There are several anomalous combustion phenomena that cannot be explained by current theories. One of them is the stoichiometric mixture of hydrogen and oxygen, known as Brown's gas. Dr. Randell Mills developed “hydrino” theory starting in 1986 that can explain excess heat in the absence of nuclear products in the research of cold fusion. It was applied to explain this anomalous combustion, by replacing potassium ion with atomic oxygen. It was found out that hydrino theory can explain this anomalous combustion phenomenon including abnormal heat generation from combustion of emulsified fuels. It was suggested that this technology can be utilized for the improvement of future internal combustion engines.