Audi Plans Suspension That Produces Energy to Help Save Gas

Stephen Elmer
by Stephen Elmer

Audi is working on a new suspension system which can produce energy that can be put to good use within the car.

Audi calls its prototype eROT, which is a set of electromechanical rotary dampers that are able to use potholes, bumps and curves to produce energy for the 48-volt electrical system. It works by using a lever arm that absorbs the motion of the wheel carrier, converting it into energy. Audi says that during testing, its prototype regained 3 watts on a freshly paved highway and 613 watts on a rough secondary road.

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Besides being able to generate electricity, the dampers are actively controlled, which means that they should provide an even better ride. A revised geometry also helps with packaging the cars, allowing more luggage space to be added thanks to the horizontally arranged electric motors in the rear axle.

To work, the vehicle needs a 48-volt electrical system, which is a system that Audi is moving towards in all of its vehicles. The brand says that a new prototype that is in the works for 2017 will be able to feed a “high-performance mild hybrid drive,” offering the potential to save up to 0.7 l/100km in fuel economy.

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Stephen Elmer
Stephen Elmer

Stephen covers all of the day-to-day events of the industry as the News Editor at AutoGuide, along with being the AG truck expert. His truck knowledge comes from working long days on the woodlot with pickups and driving straight trucks professionally. When not at his desk, Steve can be found playing his bass or riding his snowmobile or Sea-Doo. Find Stephen on <A title="@Selmer07 on Twitter" href="http://www.twitter.com/selmer07">Twitter</A> and <A title="Stephen on Google+" href="http://plus.google.com/117833131531784822251?rel=author">Google+</A>

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 3 comments
  • Smartacus Smartacus on Aug 11, 2016

    i'm all for the eROTIC, but how much cost and complexity does it add?

    • Perry F. Bruns Perry F. Bruns on Aug 11, 2016

      That's an appropriate name considering one of the most fun ways to test the suspension on a car. ;)

  • Craig Cole Craig Cole on Aug 12, 2016

    I seem to recall Toyota developing something similar six or seven years ago but the weight, complexity and efficiency didn't pay off.

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