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Adoption of EVs tied to real-world reductions in air pollution: study

keck.usc.edu

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Re: Adoption of EVs tied to real-world reductions in air pollution: study

#181

Post by socialcommenter »

margalabargala wrote: post #157
fafac wrote: post #147

Earlier quoted context omitted.

The tires and their dust don't care whether you're braking by regen or friction. The reason there's more dust is from the increased weight of the EV not because of regen braking. You can coast in EV as well, that is not exclusive to ICE.

> The tires and their dust don't care whether you're braking by regen or friction. I'm aware. The point I'm making is that EVs apply more braking than ICE vehicles do, due to the specifics of the implementation of regen braking that all manufacturers have chosen. > You can coast in EV as well Not without literally putting it in neutral. If you just take your foot off the accelerator, any modern EV will apply some amo…

I tend to agree with your overall point, but if we're talking about a 1-2 kW of "standby" regen, surely the rolling resistance of any kind of vehicle is in the same ballpark anyway (source: it takes multiple people to push a broken down car).

Re: Adoption of EVs tied to real-world reductions in air pollution: study

#184

Post by andreime »

cyberax wrote: post #160
thelastgallon wrote: post #127

Earlier quoted context omitted.

The best solution is to build walking or biking environments. This was discussed before: https://news.ycombinator.com/item?id=43672779 (saving a click) We need to start taxing vehicles based on the damage they are responsible for. The 4th Power Law is a principle in road engineering that states that the damage a vehicle causes to a road surface is proportional to the fourth power of its axle load. This means that eve…

[flagged]

That's a ... take.

Re: Adoption of EVs tied to real-world reductions in air pollution: study

#185

Post by eldaisfish »

cyberax wrote: post #154
eldaisfish wrote: post #82

Earlier quoted context omitted.

you are mistaken. Not a single EV or hybrid car uses power directly from the traction battery for the 12 V system.

It depends on your definition. Tesla Model 3 has a dedicated low-current connection to the high-voltage battery that bypasses the main contactors, specifically to power the 12V system.

Even those models still include a 12 V battery. The point stands - the traction battery is not a replacement and larger energy source in any car.

Re: Adoption of EVs tied to real-world reductions in air pollution: study

#186

Post by nostrebored »

jbm wrote: post #121
dgacmu wrote: post #110

Earlier quoted context omitted.

It gets studied. EVs are often heavier, which is worse for tire wear, but use regenerative braking, which is better for brake dust. Overall, EVs are likely a net win on the combination of these two things, and a big win on exhaust emissions, but it would be nice if we could shift to lighter and smaller vehicles and increase the mix of non-cars such as e-bikes and mass transit. Source: https://www.eiturbanmobility.eu/…

This will be met with consternation, not appreciation. The people who comment about brake dust in EV topics are the people who complain about birds when talking about windmills. We know it is disingenuous because no one cares about this when discussing overweight trucks and SUVs. Good news about a reduction in pollution from EVs? Can't have that. It's like the "At what price" meme around headlines about China. Going…

Hi, I’m indeed the same person. I also hate oversized trucks. I’m generally against things that make the world worse for marginal benefits.

The cybertruck clocks in at around the same weight as oversized trucks. Whenever I see people alone in either, I’m pretty annoyed.

Semis for long haul are also annoying and we should substantially increase rail infra in the US

Re: Adoption of EVs tied to real-world reductions in air pollution: study

#187

Post by kfarr »

cyberax wrote: post #160
thelastgallon wrote: post #127

Earlier quoted context omitted.

The best solution is to build walking or biking environments. This was discussed before: https://news.ycombinator.com/item?id=43672779 (saving a click) We need to start taxing vehicles based on the damage they are responsible for. The 4th Power Law is a principle in road engineering that states that the damage a vehicle causes to a road surface is proportional to the fourth power of its axle load. This means that eve…

[flagged]

> "Walking and biking environments result in ghettoes"

I must admit this viewpoint is one I have never seen before! Instead I've heard many arguments that bike lanes and pedestrianization are forms of gentrification, but resulting "ghettoes?" +1 for creativity!

Re: Adoption of EVs tied to real-world reductions in air pollution: study

#188

Post by mr_toad »

Braxton1980 wrote: post #161
MBCook wrote: post #28

Earlier quoted context omitted.

The number of ICE cars I get stuck behind from time to time that just REEK is amazing. I’m in a decently well off area too. Some putting off soot clouds, white smoke, nothing visible but clearly not doing complete combustion. Sometimes I wonder if half the cylinders are even working. I’ve heard one car like that is the equivalent of a surprisingly large number of modern ICE cars is in good shape. I love EVs. I’ve had…

Many car enthusiasts remove the catalytic converter for a combination of additional power and/or better sound. It has a massive impact on emissions and what you might be smelling is hydrogen sulfide which is normally converted to sulfur dioxide which is orderless. I should note the power increase may not have a major impact on newer cars where the cat has been optimized to reduce it's negative power impact. Infact a…

For every car enthusiast there are probably a hundred poorly maintained vehicles on the road. Black smoke is likely soot, and white smoke is almost certainly an oil leak.

Re: Adoption of EVs tied to real-world reductions in air pollution: study

#189

Post by stephenr »

tombert wrote: post #38
ares623 wrote: post #4

Earlier quoted context omitted.

I just hope "dumb" EV's become a thing soon. I cannot and will not own a smart car any more I want to own a smart TV or smart fridge or smart toaster.

I don't love smart TVs either, but why not just buy a smart TV and not use the smart features? I have a few "smart TVs", but I haven't even connected them to Wi-Fi, and I instead opt for an Nvidia Shield TV or just a laptop computer plugged in instead.

A few years ago it came out that one of the manufacturers (my hunch is Samsung but I don't remember the specifics) had their "smart" tvs aggressively try connecting to any and all networks it can find in range, if you didn't connect it to one.

I reluctantly bought an LG with webOS (least bad option available) a couple of years ago. For some reason they weren't content to let the TV menu/remote work with up/down/left/right buttons.

That's too fucking predictable, and anyone who's used a tv in the last 2 decades could use it....

Let's give it a fucking nipple, just like those horrific fucking IBM/Lenovo laptops.

Then of course it also tries to "help" by detecting HDR content and change view mode... while something is playing.... which makes the screen go black for several seconds.

Re: Adoption of EVs tied to real-world reductions in air pollution: study

#190

Post by nevi-me »

usui wrote: post #175
stevenjgarner wrote: post #126

Earlier quoted context omitted.

Yes current EVs are heavy. It's not at all clear that this will prevail as solid state batteries evolve to become standard. It is highly possible that EVs will soon be lighter than comparable ICE vehicles [1] [1] https://news.ycombinator.com/item?id=46505975

No no no. Sure, there might be a future where solid state batteries become the standard for electric vehicles, but you cannot link to Donut Lab's announcement from this month. There is no credible evidence they've achieved the holy grail of batteries so far until they actually deliver these motorcycles in hand and people independently verify them.

Time will tell on their battery, especially if the bike they're putting it on delivers. I think the overall point could be that there's active R&D in trying to find geopolitically sustainable materials, and lowering the weight of materials used.
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