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Old 06-27-2006, 11:42 PM
lakedude lakedude is offline
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Default Is HSD a variable ratio transmission?

Quote:
Originally Posted by Double-Trinity
It is an elecrtic continuously variable transmission, not a mechanical CVT, mechanically it is always in top gear. It uses a single planetary gear set that "splits" the engine power between the mechanical pathway (in top gear), and the electrical pathways, which take advantage of the torque characteristics of the motors to act as a low gear. Blending the pathways results in continuously varying the torque. I voted "yes" by the way.
Weird, by your reasoning I would have thought that you would have picked "no" because you say " mechanically it is always in top gear" like the "no" option.

Perhaps I've not worded the question correctly. Based on my incomplete understanding of HSD I'm voting "yes". The reason is simple. The ICE spins faster (reguardless of the power path) when the car is going slower and then the ICE slows down relative to the cars speed as the car speeds up just like a regular CVT.

Last edited by lakedude : 06-30-2006 at 08:07 PM.
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