Speak EV - Electric Car Forums banner

1 - 4 of 4 Posts

·
Registered
Joined
·
86 Posts
Discussion Starter #1
Can anyone explain what the sensation is when I decelerate.

Driving in "L" take my foot off the accelerator and get to 2-3mph and then there appears to be what I can only describe as an auto box downshift?

So we have three clutches and three motors, what am I feeling? What is going on?
 

·
Registered
Joined
·
1,777 Posts
At that low speed it's probably the regeneration ceasing to operate efficiently (or shutting off), when the regen stops the deceleration will reduce and it will feel like you sped up a little, I have noticed it when braking lightly. Just before you stop (ie 1-3mph) you need to press the brake peddle a bit more.
 

·
Registered
Joined
·
8,106 Posts
Parax is correct. At very low speeds there isn't enough regen power generated to operate as an effect brake and so it switches to mechanical brakes for the last second or two when stopping.

Ideally if should be seamless but all the EVs I have driven it is slightly perceivable. It seems a little more noticable on the Ampera than on the Leaf.

It can catch you out the first couple of times so leave extra room between you and whatever is in front when stopping until you get used to it ;)
 

·
Registered
Joined
·
138 Posts
I noticed this effect as soon as I first drove the Ampera but now it's second nature.

I always marvel at how the brain copes with change.

I drove a regular (hire) car on holiday recently and thought how "strange" the brakes felt.

Big Paul
 
1 - 4 of 4 Posts
Top