Emission reduction structure applied to pre-combustion chamber type diesel micro-ignition ammonia-hydrogen engine

The invention relates to the technical field of internal combustion engine combustion and harmful emission inhibition, in particular to an emission reduction structure applied to a pre-combustion chamber type diesel micro-ignition ammonia-hydrogen engine, which comprises a diesel tank arranged on a pre-combustion chamber fuel supply pipeline connected with a pre-combustion chamber, diesel oil in the diesel oil tank enters the pre-combustion chamber through the pre-combustion chamber fuel supply pipeline, the diesel oil is subjected to compression ignition in a high-temperature and high-pressure environment to form jet flame and ignite air/ammonia/hydrogen mixed gas, tail gas generated by combustion enters the second exhaust pipeline through the first exhaust pipeline, and the second exhaust pipeline is provided with an electric heating plug and a catalytic device. The second reformed gas supply pipeline is connected with the second exhaust pipeline; the glow plug is used for igniting tail gas; by igniting a s