The AKD 112 Z is an air-cooled, two-cylinder, four stroke diesel engine with overhead valves.

The crankcase is a single cast piece, the drop-forged crankshaft with screwed on counter weights is supported in bearings made of steel-lead-bronze.

Due to the air-cooling of the engine, the cylinders have cooling fins made of centrifugal cast metal.

The cylinder head is a single piece made of a chill cast, highly heat resistant light metal alloy.

The control trap makes it possible to change the injection time at the engine start-up to pump more fuel into the cylinder.