MWM AKD 112 Z
The MWM AKD 112 Z is an air-cooled two-cylinder inline diesel engine produced by MWM from 1955 – 1960. One, three and four cylinder variants of the same engine family were also produced by MWM. Description The AKD 112 Z is an air-cooled, two-cylinder, four stroke diesel engine with overhead valves. The letter Z means Zweizylinder, German for two cylinders. 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. The crank and shaft pins of the crankshaft are heat-hardened. Due to the air-cooling of the engine, the cylinders have cooling fins made of centrifugal cast metal. The combustion chamber of the engine is a part of the piston bowls, as the engine is direct-injected. The pistons are made of a special highly heat resistant light metal alloy, they have three piston rings and one oil control ring. The bigger conrod eyes are made of steel-lead-bronze, the upper smaller conrod eyes are made of special-bronze. The camshaft is supported by rolling bearings. The overhead valves are actuated by rockers and pushrods. The cylinder head is a single piece made of a chill cast, highly heat resistant light metal