Comments on: What Is The Amount Of Electrical Energy Need To Propel An Electric Car?

By: JOHNNIE B

JOHNNIE B — Fri, 03 Jul 2009 18:17:54 +0000

The real problem is that the electric car has a very short range. Well U could double the batteries . Well batteries are very heave and that will not double the range. There is another problem that as batteries age the power will be lowered.

By: racer123

racer123 — Fri, 03 Jul 2009 17:20:39 +0000

Weight/horsepower ratio’s are fine and dandy for a ‘fair-weather ‘car’.’ The forgotten aspect here,of a 3 season car is the addition of how to address wet and freezing and sub-0 external weather conditions. Most northern hemisphere cars are designed to create a comfort zone internally while at the same time produce real-time solutions to external weather situations. You must address the entire driving scenario-not just the minimal mechanical aspects.

By: yankee_s

yankee_s — Fri, 03 Jul 2009 13:42:12 +0000

a horsepower is 750 watts.
assuming the car makers don’t put larger than needed engines in regular cars, those engines are 150 or so hp.
so you need a 112 kW electric motor.
Power needed depends on, as you mentioned, weight, but also wind resistance and more importantly uphill/downhill and stopping and starting……