[VoltoBolt]

As a 2019 guy, what is SuperCruise: that highway hands free thing?

 

[TimSFL]

As a 2019 guy, what is SuperCruise: that highway hands free thing?

Yes
Like the Tesla. It’s not 100%

 

[TimSFL]

For whatever reason, they changed the programming in 2022 to limit regen while using CC to no higher than 11kW

???? when I hit the regen paddle to slow down a lot the regen goes way over 11kw. Cause CC is overridden and must be reset after speeding up again.
I will keep a eye out for this 11kw thing. But it’s news to me

 

[atc98092]

???? when I hit the regen paddle to slow down a lot the regen goes way over 11kw. Cause CC is overridden and must be reset after speeding up again.
I will keep a eye out for this 11kw thing. But it’s news to me

I agree. But we're talking about the CC controlling speed, not using the paddle. Using the paddle I've seen 70kW or better at freeway speeds, but CC isn't doing the speed control.

 

[BobBolt]

Still trying to figure how people know when it starts using friction braking when in L mode while using cruise control.

Don't know about CC but when using ACC yes it does. Rusty/salty rotors make a sound the first couple of times the pads contact them each trip out.
Hills are pretty rare around here but next time I encounter one I'll try on regular CC just to confirm.

 

[TimSFL]

I agree. But we're talking about the CC controlling speed, not using the paddle. Using the paddle I've seen 70kW or better at freeway speeds, but CC isn't doing the speed control.

Oh
This only applies to hills. We have very few in Florida

 

[ARCowboy]

I suspect that the adaptive cruise control computer is using the hydraulic brake system, and not trying to integrate regen as well.

Turned adaptive off and it made no difference. Capped at 8-9kW.

I'll try D instead of L for both modes

 

[amigajoe]

Sure, it can be seen like this if you don't control the "braking" using the acceleration pedal.

If you are driving at a constant speed, why do you even care about the one-pedal driving ?

The scenario is that a person uses one-pedal for the four miles till they get on the highway, and then they are on the highway for 25 miles: is there reason to turn one-pedal off.

 

[amigajoe]

Agreed on all.

My EUV doesn't seem to regen more than 8-9kW before engaging the friction brakes in cruise control though. Anyone else experience that ? I'm talking about a steep hill where I can regen 20-25kW by disengaging cruise control and adjusting the pedal pressure in one pedal mode, or I can get 8-9kW before the car engages the friction brakes to slow me down.

Are you determining that it has switched from regen to friction braking based on the amount of regen at a constant rate of deceleration?

 

[amigajoe]

Without training a driver to be exact and on some special route that can be calculate I'd think it doesn't matter if one uses cruise control. The problem I have with one pedal is how agressive it is. Sure I like it to stop but any devation when trying to maintain a speed or adjust can take effeciency.

YES !
Coming most recently from a 2015 Leaf that didn’t have one-pedal, and a Model 3 before that, where you could choose between three levels of regen, I sure wish you could choose from three levels ! (another feature that I would gladly pay for as part of a software update)

 

[NortonCommando]

....When the CC is controlling speed, it's not using the full regen capabilities of the car, and instead applying the brakes.
There's no reason for it, other than GM engineers made a mistake when programming the CC for the EUV.

Ding, ding, ding!
Probably the moral of this story!

HayL, I had a rental minivan in Colorado and it would downshift the automatic transmission to avoid heating the brakes when using CC and descending a mountain.

So, EUV guys, would you smell HOT BRAKES on your car if you let CC take you down a mountain?
The wind would have to be just right when you come to a stop,, or you could hop out and point an IR Temp Reader at your poor discs....

 

[Voldar]

The scenario is that a person uses one-pedal for the four miles till they get on the highway, and then they are on the highway for 25 miles: is there reason to turn one-pedal off.

The answer is no. If you are driving at steady speed on the highway, the one-pedal-driving doesn't influence anything. The car doesn't "advance" faster on the road in normal vs one-pedal-driving.
If you have a fluctuation in the speed during the highway run, if the highway is crowded, I would change to normal mode only because while in one-pedal-driving, the brake lights would engage more due to the bigger regen and the "steeper" slowing down of the vehicle. Not because it's less effective than normal mode.

