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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 Nanuk Quattro Concept is a wild surprise ahead of Frankfurt

Volkswagen Group Night ahead of the Frankfurt Motor Show always has some surprises, the first of which this year is the Audi Nanuk Quattro Concept. The all-wheel-drive, turbo-diesel-powered supercar is similar to the Giugiaro Parcour Concept that was unveiled earlier this summer. In fact, the Parcour's creator, Italdesign Giugiaro, penned the Nanuk, and we suspect much of the former found its way into the latter - with some changes, of course.
The diesel engine, a departure from the Parcour, is a twin-turbocharged 5.0-liter V10 TDI unit that develops 544 horsepower and a hole-digging 738 pound-feet of torque, which make the 4,189-pound all-road vehicle able to dispatch 0-62 miles per hour in 3.8 seconds and go on to a 190-mph top speed. Fuel consumption is a relatively low 30 miles per gallon for a car with this much performance.
The Nanuk showcases Audi's Quattro, though it uses a specially designed version of the all-wheel-drive system to get the job done. Audi's next generation of adaptive air suspension is featured as well, which fits the crossover nature of the Nanuk. Drivers are given a range of 2.76 inches of height adjustment, though Audi doesn't mention the car's minimum or maximum ground clearance.

Audi tech counts down red lights today, reduces traffic tomorrow

Audi announced today that in Washington D.C. and Las Vegas, select Audi Q7 and A4 models will be able to take advantage of new vehicle-to-infrastructure technology. The technology was developed with Traffic Technology Services and will allow drivers to see how long it will take for a traffic light to change to green. Compatible traffic lights will send information through servers operated by Traffic Technology Services to properly equipped Audis. This may not sound like an earth-shattering feature at first, unless you're a stoplight drag racer – if Audi has its way, it may shut off the timer at about 10 seconds to prevent such a thing – but the technology opens up the door to much more useful features down the road. Audi's general manager for connected vehicles, Pom Malhotra, suggested that the information could be used with "vehicle navigation, engine start/stop functionality and can even be used to help improve traffic flow." More specifically, navigation could account for traffic light timing to divert drivers to a more efficient and faster route. It could even suggest acceleration and speed to hit signals when they're green, minimizing stops and starts. Then, for engine start and stop features, the car could selectively shut off at long stops but remain on when approaching a light that's about to turn green. Traffic lights could also start adjusting patterns based on how many cars are approaching a light or are stuck at a light, alleviating slow-moving traffic. Vehicle-to-infrastructure communication could lead to roads that waste less time and less energy. While Audi didn't elaborate on this topic, vehicle-to-infrastructure technology could also be useful for future autonomous car technology. For instance, the car wouldn't necessarily have to "see" the actual traffic light. Instead, it could rely on a separate signal from the smart traffic light to know it has to stop or go. Going a step further, the technology could be used to manage traffic so precisely that traffic signals are no longer needed, as some other groups have investigated. And, of course, the aforementioned benefits in navigation technology would help autonomous vehicles make smarter route decisions as well. The feature is currently only available on Audi Q7, A4 and A4 allroads built after June 1, 2016. It's also only available as part of Audi connect PRIME, a subscription-based service that provides various infotainment and streaming features for your Audi. While D.C.