eROT
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Audi's active suspension converts road jolts into electricity
Regenerative brakes capture a lot of wasted energy in hybrid and electric cars, but there's another energy source automakers could exploit: potholes. To harness those tailbone scourges, Audi developed an active suspension called eROT that replaces hydraulic shocks with electromechanical ones. "Every pothole, every bump, every curve induces kinetic energy in the car," says Audi's Dr. Stefan Knirsch. "With the new electromechanical damper system in the 48-volt electrical system, we put this energy to use.
