I have an idea for an electric car that although is not new, I simply have not seen anyone go in this direction. Since I am only a hobbyist type of engineer, I and embarrassed to ask if perhaps I am barking up a wrong tree. Please bear with my ignorance as I ask a few simple questions and give you a brief description of my ideas.
I do not like the current crop of hybrid cars. although the technology is better than nothing at all it is only a minor benefit over none at all, and frankly almost all the hybrid cars would be better off as a efficient 4 cyl car, without any electrics.
I think they (the car manufs) have it all backwards. I envision an all electric driven wheel car, with a small 200-400 CC engine running on any type of fossil fuel (Diesel propane, natural gas, and or petroleum). this is a small unit designed to run at the most efficient speed (2500 RPM). It runs all the time it is needed to charge the batteries and also runs the Air conditioner, and any other "power" accessories that might be needed.
The batteries would be of efficient lithium ion type (probably 1-2 thousand of them). they could be arranged into any needed voltage levels. As well as the battery power and the electric engine (Could be dc or AC brushless) there would also be a shared shaft DC engine with completely different winding sharing the same shaft as the primary windings. what this secondary winding would do (Either AC or DC) would be to kick in when a large boost in power (initial acceleration and or passing at hwy speeds) is needed. I would like to ask if there is any large capacity capacitors that could be used to store energy and allow for a dump of 3-7 seconds of boost. Are capacitors available that are small. lightweight, and of sufficient size that they could be used in a gang style connection?
The little 200-400 CC engine could be run all the time or only when the caps are not full. The little engine would first fill the caps, then maintain the caps charge. After that the engine would charge the Li ion cells. It is also able to take a charge from the AC wall outlet, so that during the night your car would be fully charged. The little engine in the back could be used to charge when an AC wall outlet is not available and of course during the operation of the car to recharge the caps. What I really want is a minimum 20 HP equivalent from the main Li Ion batteries, and a 50 hp boost as the caps dump to the booster winding.
Does any of this make any sense? I do not know if I am describing it properly, and I beg your indulgence re my lack of formal engineering... But I am reasonably capable of machine shop use, and I have a couple of "well off" friends who might be interested in funding a prototype. Whet I do not know is if such capacitors exist in the size and weight I might need.
Any ideas, would be appreciated...
If you could.... A CC to my email address of email@example.com would be appreciated....
Thanks in Advance.