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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 R18 suffers huge crash during Le Mans practice, driver conscious and alert

Loic Duval, driver of the #1 Audi R18 E-tron Quattro, suffered a massive crash today during free practice for the 24 Hours of Le Mans. Duval's car reportedly went off track backwards at high speed near the Porsche Curves and flew into the retaining fence. There is no video of the actual crash at the moment, but a video of the aftermath (viewable below) shows significant damage to the Audi and to the fence. The wall nearby the car appears unaffected.
Thankfully, it occurred quite close to a marshal's stand, and they were present almost immediately after the incident. Both the official press release from the 24 Hours of Le Mans and a tweet from Audi Sport (below) indicated that Duval was conscious after the crash, and he was taken by ambulance to the medical center and then to the hospital. The press release says: "His condition is encouraging." However, any injuries he might have sustained are unknown at this time. After the crash, the course was red flagged, and practice resumed about 50 minutes later.
Duval is alert. He will be transported from the Medical Center to the hospital for further examinations #R18 #LM24 @FIAWEC @24hoursoflemans

Audi A3-based people mover in the works

We have yet another announcement of yet another new Audi, including yet another obligatory quote from Audi research and development chief Wolfgang Dürheimer that there's room for it in the Audi range. On the sidelines of reports about the diesel-hybrid sports car, derived from the R18 endurance racer, there have been remarks about a possible MPV. Now Auto Express reports that said MPV "is on the way" and will be based on the A3 Sportback.
Previous speculation has posited either a six- or seven-seat people carrier; if the AE report is to be believed then five seats is the number that's been settled on. Planned to rest on a stretched version of the A3 platform, its wheelbase would be nearly eight inches longer than that of the A3 Sportback and it would compete against the Mercedes-Benz B-Class and the production version of the BMW Concept Active Tourer.
Audi is not going to dally about it, either, with a concept said to be ready for debut next year. Should it come, it would mean the A3 range comes pretty close to hitting for the cycle.