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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.

2014-15 Audi SQ5 recalled for steering issue

Audi is recalling 5,625 SQ5 crossovers from model years 2014 and 2015 due to a fault in the electric power-assisted steering system. The affected vehicles were built between May 22, 2013 and April 14, 2015. The vehicles in question may experience power-steering shutdowns in cold conditions. Good thing the US' average July temperature sits in the mid 70s. The actual root of the problem is a fault in the steering motor sensor, according to the bulletin from the National Highway Traffic Safety Administration. While manual steering would still be available, the sudden loss of power could catch drivers off guard, increasing the chances of a crash. Owners of the affected vehicles will be notified by Audi USA, and will need to report into dealers for a software update to the power steering control module. Scroll on down for the official notification from Audi. Report Receipt Date: JUL 20, 2015 NHTSA Campaign Number: 15V452000 Component(s): STEERING Potential Number of Units Affected: 5,625 Manufacturer: Volkswagen Group of America, Inc. SUMMARY: Volkswagen Group of America, Inc. (Volkswagen) is recalling certain model year 2014-2015 Audi SQ5 vehicles manufactured May 22, 2013, to April 14, 2015. The affected vehicles have an electric power steering assist system that may shut down in cold temperatures due to a steering motor sensor fault. CONSEQUENCE: If the vehicle experiences a loss of power steering assist, extra steering effort will be required at lower speeds, increasing the risk of a vehicle crash. REMEDY: Volkswagen will notify owners, and dealers will update the power steering control module software, free of charge. The recall is expected to begin July 28, 2015. Owners may contact Audi customer service at 1-800-253-2834. Volkswagen's number for this recall is 48M1. NOTES: Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.

CARB found another emissions-defeating device, this time from Audi

The California Air Resources Board has discovered another emissions-cheating device on an Audi earlier this summer, reports German newspaper Bild am Sonntag. The device is different from the software found in the VW Group's diesel-powered engines, as it alters the way the cars' automatic transmission shifts. The latest device, according to Bild am Sonntag, measures how far the cars' steering wheel is being turned. If the wheel is turned less than 15 degrees, indicating that the vehicle is being tested in laboratory conditions, a program in cars with certain automatic transmissions changes the way the gearbox shifts. The change in the transmission allows the engine to produce less carbon dioxide than when driving in normal conditions. When the wheel is turned more than 15 degrees, the program automatically turns off, claims Bild am Sonntag. The paper reports that Audi took the software out of its vehicles, which was used in both diesel- and gasoline-powered vehicles in Europe and the US, earlier this May after CARB discovered the program on one of the automaker's older cars. Several engineers that were connected with the emissions-cheating device have already been suspended, reports Bild am Sonntag. As the German newspaper points out, the device, which is fitted to certain Audis with an automatic transmission, is different from the cheat devices found on the automaker's 3.0-liter TDI turbodiesel V6 engine and Volkswagen's 2.0-liter turbodiesel motor, even those were also designed to beat emissions tests. The 3.0-liter engine is found in the Audi Q7, Volkswagen Touareg, and Porsche Cayenne models. Audi didn't immediately respond to our request for a comment. Related Video: News Source: Bild am Sonntag via ReutersImage Credit: Reuters / Michaela Rehle Government/Legal Green Audi Volkswagen Emissions Diesel Vehicles vw diesel scandal