| abstract |
The invention relates to an oxygen direct injection pure hydrogen combustion engine and a power system thereof. The magnesium hydride storage tank is connected to a hydrogen port of the hydrogen fuel engine through a low-pressure hydrogen buffer tank, and the pressure swing adsorption oxygen generator is connected to an oxygen nozzle of the hydrogen fuel engine through a high-pressure oxygen buffer tank. The exhaust port of the hydrogen fueled engine is connected to the three-way catalyst through a tail gas expander or turbo unit, and the three-way catalyst outlet is connected to the gas-liquid separator through a coanda/compound coanda unit. And a gas outlet of the gas-liquid separator is connected to a water-gas inlet of the magnesium hydride storage tank through the hydrogen purification unit, and a water outlet of the gas-liquid separator is connected to the cooling water tank. The hydrogen fuel engine is combined with the Koehrlok pump unit/the composite Koehok pump unit, so that the waste heat of the tail gas of the engine is fully utilized, and the heat efficiency of the engine is improved. |