Asklemmy

43916 readers

1132 users here now

A loosely moderated place to ask open-ended questions

Search asklemmy 🔍

If your post meets the following criteria, it's welcome here!

Open-ended question
Not offensive: at this point, we do not have the bandwidth to moderate overtly political discussions. Assume best intent and be excellent to each other.
Not regarding using or support for Lemmy: context, see the list of support communities and tools for finding communities below
Not ad nauseam inducing: please make sure it is a question that would be new to most members
An actual topic of discussion

Looking for support?

Looking for a community?

Lemmyverse: community search
sub.rehab: maps old subreddits to fediverse options, marks official as such
!lemmy411@lemmy.ca: a community for finding communities

~Icon~ ~by~ ~@Double_A@discuss.tchncs.de~

founded 5 years ago

MODERATORS

357

What are some commonly known facts that are too bizarre for you to believe to be true? (lemm.ee)

submitted 1 year ago by zirzedolta@lemm.ee to c/asklemmy@lemmy.ml

338 comments fedilink hide all child comments

For me it is the fact that our blood contains iron. I earlier used to believe the word stood for some 'organic element' since I couldn't accept we had metal flowing through our supposed carbon-based bodies, till I realized that is where the taste and smell of blood comes from.

you are viewing a single comment's thread
view the rest of the comments

[–] alokir@lemmy.world 22 points 1 year ago* (last edited 1 year ago) (19 children)

Using engine brakes can cause your car to not use fuel in some cases.

I've read and heard this from different sources (even driving instructors) and I don't get how it's possible. Your engine is still running, doesn't it use at least as much as it does while it's idling?

Edit: thank you all for your answers. I knew how the engine brake effect worked, my confusion was about exactly why the engine didn't consume fuel in the process. I now understand so thanks all.

[–] GeneralCricket@lemmy.fmhy.net 9 points 1 year ago

For the car to be "running" in those cases, the engine just needs to be turning to keep the alternator and potentially the power steering pump going. When engine braking, the rotation of the tires is locked to the rotation of the engine, so the inertia of the car keeps the engine turning without needing to use fuel.

Depends on the ignition system and everything of course, but it can be true.

load more comments (18 replies)