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Audi celebrates diesel milestone with triple-charged RS5 TDI concept

Diesels are typically slower than their gasoline counterparts, but leave it to Audi to turn that notion on its head. After dominating Le Mans and the international endurance racing scene under diesel power for the better part of a decade, the German automaker toyed with the idea of an oil-burning R8 for the road and ultimately made its first performance crossover a diesel. It's made the letters TDI a battle cry, and now it's yelling even louder with the RS5 TDI concept.
Set to be unveiled in a couple of days at the Leipzig Auto Show to celebrate 25 years of the TDI engine, the concept ditches the gasoline-burning 4.2-liter V8 in the production RS5 in favor of a 3.0-liter V6 twin-turbo-diesel with an electric supercharger added on to combat turbo lag. Output comes in at 385 horsepower and 553 pound-feet of torque, which means that while it has 65 fewer horses than the gasoline model, it packs a staggering 236 lb-ft more torque.
The result of the triple-charged madness is a 0-62 time around four seconds flat, trumping the 4.6 seconds for the road-going model. Top speed, of course, is electronically limited to 155 miles per hour, which is a bit of a shame because we bet it'd be a kick to pass a Porsche on the Autobahn in a diesel, now wouldn't it?

Audi says new 48 volt micro-hybrid system improves fuel economy, paves way for electrification

Most cars use a 12-volt system to power their electrical components. But, with more and more electric bits and bobs being added to new vehicles, a dozen volts is looking a bit weak these days. In fact, Audi says that standard 12-volt systems are being stretched "to their very limits." Enter 48 volts. If used in a car that gets 40 mpg, that would translate to around 43.5 mpg. Audi is testing a supplemental 48-volt electric system in two prototype vehicles – modified mild-hybrid versions of the A6 TDI and the RS 5 TDI – in order to add in more electric technology (an electric compressor, for example, to improve acceleration) and "convenience systems for dynamic chassis control." Audi says it has more applications in the pipeline, but the overall gist is that the German automaker sees 48 volts as an "important building block in electrification strategy." As you can see in the picture above (click to enlarge), the RS 5 TDI concept uses a li-ion battery installed in the back of the car and an alternator to provide 48 volts when the engine is off. Audi says that the 48-volt system can save up to 0.4 liters of fuel per 100 kilometers. To put that into US numbers, if used in a car that gets 40 miles per gallon today, that would translate into a bump up to around 43.5 mpg. The Advanced Lead Acid Battery Consortium (ALABC) is also working on a 48-volt system to improve fuel economy and we've got a deep dive of Audi's electric turbocharger here. Even more powerful and efficient – the new 48-volt technology from Audi Important building block in electrification strategy More voltage and more power for new technologies Scalable platform concept suitable for wide-ranging uses Ingolstadt, August 25, 2014 – Audi is to upgrade part of its vehicle electrical system from twelve to 48 volts. The move represents another technical building block for facilitating the integration of new automotive technologies while increasing the power and efficiency of its cars. "We are using the full bandwidth of electrification in our drive principles strategy. Running part of the vehicle electrical system at 48 volts plays a central role in this," commented Prof. Dr. Ulrich Hackenberg, Member of the Board of Management for Technical Development at Audi. "It enables us to make more energy available.

Recharge Wrap-up: Audi 'Plugging In' video, Citroen e-Mehari rumors

Audi is sponsoring the Newport Folk Festival with its "Plugging In" campaign. In celebration of the event, a video shows the history of the festival, and how plugging in the electric guitar changed music, similar to the way plugging in an electric vehicle changes the way we think about transportation. The video is focuses entirely on music, but at the end, we get the (ahem) plug from Audi: "Audi A3 Sportback e-tron — Plugging In Across America." Watch it above. The first image from Tesla's Firmware 7.0 update has made its way online. The photo shows what appears to be Tesla's new Autopilot feature. The view of the display also suggests that beta testing is happening on main roads between San Francisco and Tesla's home in the tech hub of Silicon Valley. See the photo and read more at Teslarati. The IRS has published a notice regarding its tax code overseeing the treatment of biodiesel credits. It says that, among other things, claimants must reduce their income tax deduction by the amount of the credits given for alternative fuel used or sold during a given quarter in 2014. Biodiesel producers and blenders were eligible for a tax credit of $1.00 per gallon. Read the notice from the IRS, or learn more from Biofuels Digest. Rumors suggest that Citroen will unveil a concept EV based on the C4 Cactus and classic Mehari at the Frankfurt Motor Show. L'Automobile Magazine is reporting that the French automaker has registered the name "e-Mehari," leading to speculation — and even a goofy rendering — from L'Automobile. There has been no official acknowledgement of the e-Mehari from Citroen, so let's not get too excited yet (especially you, Mr. Ewing). Read more from Technologic Vehicles, or in the (Google-translated) post from L'Automobile Magazine. Related Gallery 2015 Citroen C4 Cactus View 32 Photos News Source: YouTube: Newport Folk Festival, Teslarati, Biofuels Digest, IRS, Technologic Vehicles, L'Automobile Magazine Government/Legal Green Marketing/Advertising Rumormill Audi Tesla Citroen Alternative Fuels Biodiesel Concept Cars Electric Videos recharge wrapup