Dongfeng Cummins Z 14 engine adopts high-strength molybdenum-containing cast iron cylinder head, which greatly improves the reliability of the engine. Innovative designs such as overhead camshaft design, integration of cylinder block and gear room, and integration of water pump and oil pump greatly reduce parts wear and improve reliability; Using patented engine in-cylinder braking technology, the braking power is increased by 25%, the vehicle maintenance cost is greatly reduced, and it is safer and more reliable.