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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 starts production of new TT in Hungary

Audi sure made waves when it rolled out the original TT in the late 1990s, putting fashion forward with a stylish coupe that neatly summed up the design direction the company was headed in. But that was a decade and a half ago, and the TT has moved on considerably since then.
The German automaker has since revealed its third-generation TT, replacing the original twice over with ever-more performance-focused but no less stylish successors along the way. But it wasn't until last week that the first new MkIII TT rolled off the assembly line.
That took place, of course, in Gyor at Audi Hungaria Motor Kft. It's the same assembly plant that handles the company's A3 sedan and cabrio, with the facility also handling final assembly of the TT ever since the factory opened in 1997 and the model began rolling off the line in '98. Last November, the plant in Hungary built its 500,000th TT, and now officials are ushering in the era of the new model.

Audi readies sales of new fuel-efficient A4, A5 and A6 models

As diesels continue to account for a minority of cars sold by Audi in the US, the German automaker and Volkswagen unit continues to expand its diesel models in Europe for the sake of fuel efficiency. Early this year, Audi will debut its new A4, A5 and A6 variants in Europe as part of what it calls its "ultra" strategy of pairing performance with fuel economy. Audi will have 11 new models for 2014, and the updated A4, A5 and A6 will use Audi's 2.0-liter turbodiesel powertrain. Versions of that engine will range from 136 to 190 horsepower, while torque will range from 236 to 295 pound-feet. More importantly, the models will get anywhere from 51 to 60 miles per gallon, when tested on the more lenient European driving cycle. And while manual transmission will be standard (this is Europe, after all), the A6 will have a seven-speed automatic transmission option. Pricing will start at 32,600 euros ($44,000 US) for the base A4 and work its way up to 45,000 euros (about $61,000) for the top of the line A6. Last year, Audi boosted its diesel sales in the US by 40 percent to just over 10,000 units, though that accounted for just a fraction of the approximately 158,000 cars the company sold domestically in 2013. Audi has a press release on the new models below. The new ultra models from Audi A4, A5 and A6 with impressive efficiency • New ultra models from Audi with 136 hp, 163 hp and 190 hp • Greater efficiency with unchanged driving dynamics • Emissions of just 104 to 119 grams of CO2 per kilometer (167.37 to 191.51 g/mile) Audi A6 2.0 TDI ultra, Audi A5 2.0 TDI ultra, Audi A3 1.6 TDI ultra Audi is expanding its ultra strategy with 11 new models: Especially efficient engine versions in the A4, A5 and A6 model lines will be launched in early 2014. A new and powerful two-liter TDI will provide the drive at 100 kW (136 hp), 120 kW (163 hp) or 140 kW (190 hp); the engine emits just 104 to 119 grams of CO2 per kilometer (167.37 to 191.51 g/mile) depending on the model. The "ultra" designation stands for sustainable mobility that is fully available for everyday use. With a combined fuel consumption rate of 3.9 to 4.6 liters per 100 kilometers (60.31 to 51.13 US mpg) and CO2 emissions of 104 to 119 grams per kilometer (167.37 to 191.51 g/mile), the new ultra models from Audi are among the most efficient cars of their segment – without any limitation on the driving dynamics or customary comfort. Audi Board Member for Development, Prof. Dr.