max_p0wer t1_j1ish12 wrote
Reply to comment by Cheben in ELI5: Why are electric car engines/motors able to accelerate so much faster (0-60 mph) than internal combustion engines? by jacobhottberry
Any “constant torque” would be due to the fact that at low speeds you’re traction limited so only a fraction of the cars power can be used.
Once you’re no longer traction limited, the torque will steadily decrease and power output will be flat.
This is a Tesla S P85D on a dyno. Notice the torque peaks (at 864 ft-lb!!!!) then steadily decreases. The power is nearly perfectly level just above 400hp for the entire second half of the run.
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