this post was submitted on 21 Sep 2023
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[–] [email protected] 19 points 11 months ago* (last edited 11 months ago) (2 children)

weren't those volvo diesels better in many ways? or have i got it backwards? yay for the fossil fuel industry in confusing me, so fuck you shell.
ahem, fuck you: BP.

does anyone even know the names of these shits in order to condemn them

[–] [email protected] 16 points 11 months ago (3 children)

Better in what ways? I think they are a bit more efficient, but emit more particulates.

[–] [email protected] 27 points 11 months ago (1 children)

I believe that they emit less CO2 compared to gasoline powered cars, but a lot more nitrates, which are carcinogenic.

[–] [email protected] 11 points 11 months ago

and acidic and eutrophic nutrients...

The efficency of diesel engines gets lowered when using proper particulare filters, catalysts and NOx resorption with uric acid. So at best the CO2 benefits are marginal.

[–] [email protected] 2 points 11 months ago (1 children)

In Europe, diesel is usually cheaper and burns slower, so it saves money.

[–] [email protected] 2 points 11 months ago (1 children)

"Burns slower"? Are you talking about the engine rpm or cetane value? Neither really has anything to do with cost per unit.

Generally diesels are more efficient and reliable to their gas counterparts and the better low end torque makes them better for hauling loads. Also better at engine breaking when combined with a manual transmission, so very suitable for mountainous European countries.

[–] [email protected] 2 points 11 months ago (1 children)

I'm no scientist. A full tank tends to go farther on a diesel model than a gasoline one 🤷

[–] [email protected] 3 points 11 months ago

There's more energy per unit in diesel compared to gas and compression ignition burns more efficiently then spark ignition.

[–] [email protected] 1 points 11 months ago

yeah, that was my question.