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80% of your gas money goes out the tailpipe (slrpnk.net)

submitted 2 days ago* (last edited 2 days ago) by [email protected] to c/[email protected]

30 comments fedilink hide all child comments

Key context: thermodynamics dictates that heat engines waste a lot of energy.

Credit: Karin Kirk

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[–] [email protected] 20 points 2 days ago (2 children)

I think the 80% number is outdated (although most of the energy is still wasted)

F1 engines achieve a peak thermal efficiency above 50 percent, significantly higher than a modern passenger car's 35 percent thermal efficiency - https://www.motor1.com/news/655596/video-how-f1-engines-make-1000hp/

So more like 65% goes out the tailpipe...

[–] [email protected] 27 points 2 days ago (3 children)

I'll have you know 65% does not go out of my tail pipe.

It goes out a hole in the exhaust manifold that I'm too poor to patch up.

[–] [email protected] 4 points 1 day ago

I have Keiko patch up mine

[–] [email protected] 7 points 1 day ago (1 children)

If you take it off I'll weld it for you.

[–] kautau 9 points 1 day ago

Is this the modern day version of getting beads at mardi gras

[–] clickyello 2 points 1 day ago

oof. fuckin felt

[–] [email protected] 3 points 1 day ago

If your rolling coal, you are literally pumping unused diesel fuel out the car. You're efficiency is absolute dog shit.