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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.

2016 Audi S8 Plus burns the 'bahn faster

At no point during my drive of the Audi S8 last year did I think, "You know, this car could really use more power." With 520 horses on tap from a twin-turbo, 4.0-liter V8, the S8 is a damn good luxury/sport sedan. But I'm certainly not going to complain about a big ol' power boost, and that's just what we have here with the new Audi S8 Plus. It's got the same engine underhood, but power is boosted from 520 hp and 481 pound-feet of torque to a healthy 605 hp and 516 lb-ft. There's even an overboost function that increases torque output to 553 lb-ft for short bursts. That means the big S8 will run to 60 miles per hour in just over three and a half seconds. Hot damn. All that thrust doesn't come cheap, though; the S8 Plus costs $115,825. Of course, that's cheaper than the Mercedes-AMG S63 sedan, but the Merc is a decidedly more luxurious car. Still, a 605-hp S8 sounds mighty fine to me. Of course, a 520-hp S8 was already perfectly fine to begin with.

Head of dieselgate clean up set to leave Volkswagen after a year on the job

After just over a year on the job, Volkswagen's compliance chief Christine Hohmann-Dennhardt is set to leave the automaker by the end of the month. In an announcement, Volkswagen confirmed the departure, saying the separation was due to a difference of opinions regarding the role and duties of the compliance chief. Automotive News Europe reports that there were frequent clashes between Hohmann-Dennhardt and senior Volkswagen employees. Hohmann-Dennhardt was brought in on last year to help manage the cleanup in the wake of the diesel emissions scandal. She came over to Volkswagen from Daimler, parent company of Mercedes-Benz. Before that, she served as a judge in Germany's constitutional court. Volkswagen hasn't announced a replacement. Related Video: News Source: Automotive News EuropeImage Credit: Getty Green Hirings/Firings/Layoffs Audi Volkswagen Emissions Diesel Vehicles dieselgate diesel emissions volkswagen diesel