this post was submitted on 26 Jul 2024
144 points (97.4% liked)
Cars - For Car Enthusiasts
3935 readers
11 users here now
About Community
c/Cars is the largest automotive enthusiast community on Lemmy and the fediverse. We're your central hub for vehicle-related discussion, industry news, reviews, projects, DIY guides, advice, stories, and more.
Rules
- Stay respectful to the community, hold civil discussions, even when others hold opinions that may differ from yours.
- This is not an NSFW community, and any such content will not be tolerated.
- Policy, not politics! Policy discussions revolve around the concept; political discussions revolve around the individual, party, association, etc. We only allow POLICY discussions and political discussions should go to c/politics.
- Must be related to cars, anything that does not have connection to cars will be considered spam/irrelevant and is subject to removal.
founded 1 year ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
Gotcha. I figured AEB was pretty much getting to the point of being standard. Didn’t know it was decreed at this point.
I guess I was thinking more if third party targets were missed if it was possible to recalibrate or if new hardware was needed. In my experience, VW specifically, they used different radar units just about every year. And my Mazda is very different in comparison.
I welcome standard AEB. Maybe people will stop totaling my cars.
It's definitely possible to recal or replace the hardware, it's just way easier to recal that replace hardware.
One example I can think of is one project whose calibration and braking performance meant it was just eking out a pass, but because of the transition to copper-free brake pads, was now hitting the target. It wasn't a huge deal, and we had to recalibrate it to brake a bit earlier.
VW (and Mercedes) is a pretty special case in terms of their industry pull. When I worked at a German Tier 1, it was very much a case of if they say "jump" you asked, "how high?". They have such a massive output of vehicles, as a supplier, you'll do anything possible to try and maintain their business. Even being on the team for NA/LATAM customers, we'd be told to sideline what we were working on to support stuff for VW/Mercedes, even though we saw literally no benefit from it as the NA team, and it could seriously hurt some of the projects we were working on. However, the reality was that the business from VW alone was larger than basically every other project we had combined, so it was worth it to piss off our other customers to keep them happy.
I also welcome standard AEB, but I'm not convinced customers are going to like it to be entirely honest. With how the regulation is written, it's asking a lot from OEMs in terms of performance, and with perfect performance being required to even just sell a vehicle, I fear that we're going to wind up with ultra-sensitive systems with heaps of false-positive/"phantom braking" reactions, just to ensure they pass the regs. NHTSA in all their infinite wisdom did include some very basic FP testing, but not an acceptable rate of FP per X number of miles. Also, because of the extremely high nighttime requirements, expect headlights to get even more blinding in the coming years...
I never thought about a sudden change in brake compound affecting the AEB system and its calibrations. I’ve always tried to stay OEM or comparable aftermarket pads. For example, I swapped my pads on my GTI for some EBC’s mostly because of brake dust. They performed very well, but I also had sticky tires. I have noticed I was able to find parts much more easily with that car than I have my Mazda. And with how many parts revisions I’ve seen for that one car I’d believe that they demand a lot in parts manufacturing. I guess it comes with the territory when they do something like the global MQB platform where parts are so easily shared.
In 6 years and 150,000 miles I only had one incident of a false positive where the car braked for whatever the system saw as an obstacle. Fortunately, no one was behind me but it was a route I traveled every day and it happened early on (~40,000 miles). My newer Mazda has the whole camera setup etc and definitely triggers if with the adaptive cruise if someone in the lane next to me brakes or slows down so I can see the overly sensitive reactions making people angry.
For the headlights, I don’t think factory cars are much of an issue. Now that matrix style lights are making their way here we should be able to learn a lot from Europe.
Thanks for the insightful reply! It’s cool to see stuff like this.