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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 Q1 captured wearing production metal for first time

Audi is getting closer and closer to introducing its smallest crossover ever in the form of the new Q1. Now, we have our very first shots of the mini cute ute wearing its production skin. Expected to make its debut in 2016, it would seem that the Q1 will follow the trend set by the Q3 and draw inspiration from the brand's Q5 mid-sizer. Proportionally, it doesn't look dramatically smaller than the Q3. The front overhang is similarly sized, although there's a smaller rear overhang and a more aggressive rake to the rear window. The front windshield looks more aggressive too, and overall, the Q1 looks to sit lower to the ground than its big brother. While it shares a number of parts with the current Audi A1, when the Q1 debuts, it won't be based on the same platform. Audi's smallest car rides on the Volkswagen Polo's platform, while our spies report that the Q1 will instead be based on the Volkswagen Group's MQB platform. Despite the different platforms, though, expect there to be some sharing of powerplants. That means a variety of gas engines, and likely a version of the A1's 1.6-liter, turbodiesel four-cylinder. There should also be an SQ1 coming shortly after the standard model debuts. You know, for all the folks demanding a high-performance, all-wheel-drive, luxury mini crossover. Check out the full gallery of spy photos at the top of the page.

Audi planning A7 powered by fuel cell?

Back in March, Volkswagen AG CEO Martin Winterkorn voiced his doubts about the cost and infrastructure associated with building hydrogen fuel cell vehicles, but according to Autocar, that isn't stopping Audi from developing a fuel-cell version of the Audi A7. While we're inclined to take this report with a grain of salt, this wouldn't be the first time a VW executive has made seemingly damning statements about electric powertrains that later proved to be incorrect.
After speaking with Audi technical chief Wolfgang Dürheimer, Autocar reports that Audi is building a fuel cell A7 that is expected to be ready for testing by August. Like the electric E-Tron and natural-gas-powered G-Tron models, the hydrogen fuel cell Audis could, if produced, carry their own "tron" nomenclature.