C8 gets mode-variable electronic braking
Thread Starter
Team Owner
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C8 gets mode-variable electronic braking
Harlan confirms its e-boost and not brake by wire - https://www.corvetteforum.com/forums...n-charles.html
EDIT - This is an old post before we received more info. The C8 is not the Brembo "brake by wire" system linked in posts below. It's fully hydraulic but with electric boost. The car mags keep spouting "brake by wire" as if there is no hydraulic connection. That is false.
See better thread here - https://www.corvetteforum.com/forums...they-work.html
--------------------
Wow... hope I like this on track. After 20 years tracking these cars I hope they don't hide too much feedback.
https://www.autoblog.com/2019/07/23/...stable-brakes/
EDIT - This is an old post before we received more info. The C8 is not the Brembo "brake by wire" system linked in posts below. It's fully hydraulic but with electric boost. The car mags keep spouting "brake by wire" as if there is no hydraulic connection. That is false.
See better thread here - https://www.corvetteforum.com/forums...they-work.html
--------------------
Wow... hope I like this on track. After 20 years tracking these cars I hope they don't hide too much feedback.
https://www.autoblog.com/2019/07/23/...stable-brakes/
Last edited by RapidC84B; Oct 17, 2019 at 08:27 PM.
Safety Car
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From: St. Louis Metro East IL
What happens if the electrical system fails? No service brakes, no parking brake. At least with the current system you still have brakes, just requires a lot more effort to stop after a couple applications.
Not too sure about this "feature." I don't care if a car goes, but it damn sure has to stop.
Ron
Not too sure about this "feature." I don't care if a car goes, but it damn sure has to stop.
Ron
Thread Starter
Team Owner
Joined: Feb 2013
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What happens if the electrical system fails? No service brakes, no parking brake. At least with the current system you still have brakes, just requires a lot more effort to stop after a couple applications.
Not too sure about this "feature." I don't care if a car goes, but it damn sure has to stop.
Ron
Not too sure about this "feature." I don't care if a car goes, but it damn sure has to stop.
Ron
Le Mans Master
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From: One Hour From Boston!
What happens if the electrical system fails? No service brakes, no parking brake. At least with the current system you still have brakes, just requires a lot more effort to stop after a couple applications.
Not too sure about this "feature." I don't care if a car goes, but it damn sure has to stop.
Ron
Not too sure about this "feature." I don't care if a car goes, but it damn sure has to stop.
Ron
Safety Car
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From: St. Louis Metro East IL
If throttle by wire fails the engine doesn't respond or throttle control fails in some way. Worst case, you push the ignition button and kill the engine. You still have brakes.
I believe the throttle pedal has 2 potentiometers that are compared in the software.
But I see lack of brakes as a much more significant safety issue than lack of throttle (yeah I remember Toyota stuck throttle issues).
Ron
I believe the throttle pedal has 2 potentiometers that are compared in the software.
But I see lack of brakes as a much more significant safety issue than lack of throttle (yeah I remember Toyota stuck throttle issues).
Ron
Melting Slicks
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Sounds like this just controls the "boost" or "assist"... there is still a hydraulic connection between the mc and the calipers. So... if the vacuum booster on your current system fails, you can still stop, provided you can do 450lbs squat on a leg press. Its the same, just different.
Your power steering works the same way... its electric... the "feel" is entirely simulated.... so the "brake feel" will be entirely simulated... and frankly, if you have ABS (which pretty much every car has today), your brake "feel" is already simulated...
Your power steering works the same way... its electric... the "feel" is entirely simulated.... so the "brake feel" will be entirely simulated... and frankly, if you have ABS (which pretty much every car has today), your brake "feel" is already simulated...
Safety Car
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From: St. Louis Metro East IL
If you read the article it does not seem that there is a hydraulic link between the brake pedal and the rest of the system:
"The driver presses down on the brake pedal, sending a signal to a computer. This “force” is then transferred to all the brakes using traditional brake fluid. Chevy is able to eliminate the conventional vacuum-based power brake system, which it says “provides an advantage in efficiency.”
There is no mention of an emergency braking system that will operate in case of electrical or component failure. Hopefully it is there and is just not mentioned in the article. I can't imagine a car meeting any kind of safety standard without something.
We'll just have to wait for the full story on this.
Ron
"The driver presses down on the brake pedal, sending a signal to a computer. This “force” is then transferred to all the brakes using traditional brake fluid. Chevy is able to eliminate the conventional vacuum-based power brake system, which it says “provides an advantage in efficiency.”
There is no mention of an emergency braking system that will operate in case of electrical or component failure. Hopefully it is there and is just not mentioned in the article. I can't imagine a car meeting any kind of safety standard without something.
We'll just have to wait for the full story on this.
Ron
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Burning Brakes
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Burning Brakes
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What happens if the electrical system fails? No service brakes, no parking brake. At least with the current system you still have brakes, just requires a lot more effort to stop after a couple applications.
Not too sure about this "feature." I don't care if a car goes, but it damn sure has to stop.
Ron
Not too sure about this "feature." I don't care if a car goes, but it damn sure has to stop.
Ron
Actually, according to Brembo’s July news release on the whole C8 braking system, “for the first time in Corvette history, the eighth generation will come with a Brembo Electronic Parking Brake (EPB). The Brembo EPB reduces part complexity, with the elimination of a brake pedal, brake lever and associated cables. Activation of the parking brake is as simple as pushing a button. The new design for the GM EPB delivers a 3 kg (6.6 lbs.) per car weight savings over the previous drum-in-hat style system.”
Last edited by 50MileSmile; Oct 17, 2019 at 12:47 AM.
Racer
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"In the event of a total loss of electricity, the conventional hydraulic safety system will take over for the Brake-By-Wire system enabling the braking system to operate on the front wheels, thus meeting the relevant legislation for secondary braking."
source
source
Thread Starter
Team Owner
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"In the event of a total loss of electricity, the conventional hydraulic safety system will take over for the Brake-By-Wire system enabling the braking system to operate on the front wheels, thus meeting the relevant legislation for secondary braking."
source
source
I made this thread when we didn't have much info... the car mags keep repeating "brake by wire", but it's not.
Last edited by RapidC84B; Oct 17, 2019 at 10:14 AM.
Le Mans Master
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