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Thursday, September 27, 2012

Mazda's i-ELOOP: Mild Non-Hybrid Regen

Mazda is promoting its new i-ELOOP regenerative braking technology as part of its "Skyactiv" suite of fuel saving technologies.

i-ELOOP is a system that uses a capacitor to store electricity from the alternator, which is controlled so that it generates electricity mostly during deceleration.  

So this is a regen system which runs from the belt driven alternator, and the small amount of energy it captures is used not to move the car but only to recharge the battery and run the electrical system.

This isn't hybridization, it is just alternator duty cycle optimization.  It won't save much fuel, maybe 3-5%, but on the other hand, it won't cost or weigh much either.  

The big fuel economy savings are when you store lots of energy from braking in a battery or super-capacitor, and then use that power to re-accelerate the car.  Mazda, however, isn't up to making the investment, apparently.

1 comment:

Cherie Duane said...

Does this system allow for 'passive boost' - have the alternator charging the battery only during braking? I saw a presentation from BMW a while ago that with start stop and regen braking, the fuel savings would be more like 10 to 15%...