In Germany, BMW and Total have officially begun the field testing of AdBlue pumps installed at three fueling stations in Munich and Berlin. AdBlue, used in Selective Catalytic Reduction (SCR) NOx aftertreatment systems for modern diesels, is stored in an auxiliary tank in the car. The AdBlue filler neck is found underneath the fuel filler flap or in the engine compartment, depending on the BMW diesel model.
The pump is in lieu of a separate hand-held container of AdBlue, as currently used. Both parties expect to gain new insights into the practice of fueling the auxiliary AdBlue tanks from the field tests—especially from a customer perspective. The experience from the field trial will be used further to develop the AdBlue dispenser technology and to ensure the best user experience, the companies said.
For high acceptance of clean Euro 6 diesel cars, a comprehensive and easy-to-refill infrastructure is necessary. I therefore welcome the exemplary cooperation of BMW and TOTAL for car AdBlue tank technology.—Katherina Reiche, Parliamentary State Secretary at the Federal Ministry of Transport
Since September 2014, the Euro 6 emissions standard is mandatory for all new passenger car type approvals. From September 2015 all new cars must meet the Euro 6 emissions standard to meet the criteria for admission. The standard specifies a reduction in nitrogen oxide emissions by more than half compared to Euro 5.
|Filler neck for AdBlue (left) and diesel fuel (right). Click to enlarge.||AdBlue pump nozzle. Click to enlarge.|
The BMW Group’s basic technology for diesel exhaust aftertreatment to attain Euro 6 emissions is a maintenance-free NOx storage catalytic converter (NSC). Depending on the vehicle concept and associated drive train, this NSC technology is combined with SCR using AdBlue. The combination of NSC and SCR technology combines the optimum temperature ranges of both technologies.
The SCR technology helps to reduce emissions particularly of large diesel vehicles.—Ing. Fritz Steinparzer, head of diesel engine development in the BMW Group
With SCR technology, the liquid resources AdBlue is mixed with exhaust aftertreatment. This is carried in an auxiliary tank that needs to be replenished from time to time. The maximum range of a tank of AdBlue depend on personal driving styles and is usually approximately 15,000 km (9,300 miles), according to BMW.