Ammonia internal combustion engine and control method

The invention provides an ammonia internal combustion engine and a control method, particularly relates to a method for realizing mixed combustion of the ammonia internal combustion engine by heating ammonia fuel by utilizing a heating device system and controlling the ammonia internal combustion engine, and aims to realize normal combustion of the ammonia internal combustion engine with a high compression ratio and recover waste heat energy of tail gas at the same time. The system mainly comprises a gas inlet system, a hydrogen supply system, an ammonia gas supply system, an ammonia gas heating system and a control system. The method has the advantages that under different working conditions, different heating modes are selected to heat the ammonia fuel, so that the ammonia fuel enters a cylinder at a higher temperature, and the problems that an ammonia internal combustion engine is difficult to ignite, ignition delay is increased, and the combustion speed is low are solved. Normal combustion of the ammonia