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Electric brakes? [speculation on brake by wire]
- Thread starter Scrannel
- Start date
I'm eager to see what others might add here. I have not heard of any such news.
Teslas and other electric cars "brake" / slow down by regeneration. That uses the motors in reverse to generate electricity that is put back in the battery. In ideal situations, it brakes pretty well, to a point where friction brakes are not used much if you drive accordingly. Some might call this electric braking? There are still friction brakes on the car.
The parking brake is electric, in that it engages the rear friction brakes using electric motors.
Teslas and other electric cars "brake" / slow down by regeneration. That uses the motors in reverse to generate electricity that is put back in the battery. In ideal situations, it brakes pretty well, to a point where friction brakes are not used much if you drive accordingly. Some might call this electric braking? There are still friction brakes on the car.
The parking brake is electric, in that it engages the rear friction brakes using electric motors.
Ah, brake by wire. Would have been nice to put the link in your original post if you already knew about it 
If it's the future as they say, then all cars will eventually get them, not just Teslas. I presume it might make abs programming easier, as well as better regen/friction blending. We already have throttle by wire (even in ICE). Sometimes it's the regulations that prevent these things. Just have a look at side mirrors or steer by wire. Tesla has wanted to do those but was blocked by legislation.
If it's the future as they say, then all cars will eventually get them, not just Teslas. I presume it might make abs programming easier, as well as better regen/friction blending. We already have throttle by wire (even in ICE). Sometimes it's the regulations that prevent these things. Just have a look at side mirrors or steer by wire. Tesla has wanted to do those but was blocked by legislation.
Current Tesla production uses their own version of this to provide a blended braking
When you lift off the accelerator their motors note this reverse thrust and convert to generators to put this energy back into their batteries. If additional retardation is desired the physical brakes can be engaged and they physically will slow or stop the car.
This happens seamlessly when coming to a full stop. Regen is automatically augmented by physical brakes to finish the job of slowing to a full stop
When you lift off the accelerator their motors note this reverse thrust and convert to generators to put this energy back into their batteries. If additional retardation is desired the physical brakes can be engaged and they physically will slow or stop the car.
This happens seamlessly when coming to a full stop. Regen is automatically augmented by physical brakes to finish the job of slowing to a full stop
I don't see how this is related to Tesla. Yes Teslas use Brembo brakes but it doesn't mean Brembo developed this only for Tesla.
Teslas don't have a blended braking system. When you step on the brake petal in a Tesla, the physical brakes are used. At no point of you stepping on the brake petal are regen motors engaged first then the physical brakes.
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Yeah, we Volt owners were so proud of their blended braking system; and scoffed at Tesla's primitive braking. When I owned a Volt, blended seemed like a good idea, except for that transition point, from regen to brake pad brakes, where the car seemed to accelerate for a brief moment. A little disconcerting. Obviously it doesn't accelerate, it just slows less, but I can see how newbies would get all worried that their brakes weren't working.
MasterC17
Active Member
That article is garbage. The rear caliper has an integrated electronic parking brake (EPB). This is literally only used when placing the vehicle into park or taking it out of park (an electronic motor spins the piston in or out). When you are driving the car and pressing the brake pedal the caliper uses hydraulic fluid to actuate the piston.
Dolemite
is my name
Absolute ****ing garbage - literally worse than clickbait. Seems more so optimized for Search Engine Optimization than anything else.
If it's truly brake-by-wire how can it have any brake pedal feel? Does it have an electronically controlled means of quickly changing pedal resistance?
Whenever you lift off the accelerator, regen is engaged if there is room for extra energy in the battery. If you let your car regen to a full stop, the last few feet will be arrested by physical braking. Even when you are applying physical brakes, the regen is still working in the background to assist in stopping the car.
Gauss Guzzler
Safety Score = 42
Cruise control also blends friction brakes with regen as needed so yes, Tesla absolutely blends brakes with regen at any speed.
It just doesn't go the other way - the brake pedal doesn't increase the regen strength since it's always at max regen anyway.
It just doesn't go the other way - the brake pedal doesn't increase the regen strength since it's always at max regen anyway.
