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Audi debuts all-new R18 E-Tron Quattro with novel secondary hybrid system

This is the new Audi R18. It looks like the Bond villain of race cars (it has red running lamps), and if Audi's past is any indication, it'll prove difficult to beat in the LMP1 class of the 2014 World Endurance Championship.
The car's full name is the Audi R18 E-Tron Quattro, just like last year's car. Also like last year's car, the new R18 draws its power from a V6 turbodiesel, which powers its rear wheels, and Audi's E-Tron hybrid system, which runs its front axle. Unlike last year's car, though, this R18 has a secondary hybrid system. Audi has fitted the V6 with an electric turbocharger and figured out how to capture waste heat generated when the engine reaches its boost limit. That power can then be stored and fed back into either the turbo or the front axle's hybrid system under acceleration.
There are a number of changes to the body on the new car, forced in large part by series regulation changes. The car is narrower, particularly at the front, but it's also taller. The front end is set off by a new wing, as part of a new WEC regulation. Audi seems quite pleased about this, citing an improvement in front-end downforce and a reduction in cost. Like Formula One, the WEC contenders now have to contend with a ban on the so-called blown diffuser, which forced exhaust gases over the diffuser, creating downforce. That's necessitated some changes from Audi, although as we have no rear shots of the car, we can't tell you what it looks like.

Will Audi surprise us with an all-electric SUV?

Audi may be looking to get seriously competitive in the electric vehicle market, according to a report from Reuters. The company has plans prepared for a range of EVs that would compete with the likes of BMW and Tesla. In a market where innovation is seen as valuable, getting on board with electrification could help Audi avoid appearing out of step with the rest of the crowd (and the market), with analysts predicting a sharp uptick in battery-powered cars in the next several years. Building on the E-Tron line, which already includes the A3 E-Tron, Audi will begin offering an electric version of its R8 supercar in Europe next year. According to two confidential sources at Audi, the company also has plans for high-performance electric sedans and SUVs. It appears as though Audi is taking direct aim at Tesla with alternatives to the current Model S and the upcoming Model X SUV. Advantage: Audi? Without getting into too many specifics about such plans, the sources did confirm the existence of blueprints for an Audi Q8 E-Tron. Audi has said that any future electric cars would have a target range of 400 kilometers (about 249 miles), but previous reports suggest that the Q8 E-Tron could have a range of about 370 miles. That could be a serious challenge for Tesla. Advantage: Audi? All the German automakers have electric tricks up their sleeves. BMW has its i line, with the i3 making headway and the i8 expected to sell well. Mercedes-Benz has gotten into the game the B-Class Electric Drive. Also, its parent company Daimler has a stake in Tesla. Now, Audi appears poised to launch its own diverse electric fleet, and the next move might just be an SUV. And while this added competition might seem like tough news for Tesla, the proliferation of EVs, and the growing infrastructure that goes along with it, is more likely a tide that raises all (electric) ships - something that Elon Musk seems to understand very well.

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.