My car has a valve where you might lose some wheels but not all with a line failure. It’s better than nothing. The parking/emergency brake is a manual cable. Don’t know how that is implemented in this new system either.
Most vehicles have some form of dual braking system as a fail safe. Random internet image…
But this is the same as just having a split electrical circuit to a brake-by-wire solution. It’s only a pseudo-redundant system because you still rely on a single type of mechanical connection to brakes.
Kind of but if the electricity goes out it doesn’t matter how many circuits you have. They all don’t work. You could say the same about the brake fluid but I can’t flip a switch in the cab to drain the brake fluid but I can leave a light on to drain the battery. That’s why I’m curious what the fail safes are. They could have multiple power sources. We don’t know…
I was simply responding to your comment that there weren’t any fail safes to losing a brake line and there are. Losing a single line or two lines in the same circuit doesn’t cause a catastrophic failure and you can stop the vehicle albeit with reduced braking performance.
My car has a valve where you might lose some wheels but not all with a line failure. It’s better than nothing. The parking/emergency brake is a manual cable. Don’t know how that is implemented in this new system either.
Most vehicles have some form of dual braking system as a fail safe. Random internet image…
But this is the same as just having a split electrical circuit to a brake-by-wire solution. It’s only a pseudo-redundant system because you still rely on a single type of mechanical connection to brakes.
Kind of but if the electricity goes out it doesn’t matter how many circuits you have. They all don’t work. You could say the same about the brake fluid but I can’t flip a switch in the cab to drain the brake fluid but I can leave a light on to drain the battery. That’s why I’m curious what the fail safes are. They could have multiple power sources. We don’t know…
I was simply responding to your comment that there weren’t any fail safes to losing a brake line and there are. Losing a single line or two lines in the same circuit doesn’t cause a catastrophic failure and you can stop the vehicle albeit with reduced braking performance.
Easiest way to design it would probably be by making it a NC circuit so they brake unless they have power to open the brake cylinders.