You sent me down a rabbit hole. As a Honda guy, yeah I said it, I fully understand V-TEC, but I really don't know much about the early stuff.
This is from Wikipedia and seems to give a good basic summary;
"CVCC, or Compound Vortex Controlled Combustion, is an internal combustion engine technology developed and trademarked by the Honda Motor Company.
The technology's name refers to its primary features: Compound refers to the use of two combustion chambers; Vortex refers to the vortex generated in the main combustion chamber, increasing combustion speed, and Controlled Combustion refers to combustion occurring in a timely, controlled manner.
The engine innovatively used a secondary, smaller auxiliary inlet valve to feed a richer air-fuel mixture to the combustion chamber around the spark plug, while the standard inlet valve fed a leaner air-fuel mixture to the remainder of the chamber, creating a more efficient and complete combustion."
And this guy shows a head.
Interesting stuff.
Also, this guy.
Ya gotta give Honda credit for their response to Generic Motors. That took...well, you know...
