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The Fine Print: The following comments are owned by whoever posted them. We are not responsible for them in any way.
byAnonymous Coward writes:
Why are we even arguing about the range of batteries? Just start building good electric only automobiles already. The source of the power is irrelevant.
How hard is it to manufacture a light weight mini gas generator trailer you can pull behind your electric vehicle?
Why can't we simply build the best damn electric car technology allows, without crudding it up with all kinds of hybrid gas engine transmission shit? An external generator would be way more efficient if it didn't need to an over engineered dri
byGigsVT ( 208848 ) writes:
Series hybrids are really inefficient in small sizes. I've built one. It mostly sucked.
They have to do all the convoluted series-parallel shit because it's the only thing that even gets you a slight edge over straight gasoline in those sizes.
I think someone once said the first rule of engineering is that nothing scales. That's true for scaling down as well. The things that work well in a 4400HP train engine that rarely varies its output aren't going to necessarily work in a 150HP car that has to go zero
byholmstar ( 1388267 ) writes:
Maybe there's some issues I've never heard of with regard to series hybrids, but it sounds to me like your series hybrid wasn't designed/engineered very well. Properly designed, a series hybrid should fairly easily outperform a parallel hybrid since the engine doesn't need to operate over a broad range of speeds. If your series hybrid was forcing the engine to run at variable speed, then yes, you aren't going to see much advantage.
Also, the caparison to trains is invalid, as trains generally aren't hybrids. I concede that there are a few true-hybrid trains out on the market, but in the vast majority of cases, diesel electric trains have a diesel engine powering a generator, from which cables run directly to the drive motors. This is used because it's more robust and less complicated than a mechanical transmission. Probably more efficient as well. But these trains do not store braking energy in a battery for later use, thus they are not hybrids. They just have an electric transmission.
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byGigsVT ( 208848 ) writes:
That's a funny definition of hybrid. Since when does regen braking define hybrid?
You are wrong anyway, a lot of trains do use regenerative braking, either for prime energy, or to supplement head end power (aux loads).
If a small series hybrid is so great and easy, why aren't they out there? The only full series hybrids I've heard of are prototypes and large busses.
So, if it's so easy, go build it and get very rich.
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