phil53 wrote:In any case, there should perhaps be specifications for what we want to obtain.
Yes electric has advantages!
Batteries are still a major obstacle in terms of cost and weight.
Well not that much. The density of mass energy continues to increase, the prices to fall, the technologies available to multiply and to top it all, the price of petroleum fuel makes these technologies faster to amortize ...
If we accept a small autonomy, for example 50 or 60Km. This is enough for me a day.
Well, compressed air has weight, price advantages and a simple turbine in the 2 front wheels is enough.
Huge torque at start-up and no gearbox
There, I do not share this opinion.
For a large torque, a piston engine would be required, which rotates at rather slow speeds. For fast speed, we would need vane motors ...
Finally when it relaxes, the air cools down and it is necessary to lubricate the moving parts ... This technology is far from being efficient ...
In terms of motorization by a pressurized fluid, the hydraulics are incomparably more efficient (hydrostatic transmissions of public works vehicles) but hardly applicable to the automobile ...