German Car Forum

Audi Plans TDI Initiative in the USA
Cleanest diesel engine in the world to go into production in 2008

• TDI engines achieve a major reduction in fuel consumption
• New drive technologies for even greater efficiency

Audi is launching its TDI initiative on the North American market. As early as next year, Audi will be putting the cleanest diesel engine in the world into production in the USA virtually in parallel to its launch in Europe: the 3.0 TDI with ultra-low emission system will initially be available for the Audi Q7, and later for the new Audi A4 too. Audi has been expanding steadily in the USA for many years now, and sees the market as holding high potential for its cutting-edge TDI engines. The low-sulphur fuel required for the engines’ operation was introduced throughout the country a year ago, paving the way for the initiative to begin.

The TDI engine is the most successful efficiency technology in existence; Audi first introduced it into series production 18 years ago and has been progressively extending its lead over rival technologies ever since. “The TDI units burn up to 35 percent less fuel than the average of petrol engines typically used in the USA. This means that the TDI can assume an important role in the rapid reduction of CO2 emissions,” comments Ralph Weyler, Board Member for Marketing and Sales at AUDI AG. At the “German TecDay”, an information event organised jointly by Volkswagen, Bosch and the Association of the German Automotive Industry in San Francisco, California, Weyler emphasised: “No other drive system can beat the TDI’s combination of high power and low fuel consumption.”

According to calculations by the Environmental Protection Agency (EPA), the United States could save 1.4 million barrels of crude oil every day if just one third of all passenger cars and light-duty commercial vehicles were equipped with up-to-date diesel engines.

Leading market research firms such as J. D. Power predict that diesel engines will have a 12 to 15 percent share of the US market in 2015, which represents a substantial jump compared to the current share of sales of around four percent.

The new Audi 3.0 TDI with ultra-low emission system develops an output of 176 kW (240 bhp) and 550 Nm of torque, making it both powerful and efficient. New technologies optimise the combustion process in the V6: the common-rail injection system builds up 2000 bar of pressure, while sensors monitor the combustion chambers. One crucial innovation is the ultra-low emission system in the exhaust tract, which largely eliminates nitrogen oxides by means of a carbonic acid diamide solution. With this system on board, the 3.0 TDI fulfils the toughest emission standard in the world – the LEV II Bin 5 classification, which is operative in the US states of California, New York, Massachusetts, Maine and Vermont. The high-tech diesel from Audi also already complies with the emissions limits that are due to come into force in Europe from 2014.

Audi is tackling the issue of efficiency with all its resources – with new technologies, new engines and new drive concepts. A host of other forward-looking solutions are available besides the cleanest diesel engine in the world. These include the groundbreaking, ultra-efficient FSI engines with petrol direct injection, as well as technology modules for Intelligent Energy Management (IEM), such as a start/stop system and a micro-hybrid. In view of the fact that the fuels themselves have a key role to play in the reduction of CO2 emissions, Audi is also focusing its attention on the second generation of biofuels which use the entire plant rather than just its fruits.

Whatever new development it is working on, the brand with the four rings stays true to one clearly defined precept: Audi seeks to heighten the efficiency of all its new models, whilst at the same time further enhancing their sporty profile and the driving pleasure they offer.

[Source: Audi AG via Fourtitude.com]

Is it based on Benz's Bluetec technology, without the name? Or is it Audi engineering? And in that case, is it the same system than Bluetec or something really different?

BTW, this is good news. Now they need a big marketing and advertising campaign to market it as as good for the environnment and more economical than Lexus' hybrids...

It's similar but I believe VAG uses a different reductant.

BTW, Bluetec is just a name to represent Benz's implementation of the technology... but it's not a Benz technology per se, it's a joint effort by many manufacturers. When originally VAG signed on to sell Diesels under the BlueTec name, it was still going to release the same engines as above (which are slightly different from MBs) and call it BlueTec anyways.

Carbonic acid diamide = urea!



It's the same SCR - Selective Catalytic Reduction technology (using urea as reductant) MB is using in latest BlueTec cars. And BMW is coming with the same tech.

All three Germans (MB, BMW, VAG: VW + Audi) will offer same tech, therefore also they were in talks to offer diesel cars with SCR tech under BlueTec trademark in US market. BMW didn't sign the agreement in the end, and decided to market they cars as "CleanDiesel" (marking cars simply with letter "d"). VW / Audi & MB signed the agreement on BlueTec name, but later VW/ Audi changed their minds & decided they will market their diesel cars as TDI(e).

Ah, you're right... VAG also uses AdBlue like MB.

Yep but it is Mercedes who developped this technology, from what I know. Not a consortium. Mercedes use it since some time in the Actros and other trucks. They've just got the agreement to sell the E320 Bluetec in California, where it will be the first diesel sinc decades. Benz just offered the others the tech, and the name.

Like one has in its signature, "The star rules, others just follow"
(on petrol engines, one can't say they are so advanced though...)

What about DiesOtto engine?

Nah, AdBlue, which is the urea-based solution (and the reason MB call it's implementation BlueTec) is a trademark of the German Association of the Automobile Industry.

Again, Bluetec is MB's implementation (with the help of Bosch) of a Diesel engine using AdBlue.

MB did not invent AdBlue, which was designed for the purpose of reducing Diesel emmisions.

So you can't really say that MB invented the technology. Because VAG, BMW and others implemented the technology without MB. Mind you some implementations vary slightly, but all use the same principle.

Ah ok, did not knew it. Mercedes has Bluetec since much much longer than the others though, so they still are the leaders of that tech. And they made some strong marketing with it, to establish it as the better solution than hybrids.
The DiesOtto, yeah, that is a good point. In 5 years it could be released, and it sounds very promising.

But at the moment it is BMW the leader for petrol engines, with Efficient Dynamics. Mercedes leads for the diesel with Bluetec and will soon present Bluetech-hybrid, what really should be interesting, and the promising DiesOtto-hybrid.. Lexus has petrol-hybrids, and the next Prius could be diesel-hybrid, I think I read that somewhere...

This a fascinating technology-battle!

DiesOtto... now that's a MB technology 100%.