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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.

Audi prepping a flex-fuel A3 for Latin America

Volkswagen's Audi division hasn't fared well from its parent company's diesel-emissions scandal, especially in the US and Europe. In South America, though, Audi is set to unveil its first vehicle of the flex-fuel variety, according to Nseavoice. Perhaps the German automaker can earn some good karma down in the Southern Hemisphere. The model is the 2016 Audi A3, which is made in Audi's Brazil factory. The engine is a 1.4-liter variety, and it will be able to run on either conventional gasoline or ethanol, or a blend of both. The decision makes sense because ethanol is plentiful in Brazil since the government has long pushed for it and there's plenty of sugar-cane feedstock to produce the stuff. Audi can use all of the positive news it can get, especially in the wake of VW's diesel-emissions scandal. As many as 11 million VW and Audi diesels may have been fitted with software that cheats emissions-testing systems. One result from the scandal's proverbial shrapnel is that the Audi A3 TDI diesel was stripped of its 2010 Green Car of the Year Award by Green Car Journal. The decision marks the first time in the award's history that a winner was stripped of the honor. VW has a long history offering flex-fuel vehicles in Brazil. In 2003, the German automaker was the first to debut a flex-fuel engine, and within two years, VW's Brazil factories were making 300,000 flex-fuel vehicles annually. Other companies have since jumped into Brazil's flex-fuel fray, including Nissan and Honda.

Audi's next R8 snapped running the 'Ring nearly naked

Following the debut of the Lamborghini Huracán, work is now well well under way on its cousin. That, of course, would be the next-generation Audi R8, the followup to the model that put Ingolstadt on the supercar map in 2006 and has been on the market ever since. That's an eight-year lifespan, though to be fair, for 2014 it has gotten a pretty meaningful update. Still, that's a long lifecycle, even if the Gallardo with which it shares its underpinnings was around even longer. In other words, it's about due for replacement.
Fortunately, that's just what Audi has in the cards. We've seen prototypes wearing heavy camouflage lapping the Nürburgring a couple of times over the past few weeks, but now it's been snapped nearly completely undisguised, with largely bare black bodywork giving us an even better look at what to anticipate.
So what are we looking at here? A sharper-looking take on the existing design, for starters, so onlookers and customers alike shouldn't have any trouble identifying this as an R8 - but a newer one at that. It seems to take some cues from the new TT, particularly around the headlights, with more squared-off elements throughout. There's an adaptive rear wing poking out the back and more pronounced side-blade intakes between the doors and the rear wheels, which themselves are wearing ultra low-profile rubber.