 

[amigajoe]

I've done my share of commuting. Though the longer commutes have been mostly using transit (2 hours on the commute bus each way is a nice nap in the morning and time for memos and reading in the afternoon) because peak traffic was ridiculous and driving (when I had to do it) not much faster, if any. Sure, off-peak, driving is much faster than any mass transit, but in good cases it can be competitive at peak times. Now retired and glad that my occasional consulting gigs can be done mostly online from home.

My worst "commutes" were both on I-80. Work trip to the Bay Area with a fleet-issue Honda Insight (gen-1, stick) took 2 hours going, 3 hours returning, 90 miles each way with maximum speed 50 mph, usually under 20. Got almost 70 mpg. If I have to do that trip now, I take light rail to Amtrak and ride the train. And when my Mom was in assisted living, it was 50 miles through Sacramento; returning in the afternoon usually took at least 2 hours, and in the stick-shift Mazda produced about 28 mpg while the Prius would get over 50.

Bravo to you for using mass transit when possible. I wish I had the option for my 20 years commuting, but the only transit option (multiple buses) would have taken 2 1/2 hours compared to an hour and 10 minutes driving in traffic.

That said, if you’re saying you wouldn’t have wanted the option of Supercruise during that awful commute , then you and I just look at things differently.

 

[NortonCommando]

[what is Super Cruise?]

Yes
Like the Tesla. It’s not 100%

Not like a Tesla because it's the only True Hands Free driver assist.
It has a IR camera that watches your eyes, so you can't play with your phone, like you can with a Tesla.

 

[garyd9]

I get >11 kw power from CC slowing down my 2023 EUV. See the below image. (Sorry it's blurry...) Perhaps the 11kw limit is only for cars with adaptive CC? (Mine is a LT trim - no adaptive option.)

 

[atc98092]

@garyd9 odds are the GM engineers fixed their mistake on the '22 and that's why it's working for you. Perhaps there's a software update available for mine, but I haven't heard of one.

 

[PA Bolt EV]

I was also puzzled by the mentioned regen limit of 11 kW when using Cruise Control (CC)... so I had to run a quick test. I have a 2022 EV 1LT, so no ACC or SC. Temperature was 37 degrees F.

I drove up one of our local mountain roads, with a rather famous 3-mile long hill. Coming down I set the CC for 40 mph, and the regen settled in between 17 - 19 kW. When I disengaged CC and "coasted" briefly, then re-engaged CC the regen jumped up to 23 - 24 kW before settling back to 17 - 19 kW. I am sure if I wanted to get higher regen numbers I could have managed this. BTW, going UP the hill at 40 mph I was using between 40 - 45 kW.

 

[BobBolt]

@garyd9 odds are the GM engineers fixed their mistake on the '22 and that's why it's working for you. Perhaps there's a software update available for mine, but I haven't heard of one.

Is it perhaps a difference between cars equipped with CC versus ACC?
I know you and I have the option of switching between the two but perhaps something is configured differently on those without ACC?
I'd like to test this further myself but it isn't easy to find many hills that would work in the flat lands of the Great Lakes.

 

[garyd9]

Is it perhaps a difference between cars equipped with CC versus ACC?
I know you and I have the option of switching between the two but perhaps something is configured differently on those without ACC?
I'd like to test this further myself but it isn't easy to find many hills that would work in the flat lands of the Great Lakes.

I think that is exactly what it is. The cruise control module differs between cars equipped with adaptive and those without. That module will be different regardless of if an ACC equipped car has the "adaptive" turned on or off.

 

[NeilBlanchard]

Got my EUV yesterday. I've had a 2015 Leaf for four years, and I always drove in its high-regen mode (called 'B'; it's not one-pedal), so I'm very much already accustomed to using regen as a mechanism to avoid braking.

But there's something I've always wondered, and that curiosity is magnified by the increased level of slow-down in the EUV as compared to the 2015 Leaf's 'B' mode.

Driving in one pedal in my EUV feels like I'm always dragging a boat anchor. While I totally see the advantage of it in city driving, does it actually have a detrimental effect in highway driving if going a good distance at an essentially constant speed ? (I can see the advantage in stop-and-go SoCal freeway traffic)

Yes, the best efficiency is having no regen when you lift your right foot. But this is not possible in the Bolt EV, unfortunately.

Regen can only regain a fraction of the energy - probably less than 50% at best - so when you want to carry speed, then feathering the accelerator only putting barely enough power to keep going, is the best. Think of how you would ride a bicycle - and do that.