Forums

Hybrid with Turbine engine

Hybrid with Turbine engine

I think Tesla is a great idea but you can already see the oil companies are dropping the price of gas. Other car manufacturers will always out price a vehicle like the Tesla unless Tesla can find a way to bring down the price or make a hybrid that runs fuel and battery.

It would be great to have a Hybrid care with Micro turbines that can run on just about anything for a longer period of time and cleaner than normal gas engines. The turbine can charge the battery and extend the cars driving distance way beyond other manufacturer’s hybrid vehicles. I think it would be great for Tesla to work with a company like Capstone Turbine to develop a hybrid vehicle!

ttoomm1 | 08. marraskuu 2013

This is not bad idea, electric cars with range extender on any kind of fuel. I suggest external heat turbine engine, which works on any kind of fuel, also on solar power.
Actually I have designed such an engine and if somebody see opportunity in this, not just for cars, also for replacing the old Stirling engines with this new technology, do not hesitate to write me : tomaz_and@yahoo.com

carlgo | 10. marraskuu 2013

Seem to have seen a number of turbine powered charger ideas over the years, some in national car and science magazines. It seems turbine gas mileage just isn't good. There were supposed to be new affordable high heat materials, etc that would change this, but evidently that hasn't happened.

Tesla batteries are right now range-adequate when there are enough fast chargers/swappers around. The cost and weight are the real issues to overcome and some sort of gas turbine booster would add to that problem, not solve it.

In fact, even the cost and weight issues are solvable right now. If there are enough fast chargers around, swappers being the fastest, then batteries can be made lighter and cheaper and these would be fine for most commutes and shopping, etc.

No reason you couldn't swap up to a big capacity battery for those long vacation trips, but those are heavy and expensive and not really needed for most normal driving, again if there are charger/swappers around. That is the key.

Brian H | 11. marraskuu 2013

carlgo;
I don't think a car can be built to operate safely at two widely differing weights.

Webcrawler | 11. marraskuu 2013

Not a bad idea they are very powerful for the size. A 200hp unit is in the 50-75lb range. They will also run on almost any fuel. They never worked well in traditional cars because of the high operation RPM range of the engine. No one could ever build a suitable gear reduction unit for these power plants. However, a generator could easily be wound to have almost any input RPM.

The main issue is emissions. The exhaust temps are quite high. These engines are difficult to lower the emissions as you have a hard time building a catalytic converter than can handle the necessary exhaust flow and not simply melt...

Jaguar built a prototype with this design....

http://en.wikipedia.org/wiki/Jaguar_C-X75

Joshua Burstyn | 11. marraskuu 2013

That Jag looks very cool. It's a shame it did not proceed to production. :-)

Brian H | 11. marraskuu 2013

The Superleapermobile, clears tall trailer hitches with a single bound!

Brian H | 11. marraskuu 2013

Oops, wrong thread. ↑↑

Brian H | 11. marraskuu 2013

The exhaust would discourage tailgating, for sure.

carlgo | 11. marraskuu 2013

Seem to have seen a number of turbine powered charger ideas over the years, some in national car and science magazines. It seems turbine gas mileage just isn't good. There were supposed to be new affordable high heat materials, etc that would change this, but evidently that hasn't happened.

Tesla batteries are right now range-adequate when there are enough fast chargers/swappers around. The cost and weight are the real issues to overcome and some sort of gas turbine booster would add to that problem, not solve it.

In fact, even the cost and weight issues are solvable right now. If there are enough fast chargers around, swappers being the fastest, then batteries can be made lighter and cheaper and these would be fine for most commutes and shopping, etc.

No reason you couldn't swap up to a big capacity battery for those long vacation trips, but those are heavy and expensive and not really needed for most normal driving, again if there are charger/swappers around. That is the key.

carlgo | 11. marraskuu 2013

Wha' happened to make this post twice...?

Brian, weight difference is not a problem. How about when the punter drives around and picks up 6 offensive linemen. Anyhow, you set up the suspension to handle the heavy weight properly then it handles even better when it is lighter. Also the air springs are uniquely capable of leveling things. And the battery is low and centrally located. Can't see this as a problem at all, weight-wise.

The S is a very heavy car, so the battery weight differences as a percentage of that are fairly insignificant. It is not like putting a huge battery in a Fiat.

Also, as you use up the battery the car gets lighter anyway...or simply mount a spoiler that provides lift depending on the weight of the car. It would only work at high speeds, but low speeds don't matter anyway. You could make it fly for short hops, so you could pass even on two-lane roads with heavy oncoming traffic as long as you could achieve takeoff speed.

Brian H | 11. marraskuu 2013

Lighter as you use up the battery? :D How many electrons per ounce?

Safety cert and testing is specific to the car weight.

Roamer@AZ USA | 12. marraskuu 2013

The car gets lighter as you use the battery ??? Your charge cord must get really heavy when it's charging the car and putting all that weight back into the battery.

Roamer@AZ USA | 12. marraskuu 2013

Gas Turbine are extremely efficient at high temps and constant steady loads. Also at high temps the emissions are low.

A small, ceramic gas turbine with an integral generator running at high RPM and a steady load would be amazing as a battery charging device.

Gas turbines are inefficient when used in a tradition vehicle with constantly variable RPM and loads.

carlgo | 12. marraskuu 2013

When the battery is almost filled up I alway turn off the charger and then tip the cable up so the electrons that are still in the cable flow into the car. Of course this can be heavy work until the cable is empty.

Brian H | 12. marraskuu 2013

Electrons are really light. You must've snuck some muons in there.

enmf93 | 12. marraskuu 2013

I think if there should ever be a hybrid Tesla vehicle, then it should be an electric hybrid with either hydrogen or fusion! :)

grega | 12. marraskuu 2013

If turbines were the most efficient at the right revs, wouldn't they be used in mid-sized generators?

I do think there might be a particular hybrid that the regular car companies haven't thought of. Series hybrids (aka Range Extended EVs) should have better gasoline efficiency in cities when their battery is low, because they generate power at the ideal efficiency instead of stop-start, and yet the MPG stats I've seen don't show that.

And yet most of the people who want extra range want it because of long range trips, where a parallel hybrid works better - a regular engine on the highway is better than a generator charging a battery for an electric engine. For 600 miles in the city, you'd be targeting taxis and courier vans etc.

So what's the ideal hybrid that no-one has thought of?