geordi wrote:
See, if that is the reason that the design hasn't ever been built as a proof-of-concept, then I can accept that reason. It is a bulllshit reason, to avoid a patent fight with GE, but at least that makes more sense than the reasons I usually hear from the pro-hybrid crowd like "too much loss in the electrical conversions" or "every device is only 80% efficient so you lose 20% each step of the way."
Those reasons show that the person suggesting them hasn't a clue about how high voltage battery power works. Tesla figured it out, and they aren't dealing with 20% losses per step of the chain.
But by the same token, Tesla might also be obnoxious and disruptive enough to actually try to build something. I believe that if it was a question of patent, that GE would certainly want to investigate what anyone would be doing... BUT there are also limitations on patent fights. If it isn't being made using a copy of the design, or for the same purposes... Then that eliminates a couple big angles for lawsuits. The theoretical construct of "engine-makes-rotational-torque" plugged into the front end of an alternator (which is really nothing more than a driven magnet spinning inside a coil of wires) produces single or 3-phase AC power. Not much more technical than that, and I DOUBT that GE is getting a license fee from every generator manufacturer. It needs to be regulated for the desired use... But at that point, it is just a power source.
The back end control systems for making that back into rotational energy at the wheels... THAT is something that Tesla has developed, and I'm sure they have it patented to themselves... Now if the kilowatts are coming from a battery source or an active generator source... I don't think it steps on GE's designs.
Aren't they using turbojets in the newest engines? Or are they still just BIG honking diesel piston drives for that genset? - I'm genuinely curious about that. It would seem more efficient to use a turbojet to drive the powerhead.
GE doesn't hold all the patents on series -hybrid diesel technology.
Progress Rail uses CAT gensets in its locomotives.
And those giant CAT dump trucks working in the open pit mines, they uses series - hybrid gensets also.
I'd like to think that if series - hybrid diesels were to work in OTR trucks, CAT would have tested that and proved it's worthyness.
But I also know that many European companies have tested and are still working on series hybrid designs.
Yes GE has done turbine gensets and they work great. They also use a lot more fuel. Alternators can't spin at turbine speeds. Gear reduction is needed and therefore efficiency is lost.