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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.

German prosecutors have recorded calls between VW bigwigs talking dieselgate

It's barely possible to believe how poorly Volkswagen continues to handle dieselgate. Depending on which day you catch the news, the German carmaker embodies the corporate venality of "Michael Clayton," the comic blundering of the Coen Brothers' "Burn After Reading," and the every-man-for-himself vengeance of "Reservoir Dogs." Today is Tarantino day, with news that German prosecutors have recordings of phone calls between former Audi and Porsche development boss Wolfgang Hatz, ex-Volkswagen Group executive Matthias Muller, and current Porsche executives Oliver Blume and Michael Steiner. Hatz made the calls to the trio in November 2015, two months after Volkswagen admitted its diesel-particulate sins to the U.S. Environmental Protection Agency. Hatz was still employed at the time, and in his company car. Who recorded the calls? His wife. Hatz and his missus apparently saw the storm coming and started stacking defenses early. Hatz's wife, who can be heard encouraging Hatz during at least one call, sent the recordings to Hatz's attorney from her mobile phone. According to a Google translation of the German newspaper Handelsblatt's report, she included the note, "Here is a very long, but quite informative conversation on the current situation with useful formulations." The report in Handelsblatt said that in Germany it is generally "not allowed" to record a conversation and pass it on to a third party. We don't know how the authorities will handle this matter, since prosecutors found the recordings in e-mail attachments on Mrs. Hatz's mobile phone. Remember, when the diesel scandal broke, VW spent months saying that only a small number of low-level personnel were behind it, and all of the higher-ups had been blindsided. Ex-CEO Martin Winterkorn claimed to be "stunned that misconduct on such a scale was possible in the Volkswagen Group." Winterkorn successor Matthias Muller said, "according to current information, a few developers interfered in the engine management." Former VW USA honcho Michael Horn told a congressional committee that "a couple of software engineers" programmed the software for reasons no one could understand. In the recorded conversations, Hatz apparently called Muller to find out how VW planned to treat him.

Mercedes could make EV batteries with Audi, BMW

It's not a big leap from digital maps to batteries, it turns out.The head of Mercedes-Benz parent Daimler said recently that he envisions his company working together with German automotive competitors BMW and Volkswagen to further accelerate electric-vehicle battery technology. The three automakers recently worked together to enhance their in-car maps systems. Daimler CEO Dieter Zetsche talked about "commonalities" between automakers, not the least of which is the need for all of them to achieve increasingly stringent fuel-economy requirements in the European Union, at the Frankfurt Auto Show last week, according to Reuters. While these companies have made their own inroads as far as plug-in vehicles go, they are all behind the Renault-Nissan Alliance when it comes to public deployment of electric vehicles. This summer, Daimler, Audi and BMW hooked up to acquire the Nokia Here digital-mapping service for about $2.8 billion. The triad of automakers beat out companies such as Apple and Uber to buy the entity, which was founded in 1986 as Navteq. Nokia bought the company in 2007. The acquisition makes sense as the automakers work on improving their products with features like cloud-based data to warn drivers of icy roads and traffic jams. The technology will likely also eventually be used in autonomous vehicles. Automakers working together for a common goal of improved technology is nothing new, of course. General Motors and Honda agreed in 2013 to work together to accelerate hydrogen fuel-cell drivetrain development. Earlier that same year, Daimler said it would work with Ford and Nissan in a separate collaboration to speed up the development of hydrogen fuel-cell technology. Related Video: