Around 1940, engineer Büchi presented supercharge methods with exhaust driven turbines.

-These designs were mainly based on high speed compressors.

-For this study he designed two-stroke engines that seem interesting for their shape and architecture. We include them below.

"A Büchi design"

-This has been a base for later turbochargers used in our days.

-Another one that mechanically is more complex:

"Another Büchi design"

-The former design is with a Diesel system and the latter with a gasoline system. In both engines the double cylinders are connected by the combustion chambers.