2011 Audi A3 2.0t Premium on 2040-cars

Auto blog

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.

Weekly Recap: The divergent paths of Tesla and Fisker

There's no doubt that Tesla is downshifting while Fisker has been grinding its gears. But it wasn't always that way.
In the wake of Tesla's recent success, it's easy to forget that there were once two California electric carmakers with bright futures.

Audi races ahead with new R8 LMS [w/video]

The biggest news from Audi at the Geneva Motor Show may very well be the reveal of the all-new, second-generation R8 supercar. But the road-going version isn't the only one it's rolling out at the Swiss expo, where it's joined by the new competition-spec R8 LMS. Set to hit race tracks around the world next season, the new Audi R8 LMS picks up where the current one leaves off, having taken 26 GT3 Championship victories and seven 24-hour race wins between 2009 and 2014. That's a heck of a mantle to assume, but the new model looks like it'll be up to the task. Based on the new road-going R8, the new LMS is built to 2016 GT3 regulations and in many ways even exceeds them. In fact, Audi says it meets the more stringent crash requirements for the LMP1 class, and includes its state-of-the-art Audi Protection Seat PS 1 from the R18 E-Tron Quattro. It also incorporates the emergency hatch Audi built in to its DTM racers. Of course, there's more to the new R8 LMS than safety. Despite the addition of those features, the whole package is a good 55 pounds lighter than the outgoing model, thanks to the lightweight spaceframe chassis and the increased use of carbon-fiber components – all the while offering more torsional rigidity. Power still comes from Audi's celebrated 5.2-liter V10 engine producing 585 horsepower, but is now mated to a new six-speed sequential gearbox and benefits from an entirely new electrical system, improved airflow and optimized aerodynamics. All that and more ought to help the new R8 LMS and its customer racing teams achieve the success they're after once it makes its competitive debut at the Nurburgring 24-hour race in mid-May 2016. Related Video: AUDI R8 LMS ESTABLISHES NEW RACE CAR GENERATION: LIGHTER AND SAFER THAN EVER BEFORE Ingolstadt, March 3, 2015 – Audi is again running in front. As one of the first automobile manufacturers to do so at the beginning of the 2015 season, the brand with the four rings is presenting a race car that already meets the requirements of the new GT3 regulations to be introduced in 2016. The new Audi R8 LMS is lighter and safer than ever before. It features even more race car technology, clearly improved aerodynamics and, as a result, provides customers with an efficient concept. Back in spring of 2014, Audi began testing the new R8 LMS that is following in big footsteps.