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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.

Next Audi TT RS comes in 2016, manual transmission doesn't

This line comes from our review of the 2012 Audi TT RS: "Did we mention that the 2012 TT RS is only available with a manual transmission?" When we review the next-generation TT RS, expected to launch next year, we'll have to rewrite that line as: "Did we mention that the TT RS is not available with a manual transmission?" That's the word from Car and Driver, which has heard that the superheated little coupe will only come with the seven-speed dual-clutch gearbox found in the Euro-market RS3 Sportback. The first generation came with a dual-clutch and a manual transmission in Europe, but the unit for our market required the laying on of hands to get from one cog to another. If we don't get another, the blow will be all the more painful because Audi's manual transmissions are so good. Our assessment summed up the last one thus, "With a short, precise throw and excellent action, the transmission is a mechanical work of art." Good news? Volkswagen says the installed DQ500 dual-clutch is faster, more refined, and more reliable. As well, power from the reworked 2.5-liter, turbocharged five-cylinder should rise from 360 horsepower to "around 400." You'll just be asked to keep your hands off of it. The first-gen car only came here after a successful Facebook petition gathered more than 11,000 signatures in a month, we wish Audi had given us a chance to weigh in on this, too. Although we will probably get it later next year as a 2017 model, we could see it at the Frankfurt Motor Show in two months. Related Video:

Translogic 169: Racing against Audi's autonomous RS7

Translogic host Jonathon Buckley heads back to the Ascari Race Resort in Spain for an encounter with a track rival unlike any other. Watch as "Bucko" challenges "Bobby," Audi's autonomous Audi RS7 racecar to see who is quicker around the course. It's a classic tale of "man versus machine" in this episode of Translogic. Follow Translogic on Twitter and Facebook. Click here to subscribe to Translogic in iTunes. Click here to learn more about our host, Jonathon Buckley. Audi Autonomous Vehicles Racing Vehicles Translogic Videos