How A Car Engine Works (animated infographic) - because I know very little about cars :P This is very informative!
Chevrolet Internal Combustion Engine Patent Print From 1919 - Patent Art Print - Patent Poster - Wall Art - Engineer - Mechanic #patentartgifts
A collection of GIFs demonstrating a few alternative engine designs. (Xpost from /r/justrolledintotheshop) : educationalgifs
Rotary Engine - Wankel Engine =How Does It Work? Industrial Processes Shown In Awesome Animations - Interesting Engineering
This patent poster is printed on 90 lb. Choose between several paper styles and multiple sizes. These are awesome posters of