'Clean' Mercedes Diesel too Dirty for Five US States - Mercedes-Benz Forum

 
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post #1 of 9 (permalink) Old 08-31-2006, 09:54 PM Thread Starter
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'Clean' Mercedes Diesel too Dirty for Five US States

Mercedes-Benz's much trumpeted E320 Bluetec diesel has failed to meet the emissions standards required for sale in green-minded California and four other states in the USA. Mercedes had hoped that Bluetec technology would establish the brand as a maker of clean, low-emissions diesels as the US market slowly turns towards higher-economy vehicles, but potential buyers in wealthy Maine, Massachusetts, New York and Vermont, as well as highly pollution-conscious California, won't be able to buy that version of the E-Class.

The Bluetec system includes injection of the AdBlue fluid, an aqueous urea solution, into the exhaust tract; this reduces nitrogen oxide emissions to hydrogen and water. In combination with an exhaust gas catalyst, a particulate filter, the latest common-rail piezo-injection technology and low-sulphur diesel fuel, the system is claimed to make the E320 CDI 'the cleanest diesel vehicle in the world', according to Mercedes. However, the testing authorities have clearly decided that it is not quite clean enough.

This decision may now delay sales of the GL 320 CDI and other upcoming DaimlerChrysler diesels, such as the Jeep Grand Cherokee, in the US. It could also delay development of the hybrid diesel-electric powertrains which Mercedes is currently working on. Sales of Bluetec diesel models in Europe are unlikely to be affected, however; the first of these will arrive by 2008.

The US Environmental Protection Agency is said to be drawing up a series of regulations for urea-injection and other such emissions-control technologies, including guidelines for owner safety and monitoring of fluid levels. This is in preparation for new diesel emissions legislation to come into force in the US in 2010, which will require diesels to meet similar emissions standards to petrol models. article continues below

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post #2 of 9 (permalink) Old 08-31-2006, 11:43 PM
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DANG. What went wrong? Didn't MB engineers see what they are doing?
Anyway, the MB diesels will be available in CA, just like Jetta tdi are.
My neighborhood VW has new black Jetta tdi listed for $33k.
MSRP is $17k
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post #3 of 9 (permalink) Old 09-02-2006, 12:48 AM
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thats a bummer since we were gonna trade my wife's sentra for a new diesel grand cherokee

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post #4 of 9 (permalink) Old 09-02-2006, 09:28 AM
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Originally Posted by Kajtek1
My neighborhood VW has new black Jetta tdi listed for $33k.
MSRP is $17k
Whats 0-60 on these ? 15 seconds ?

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post #5 of 9 (permalink) Old 09-02-2006, 11:45 AM
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Originally Posted by Kirill
Whats 0-60 on these ? 15 seconds ?
It could be 15 seconds for a TDI Jetta (mind you, the US is getting the slowest of the Jetta diesel engines only - there are much faster versions avaialble in Europe). But for the Merc diesel engines - they are much better performing and not as thirsty as the petrol ones.

You can buy an Merc SL400 in the Europe (using a 3-gen twin-turbo diesel V8) that gets 315 bhp and 538 lb. ft. of torque. 0-62mph time reported by Merc is 5.8 sec, compared to 6.3 sec for a stock SL500.

Imagine this diesel SL400 upgraded by AMG. Hmmm... This could really be sweet...

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post #6 of 9 (permalink) Old 09-02-2006, 03:14 PM
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Quote:
Originally Posted by one.bofh
It could be 15 seconds for a TDI Jetta (mind you, the US is getting the slowest of the Jetta diesel engines only - there are much faster versions avaialble in Europe). But for the Merc diesel engines - they are much better performing and not as thirsty as the petrol ones.

You can buy an Merc SL400 in the Europe (using a 3-gen twin-turbo diesel V8) that gets 315 bhp and 538 lb. ft. of torque. 0-62mph time reported by Merc is 5.8 sec, compared to 6.3 sec for a stock SL500.

Imagine this diesel SL400 upgraded by AMG. Hmmm... This could really be sweet...

I think a SLK CDI has three turbos, one for a specific range of engine speed.

http://www.automobilemag.com/reviews...slk_sl_diesel/

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post #7 of 9 (permalink) Old 09-02-2006, 05:12 PM
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Originally Posted by ScrazySean
I think a SLK CDI has three turbos, one for a specific range of engine speed.

http://www.automobilemag.com/reviews...slk_sl_diesel/
Right from the article you referenced:

"Engine: (SLK) Tri-turbocharged 3.2L diesel V-6, 282 hp, 465 lb-ft;
(SL) Twin-turbocharged 4.0L diesel V-8, 311 hp, 539 lb-ft"

Tri-turbo for SLK, Twin-turbo for SL...

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post #8 of 9 (permalink) Old 09-02-2006, 05:55 PM
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Quote:
Originally Posted by Kajtek1
DANG. What went wrong? Didn't MB engineers see what they are doing?
Anyway, the MB diesels will be available in CA, just like Jetta tdi are.
My neighborhood VW has new black Jetta tdi listed for $33k.
MSRP is $17k
MB engineers knew about this since about October 2003. Here are the numbers published by the EPA from the test performed at that time. Vehicle E is the Mercedes diesel conditioned to 50,000 miles. It achieves NOx emissions of 0.05 +/- 0.01 g/mi. The cutoff to qualify for Tier 2 Bin 5 is 0.05 g/mi. So it was very close!



Last edited by Wolfgang; 09-02-2006 at 06:03 PM.
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post #9 of 9 (permalink) Old 09-02-2006, 06:18 PM
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Chief Mercedes diesel engines

And... this gentleman is the chief Mercedes-Benz diesel engine engineer.


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