the normal engine tuning. In addition, the transmission shift points on vehicles with an automatic transmission are adjusted to match those of the S program.

Regeneration of the particulate filter always takes place when the engine is at normal operating temperature. In full throttle mode (not kickdown), there is no difference between the engine tuning and normal tuning during regeneration because the exhaust-gas temperatures are sufficient for the deposits in the filter to be burnt off on their own. Even in this driving mode, however, the transmission shift points on vehicles with an automatic transmission are still adjusted to match those of the S program.

The perceptive customer may notice that vehicle characteristics, such as response and noise, are different during particulate filter regeneration. These differences are related to the modified engine tuning during regeneration and do not constitute a technical fault in the particulate filter system or the vehicle as a whole.

The somewhat delayed response under acceleration, mainly at low engine speeds, results from the reduction of intake air by the throttle valve during regeneration, which does not need to open fully again until there is a significant increase in load. The maximum engine power output available remains available even during regeneration.

The modified injection parameters, such as additional post injections, and the increased exhaust-gas temperature during regeneration affect the noise characteristics of the vehicle, especially towards the low-frequency range when the exhaust system is hot. Noises (sizzling) from the exhaust system may occasionally be heard if the engine is switched off during regeneration. These noises are similar to those heard if the vehicle is parked immediately after a period extremely sporty driving. Odours are common when particulate filters on new vehicles undergo their first regeneration, particularly at low road speeds, because coatings applied during production evaporate (also occurs on vehicles without a particulate filter, but at high speeds on the motorway).

The observations described are, as stated above, normal for the particulate filter system and do not constitute a fault.

The existing quality and longevity risks are increased dramatically if performance tuning is carried out on vehicles with a particulate filter. The calculation models for particulate filter system management stored in the DDE do not work correctly if performance tuning is carried out, which inevitably leads to malfunctions and/or damage. We would also like to point out that performance tuning is generally prohibited by BMW. The same applies to the use of bio-diesel/RME. Their use is therefore not permitted on any BMW EU4 vehicle.

Indd, bij mijn weten moet hij wel uitgeschreven worden.

APK is geen probleem, ook zonder DPF komt hij gewoon door de roetmeting.

Goed verhaal,en voor de techneuten meteen helder en duidelijk.. persoonlijk vind ik die 2000 KM wel wat weinig, maar da's daardoor wel veilig voor de lange termijn.

Het APK verhaal klopt deels; roetmeting zal geen probleem zijn, de afwezigheid van een roetfilter wel. Moeten ze dat wel eerst vaststellen uiteraard (net als vroeger met de eerste generatie katalysatoren), maar merkt de keurmeester dat op dan is het een hele duidelijke afkeur.

Ik heb al 3500 km gereden zonder filter en het is mij nog niet opgevallen, maar alles is mogelijk. En of hij nu regenereerd of niet wat maakt het uit? Als je maar van dat vieze verstopte filter af bent

Het uitprogrammeren lijkt inderdaad niet veel uit te maken, hooguit een iets lager brandstofverbruik en lagere uitlaatgastemperaturen