Automakers are examining a variety of technologies to enhance fuel economy. But a group of undergraduate students at the Massachusetts Institute of Technology has found an overlooked source: shock absorbers.

When a car’s wheel hits a hole or bump, a standard shock absorber disperses the impact energy through hydraulic fluid and moves a piston. In the M.I.T. design, the fluid is instead forced through a small turbine attached to a generator. The generator, powered by the compressions, can recharge batteries or power the vehicle’s electrical equipment. The students say that for heavy vehicles such as Hummers, the system can boost fuel efficiency from 2 to 10 percent, depending on the terrain. They have formed Levant Power Corporation to commercialize a product they are calling GenShock. Right now they are tailoring GenShock for U.S. Army vehicles and big-rig trucks, but it could possibly be adapted for passenger vehicles.

“This is our flagship product,” says Shakeel Avadhany, a senior at M.I.T. and the company’s chief executive officer. But he adds, “We’re looking to come up with innovative solutions for everything on wheels.”

Note: This article was originally printed with the title, "Power from Potholes."

4 Comments

1. 1. hotblack 11:24 AM 7/9/09

   In the early 90's, while working at Trek Bicycle Corp, I worked on a hydraulic drivetrain that included both regenerative braking and suspension. Nice to see automotive starting to make some progress...

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2. 2. rb3000 02:35 PM 7/9/09

   great, there are a lot of potholes in California right now

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3. 3. Blue Fire 05:21 PM 7/9/09

   Now, why hasn't anybody thought of this before? But, If this technology catches on, they are going to have to beef up the tires and frames of vehicles just for those drivers thinking to increase their mileage by hitting every freakin' bump and pothole their spinal columns can take! :-)

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4. 4. CB_Brooklyn 05:12 PM 7/12/09

   What can power your Honda?
   
   According to the BBC.... AIR
   According to Reuters... WATER
   
   BBC NEWS VIDEO:
   The Air Powered Car
   http://video.google.com/videoplay?docid=2228669770213573581
   
   REUTERS NEWS VIDEO:
   The Water Powered Car
   http://www.youtube.com/watch?v=CrxfMz2eDME

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