JohnQ
Active Member
In cars with regen on the brakes there is limit as well, if you go over that limit you're using the friction brakes for any stronger braking. If any of the safety systems come on, you're using only the friction brakes. This often leads to a poor brake feel. In addition, cars that have regen on the brakes always use some friction braking (to minimize the transition feel) so they're less efficient by design, and far more complex.
I get that there's a limit to regen in either scenario. My question is whether regen on the accelerator means a limit due to a person's behavior (panic lift off on the accelerator) rather than an engineering limit from the regen capabilities of the motor. In other words, if regen were applied through brake travel could the force be modulated with friction on the front brakes such that you could get safely get 90kW of regen from the rear motor. I'm just posing the question as I don't know the answer regarding why there's the 60kW limit. It could simply be driving dynamics and that's what the engineers felt was the optimum experience (rather than limits applied due to safety or electromechanical constraints).