Engine-proximate diesel particulate filter DDE6.0 - M47TÜ2

To comply with the EU4 legislation taking effect as of 2005, a coated diesel particulate filter is necessary on certain vehicles.
This diesel particulate filter separates the soot particles in the exhaust gas with high efficiency (> 95 %). The diesel particulate filter has no influence on the nitrogen oxide (NOx) emissions; these are reduced by measures inside the engine.
The particulate filter system used at BMW requires no maintenance and is designed to last the service life of the vehicle. A fuel additive for filter regeneration is not necessary.

The diesel particulate filter of the M47TÜ2 on the new models 118D, 318D, 120D and 320D is fitted close to the engine and is located together with the oxidation catalytic converter in one housing. On the new models 520D and X3 2.0D, this component is located in the underbody of the vehicle.

The filter element consists of a ceramic monolith made of silicon carbide that is resistant to high temperatures. The filter element is 50 % porous and has been given a platinum-based, catalytic coating. This coating ensures that the soot ignition temperature is reduced, thus ensuring good regeneration properties of the particulate filter.

Changes for the particulate filter system

For the actual function of the diesel particulate filter, the following changes have been added:

• Exhaust system with catalyst coated soot particle filter and oxidation catalytic converter in one housing
  
• Throttle valve for exhaust gas temperature increase within the engine
  
• An exhaust gas temperature sensor for initiating the filter regeneration
  
• An exhaust backpressure sensor to estimate the filter load while the vehicle is being driven
  
• Extended software of the engine management system
  

Use

The use of a diesel particulate filter complies with the standard EU4. This exhaust emission regulation came into force in the years 2005. The diesel particulate filter is used in the engine M47TÜ2 for the first time in the following:

- E87, E90: From 03/2005

- E83, E60: From 09/2005

See also BMW Technology:

TIS -> Document -> SI Technology -> Enter SBT Number

SBT numbers:

11 06 04117 and 18 02 03062