Because according to the law of conservation of energy, energy will neither be generated nor disappear out of thin air, but can only be transferred from one object to another, and the forms of energy can also be converted to each other. Therefore, it is obviously against the law of conservation of energy to decompose water into hydrogen and oxygen without relying on external energy, and then change it back into water after burning, just like the "perpetual motion machine" that people can never realize. Just like photosynthesis in plants, it seems that water is directly decomposed into hydrogen and oxygen, but there is solar energy involved.
according to relevant sources, the water-hydrogen engine has a special conversion setting, which can convert water into hydrogen, and then input it into the hydrogen fuel reactor to generate electricity, and then drive the on-board motor to realize the running of the vehicle. Water-conversion device->; Hydrogen-hydrogen fuel reactor->; Electricity -> Motor -> According to reports, the key link is a special catalyst in the conversion device. Under the action of the catalyst, water can be converted into hydrogen, and finally "realize" the normal running of the youth water-hydrogen fuel vehicle without refueling, charging and only adding water.
obviously, the highlight of this hydrogen production system is not "water", but hydrogen production materials and hydrogen production devices. The so-called "water-hydrogen engine" is just a gimmick. The car equipped with this engine is not a real "water-hydrogen fuel car", but should be called "on-board hydrolysis instant hydrogen production hydrogen energy car".
you know, hydrogen energy is "zero emission" in the true sense, and the energy conversion efficiency is high. Therefore, it is also considered as one of the sustainable development directions of the future automobile industry. However, due to the relatively high requirements of hydrogen energy from preparation, storage to practical application, only a few countries have the pilot operation ability of hydrogen energy vehicles at present.