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i-Eloop in the new Mazda 6: Unusual recuperation system

i-Eloop in the new Mazda 6
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E In August the time has come. Then Mazda presented the Mazda 6 series at the Moscow Motor Show. This is the first time that a braking system is used that uses recuperation to store kinetic energy in a double-layer capacitor rather than in a conventional battery. Such capacitors have been in use as “super caps” in test vehicles for several years.

A capacitor (capacitor or short: cap) basically consists of two metallic conductors (electrodes) between which an insulator is located is located. If voltage is applied, the electrodes charge each other equally but differently (plus and minus), attract each other accordingly and thus maintain the charge - they save.

i-Eloop consists of a capacitor and a generator , DC voltage converter

The system, which weighs around eight kilograms and goes by the name of “i-Eloop” (Intelligent Energy Loop), consists of the aforementioned capacitor, a generator and a DC voltage converter. As soon as the driver of the Mazda 6 takes off the accelerator, switches to coasting mode or brakes, the generator generates electricity that flows to the capacitor for storage. The memory is 'full' within a few seconds. The connected voltage converter reduces the voltage again to values ​​compatible with the on-board network (twelve volts) and supplies the electrical components such as power steering, water pump, air conditioning or sound systems with electricity via the on-board network. Excess energy is fed into the starter battery. The system thus relieves the generator driven by the combustion engine - and this effect leads to the hoped-for lower consumption.

Another advantage: In contrast to the known hybrid systems, this form of short-term storage does not require an additional or optimized battery or a heavy electric motor . In addition, capacitors can be charged and discharged significantly faster and more frequently than lithium-ion batteries and can withstand temperature fluctuations better. Mazda expects i-Eloop to reduce fuel consumption by around ten percent - then the system would have a great future.


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