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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 TT Offroad concept packs 408 hybrid horsepower, yet returns 123 mpg

Audi took the wraps of its TT Offroad Concept at the Beijing Motor Show, after teasing us with sketches earlier this month. "The Audi TT offroad concept provides a glimpse of how we might imagine a new model in the future TT family," says Prof. Dr. Ulrich Hackenberg, Member of the Board of Management for Technical Development. "It combines the sporty genes of the TT with the strengths of a compact Audi SUV."
The latest in Audi's eTron show cars reminds us an awful lot of the the Audi Allroad Shooting Brake concept that debuted a few months ago at the Detroit Auto Show. In addition to very similar physical appearances, the two share the same plug-in hybrid propulsion systems (the "plug-in" part is a bit misleading, as the concept simply needs to be parked over an inductive pad to take advantage of Audi Wireless Charging technology).
Proving that hybrid power never has to be a compromise, the TT Offroad Concept packs a 292 horsepower turbocharged 2.0-liter four-cylinder under the hood. The combustion engine is assisted by two electric motors (rated at 40 kW at the front and 85 kW at the rear) to provide a total system output of 408 horsepower and nearly 480 pound-feet of torque. With all-wheel drive, the concept hits 60 mph in 5.2 seconds and tops out at 155 mph - while returning a provisional fuel efficiency of 123 miles per gallon equivalent.

VW may move production because of Russia's cutoff of natural gas

Volkswagen AG is exploring ways to counter a shortage in natural gas, including shifting production around its network of global facilities, signaling how the energy crisis unleashed by Russia’s invasion of Ukraine threatens to upend EuropeÂ’s industrial landscape. Volkswagen, EuropeÂ’s biggest carmaker, said Thursday that reallocating some of its production was one of the options available in the medium term if gas shortages last much beyond this winter. The company has major factories in Germany, the Czech Republic and Slovakia, which are among European countries most reliant on Russian gas, as well as facilities in southern Europe that source energy from elsewhere. “As mid-term alternatives, we are focusing on greater localization, relocation of manufacturing capacity, or technical alternatives, similar to what is already common practice in the context of challenges related to semiconductor shortages and other recent supply chain disruptions,” Geng Wu, VolkswagenÂ’s head of purchasing, said in a statement.  RussiaÂ’s decision to throttle gas supplies to Europe has raised concerns that Germany might be forced to ration its fuel. Recent news that gas storage levels hit 90% ahead of schedule has soothed fears of acute shortages this winter, but Germany faces a challenge in replenishing depleted reserves next summer without contributions from Russia. Southwestern Europe or coastal zones of northern Europe, both of which have better access to seaborne liquefied natural gas cargoes, could be the beneficiaries of any production shift, a Volkswagen spokesman said by phone. The Volkswagen group already operates car factories in Portugal, Spain and Belgium, countries that host LNG terminals. Labor hurdles To be sure, any major production shift away from EuropeÂ’s biggest economy would face significant hurdles. VW has some 295,000 employees in Germany and worker representatives account for around half the companyÂ’s 20-member supervisory board. Any shift in production would likely involve a limited number of vehicles rather than wholesale factory shutdowns. While gas supplies for VWÂ’s plants are currently secured, the company has identified potential savings at its European sites to cut gas consumption by a “mid-double-digit percentage,” said Michael Heinemann, managing director of VWÂ’s power-plant unit. Still, the carmaker said it was concerned about the effect high gas prices could have on its suppliers.