I'm still grinding gears with Andy Foster at Motor Trend magazine, and lovin' it. The Technologue column is at the front of the magazine, and highlights mechanical topics within the automotive world. My Father was a civil engineer who impressed upon me an armchair appreciation of machines. Doing illustrations of the workings in engines is an interesting challenge. My images are definitely not the noble diagrams of engine manuals, but a playful riff on the subjects.
This one is about planetary gears. They're usual in transmission applications.
We're talking about variable combustion ratios, VCR, not old tapes. This is pretty amazing technology that increases an engine's capabilities while greatly impacting it's fuel consumption on the fly.