Quote:
Originally Posted by genxer
I skimmed a puff piece article about a kid getting a college grant for testing a reluctance motor idea or ideas. Then I saw this search link: https://www.electricmotorengineering...tric-vehicles/
I don't think that style motor would ever be choice for performance, it would fit the appliance mold as a cost reducer.
The torque vs rpm, w/efficiency graph was the interesting part for me, as a general way to see electric motors.
Since Raptor made a post about the Tesla 3's strong passing power form 30-60... They would need more gears to pull hard above that. The best motor effieciency would expect to show at highway speed, if it's not 'oversized' for power, but in the low gear. |
Yeah, the main reason the efficiency drops so much for EVs on the highway is drag, roll resistance and lack of regen. You will find most EVs spend a lot of time in the wind tunnel and come equipped with low roll resistance tires. Michelin actually has a performance EV tire now. (
https://www.michelinman.com/auto/tir...pilot-sport-ev)
When it comes to power at highway speeds the Model 3 pulls ok, but not nearly as hard as it does from 0-70mph. Lack of gearing would be one solution but Tesla found a way while still using a single speed transmission. One this tech trickles down to lower priced models you will never see transmissions since they add weight, cost and complexity.
I love performance ICE based vehicles just as much as the next enthusiast but you have to give credit to Tesla for engineering such a machine. The issue now is the 0-60mph game it over. These vehicles are now too fast. They launch with ease and go fast without any drama whatsoever. The challenge facing many automakers of enthusiast vehicles is figuring out how to inject some personality and drama into a performance EV. We have seen what Dodge has announced so far... Not an easy task.
https://insideevs.com/news/513388/te...id-drive-unit/