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Vehicle brakes produce charged particles that may harm public health: study

news.uci.edu

241–250 of 320 posts

Re: Vehicle brakes produce charged particles that may harm public health: study

#241

Just want to point out that most electric and hybrid vehicles use regenerative braking most of the time and only use real brakes at very slow speeds or in emergencies. So it might be totally misleading to say that electric vehicles are the problem, when they are probably the solution.

Absolutely right. I had to change brake pads on my electric car at about 120 k miles. My previous gasoline cars usually had their brake pads last about the advertised 30K miles. Some people are complaining that the rear brake rotors of their teslas are rusting and looking bad. That is how little they are used.

Furthermore, it is entirely possible and probably desirable that some electric cars actually remove the brakes altogether (with the exception of an emergency brake that is only used in case of total system failure). Theoretically, electric motors should completely capable of doing all necessary braking. Of course there would have to be more emphasis on the reliability of the power electronics but it is doable.

Re: Vehicle brakes produce charged particles that may harm public health: study

#242
post #183

Earlier quoted context omitted.

It's a shame this is used as an excuse to keep the heavy ICE SUVs and trucks. There are many EVs lighter than an average pickup truck. If people really cared about this, they'd demand train-based public transport instead (no tires! fully electric! self-driving too!), or at very least limits on car weight regardless of the engine.

Most drivers are virtue signalers. Until we have eco batteries or hydrogen buses and trains are the only real eco solution.

What is wrong with overhead electric for trains? Why some oil company shill nonsense about hydrogen?

Re: Vehicle brakes produce charged particles that may harm public health: study

#243

The problem of "brake dust" on human health and air quality has been known for a long time ( https://phys.org/news/2020-01-air-pollution-effects-immune-c... ) before that there were also issues with asbestos in brakes, but thankfully those haven't been used since the 90s as far as I know. This is the first I'm hearing about electrically charged particles though. The bottom line is that proximity to traffic is horribl…

Electric cars can help with some of the problems but don't solve all of them. In the case of brake dust specifically, presumably electric cars are worse because they're quite a bit heavier than ICE cars.

I’d go weeks at a time without touching the brake in a Leaf.

I might never replace the pads.

Re: Vehicle brakes produce charged particles that may harm public health: study

#244
post #183

Earlier quoted context omitted.

It's a shame this is used as an excuse to keep the heavy ICE SUVs and trucks. There are many EVs lighter than an average pickup truck. If people really cared about this, they'd demand train-based public transport instead (no tires! fully electric! self-driving too!), or at very least limits on car weight regardless of the engine.

Most drivers are virtue signalers. Until we have eco batteries or hydrogen buses and trains are the only real eco solution.

> Most drivers are virtue signalers

An amazing claim.

Re: Vehicle brakes produce charged particles that may harm public health: study

#245
post #166

Earlier quoted context omitted.

And EVs make some problems worse, such as tire dust because they're heavier than an equivalent ICE car.

Yep. Pretty much any kind of wear and tear part that is on an EV wears worse compared to a similarly powerful ICE. It's probably a wash or better because they don't use petroleum products for propulsion, but it is definitely a thing that needs to be considered. EV's are not some kind of panacea.

> Yep. Pretty much any kind of wear and tear part that is on an EV wears worse compared to a similarly powerful ICE.

Probably accurate if you exclude the brakes and ignore the fact that removing an ICE engine from consideration also removes nearly all the tricky bits that wear out on an ICE car.

Re: Vehicle brakes produce charged particles that may harm public health: study

#246

The problem of "brake dust" on human health and air quality has been known for a long time ( https://phys.org/news/2020-01-air-pollution-effects-immune-c... ) before that there were also issues with asbestos in brakes, but thankfully those haven't been used since the 90s as far as I know. This is the first I'm hearing about electrically charged particles though. The bottom line is that proximity to traffic is horribl…

EV use of Magnetic Braking reduce brake wear by alot . With One pedal driving in city not using brakes at all

Re: Vehicle brakes produce charged particles that may harm public health: study

#247

Earlier quoted context omitted.

It has to do with that your feet or legs are not super accurate machines that can keep the pedal at 0 regen and 0 acceleration for long enough time.

There is a decent sized gap between 0 acceleration and 0 regen equal to the amount of energy required for the vehicle to maintain speed against rolling resistance and air resistance. Anywhere inside that gap, you're not using regenerative braking at all, you're just decelerating from not supplying enough power to maintain speed.

That is not the type of cruising this is referring to. It is the wrong name, to be fair. It really is just letting the car roll.

Re: Vehicle brakes produce charged particles that may harm public health: study

#248

The problem of "brake dust" on human health and air quality has been known for a long time ( https://phys.org/news/2020-01-air-pollution-effects-immune-c... ) before that there were also issues with asbestos in brakes, but thankfully those haven't been used since the 90s as far as I know. This is the first I'm hearing about electrically charged particles though. The bottom line is that proximity to traffic is horribl…

> The people with the least amount of money end up having to move to apartments near highways

In Dubai prime real estate is along the major highway Sheik Zayed Road. It’s funny how these things can be cultural.

Re: Vehicle brakes produce charged particles that may harm public health: study

#249

Earlier quoted context omitted.

From airplanes, you get the lead from their fuel

Only very small piston airplanes, and the need fuel is being phased out. Areas immediately surrounding heavily used ga airports are occasionally seeing elevated levels but it's not a particularly potent source for the public. The issue is mostly employees at the airport being exposed while fueling and performing maintenance.

why are they still using it?
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