This is a cool idea! A different type of 2-stroke engine, but called a
1-stroke, with eight pistons and only four cylinders... :-)

A little confusing, but a really innovative idea!

https://www.thedrive.com/news/company-builds-powerful-500cc-one-stroke-engine-immediately-installs-it-in-a-miata

#NewTechnology #Engines #Innengine #EightCylinder