Picture credits
The charts and drawings are our own. The photos and portraits are public domain or CC0 on Wikimedia Commons, cropped and resized with no other changes.
Photos and portraits
Carburetor two-barrel Carter BBD on 258 AMC engine.jpg
by Christopher Ziemnowicz (CZmarlin), Public domain
1928-01-10 1903 Wright Flyer horizontal 4-cylinder engine left front (cropped).jpg
by Attributed to Orville Wright, Public domain
Our own charts and drawings
Bar chart of the three groups of diesel engines: small ones under 188 kilowatts for cars and vans; medium ones from 188 to 750 kilowatts, mostly in heavy lorries; large ones over 750 kilowatts for ships and locomotives
Our own drawing
Bar chart: only about 12 to 30 percent of the energy in the fuel moves a conventional car; the rest, about 70 to 88 percent, is lost, mostly as heat in the engine
Our own drawing
Simplified drawing of one cylinder in four panels: intake with the inlet valve open and the piston going down, compression with both valves shut and a spark near the top, power with burning gas pushing the piston down, and exhaust with the exhaust valve open and the piston pushing gas out
Our own drawing
Simplified drawing of a small 10-tooth driving gear meshing with a 20-tooth driven gear; the driven gear turns at half the speed with twice the torque
Our own drawing
Simplified drawing of a weight of 33,000 pounds lifted one foot in one minute, labelled one horsepower equals 746 watts
Our own drawing
Simplified side-by-side drawing: a petrol engine takes in air and petrol, squeezes the mixture and a spark plug lights it; a diesel engine takes in only air, squeezes it 14 to 1 up to 22 to 1 to over 526 degrees Celsius, and sprayed-in fuel lights itself
Our own drawing
Simplified drawing of a Wankel engine: a triangular rotor inside an oval casing with intake, compression, power and exhaust zones; one turn of the rotor completes all four, and the output shaft turns three times as fast as the rotor
Our own drawing
The engine drawings are simplified teaching drawings, not to scale. The charts are drawn by our own code from the sourced figures on this site. Inside the Engine and the games are our own code. Useless the eraser is the network’s own mascot. Fonts: Bricolage Grotesque, Newsreader and Kalam (SIL Open Font Licence), served from this site.