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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.

VW CEO talks up 20 new plug-in models in Frankfurt

For years now, Volkswagen has dreamed big, forming plans to become the world's largest automaker. That trajectory includes a big plug-in vehicle push, and the CEO of Volkswagen, Martin Winterkorn, said that his group of companies will bring out 20 more EVs and plug-in hybrids by 2020. The list includes the next Phaeton and the Audi A8. "No commitment to electro-mobility can be any clearer than that," Winterkorn said, according to a VW press release. "Our Group already has the largest connected vehicle fleet on the road. By 2020 we will have transformed all of our new cars into smartphones on wheels." Perhaps most illustrative, Winterkorn admitted that the auto industry has turned a corner. "Technological leadership is no longer solely defined in terms of horsepower and torque," he said. "We are taking the precision, enduring value and quality of our cars into the new, digital world." The VW group is also showing off new plug-in concepts in Frankfurt this week, like the Tiguan GTE and the Porsche Mission E. Winterkorn's prepared remarks do not give out the details of these vehicles, but we'll have all the info from the show floor in short order. Stay tuned. PROF. DR. MARTIN WINTERKORN: "THE REINVENTION OF VOLKSWAGEN" 14/09/15 from Volkswagen Group 20 more electric cars and plug-in hybrids by 2020 announced Group not only has broadest electric fleet, but also largest connected vehicle fleet on the road Customers should benefit from automated driving technologies as quickly as possible Volkswagen taking precision, enduring value and quality of its cars into the digital world Wolfsburg/Frankfurt am Main, September 14, 2015 – In the Volkswagen Group, there is a sense that a new era is dawning. On the eve of the 66th International Motor Show (IAA) in Frankfurt am Main the CEO of Volkswagen Aktiengesellschaft, Prof. Dr. Martin Winterkorn, said on Monday evening: "We are in the process of reinventing Europe's largest automaker, laying the technological, economic and structural foundations." The Group Chairman announced there would be 20 more electric cars and plug-in hybrids by 2020 – from compact cars to the next Phaeton and Audi A8: "No commitment to electro-mobility can be any clearer than that." He said the Group already had the broadest electric fleet in the automobile world, and added that Volkswagen was also at the forefront when it came to the future-oriented field of digitisation: "Our Group already has the largest connected vehicle fleet on the road.

VW recalls 220,000 Atlases, Atlas Cross Sports for airbag defect [Updated]

[Update: Audi of America has confirmed that no U.S. models are among the recall population for plug-in hybrid fire issue.] Volkswagen has issued yet another recall for its Atlas SUV, this time for side airbags that may not deploy correctly in an accident due to a problematic connection in one of the vehicle's wiring harnesses. The campaign covers 222,892 Atlas and Atlas Cross Sport models built for the 2019-2023 model years.  The issue stems from a connection with the wiring harness that runs from the A-pillar into the door. VW says that harnesses produced by one of its suppliers were not built with additional measures to prevent movement at the connection point. Small movements can cause abrasion of the metal contacts which could lead to a whole host of electronic misadventures, including the potential for airbag deployment to be delayed in a crash.  "Micro-movement of the wire harness (terminal A-Pillar to front door) can result in damage to the wire terminal surface. Damage to the surface can [result] in fretting corrosion which may cause sporadic interruption in the electrical connection to the components of the front door," VW said in its defect notice. "The airbag warning light may illuminate if a malfunction is detected. Other symptoms of a sporadic interruption of the affected electrical connection can be: inadvertent rolling down windows, inadvertent park brake engagement at low speeds (below approx. 3km/h or 1.8mph), warning regarding faulty door sensor," VW said.  Not every model built within the range defined above is subject to the recall; terminals from other suppliers were manufactured with the necessary safeguards in place. If you own a 2019-2023 Atlas or Atlas Cross Sport, keep your eyes peeled for a notification from VW regarding the campaign, likely some time in early-mid May.  PHEV problems Across the Atlantic, the VW Group mothership confirmed that it will recall more than 100,000 plug-in hybrid models worldwide to address a fire risk. The recall was launched in response to 16 reported incidents of fires stemming from insufficient insulation of the PHEV battery pack that allows the engine cover to make contact if it is not completely secure. If that happens, the heat from the battery can ignite the engine cover. The recall will cover PHEVs build by VW, Audi, Seat and Skoda, Reuters reports, including the VW Passat, Golf, Tiguan and Arteon — plug-in variants of which are not sold in the United States.