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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 confirms new Q1 to cross over into smaller territory

The latest Q3 is smaller in every dimension than the Q7 that launched Audi into the crossover back in 2006. It's over two feet shorter, four inches narrower, five inches lower and rides on a wheelbase that's nearly a foot and a half shorter. But in Audi's eyes, it's still not small enough.
That's why the German automaker has just confirmed that it will proceed with production of the oft-rumored Q1 crossover. The new line will form just one of 11 new models which Audi aims to launch by the end of the decade, and will be built starting in 2016 at the main plant in Ingolstadt where Audi currently makes the A3, A4 and A5.
Audi isn't saying much else about the Q1, confirming only that it will be based on a modular transverse-engine platform. But contrary to the brand's Quattro-centric image, it has been rumored to be offered in front-drive form only. One way or another, the business case for expanding Audi's crossover range is as suitably rock solid: The Q family accounts for over a quarter of Audis sold worldwide, with the Q5 accounting for over half of that to stand as the most popular in the range.

Autoblog Podcast #392

Episode #392 of the Autoblog Podcast is here, and this week, Dan Roth, Steven Ewing, and Chris Paukert talk about recent confessions by Autoblog Editors, the unconfirmed rumors that the 2015 Dodge Charger SRT Hellcat will show up at the Woodward Dream Cruise, and the release of the North American Car and Truck of the Year long list. We start with what's in the garage and finish up with some of your questions, and for those of you who hung with us live on our UStream channel, thanks for taking the time. Check out the new rundown below with times for topics, and you can follow along down below with our Q&A. Thanks for listening! Autoblog Podcast #392: The video meant to be presented here is no longer available. Sorry for the inconvenience. Topics: Autoblog editors come clean Dodge Charger SRT Hellcat to debut at Woodward Dream Cruise NACTOY long list released In The Autoblog Garage: 2015 Jaguar F-Type Coupe 2015 Subaru Legacy Limited 2015 Audi S8 2015 Alfa Romeo 4C Hosts: Dan Roth, Steven Ewing, Chris Paukert Runtime: 01:48:05 Rundown: Intro and Garage - 00:00 Editor Confessions - 34:48 Hellcat Charger Unveil - 59:56 NACTOY Long List - 01:09:51 Q&A - 01:25:43 Get the podcast: [UStream] Listen live on Mondays at 10 PM Eastern at UStream [iTunes] Subscribe to the Autoblog Podcast in iTunes [RSS] Add the Autoblog Podcast feed to your RSS aggregator [MP3] Download the MP3 directly Feedback: Email: Podcast at Autoblog dot com Review the show in iTunes