BLUETEC Partners Show New T2B5 Diesels at Detroit Show
07 January 2007
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| Full-size SUV Vision GL 420 BLUETEC meets Tier 2 Bin 5 emissions requirements with 24 mpg US fuel efficiency. |
DaimlerChrysler, Audi and Volkswagen, all partners in the BLUETEC clean diesel marketing initiative (earlier post), each showed a new Tier 2 Bin 5 compliant (i.e., able to be sold in all 50 states) BLUETEC model at the North American International Autoshow in Detroit, with promises of more to come.
DaimlerChrysler introduced its MercedesBenz Vision GL 420 BLUETEC; Audi showed its new Q7 3.0 TDI BLUETEC; and Volkswagen had its concept Tiguan on display.
The Vision GL 420 BLUETEC is a full-size SUV featuring a V8 diesel engine, which develops 290 hp (216 kW) and 700 Nm (515 lb-ft) of torque, while delivering fuel consumption of 9.8 liters/100 km (24 mpg US).
For a vehicle the size of the GL 420, Mercedes uses a continuous urea-based Selective Catalytic Reduction (SCR) system with a conversion efficiency of up to 80%. The GL 420 is targeted to go on sale in the US in 2008.
Audi confirmed it will introduce its Q7 3.0-liter TDI SUV in the US in 2008 as well. The Q7 3.0 TDI will be Audi’s first model to showcase Tier 2 Bin 5 compliant BLUETEC technology.
As is DaimlerChrysler, Audi is also using a urea-based SCR emissions aftertreatment system to bring NOx emissions down to the required level. Although the approach is the same, the system and suppliers are different, according to Audi.
The Q7 3.0 TDI delivers 171 kW (232 hp) of power.
Volkswagen is using the same BLUETEC aftertreatment system in its concept Tiguan, according to Audi. (Earlier post.) VW is also testing a “Clean TDI” Jetta with a lean NOx trap for its BLUETEC solution. (Earlier post.) VW will provide more technical details on the concept Tiguan later this spring.
I wonder how will AdBlue refilling will play out with regulators in the next year. DaimlerChrysler's diesel strategy will either or swim on their decision. Even though DeNOx will ensure a 45 state diesel, a 50 state diesel will allow access to the CARB states, that also have the bulk of the wealthier citizens/consumers.
Posted by: allen_Z | 07 January 2007 at 04:27 PM
Only way I would be interested is if it was a very small turbo-diesel Hybrid, getting 80+ mpg.
Posted by: Lucas | 07 January 2007 at 04:45 PM
MB would have more luck getting EPA approval of the SCR system if they promised to build an engine plant in the US and to make the engines available in a range of Chrysler, Dodge and Jeep vehicles.
Posted by: Robert Schwartz | 07 January 2007 at 07:01 PM
2mode hybrid, and BlueTec diesel are two avenues for DaimlerChrysler's trucks, SUVs, and performance cars to survive in this increasingly environmentally conscious, and high energy price environment.
Posted by: allen_Z | 07 January 2007 at 07:20 PM
Afaik EPA and CARB have already relented on their opposition to SCR. This is presumably in recognition of the fact that it is the only viable technology that will permit HDVs to meet the EPA requirement for 80%-90% lower NOx emissions by 2010. The majority of European Euro 4-compliant HDVs already feature SCR today, with no significant technical or compliance problems reported.
First-gen SCR uses a 35% aequeous solution of high-purity urea. The additive tanks used by MB permit operating ranges equal to the regularly scheduled service intervals, so their dealerships can act as distribution points for AdBlue. If and when HDVs in the US feature SCR systems, the additive will also become available at truck stops and regular gas stations that sell diesel (gasoil).
Next-gen SCR systems will feature urea storage in powdered form. It will be transported to the pre-catalyst by an air stream. The conversion to ammonia does not require water anyhow. Such systems have already been proven in labs in Germany. Range per unit volume of additive is roughly triple and there is no need to heat the tank. This will further diminish EPA/CARB's concerns about additive availability.
System defeat strategies (driving without additive, substituting an inert compound etc.) can by now be detected with sufficient confidence by OBD software. This was the other major EPA/CARB concern.
Note that Bluetec refers not just to SCR but also to NOx store catalysts, which are suitable for the less expensive vehicle classes.
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Posted by: karen | 18 March 2007 at 10:45 PM
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Posted by: James | 02 August 2007 at 07:52 PM
Have a Chevy Suburban and tired of 13MPG. Looking into a VW Passat or Jetta TDI diesel. Any suggestions on best year to buy or problems to watch out for would be appreciated. any other diesel cars or trucks I should consider? Thanks Jim
Posted by: Jim | 09 August 2007 at 11:27 AM
I am wondering what happens if you run a bluetec on biodiesel...do you still need to use the urea compound?
wish those wankers would do something better than 25mpg, thats pathetic, we need higher mpg diesels ort diesel hybrids and not more high horsepower dinosaurs
Posted by: Esteban W | 26 August 2007 at 06:00 PM
There needs to be a spam reporting system here that targets more than abuse, perhaps telephone numbers.
I read that the Mazda SCR system doesn't need refilling at all. It makes it's own urea onboard.
I am not sure about the complaint re higher output diesels, as they are making diesels that can replace hi performance petrols with a saving in oil. Plus European car manufacturers offer a variety of diesel sizes in most of their larger cars.
Posted by: EnigmaNZ | 13 September 2007 at 08:34 AM
How is Honda coming along with its 2008 diesel Accord?
Posted by: Robert Warburton | 01 October 2007 at 01:56 PM
I am considering replacing the 3 litre V6 gasoline engine in my 2007 Ford Ranger with a diesel engine.
I am also considering using Vegetable oil to fuel the
diesel. I understand Ford sells a diesel Ranger in
areas other than North America. I would appreciate any info you might have on this type of conversion.
Lucien Lenoire
Posted by: Lucien Lenoire | 04 January 2008 at 08:43 PM
James,
You might consider doing a transplant of a GM diesel with some power pack parts as was done to an old Chevy sedan on one of the TV hop up shows. It reportedly got over 20 MPG while providing a clear performance advantage over the original gasoline V8.
Posted by: ChuckL | 05 January 2008 at 02:42 PM
Editors,
It is time to just automatically remove all advertising posts.
Posted by: ChuckL | 05 January 2008 at 02:46 PM
With the cost of oil and our own people dieing now is the time for our engineers to come up total solution whereby we can have car or suv that can go 150-250mpg if the politician are not puting up this challange then my friend i am afraid and God have mercy on us.
Posted by: Appiah | 10 January 2008 at 06:20 PM
to robert warburton check on the diesel engine you are considering,go to mercedes benz web sites,i think you need an engine made of the materials like 1985 mercedes or older to accomodate veg. oil
Posted by: charles | 13 January 2008 at 08:35 AM