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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.

Audi moving ahead with Q1 crossover

Audi crossovers have been getting smaller with each passing year. What started with the Q7 has since downsized to the Q5, then to the Q3, and now reports coming in from Germany reaffirm speculation that Ingolstadt is preparing to go one more size down with a Q1.
The new pint-sized premium crossover would likely share the platform that underpins the Volkswagen Polo and Audi's own A1. Although the architecture has already been modified to accommodate all-wheel drive, Autobild suggests that the Q1 would be a front-drive-only affair, which might limit its appeal somewhat, but then most buyers probably wouldn't opt for all-wheel drive anyway.

Head of dieselgate clean up set to leave Volkswagen after a year on the job

After just over a year on the job, Volkswagen's compliance chief Christine Hohmann-Dennhardt is set to leave the automaker by the end of the month. In an announcement, Volkswagen confirmed the departure, saying the separation was due to a difference of opinions regarding the role and duties of the compliance chief. Automotive News Europe reports that there were frequent clashes between Hohmann-Dennhardt and senior Volkswagen employees. Hohmann-Dennhardt was brought in on last year to help manage the cleanup in the wake of the diesel emissions scandal. She came over to Volkswagen from Daimler, parent company of Mercedes-Benz. Before that, she served as a judge in Germany's constitutional court. Volkswagen hasn't announced a replacement. Related Video: News Source: Automotive News EuropeImage Credit: Getty Green Hirings/Firings/Layoffs Audi Volkswagen Emissions Diesel Vehicles dieselgate diesel emissions volkswagen diesel