Turbo Parallel Hybrid, Li-ion Capacitor

Sep 23, 2005 2 Replies
M

I was trying to get a better perspective on 2 technologies mentioned in this article:



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Firstly it mentions Turbo Parallel Hybrid, and nextly it mentions Lithium-ion capacitor.



Sorry to be dense, but I had a little trouble understanding what they wrote. What exactly is the Miller Cycle used by this engine setup? I know what the Otto Cycle and Diesel cycle are, but I've never heard of the Miller cycle. I don't understand where it's pulling the extra efficiency out of. Sounds like it's relying upon a crutch like an electric motor to take care of low-velocity, like other hybrid-electrics, but I still don't understand how it's different/better.



Nextly, I know what Lithium-ion batteries are, and I've read about supercapacitors. But I'm unsure of what Li-ion capacitors are, or how they achieve better energy density while maintaining rapid charge/discharge.



Anyone care to enlighten?



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D

" snipped-for-privacy@yahoo.com" wrote in news: snipped-for-privacy@g14g2000cwa.googlegroups.com:

Got a problem with Google? I got a number of hits explaining how the Miller cycle works. (Why should I make this easy for him, eh?)

A high-density capacitor in parallel with the battery; the battery is current-limited, while the capacitor has limited energy storage but can provide very high current for a short time. Each complements the other's shortcomings, to a point, of course. The Li-ion capacitor sounds like a slightly exotic variation on an ordinary electrolytic capacitor and can provide higher voltages than a carbon supercapacitor.

The overall design sounds a bit busy and more expensive, but apparently provides more power for tradionally anemic hybrid vehicles.

--Damon

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H

Very first hit in Google:

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