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

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

#101

Post by FredPret »

rickydroll wrote: post #94
adgjlsfhk1 wrote: post #74

Earlier quoted context omitted.

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

If you've ever worked on a vehicle with drum brakes, you would see the foolishness in your statement. Brake dust goes everywhere, whether it be drums or disc brakes. Older drum brakes were even more hazardous because the brake linings were built with asbestos, at least until the 1990s for US-made brake products. Aftermarket and foreign-made brake pads apparently still have asbestos in them. I'm not too worried about…

> It's an engineering problem and now that is been raised, we can find solutions.

This should be the default attitude of society

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

#102

Post by dzhiurgis »

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?

I'm sometimes convinced Tesla's cameras identifies the stop line and stops itself exactly there. All I do is release the throttle pedal and it coasts there where it needs to be.

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

#103

Post by jameshart »

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.

The control scheme has nothing to do with the efficiency of the car. Whether one pedal or two, it’s going to use the same power for the same acceleration/cruise/deceleration profile.

Unless you’re concerned about the energy usage in your ankle when maintaining pressure on the gas with your foot?

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

#104

Post by jameshart »

Kirby64 wrote: post #75
k8sToGo wrote: post #63

Earlier quoted context omitted.

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.

You don’t have to use one pedal driving to use regenerative braking in most EVs. They use regenerative braking to effect control inputs on the brake pedal too.

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

#105

Post by dzhiurgis »

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.

IIRC 10% more effective to be precise. The UX is worth the cost.

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

#106

Post by gleenn »

daft_pink wrote: post #87

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.

I didn't really see them picking on EVs terribly in the article but maybe I missed it? Agree that a lot of EVs have regenerative braking so they should in theory produce less charged particles from the brake and caliper interaction, which they mentioned.

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

#107

Post by maigret »

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.

They make it better. One data point is that VW had to install drum brakes at the rear as they get barely any use. https://topgear-autoguide.com/category/tech-future/vw-electr...

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

#108

Post by thebruce87m »

wyldfire wrote: post #50
_aavaa_ wrote: post #46

Another day another set of researchers justifying their research which then gets spun as anti-EV FUD.

Why would that happen? EVs use their brakes much less often. when I read the article it occurred to me that this could eventually used to justify policy that would subsidize EVs more than they are.

The article has this statement:

> The new study reveals a problem that may grow as electric cars become more and more common over the next several decades. Electric cars, Smith explained, are not truly zero-emission vehicles, so municipalities need to think about strategies to reduce emissions from brake use as well as tailpipes.

Which completely ignores regenerative braking.

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

#109

Post by byw »

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 wonder for drivers who drove with regen-only for too long, do they lose the reflex to hit the brake?

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

#110

Post by akira2501 »

FredPret wrote: post #101
rickydroll wrote: post #94

Earlier quoted context omitted.

If you've ever worked on a vehicle with drum brakes, you would see the foolishness in your statement. Brake dust goes everywhere, whether it be drums or disc brakes. Older drum brakes were even more hazardous because the brake linings were built with asbestos, at least until the 1990s for US-made brake products. Aftermarket and foreign-made brake pads apparently still have asbestos in them. I'm not too worried about…

> It's an engineering problem and now that is been raised, we can find solutions. This should be the default attitude of society

It should at least be the default attitude on this site.
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