02 Audi A4 3.0 Quattro Sport 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.

2017 Audi Q7 First Drive

Automotive evolution rarely makes a great leap, instead creeping along from new model to new model at a predictable pace. Audi's new Q7, though, is like handing a Bic lighter to a Cro-Mangon man smashing rocks. In Europe the new version drops 700 pounds, almost enough to reclassify its species. Audi's fire-machine will arrive in America in early 2016, as a 2017 lighter model. We spent some time in the Swiss Alps flicking the 2017 Audi Q7. As far as revolutions go, the 2017 Q7 certainly looks new. It resembles a tall station wagon more than ever, at least in European trim. A little tweaking of the design wand has left the rear end boxy and angular. Our test models use an adaptive air suspension, and the the "all-road" setting lifts the Q7 about an inch, to the normal ride height for US models. Thus raised, the big Q looks more like an SUV. This Q7 represents the first of the Volkswagen Group's MLB-platform cars. Lighter and said to be more dynamic, MLB will underpin everything from the next-gen A4 to performance and luxury SUVs like the Porsche Cayenne, and Bentley Bentayga. With the structural improvements comes a diet heavy in aluminum, the prime reason for the previously-mentioned weight savings. When outfitted for our content and crash-safety specification, US-bound models will still be about 500 pounds lighter than before. But dramatic weight-savings isn't the Q7's only trick. The adaptive air suspension significantly changes the character of the Q7, especially in the sportiest Dynamic model. There's an optional all-wheel steering feature that improves turning radius, and helps with high-speed stability. This is not to be confused with Audi's Quattro all-wheel drive, which along with a panoramic sunroof and seven seats, comes standard on all stateside models. Under the hood, things aren't so different. Both available engines are reworked but largely the same. The supercharged 3.0-liter gas engine still makes 333 horsepower and 325 pound-feet of torque, but it's not as thirsty as it used to be. Expect a two or three mile-per-gallon bump once official EPA ratings arrive. That engine, as well as Audi's reworked 3.0-liter V6 TDI – good for 260 hp and 443 lb-ft once outfitted for the US – are mated to the ubiquitous ZF eight-speed transmission. The Q7's driving character greatly depends on where it is pulling power from. While the diesel model is capable, turbo lag cuts back on the satisfaction we normally derive from oil burners.

Audi calls R18 E-Tron Quattro its 'most complex race car'

Technically speaking, Audi's R18 E-Tron Quattro is quite technical. The German automaker says the diesel-hybrid is the "most complex race car" it's ever created. And we'll take their word for it. The Audi, which pairs a V6 turbodiesel powering the rear wheels with two electric motors, is all about connectivity, giving the car's crew the opportunity to constantly monitor the vehicle while it's racing. The car sends in a host of data each lap to the crew's computers, and the vehicle's telemetry system constantly keeps tabs on things like hybrid energy levels, cockpit temperature and boost-pressure levels. In all, the amount of data parameters is more than 100 times greater than in 1989, when Audi first tested a race car equipped with automatic data transmission capabilities. Audi first released specs on the updated version of the R18 E-Tron Quattro late last year, trumpeting the vehicle's advantages in competing in the LMP1 class of the 2014 World Endurance Championship (WEC). Audi made the car a little narrower and a little taller and it complies with a new WEC regulation requiring the front end set off by a new wing. Take a look at Audi's most recent press release below. AUDI R18 E-TRON QUATTRO WITH COMPLEX ELECTRONIC ARCHITECTURE • Telemetry connection between race car and pit lane • Permanent acquisition of far more than 1,000 parameters • Various electronic control units interlinked by a multitude of CAN Bus systems Ingolstadt, May 5, 2014 – The Audi R18 e-tron quattro is the most complex race car created in Ingolstadt and Neckarsulm to date. This not only applies to the mechanics. The electronics of the most recent LMP1 race car with the four rings is more sophisticated than ever before. The age of electronic data transmission from the race car on track began for Audi in 1989. At that time, an Audi 90 quattro in the IMSA GTO series radioed eight parameters to the garage where engine speeds and a few pressures and temperatures were plotted on printouts – a tiny step from today's perspective, but one that provided important insights at the time. Today, an Audi R18 e-tron quattro on more than a thousand channels, in cycles that in some cases only amount to milliseconds, generates data of crucial importance to a staff of engineers at Audi Sport. At Le Mans, the engineers constantly monitor their race cars for 24 hours.