Rivian 1/2 ton high temp, grade test. Good read/video
This is worth the read...and watch. Obviously promotional but still informing. Story. https://stories.rivian.com/hot-weather-towing Video https://youtu.be/b7P1uZIb6wA
Forum Discussion
Reisender wrote:
Also not a engineer. How would regeneration fit into this. A model 3 see’s regen rates north of 70 KW and that’s a two motor system. I can see regen rates north of 200 KW for 4 motor trucks. I have read some speculative numbers on the Tesla semi of 800 KW regen rates. This would also play into brake life. One pedal driving is an interesting experience. I go days at a time without ever touching the brake pedal. I can see this being the same in bigger applications.
Cheers.
While there are limits with the motors & charging systems, regenerative braking is not limited so much by motor size but how hard you want to brake and the weight of the car.
Mod 3's have way more than 70kw of electric motor but they likely cap it at 70kw as the maximum reasonable amount of deceleration and most of the time, it doesn't draw anything close to that.
If you applied 200kw in reverse at 60mph, anything lose in the car would go flying due to the extreme deceleration...or more likely the wheels would start spinning in reverse and the vehicle would lose control.
An 80,000lb semi needs far more power to slow down as it's around 25 times the weight of a passenger car, so they can extract greater power thru the regenerative braking without causing other issues.
