this post was submitted on 03 Apr 2024
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chapotraphouse

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[–] aaaaaaadjsf@hexbear.net 48 points 1 year ago* (last edited 1 year ago) (4 children)

Wait so the braking force applied by the regen decreases if the vehicle gets hot?

Isn't that extremely dangerous? Imagine while driving normally, you know that the car will slow down at a certain rate if you lift the throttle. Now that rate of deacceleration while off throttle changes depending on the temperature of the vehicle. That kind of inconsistency leads to accidents, as shown here.

[–] Posadas@hexbear.net 34 points 1 year ago

You've heard of rng.

Now it's time for randomized breaking distance.

[–] ProfessorAdonisCnut@hexbear.net 16 points 1 year ago

Just throw the battery into the ocean to keep it cool

[–] fuckwit_mcbumcrumble@lemmy.dbzer0.com 13 points 1 year ago (7 children)

Wait so the braking force applied by the regen decreases if the vehicle gets hot?

Do you want it to over charge an already hot battery and start a fire too?

[–] CascadeOfLight@hexbear.net 24 points 1 year ago (1 children)

susie-laugh God, Teslas are truly the gift that keeps on giving, the pinnacle of car technology. Yes please, I would like my car to catch fire when I brake.

[–] radiofreeval@hexbear.net 12 points 1 year ago (1 children)
[–] aaaaaaadjsf@hexbear.net 11 points 1 year ago

Lmao, Tesla made his rear left brake for the Australian GP. New sponsorship!

[–] djphdk@hexbear.net 19 points 1 year ago

Consistent braking or no battery fire; can't have both.

Truly a pinnacle of engineering.

[–] Flyberius@hexbear.net 19 points 1 year ago* (last edited 1 year ago)

I think we just expect things to work properly. Maybe a mechanical element that helps normalise these fluctuations.

But yeah, the car bursting into flames and killing the occupant would be fucking hilarious.

[–] Beaver@hexbear.net 17 points 1 year ago

The ~~bus~~ cybertruck can't slow down under 50mph or else it will explode

[–] aaaaaaadjsf@hexbear.net 13 points 1 year ago* (last edited 1 year ago) (1 children)

The car's computer should phase in the mechanical disc brakes as the regen braking force decreases to maintain a consistent deacceleration rate while off throttle or braking.

[–] fuckwit_mcbumcrumble@lemmy.dbzer0.com 10 points 1 year ago (2 children)

Tesla explicitly doesn’t mix brakes and regen because the transition between the two is always awful. Instead they use confusers to measure how much regen is needed at any given moment and adjusts the resistance based on that.

Between hot/full battery, computers being stupid, and their owners even dumber that’s probably how this dumbass hit a pole.

[–] alexandra_kollontai@hexbear.net 16 points 1 year ago

I've driven a non-Tesla electric car and the regenerative and mechanical braking both worked great and didn't have a startling transition between them. It just worked like I thought the brake pedal should.

[–] aaaaaaadjsf@hexbear.net 9 points 1 year ago* (last edited 1 year ago)

computers being stupid, and their owners even dumber

After watching some "testing out the self driving features of my Tesla" videos on YouTube, yeah I'd agree with that being the cause of most Tesla related accidents like this. Tesla owners and their cars seem like a terrible combination safety wise.

[–] keepcarrot@hexbear.net 9 points 1 year ago (1 children)

Even in my fake stormworks designs, I have a separate battery/capacitor specifically for regenerative braking that gently bleeds back into the system. Also the regen brakes have their own separate clutch, but that's because I couldn't figure out how to do it otherwise

[–] peeonyou@hexbear.net 4 points 1 year ago

i can't do a goddamned thing in that game, but i could probably still design a better machine than this piece of crap teslamobile

[–] booty@hexbear.net 8 points 1 year ago

Yes, that actually is exactly what I want. Because I'd never be dumb enough to get in a tesla lmao

[–] InternetLefty@hexbear.net 12 points 1 year ago

Interestingly enough, hydraulic brakes will also stop working the same way when the temperature of the fluid reaches the boiling point, which reduces the braking pressure significantly. Not a problem in most consumer vehicles in most situations, though. I'm assuming that the regenerative braking is either on or off, and might change quickly. It would be ideal if the mechanical brakes phased in as the regenerative braking phased out - I wonder if that's what they intended to do here, but didn't get it working?