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Audi says new 48 volt micro-hybrid system improves fuel economy, paves way for electrification
Mon, Aug 25 2014Most 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 to lap Hockenheim in driverless RS7
Fri, 10 Oct 2014An automaker like Audi will always have a number of different research and development projects going at the same time, and some of them might take on very different approaches. At one end, you'll have its racing programs, and at what you'd assume would be the other, self-driving prototypes. But Ingolstadt is preparing to bridge that gap by running an autonomous prototype at racing speed around the famed Hockenheimring.
Set to take place on Sunday, October 19, during the DTM season finale at Hockenheim, the driverless RS7 will motor at speeds up to 150 miles per hour, right up "to its physical limits with millimeter precision."
Audi anticipates that "the world's sportiest piloted driving car" will run a lap time of just over two minutes, at which the RS7 would stand not only to be the fastest driverless car ever to lap the circuit, but also potentially the fastest four-door - if it can beat the 2:02.71 lap time set by a BMW M3 sedan in 2007.
2014 Audi R8 GT zooming toward Le Mans reveal
Mon, 17 Jun 2013According to a report from Autocar in the UK, the Audi R8 is set to get something of a swan song for its own going-away party in the form of an updated GT model for the 2014 model year. If Autocar is right, this even higher-performance Audi R8 will debut at the upcoming 24 Hours of Le Mans race in France.
The 2014 Audi R8 GT Plus will reportedly get a tuned version of the much-loved 5.2-liter V10 engine that Audi has used to good effect in past R8 models. A six-speed manual or seven-speed dual-clutch automatic would send power to the rear wheels, enabling a 3.4-second 0-62 mile per hour run and a top speed of 199 mph.
Judging from spy shots that we've already seen (reprised above), the new GT Plus will be fitted with an aggressive body kit that includes a massive rear wing, a more prominent front splitter and enlarged side blade ducts. A Spyder version of the GT Plus may be on tap for 2015. Pricing, obviously, is unknown, as is any potential launch date. In other words... stay tuned.