Hacker News Board Hacker News, browsed like a classic message board
Live data from Hacker News

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

news.uci.edu

Post reply on HN
Print view View original

71–80 of 320 posts

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

#71

Post by beembeem »

> All you would need to do is to collect them with an electrostatic precipitator – a device that exposes the charged particles to an electric field and efficiently sweeps them away.”

How do they propose to do this? A little device mounted near each brake pad? A skim of the paper doesn't appear to show an opinion from them beyond citing this prior study [1]. The conclusion of the cited paper appears to show a progression towards a target:

> This study is our first step to install dust collectors in actual vehicles, in order to reduce the brake wear PM emissions. In this study, we evaluated the collection efficiencies of an inertial separator, an ESP, and a hybrid precipitator, independently. In the next stage, we will design a suction system that considers the structure and space of the brake system; then, the full dust collector system setup will be installed on a vehicle. At the final stage, the actual collection efficiency of the dust collector will be measured under various on-road driving conditions.

[1] https://www.mdpi.com/2073-4433/13/7/1121

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

#73

Post by ok_dad »

sambazi wrote: post #57
ok_dad wrote: post #16

Earlier quoted context omitted.

Tires are somewhere near the top for distributing microplastics and heavier cars cause more tire wear, so yea we should get on that. I live next to a main road and we run filters in our house and have to wash the surfaces at least once a week to get off the oil and rubber dust. You can't just dust that stuff either, you have to wash it with soap. I almost regret buying this place, but where else would I have bought i…

most ppl live next to a road so i gather yours is a pretty hefty one or you overlooked other sources of polution

Yea it’s the main road for the whole town and my house is ten feet from it.

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

#74

Post by adgjlsfhk1 »

rightbyte wrote: post #52
ThinkBeat wrote: post #49

This will come from all ground transportation sources, right? Busses, trains, trams, subways etc. Probably the heavier the vehicle the more particles are likely to be produced?

Heavy vehicles like busses and trucks more often have drum brakes which I guess are better from a air pollution view?

drum breaks have the breaks enclosed so the particles won't be in the air

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

#75

Post by Kirby64 »

k8sToGo wrote: post #63
jordanbeiber wrote: post #22

Earlier quoted context omitted.

But you rarely have to brake an EV though. I’ve had two EV’s over the last 6 years, and I have to remember to occasionally hit the brakes to keep them from rusting. One pedal driving is just money - saves power and is just much smoother over all than old school breaking. IMO.

Crusing is much more efficient than one pedal driving. So it does not save power at all.

If you’re lifting off the throttle enough to activate regen braking, you would be applying the friction brakes in a car as well. Maintaining a steady speed is more efficient than varying speed, but if you have to vary speed then one pedal driving is superior in every way.

If your one pedal driving doesn’t save power, then I would suggest a driver mod.

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

#76

Post by FirmwareBurner »

robertlagrant wrote: post #32
FirmwareBurner wrote: post #24

Earlier quoted context omitted.

We can't save the planet or ourselves because it's not profitable.

Selling brake pads that don't wear out would be immensely profitable. Things people want get bought.

I dunno mate. If I were a brake pad salesman I'd prefer they last less not more.

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

#77

Post by chucksta »

varelaz wrote: post #19

Clickbait. "The toxicity and health effects of brake wear particles are largely unknown". Is there any real harm found? What's the concentration of them close to the dangerous road? What's effect of them comparing to pm10 or pm2.5?

Familiar with asbestos? Its pretty widely regarded as a bad time

https://www.asbestos.com/exposure/automobiles/

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

#78

Post by thejazzman »

EForEndeavour wrote: post #37
jordanbeiber wrote: post #22

Earlier quoted context omitted.

But you rarely have to brake an EV though. I’ve had two EV’s over the last 6 years, and I have to remember to occasionally hit the brakes to keep them from rusting. One pedal driving is just money - saves power and is just much smoother over all than old school breaking. IMO.

I've never driven an EV. How do you approach stop signs and red lights other than braking? Is "engine braking" (regenerative braking?) strong enough to handle that big a fraction of slowing down in city traffic?

It's a timing skill you rapidly develop. Switching models throws off your timing, so don't be surprised when you initially use the brakes more.

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

#79

Post by thejazzman »

techdmn wrote: post #64
u320 wrote: post #3

Electric vehicles are heavier, which means they must spend more brake pads to stop. But they also use regenerative breaking, which reduces pad wear. So I'm not sure if they make it worse or not.

I drive a Tesla Model 3, a few thoughts: * I'm hard on brakes in general, but have over 70k miles on the original pads. Regen braking reduces brake use a LOT. * Regen does NOT bring the car to a complete stop, the brakes are blended in below something like 5 MPH. The rotors are not going to rust away, they see action every time you drive. (Some surface rust is fine and normal, EV or no.) * EVs can be heavier than ICE…

It DOES bring them to a stop in newer models. Not sure which year it started but it's been at least 2

But I know what you mean from my older models

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

#80

Post by fsckboy »

kwhitefoot wrote: post #55
fsckboy wrote: post #34

Earlier quoted context omitted.

back when we all rode horses, falling off of them was at the top of the accidental death risk for the average person.

> for the average person. For the average horse rider perhaps but not the average person. Most people were never on a horse.

if enough people on horses fall off and die, the average could still win over the population. I don't have the original statistic I saw in front of me, but that's how I interpreted it.

and in agricultural times in the US, I'd say most people were on horses.

Post reply on HN