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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.

1956 DKW Audi electric van beautifully restored

These days, electric vehicles that make commercial deliveries aren't entirely rare. UPS has a small fleet in California, and at least 5,000 Renault Kangoo Z.E. models are in use by France's national postal service. But the history of this concept is much older. In fact, one of the companies represented by Audi's four rings had an example about 60 years ago. Audi Tradition just completed a full restoration of this blue 1956 DKW Elektro-Wagen to add to the company's collection of historic vehicles. It's quite a rare find because only two are still known to exist. Audi estimates that DKW built about 100 of these electric vans between 1955 and 1962, and they were primarily sold to energy companies, public utilities and battery makers. To create the EV model, DKW took its normal Schnellaster delivery van and replaced the model's two-stroke engine with an electric drivetrain. The vans weren't exactly speedy, though. The motor produced about 6.7 horsepower and lead-acid batteries offered 200 amp hours of power running at 80 volts. It gave the Elektro-Wagen a claimed range of about 50 miles and a 25 mile-per-hour top speed. Following the restoration, Audi took van to the island of Wangerooge in the North Sea to show it off. The location is perfect, too, because vehicles with internal combustion engines are banned on the island. If you can read German, feel free to find out more in the press release below. „DKW Elektro-Wagen" zu Audi heimgekehrt Einen von zwei verbliebenen DKW Elektro Schnellaster restauriert Klein-Bus einst auf der Nordseeinsel Wangerooge im Einsatz Audi Tradition prasentiert einen aussergewohnlichen Neuzugang in seiner historischen Sammlung: einen „DKW Elektro-Wagen" von 1956. Zwischen 1955 und 1962 produzierte die Auto Union GmbH in Ingolstadt DKW Schnellaster – etwa 100 davon als Elektro-Automobile, die das Unternehmen vor allem an Energieunternehmen, Stadtwerke oder Batteriehersteller verkaufte. Bei dem nun nach aufwandiger Restauration „heimgekehrten" Elektro-Schnellaster handelt es sich um ein besonderes Exponat: Der DKW fuhr auf der Nordseeinsel Wangerooge, wo Automobile mit Verbrennungsmotoren verboten sind. Normalerweise war der DKW Schnellaster mit einem Zweitaktmotor ausgestattet - der „Elektro-Wagen" hingegen mit einem funf Kilowatt (kw) leistenden Reihenschluss-Motor. Die seitlich in zwei Kasten gelagerten Bleibatterien hatten eine Nennspannung von 80 Volt und eine Kapazitat von 200 Amperestunden (AH).

Autoblog Podcast #402

Episode #402 of the Autoblog Podcast is here, and this week, Dan Roth, Steven Ewing, and Brandon Turkus talk about the Audi A3 TDI Challenge and luxury car features we not-so-secretly love. 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 rundown below with times for topics, and you can follow along down below with our Q&A. Thanks for listening! Autoblog Podcast #402: The video meant to be presented here is no longer available. Sorry for the inconvenience. Topics: Audi A3 TDI road trip Luxury features we're sort of ashamed we love In The Autoblog Garage: 2014 Land Rover LR4 2015 Aston Martin Vanquish 2015 Dodge Challenger R/T Scat Pack Hosts: Dan Roth, Steven Ewing, Brandon Turkus Runtime: 01:17:40 Rundown: Intro & Garage - 00:00 Audi A3 TDI Challenge - 42:51 Luxury Features We Love - 01:00:05 Q&A - 01:09:17 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 Podcasts Aston Martin Audi Dodge Land Rover Diesel Vehicles Luxury Performance aston martin vanquish