The Danfoss Motor states that the water "internal combustion" engine is mixed with electric power. The working principle of the water "internal combustion" engine is: using a plunger pump to fill the cylinder filled with high temperature oil, the timing gauge is injected with an appropriate amount of water, causing an explosion and pushing the cylinder. The piston moves upwards to achieve the purpose of doing work.
The working cycle of a water internal combustion engine is the same as that of an internal combustion engine and is a four-stroke cycle. The difference is that the water internal combustion engine replaces gasoline and diesel with water, and replaces the compressed air in the cylinder of the internal combustion engine with externally heated high temperature oil.