Scientists Invent Regenerative Shocks

by Jonathon Ramsey

Scientists at Tufts University have patented a shock absorber that converts compressive energy into electricity, which can then be stored in a hybrid vehicle's batteries. Called the Power-Generating Shock Absorber (PGSA), actually an electromagnetic linear generator, it uses "magnet arrays, high magnetic permeability spaces, coil winding arrays," and a linear electric motor to capture the energy of its motion and use it to charge the batteries.

The technology can be used on any vehicle that uses shocks and batteries, but its greatest application could be on trucks due to their higher mass and electricity-generation potential. Electric Truck, LLC has licensed the shock technology, which is predicted to generate between 2kW and 17kW of energy on an average road. According to the men who created it, "the percentage of recoverable power/energy for a 2,500 lb vehicle that employs four optimized design regenerative magnetic shock absorbers and whose average speed is 45 mph on a typical US highway is likely to be between 20% and 70%." Put four of those on a Prius and stay in town, and all of a sudden you're talking about interstellar gas mileage.

Full Article at Auto Blog


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