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Electric car - very powerfull!

Posted on 2014-02-11
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Last Modified: 2014-02-11
I'm fascinating how it works.  I own an electrical vehicle.  I take it fully loaded (5 passengers with junk in trunk) uphill in SF.  Very steep hill.  I don't notice any performance changes.  And I don't hear any increase noise from the engine.

Maybe it's a bad comparison, but when I put the 200 lbs patient on the hospital bed and elevating the bed, the motor is working smooth.  When I put 400 lbs patient the motor working slower and sounds like its choking.
With electric car I don't see that difference.   Is it because a motor is 100s times more stronger, or it works differently through the differential and transmission?
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Question by:Tiras25
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John Hurst earned 500 total points
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An electric drive motor can produce more low end torque than a gasoline engine. I would think that the motor for a car is a very powerful motor to provide normal operation and so that is possibly why you do not perceive a difference in sound for a full load (but not overload).

Diesel locomotives drive alternators which in turn drive the electric motors on the wheels. Those are direct driver (motor to wheel). And such diesel locomotives are very powerful.

So I think it is simply a powerful electric motor in the car matched to the capacity limit of the car.

It is not exactly analogous but I got a software upgrade for my car and it provided about 60 pound feet of additional torque. This means the car travels more effortlessly up hill and can accelerate faster from a standing start. Torque is a key to this.
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by:Tiras25
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Thanks, John.  It good to see your photo and read your resume.  Great job!
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by:John Hurst
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@Tiras25 - Thank you very much indeed and I was happy to help.
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