Supercapacitors may help bring fuel economy to mass production in France. Valeo SA and PSA Peugeot Citroen are using them to add propulsion power to a cheap mild-hybrid system that would double the power of Valeo’s Stop & Start technology and allow it to accept braking energy and provide torque boost through the alternator belt.
Supercapacitors long have been discussed as a way to capture braking energy, because they can endure perhaps millions of charge-recharge cycles, and because they accept and discharge electricity faster than a battery.
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