Brake Assist is only used when you hit the brakes fast and hard in an emergency but not hard enough to engage ABS. It does not turn on when you brake gradually harder.Quote:
Originally Posted by timmy_12
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Brake Assist is only used when you hit the brakes fast and hard in an emergency but not hard enough to engage ABS. It does not turn on when you brake gradually harder.Quote:
Originally Posted by timmy_12
sorry my badQuote:
Originally Posted by aaronng
but i must have been in the right area as he says abs engages when he hits the brakes in a panic situationand that is probably the reason
What is brake assist?
the following link will explain
http://www.brakeassist.com/
Brake assist has already been considered as a separate issue earlier on in this thread :)
Brake assist 'might' be the catalyst which made the ABS come on.
However, most of us who have already had the foot on the Brakes but without Brake Assist kicking in in the first place, either find that the ABS will suddenly come on when there's a shxthole on the ground, or if ABS is already on, its pulsations aren't calibrated so well - it makes the final braking distance too much longer than required...
Turning off the VSA wouldn't help either, because ABS and Electronic Brake Distribution are still on :(
It's not the fact that the ABS comes on that is the great issue. Personally, I think ABS is a good thing (it's helped me in a couple of situations in other cars) and should be standard on all cars.
For me, the concern in the situation that I experienced was the loss of braking pressure that seemed to come with this ABS application. My foot didn't move on the brake pedal, the amount of pressure I was applying didn't change -- but after hitting the bump and the ABS kicked in, the car started rolling MUCH faster than it had been. It was almost as if I had completely removed my foot from the brake pedal.
I've never had an ABS braking experience like it before.
Tobster, you seem to be misunderstanding the use of ABS. You said you didn't change the amount of pressure applied. ABS does not help you increase your braking pressure in your situation that you described. That's because brake assist did not activate. Let's say you had "X" braking force while slowing down. You go over a bump, the wheels lock and ABS activates. Now you have "X divided by Y" braking force where Y is the ratio of the amount of time where ABS tries to "unlock" your stopped wheel. If you want a similar stopping force to what you had before ABS engaged, you have to press the brake pedal HARDER.
Although pressing the pedal harder might give you slightly more braking pressure, provided your foot pressure wasn't already on the max threshold before (when possibly Brake Assist already kicked in) - if ABS is already engaged in this case - I don't believe it would really help much putting on more pressure because the ABS is already doing its very mis-calculated pulses for the next 1 sec or 2... :(
Even though ABS is suppose to increase braking distances in emergency braking in normal dry weather braking (perhaps even in the wet in the Euro Accord hmmmm unfortunately..) - its doing so as a sacrifice for the ability to manouver the car and steer clear of obstacles. But in most cases we don't need to manouver the car so for every metre that braking distance is increased, its putting us closer to grave danger.
When I drove non-ABS cars before, I think my own braking pressure adjustability was more suitable and safer at least I know what to expect!
Quote:
Originally Posted by Tobster
Yep thats what happens to me to :o
During/after ABS, you need to push harder to recover braking power, or sometimes even re-press the brakes if ABS activated alot... otherwise the car will keep on going and fly off a cliff
Just remember that ABS stands for antilock braking system and not some brake force booster system. ABS tries to unlock a locked wheel and does so by "releasing" the brake caliper for that microsecond and then re-engaging. ABS doesn't apply full force and then release if locking is detected. Full force can only be applied by your foot consciously or if brake assist is engaged.
Yeah but the brake sinking issue is whats most concerning. I wander if other ABS systems do the same thing.
Aaronng I think you're possibly misunderstanding what I mean. I know perfectly well how ABS works and what it feels like.
EuroDude knows what this situation feels like. I didn't quite know what he meant when he first described it and I was trying to think about what was going on -- but when I experienced it myself it was unlike any other braking experience I've ever had (and I'm about to turn 35 and have been driving for good while). Unless you've experienced it, you just have to take our word for it.
In this situation it was like the brakes were no longer being applied.
In other emergency braking situations (not that this was an emergency) in other cars where ABS has kicked in, I have not experienced a loss of braking pressure: you're braking, slowing, the ABS pulses to prevent wheels locking up, and you stop pretty damn quickly. The ABS activation does not change the rate at which you're stopping.
In this situation, I was braking, slowing, hit the bump, the ABS activated but the rate at which the car was slowing drastically changed, i.e., the car started accelerating again -- which shouldn't happen -- and that's what's alarming because you then have to reapply the brakes, recalculate your stopping distance and it DOES become an emergency stop.
I don't know if I'm explaining this very well...
Crystal clear Tobster.
We both have an MY06 model, so maybe the 03-05 ones behave differenty?
Either way, Honda should really look into this potential safety hazard.
Hmm... That's worrying if you are accelerating when ABS is activated. Seriously, I've been through the bump on the road situation, straight line and corner ABS activation and in all situations, the car continued to slow down while ABS was on. I made sure that my foot was pressed hard against the pedal in all cases. I'd say get your ABS checked by the dealer.