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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.

Autoblog's top 50 car photos of 2016

This one shouldn't need much explanation. We like cars a whole lot, and that includes not just driving them but taking great pictures of them. We've collected our 50 favorite images from this year in the mega-gallery above. It's a mix of old and new, with a healthy dose of vintage and modern race cars mixed in, and not one single shot under the harsh lights of an auto show. So click through and enjoy. Featured Gallery Autoblog's Top 50 Photos of 2016 View 50 Photos Image Credit: Copyright 2016 Autoblog.com Audi BMW Chevrolet Dodge Ferrari Ford Lamborghini Mazda McLaren Mercedes-Benz Porsche Rolls-Royce Volvo Convertible Coupe Motorcycle Luxury Racing Vehicles Performance Supercars Classics

Audi planning RS Q7 performance crossover

Audi resisted getting into the crossover market altogether until it launched the original Q7 in 2005, and held back from producing a performance crossover until it caved first with the SQ5 and then with the RS Q3, both in 2013. And now that the tide has washed over it, Ingolstadt's next plan, according to Top Gear, is to launch a performance version of the new Q7. Though it remains unclear whether it would carry the S or RS badge, the performance-oriented version of the new Q7 will surely benefit from the hundreds of pounds in excess weight Audi managed to trim off the latest model over the one it replaces. Also unclear is whether said hi-po Q7 would go with a diesel or a gasoline engine. The diesel option would more likely go the S route than the full RS, but wouldn't be likely to make it to the States if it were only offered as a diesel. With the SQ5, it's worth noting, Audi offers a TDI diesel version in Europe and a gasoline TSI in North America, so we wouldn't be surprised to see it take a similar approach with the larger model as well. Whatever it does pack under the hood, though, the SQ7 or RS Q7 would be facing some stiff competition from the likes of the Mercedes GL63 AMG, BMW X5 M and Range Rover Sport SVR – not to mention corporate cousins like the Porsche Cayenne Turbo and upcoming Bentley Bentayga – while giving the Volkswagen group a bigger slice of that exclusive but expanding pie.