2009 Audi R8 Coupe 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.

TRANSLOGIC 147: CES 2014 Autonomous Vehicles

We head back to CES in Las Vegas to check on the progress of autonomous vehicles in 2014. We go hands-free on the highway with Audi, narrowly avoid a collision with Ford and hear all about BMW's drifting driverless car. But first we take a ride on Induct's self-driving Navia shuttle.

Audi R8 Spyder is latest big New York Auto Show debut

The New York Auto Show hasn't been boring. Highlights so far are the kick ass Mazda MX-5 Miata RF and the new Lincoln Navigator Concept. And now, Audi has added a healthy dose of supercar to the mix with the new R8 Spyder. The headlining stats are familiar, seeing as how they're plucked directly from the new R8 hardtop. The only powertrain option is the 5.2-liter V10 and seven-speed S-Tronic dual-clutch transmission. That engine, as in the hardtop, is good for 540 horsepower and will get this droptop German to 62 miles per hour in just 3.6 seconds (only a tenth of a second off the Coupe's time). The convertible R8 will run all the way up to 197 miles per hour. Audi's release makes no mention of a higher-performance V10 Plus model, which is available on the R8 Coupe. That top-end trim bumps output to 610 ponies and cuts three-tenths of a second off the base hardtop's 3.5-second run to 60. The upside, of course, is unlimited headroom. The new fabric roof can be opened or closed at speeds up to 31 miles per hour, and the operating time is 20 seconds in both directions. The R8 Spyder hasn't exactly been a secret. We've spotted it testing as recently as August, and it was included on a leaked product road map last month with a listed March/April debut. Check back later for a full round of live images from the R8's New York debut. Until then, check out our first images of the new R8 Spyder, available up top. Related Video: New Audi R8 Spyder V10: debut at the New York International Auto Show V10 engine developing 397 kW (540 hp), from 0 to 100 km/h (62.1 mph) in 3.6 seconds New: driving dynamics system with performance mode Audi Space Frame with 50 percent improvement in rigidity 397 kW (540 hp), from 0 to 100 km/h (62.1 mph) in 3.6 seconds, top speed 318 km/h (197.6 mph) – the new Audi R8 Spyder* with V10 naturally aspirated engine merges impressive performance with the allure of open-top driving. Its striking design and high-end technologies demonstrate the concentrated expertise of the premium brand. Audi is unveiling its new open high-performance sports car at the New York International Auto Show 2016. "With its spontaneous throttle response, quick revving-up and inimitable sound, the 5.2 FSI naturally aspirated engine in the new Audi R8 Spyder delivers undiluted emotion," remarked Dr.-Ing. Stefan Knirsch, Member of the Board of Management for Technical Development.