2008 Audi A4 on 2040-cars

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Audi is working on a suspension that gets power from bumpy roads

Regenerative brakes aren't new. They're on virtually every hybrid and EV, and they're even starting to pop up on traditional gas-powered cars, like with the i-ELOOP-equipped Mazda6. But even with these systems, cars can get more efficient, and Audi thinks it found yet another source of wasted energy. The source? The suspension. The idea is to turn the kinetic energy that goes into the dampers into usable energy instead of as waste heat. Audi isn't the first auto company to come up with regenerative suspension – nearly three years ago, ZF introduced its GenShock technology, which used a valve attached to traditional, oil-filled hydraulic shocks to recapture kinetic energy from movement caused by bumps in the road. Audi's prototype technology, which it calls eROT, replaces traditional dampers with horizontally oriented electromechanical rotary dampers. eROT is apparently short for electromechanical rotary damper. Neat. In testing, eROT recovered an average of 100 to 150 watts on a typical German road, three watts from a fresh piece of pavement, and 613 watts on a rough stretch of tarmac (wattage is calculated as power over time, so this is actually the rate at which the system harvests energy). The dampers channel that energy to a tiny, 0.5-kWh, 48-volt battery. The prototype is claimed to cut CO2 emissions by three grams per kilometer (4.8 grams per mile), while the company believes a future production version could save up to 0.7 liters of fuel per 100 kilometers of driving. Converting the savings to American miles per gallon isn't easy, so we'll use a practical example. In the US, the Q7's supercharged 3.0-liter V6 returns a combined rating of 21 miles per gallon, which works out to 11.2 liters per 100 kilometers. Apply eROT's 0.7L/100km savings, and the Q7's economy would improve to 10.5L/100km, or 22.4 mpg, a 1.4-mpg improvement. That's not huge, but because math, 0.7L/100km is more dramatic on a more fuel efficient vehicle – taking an A3's 27-mpg combined rating and adding eROT would drive efficiency up 2.4 mpg, for example. There are a few other big benefits beyond fuel and emissions savings – Audi claims eROT provides a more comfortable ride than traditional active suspensions, because engineers can tune the compression and rebound strokes independently of each other. Beyond that, the horizontally oriented rear suspension geometry means more cargo space, since the dampers don't poke up into the cabin like they normally do.

A magical, disappearing ad for the hydrogen Audi A7 Sportback H-Tron

It's not quite Tupac appearing at Coachella with Snoop Dogg and Dr. Dre in hologram form, but it'll do for the gearhead set. Audi is looking to make a first impression for its A7 Sportback H-Tron hydrogen fuel-cell vehicle by making as little of an impression as possible. Like the car itself, Audi has, as it says in a video, "created ads that leave behind nothing but vaporized water." Pretty slick. Audi worked with German advertising agency Thjnk, on the campaign, which uses LED lighting and other bits of magic to first show an image of the sedan and then show it disappearing into a cloud of steam, according to Adweek. The publication posted Audi's 58-second video on the campaign (we've embedded a German version of the video for those looking to practice a bit of linguistics). The German automaker first revealed details about the A7 Sportback H-Tron late last year. The all-wheel-drive sedan can go as far as 31 miles on electricity alone. And the hydrogen fuel-cell drivetrain delivers almost 400 pound-feet of torque and a full (hydrogen) tank's range of 311 miles as well as a 0-62 mile per hour time of less than eight seconds and a top speed of 112 mph. Featured Gallery Audi A7 Sportback H-Tron Quattro View 83 Photos News Source: Adweek via Hybrid Cars Green Marketing/Advertising Audi Hydrogen Cars billboard adweek

Audi to enter third R18 following Loic Duval's huge crash

When we saw the picture above yesterday, our first thought went to driver Loic Duval. After hearing that he, miraculously, walked away from the annihilated heap that had been the number one Audi R18 e-tron Quattro, our next thought went Audi's hopes in this year's 24 Hours of Le Mans. With the race kicking off on Saturday, we couldn't be sure if the team would run a two-car effort (that would put them on even footing with the two-car teams of Porsche and Toyota), attempt to rebuild the decimated racer or bring in a new tub and start from scratch.
Turns out, Audi opted for door number three, importing an all-new chassis to replace the destroyed R18. According to Audi, the team pulled an all-nighter to ready the new car in time for scrutineering and the second round of qualifying.
After a lot of hard work the rebuilt #Audi R18 e-tron quattro No. 1 is almost complete #R18 #LM24 @FIAWEC pic.twitter.com/xicPj0wScW