Quote:
Originally Posted by dcb
No, because you can add a "granny gear" to a regular transmission, with a lot greater transmission efficiency than driving a generator driving a motor. The inefficiency of such a setup will marginalize/negate your ability to downsize the engine.
|
curious
If you are so certain it is such a bad design concept ... so horribly low efficiency ... I am curious ... why do you think it is that none of the trains operate as you suggest? ... what is it that all those engineers and manufactures don't know that you do?
Quote:
Originally Posted by dcb
It is referred to as "dynamic braking", it isn't actually storing any energy though, just heating resistors.
|
Not always... that is what they do with the excess / surplus.
Even if it is just used for heating resistors ... braking is not a function of just a transmission... and it forces the drive motors to be more than just a transmission... even is you are just adding brakes to the list.
- - - - - - - -
So if I am reading you correctly ... you are suggesting that the word hybrid itself suddenly has a drastically different meaning when applied to a vehicle , than it does in every other application of the term hybrid?
By your description it seems all the other uses of the word hybrid for plants , animals, insects , etc ... all of which predate the use of it for vehicles ... from your description all those are using the word incorrectly??
It would seem to me when the tiny minority started to use it differently in terms of vehicles , they were using the term incorrectly.
- - - - -
one other curiosity ... if a train has access to either the grid for power as a trolley ... or a on-board generator ... and it can use either source ... even if it still has no batteries ... would you still not call it a hybrid?