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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 takes cars that park themselves to a whole new level

Autonomous cars are impressive displays of in-car technology, but what exactly would the benefit of such systems be for the average driver? Audi has answered that question by showing off its Piloted Parking system for the Audi Connect at CES 2013.
Installed on this Audi A7, Piloted Parking allows a driver to drop themselves off and have the car autonomously drive away on its own and find its own parking spot. The car can then later be retrieved by "calling" it back with a specially designed smartphone app. We'd be lying if we said this didn't bring back memories of Michael Knight summoning KITT with his wristwatch. The most impressive part of this car might be the fact that the car is fully autonomous but doesn't have any obvious sensors or monitors on the exterior of the car like many other self-driving cars have.
Check out a video of the this innovative technology in action after the jump.

Lexus gets top brand marks from Consumer Reports; Ford, Jeep hit hard

Consumer Reports has released its 2014 Car Brand Report Cards, with Lexus again reigning at the top and doing so with the same industry-topping score of 79 that it registered in last year's Report Cards. This year, the institute credited its lineup for being "usually quiet, comfortable, and fuel-efficient," noting it's the only brand on the list "to achieve an excellent average overall reliability score." The Car Brand Report Cars list is meant to rank the best all-around vehicles based on CR testing and reliability results tallied by subscribers it surveyed. Each brand included must have sufficient test and reliability data for at least three models, a standard which left out 11 marques including Fiat, Jaguar, Land Rover and Porsche.
This 2014 Brand Report Cars edition is the first of a new format in which sub-brands have been broken out from their parent brands, with Acura using this year to move up the leaderboard into second place with a score of 75 for its "reliable, well-finished and somewhat sporty models." The top three was rounded out by Audi, climbing from eighth to third by scoring a 74 for "well-crafted interiors, nice handling and good gas mileage." Audi scored highest in the road-test portion, its improved reliability aiding its rise. The top nine was completed by Subaru, Toyota, Mazda, Honda, Infiniti and Mercedes-Benz.
Ford and Jeep weighed in at the other end of the rankings, Jeep taking the lowest overall score in the road tests and hampered by "a mix of spotty reliability." Ford was sunk by reliability issues with its MyFord Touch infotainment system which consumers found troublesome enough to negate its cars earning "solid test scores" for being "very nice to drive." Perhaps the rumored switch from Microsoft to Blackberry's QNX for the next generation SYNC will help them out. Cadillac's score also took a hit for infotainment reasons after it was the leading US brand last year, the CUE system in the XTS dragging Cadillac to the bottom of all General Motors brands.