Leave it in the past!!!! First of all, Its off topic so I don't think its necessary!!! Secondly..... Well there is no "Secondary".... Just move on.....
Tv said:
Sounds like you have not given up your grudge yet tvtech?
If you and mickster want to step into the ring and go few rounds with me just let EM know and I will be happy to oblige the both of you otherwise I suggest leaving the nasty little critters sleep. A lot more went on behind closed doors than either of you are aware of.
Tv said:I had an irritating little pest of an animal that refused to go away. No matter how many times it was thumped on the head.
It irritated everyone because it thought it was clever. And bit people all the time. Nasty, vindictive little critter.
It got to the stage where I could not even give it away.
One morning....all on it's own, it left. I felt sad for it as it simply went away. I never found it again and never even really bothered to look for it.
I felt sorry for it that it did not even bother to bite the hand that fed it.
It just went away and never bothered with even a bite. It probably realized it had screwed up and decided to go away.
Sad story. I know humans like that too.
You don't need an engine to turn a generator to charge the batteries. You could maybe have small hydraulic pumps turned by the wheel axles to power the generators. No need for gasoline at all.Keep in mind how long it took for cars to become as reliable as they are now. In the old days, cars were much simpler, but still not all that reliable. With modern approaches, even very complex systems can be made reliable, but it takes time on the engineering side to work out problems that are found on the road.
We haven't mentioned it here, but the real problem is not so much the battery capacity, but the time it takes to charge the batteries. If you could charge the batteries in a few minutes (comparable to filling a gas tank), the lower range would not be a big issue because you just need to stop more often to "fill up". But, batteries take hours to charge from a socket, which is why I think an internal combustion engine is a good thing to have for continuous charging for long trips. Perhaps another solution is to have removable battery modules. Then instead of going to the station to fill up gas, you go there to swap your batteries. Companies could charge for the rental of batteries and for the energy used. The car owner would not even need to get the batteries when he purchases the car.
Anyway, we are starting the process of a major evolutionary change in automobile design and it is not all that clear exactly where we may end up. Also, I think it is strange that someone like myself, who does not know all that much about car design, and the mechanical engineering side of automobiles, may be somewhat of an expert on car technology once this evolutionary step is complete.
My point was not that you necessarily need the gasoline, but only that it is a desirable feature to have a gas engine available to charge the batteries for long trips. Think about it. If you don't have available battery swap stations, then an all electric car can not make long trips very fast. The range is not all that impressive and once you are out of charge you have to wait several hours to recharge. This isn't practical for all people.No need for gasoline at all.
You don't need an engine to turn a generator to charge the batteries. You could maybe have small hydraulic pumps turned by the wheel axles to power the generators. No need for gasoline at all.
How do the hydraulics make it any more efficient than just an engine transmission and differential? Or a DC motor and a differential? I can see the hydraulics where you need huge torques and I guess automatic transmissions are hydraulic, but.....
I agree. What I'm saying is that they need to think of ways to charge the batteries while the vehicle is moving. You could use a pneumatic pump to turn the generators also instead of hydraulic pumps. A small pump could turn a generator easily. But they want to make money from people buying electricity. They are all so greedy!My point was not that you necessarily need the gasoline, but only that it is a desirable feature to have a gas engine available to charge the batteries for long trips. Think about it. If you don't have available battery swap stations, then an all electric car can not make long trips very fast. The range is not all that impressive and once you are out of charge you have to wait several hours to recharge. This isn't practical for all people.
I agree. What I'm saying is that they need to think of ways to charge the batteries while the vehicle is moving. You could use a pneumatic pump to turn the generators also instead of hydraulic pumps. A small pump could turn a generator easily. But they want to make money from people buying electricity. They are all so greedy!
What I'm saying is that they need to think of ways to charge the batteries while the vehicle is moving. You could use a pneumatic pump to turn the generators also instead of hydraulic pumps. A small pump could turn a generator easily.
Yes, that's what I mean - systems to use to charge the batteries while the vehicle is moving. Even if they can't keep the batteries fully charged even while you are driving, they could at least increase the range of the vehicle between plug-in charging.I'm not sure I'm following your point. It's not clear how you avoid buying electricity with an electric car. Greed (which always exists) aside, there are some nice long term benefits possible with electric power. Although we are not fully there yet, much electricity comes from hydro-plants, and the future should see use of more renewable energy such as solar, wind and ocean power. This means that a higher percentage of non-carbon energy would be used. This is a long term concept and it will be a while before it really makes full sense, but the technology evolution takes time anyway.
If you are just talking about more efficient use of energy by using regenerated energy while driving, then I agree with you that recharging is important, but this concept is already in effect. The nice thing about electric motors is that they naturally can be run in reverse as electric generators. Also, inverters can be run in reverse as rectifiers. Hence, recapturing mechanical energy and recharging batteries is straightforward and is done. However, one problem is that the rate that the energy comes back is very high, and can be greater than the charging rate for the batteries, which again the charge rate of the batteries is the real obstacle here. One solution here is to have capacitors along with the batteries. The capacitors won't have the capacity of the batteries but can take a limited capacity back at a high rate. The capacitor energy can then be used for high power load situations, or for gradually recharging the batteries at the lower rate allowed.
The wheels. As they turn, they drive the pumps. The pumps are kept at the needed pressure by it's internal pressure regulator. You could also have accumulators so that even in stop-go traffic, you still get some charging.And once again where exactly is the energy coming from to drive the compressors or pumps that turn the generator?
Axles, if the wheels have them. If not, then off the spindles. When the wheels turn, so do they.Seriously? ? ???????????
Where is the energy turning the wheels coming from?
Think the transfer of energies through full circle once and show your math.
I am curious as to where you think this is going to improve things.
Are you kidding, or just messing with me?Let me clarify. Where is the power that is turning the wheels ultimately coming from?
In any event, I'm sure that electric cars are the future.I assume rc3po is talking about recapturing energy during breaking or in downhill stretches of road. Definitely, that is a targeted goal of these systems. Recapturing as much energy as possible is the way to go. There are limits on efficiency and charge rates, but it makes sense to to the best you can. But again, I'll stress that the electric motors and inverters needed to power the car are well suited to recapture the energy also. If only the batteries could be charged at the same rate that they can discharge, we would be in much better shape then.
There are new lithium ion capacitors that can be charged and discharged at very high rates, but the energy density of these devices are only starting to approach that of lead-acid batteries and can't compete with lithium battery energy density.
There is another issue with charging I can mention too. Even if you make a storage system that can be charged quickly (for example a huge bank of lithium ion capacitors), think about how much electric power is needed to quickly charge them. A 400 V system charged at 200 Amps would need 80 kW of power !!! Remember that next time you file up your gas tank. Think about the rate of energy transfer you are getting when you fill your gas tank in 2 minutes !!!
Yes, I'm pretty sure about that too. Perhaps some of the details remain to be seen, but it's hard to argue against this.In any event, I'm sure that electric cars are the future.
I assume rc3po is talking about recapturing energy during breaking or in downhill stretches of road.
,Yes, that's what I mean - systems to use to charge the batteries while the vehicle is moving. Even if they can't keep the batteries fully charged even while you are driving, they could at least increase the range of the vehicle between plug-in charging.
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