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

keck.usc.edu

221–230 of 661 posts

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

#222
post #145

Something that needs to be pointed out, especially for those who want to push back against findings like this and essentially defend ICE vehicles: Really step back and imagine a world where the modern EV [1] was first to market and a gasoline combustion engine was second . Who would actually decide to switch from a modern EV to gasoline on purpose of their own choice? The downsides of gasoline cars are actually prett…

I think the problem with this hypothetical is that technology was the main constraint back in 1900, not marketing.

Battery technology was significantly much worse. Lithium batteries were only discovered in the ‘70s.

Gas engines were far more polluting but way less complex in 1910.

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

#223
post #121
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…

Please don't downvote comments because you don't agree with the argument. Downvotes should be for comments that add little to the discussion.

I agree that discussing weight with regard to EVs, without acknowledging that (in the US) the fashion is for big heavy ICE cars is just as polluting is disingenuous.

That said, outside the US the trend is for smaller cars, and equally the weight of a small EV is not hugely dissimilar to a common ICE car.

Frankly I'm not sure there's a whole lot to say about tire dust- cars need tires. EVs generate less brake dust. If there's a tire dust discussion to be had, then that discussion is independent of the vehicle fuel source.

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

#224
post #165

Earlier quoted context omitted.

But ICE vehicles can be in engine breaking mode. You pretty much never "coast" (e.g. put the vehicle in neutral or hold the clutch in). I get what you're saying but it feels like it's way in the margin if an effect at all. Do you have some reference? People keep talking about tire wear but my model 3 tires (which are relatively high performance soft tires) aren't wearing any faster than the wear I used to get on my S…

The amount of engine braking applied by an automatic transmission ICE vehicle when you take your foot off the gas is an order of magnitude less than the regen braking applied when you take your foot off the accelerator on your Model 3. Here's a reference for you: https://www.theatlantic.com/technology/archive/2023/07/elect...

First off, my Renault Megane e-Tech has paddles that allow me to change the regen strength on the fly. I use it actively when driving.

But anyway, I find I drive differently with an EV. I don't let off the throttle unless I want to slow down. If I want to coast, I just reduce my throttle input to where its coasting.

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

#226
Personally, I hope EV adoption (in Indonesia) improves, as they mostly come from China and challenge the status quo of Japanese cars.

Chinese cars are a "better deal" because they give more bang for the buck. Japanese cars, on the other hand, are very "stingy" due to decades of near monopoly.

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

#227

Earlier quoted context omitted.

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…

> Infact a popular tuner company, APR, that provides flashes tested the recent Volkswagen GTI and R generation with their most common tune and determined that with their tune removing the cat had a nominal impact. Do you mean minimal impact?

Probably. I read it as “had an impact but kept the performance stayed nominal.”

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

#228
post #28

No surprises. No matter how we look at it, EVs are much friendlier and safer to the environment. Some people argue the source of electricty can be contested against because that involves fossil fuel burning again, but in today's world we are rapidly moving away from it and towards nuclear/hydel/wind methods for generating power. I hope ICE cars completely become a thing of the past in the next couple of decades to co…

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…

> get stuck behind from time to time that just REEK is amazing

It’s crazy. How do we even allow selling cars without HEPA filters.

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

#229

Earlier quoted context omitted.

Have you been in the new Model Y? I was all for the „dumb car” until I tried one of those. Never going back. You only want „dumb” bc the other car companies fk’d it all up.

Other car companies fucked it up is funny way to put it. Tesla hasn’t made a new car in a decade and the whole lineup is for my 80-year old Dad. I have 2014 Tesla S, my neighbour 2025, same car. Tesla X is from a decade ago, Tesla 3 is basically Toyota Corolla and Y is basically Model 3 that was pumped up a bit to look like a “crossover”

Wow. This comment makes me wonder if really earth is flat.
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