Single-cylinder 4-stroke diesel engine educational cutaway trainer designed for automotive education. The model is equipped with a direct injection system, 210 cc displacement engine producing 4 hp, and air cooling. The camshaft is located in the crankcase and operates an overhead valve system. The unit includes a trochoidal oil pump, injector, injection pump, rpm regulator, and a silencer. The model is manually operated and fully sectioned to show internal components and working principles.