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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.

2014 Audi R8 V10 Plus

Ignore the naysayers who say the Audi R8 is too refined to be a proper supercar, or that it has begun to show its age - after a few tweaks for the 2014 model year, the automaker's flagship remains one of my favorite exotics.
Audi has treated all of its R8 models to a host of enhancements for the 2014 model year that include new LED headlights and tail lamps, larger steering wheel-mounted shift paddles, new exhaust finishes, updated alloy wheel designs and fresh exterior colors. However, the most significant news is the arrival of a proper seven-speed S-Tronic dual-clutch automatic transmission (it replaces the six-speed R-Tronic). The rapid-fire gearbox shaves a coupe tenths off the 0-60 sprint and improves fuel economy for both the eight- and ten-cylinder models (thankfully, a traditional six-speed manual is still on the order form).
I recently spent time with the new-for-2014 V10 Plus model, which is only available in a coupe body style. Compared to the standard V10 models, the Plus sheds upwards of 130 pounds thanks to lightweight manual seats (not fitted to my test car), carbon-ceramic brakes, reduced sound bay insulation, a smaller fuel tank and an assortment of carbon-fiber pieces (including side blades, front splitter, rear diffuser and spoiler). But that's not all, as the V10 Plus also receives a bump in output that pushes its ten-cylinder to an even 550 horsepower.

Audi reveals new beefed-up A8 L Security

Audi claims is the lightest armored vehicle of its kind.
If there were ever a sedan that deserved the descriptor of "luxury," surely it's the Audi A8. Particularly in long-wheelbase form. But for many of Audi's wealthy customers around the world - namely those in developing markets - there can be no greater luxury than security. And for just those customers, Audi has announced the new A8 L Security.