Maxwell Technologies has signed a memorandum of understanding with Valeo covering a development collaboration to incorporate Boostcap ultracapacitors in the next generation StARS+X stop-start and regenerative braking system.
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The new starter alternator reversible system consists of a reversible starter-alternator, a multi-cell ultracapacitor energy storage module and other power and control electronics in a 14-volt architecture that enables standard petrol and diesel engines to shut down during idle phases and restart instantly. Valeo estimates that the system can reduce fuel consumption and associated emissions by about 12% in normal operation and more than 20% in stop-and-go urban traffic.
The first generation system, with no dedicated energy storage component, initially was offered in some European passenger car models in 2004.
The new architecture incorporates enhanced electronics and an ultracapacitor energy storage module that allows it to recuperate and store energy from braking, which otherwise would be dissipated as friction and heat in a conventional braking system.
The recovered energy is then available to power peak electrical loads such as de-icing and rapid cabin and seat heating and cooling, avoiding increased fuel consumption for such functions.
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By GlobalDataThe MOU also covers terms of a proposed multi-year development and supply agreement through which Valeo will source ultracapacitors from Maxwell.
