this post was submitted on 25 Jan 2024
350 points (95.3% liked)

News

23406 readers
3161 users here now

Welcome to the News community!

Rules:

1. Be civil


Attack the argument, not the person. No racism/sexism/bigotry. Good faith argumentation only. This includes accusing another user of being a bot or paid actor. Trolling is uncivil and is grounds for removal and/or a community ban. Do not respond to rule-breaking content; report it and move on.


2. All posts should contain a source (url) that is as reliable and unbiased as possible and must only contain one link.


Obvious right or left wing sources will be removed at the mods discretion. We have an actively updated blocklist, which you can see here: https://lemmy.world/post/2246130 if you feel like any website is missing, contact the mods. Supporting links can be added in comments or posted seperately but not to the post body.


3. No bots, spam or self-promotion.


Only approved bots, which follow the guidelines for bots set by the instance, are allowed.


4. Post titles should be the same as the article used as source.


Posts which titles don’t match the source won’t be removed, but the autoMod will notify you, and if your title misrepresents the original article, the post will be deleted. If the site changed their headline, the bot might still contact you, just ignore it, we won’t delete your post.


5. Only recent news is allowed.


Posts must be news from the most recent 30 days.


6. All posts must be news articles.


No opinion pieces, Listicles, editorials or celebrity gossip is allowed. All posts will be judged on a case-by-case basis.


7. No duplicate posts.


If a source you used was already posted by someone else, the autoMod will leave a message. Please remove your post if the autoMod is correct. If the post that matches your post is very old, we refer you to rule 5.


8. Misinformation is prohibited.


Misinformation / propaganda is strictly prohibited. Any comment or post containing or linking to misinformation will be removed. If you feel that your post has been removed in error, credible sources must be provided.


9. No link shorteners.


The auto mod will contact you if a link shortener is detected, please delete your post if they are right.


10. Don't copy entire article in your post body


For copyright reasons, you are not allowed to copy an entire article into your post body. This is an instance wide rule, that is strictly enforced in this community.

founded 1 year ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
[–] [email protected] 11 points 10 months ago (3 children)

Cars are designed for fuel efficiency (well, it should at least be considered.) To make an IC engine efficient, it has to be able to rev higher, and reach higher speeds. So while it can technically reach 100 mph, it's most efficient at 55.

If you make an engine with a top speed of 65mph, and run it at 65mph all the time, it's going to guzzle fuel like an alcoholic going through an angry divorce.

[–] [email protected] 6 points 10 months ago

Plus what if the car is loaded down with 5 people instead of just 1? Or something on the roof like a roof box? Now your 65mph top speed is 50. And what about hills?

[–] [email protected] 1 points 10 months ago (3 children)

that may have been the case during the carter administration, but the efficiency curve of a modern car tops out a fair bit higher than 55.

[–] [email protected] 7 points 10 months ago

Most cars still do drastically drop off in efficiency past 55mph, wind resistance is still the same as it was in 1975.

Modern cars are more efficient at 70mph than older ones, but they're still less efficient than they were at 55.

[–] [email protected] 2 points 10 months ago

Okay, but that's only because the top speed is much higher to bring the RPMs down into the efficiency sweet spot.

[–] [email protected] 1 points 10 months ago

Citation needed. Hybrids and EVs at least are actually most efficient at even slower speeds.

[–] [email protected] -2 points 10 months ago* (last edited 10 months ago) (1 children)

...and EVs are just as terrible for the environment as ICEs in respect to the fact that they're not public transit. They produce more microplastic/microrubber waste from tires because they're heavier than ICE vehicles. More tires on the road, more microplastics.

EVs don't reduce traffic and while there is an energy savings, it would be a lot bigger if we were dumping all those EV batteries into trains and buses, both of which reduce traffic. (and reduce tires on the road)

Beyond this, every EV is a luxury item. I'll start giving a shit about EVs when I can get one with roll-down windows, no AC, no sensors, no rear-view camera, no stereo other than an FM radio, because then you'll see some fucking energy savings over time. Every EV has a bunch of extra shit drawing power in them.

I'm pro-EV, but not for individual consumers. Cars have broken society. It's time to return to public transit.

Especially in places like Seattle, because the promise of "going wherever you want, whenever you want" by owning your own car is a fucking joke its impossible to get anywhere in a reasonable amount of time with so much traffic. Buses and trains reduce traffic.

If it's energy savings we're actually going for, EVs as they are aren't the answer.

[–] You999 6 points 10 months ago

If it's energy savings we're actually going for, EVs as they are aren't the answer.

If we take the real awnser of public transportation out of the picture then moving to EVs as a replacement for SOVs does in fact conserve our energy.

An internal combination engine are Only 35-40% efficient as a lot of heat is generated and lost. A gas turbine on the other hand can be as as high as 80% efficient .

It's more efficient for us to burn fuels to generate electricity to power EVs including transmission losses and charging losses than to burn them in ICE vehicles. Again though public transportation is the better solution overall.