Interesting US Dept of Energy look at friction in car engines etc

[Logic]

I found this on the US Dept of Energy's website.
NB the URL to the link: https://www.energy.gov

I have posted the 1st couple of pages below.

Here's the link to the complete presentation;
https://www.energy.gov/sites/prod/fi..._17_fenske.pdf

Parasitic Energy Losses
















Here is another link showing a test engine used in these experiments etc;
https://www.energy.gov/sites/prod/fi...t08_fenske.pdf

[freebeard]

Whew.