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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.

Everybody's doing flying cars, so why aren't we soaring over traffic already?

"Where's my flying car?" has been the meme for impending technology that never materializes since before there were memes. And the trough of disillusionment for vehicles that can take to sky continues to nosedive, despite a nonstop fascination with flying cars and a recent rash of announcements about the technology, particularly from traditional automakers. Earlier this month, Toyota applied for an eye-popping patent for a flying car that has wheels with spring-loaded pop-out helicopter rotors. The patent filing says the wheels/rotors would be electrically powered, while in on-land mode the vehicle would have differential steering like tracked vehicles such as tanks and bulldozers. At an airshow in July, Aston Martin unveiled its Volante Vision Concept, an autonomous hybrid-electric vertical takeoff and landing (VTOL) vehicle it developed with Rolls-Royce. Aston says the Volante can fly at top speeds of around 200 mph and bills it as a luxury car for the skies. Audi used the Geneva Motor Show in March to unveil a flying car concept called the Pop.Up Next it developed with Airbus and Italdesign. If the Pop.Up Next, an electric and autonomous quadcopter/city car combo, gets stuck in traffic, an app can be used to summon an Airbus-developed drone to pick up the passenger compartment pod, leaving the chassis behind. Audi said that the Pop.Up Next is a "flexible on-demand concept that could open up mobility in the third dimension to people in cities." But Audi also acknowledged that at this point it has no plans to develop it. The cash-stoked, skies-the-limit Silicon Valley tech crowd is also bullish on flying cars. The startup Kitty Hawk that's backed by Google co-founder Larry Page announced in June that it's taking pre-orders for its single-seat electric Flyer that's powered by 10 propellers and is capable of vertical takeoffs and landings. The current version can only fly up to 20 mph and 10 feet in the air and has a flight time of just 12 to 20 minutes on a full charge. The Flyer is considered a recreational vehicle, so doesn't require a pilot's license. Uber says it plans to launch its more ambitious Elevate program and UberAIR service in 2023. "Uber customers will be able to push a button and get a flight on-demand with uberAIR in Dallas, Los Angeles and a third international market," Uber Elevate promises on its website.

2016 Audi A3 Sportback E-Tron First Drive

While its parent company is still in the throes of an emissions scandal that has thrust the "green" credentials of automakers worldwide under the microscope, Audi is launching its first plug-in hybrid in the US. Audi is ready to double down on its electrified future, putting up its own reputation as collateral. This A3 Sportback E-Tron – a vehicle we've sampled in prototype form – is a tech-savvy plug-in car that could be the perfect vehicle to mark the brand's new commitment to an electric lifestyle. Straightaway, Audi USA President Scott Keogh addressed the TDI situation. He says he and the rest of the company are "shocked, followed by appalled, followed by anger, and now in the phase of drop-dead determination to make this thing right." Out of the 500,000 affected 2.0-liter TDI engines around the world, 14,000 are in Audis: about 3,000 A3 TDI sedans and about 11,000 A3 TDI Sportbacks. "It's quite simple. CARB and the EPA have told us these cars can stay on the road, they will stay on the road until we have a fix, and when we have a fix, we will absolutely fix these cars." The most important thing going forward, Keogh says, is regaining the trust of both the dealers and customers. Audi has been enjoying a bit of momentum in recent years, building a reputation for itself along the way. Audi came on the scene in the US in 1969, but it took until 2010 for the company to sell 100,000 units in a single year. Now, "In 2015, we're starting to look down the barrel of nearly doubling our sales in five years," says Keogh. The A3 achieves a 40-percent segment share, and for 75 percent of those buyers, it is their first purchase of a luxury brand. But as its own pace increases, the momentum of the industry as a whole has pulled Audi toward this foray into electromobility. Enter the A3 Sportback E-Tron. There's a little extra weight from the battery pack, but the suspension does a good job of keeping it unnoticeable while driving. The A3 E-Tron has several strengths working in its favor. First of all, as Keogh puts it, the hatchback is a "real, proper Audi – a real, proper, fully rounded driving machine." Qualifications such as "this is an electric car" don't matter. "People just want to buy a car," he says. It has the technology, build quality, and drivability of an Audi.