A few days ago, Ford's patent for a hydrogen-fueled internal combustion engine applied to the US Patent and Trademark Office was exposed. This patent is a turbocharged internal combustion engine driven by hydrogen, which has a very high air-fuel ratio and can be used in hybrid power systems.

According to this patent, the engine can operate at various air/fuel ratios. Just like the current standard internal combustion engine, exhaust gas recirculation (EGR) and valve timing will be used to control the combustion process. According to the existing data, the air-fuel ratio of the engine can reach very high, reaching 68 parts of air and hydrogen 1 part.

The patent also includes injecting hydrogen directly into the cylinder. Theoretically, providing hydrogen by direct injection can generate 15% more power than the same gasoline engine. In Ford's patent, the hydrogen-fired engine is also regarded as a part of the hybrid power system, and a generator is installed between the engine and the transmission. However, it is worth noting that this patent only covers the method of burning and controlling hydrogen mixture, not the whole engine.